CN101754344B - Uplink covering capacity control method of time division synchronization code division multiple access (TD-SCDMA) system and user equipment - Google Patents
Uplink covering capacity control method of time division synchronization code division multiple access (TD-SCDMA) system and user equipment Download PDFInfo
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- CN101754344B CN101754344B CN2008102404324A CN200810240432A CN101754344B CN 101754344 B CN101754344 B CN 101754344B CN 2008102404324 A CN2008102404324 A CN 2008102404324A CN 200810240432 A CN200810240432 A CN 200810240432A CN 101754344 B CN101754344 B CN 101754344B
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Abstract
The invention discloses an uplink covering capacity control method of time division synchronization code division multiple access (TD-SCDMA) system, which is used for effectively enhancing the uplink covering capacity of the TD-SCDMA system under a ultra-distance covering scene and realizing the balance of uplink covering capacity and downlink covering capacity. The method comprises the steps of: confirming that the transmission of uplink data meets the uplink covering capacity enhancing starting condition of an uplink physical channel by user equipment according to a transmission adjusting command sent by a base station; starting the uplink covering capacity enhancing the uplink physical channel by the user equipment, increasing at least one uplink time slot used for loading the uplink data; and transmitting the uplink data loaded in the uplink time slot on the uplink physical channel. The invention also provides the user equipment.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to the up covering power control technology of a kind of TD-SCDMA system.
Background technology
In outdoor mobile communication system, because the transmit power limited of subscriber equipment, so generally be up constrained system, TD-SCDMA (Time Division Synchronized Code DivisionMultiple Access, TD SDMA inserts) system is exactly up constrained system.Under super covering scene far away, for example subscriber equipment is arranged in application scenarioss and very far away apart from the base station such as grassland, desert, sea, because the power amplifier of base station can carry out high-power setting as required, than the increase that is easier to realize transmitting power, if and only increase the transmitting power of base station and do not improve the transmitting power of subscriber equipment, can't realize the balance of the two-way covering power of uplink and downlink, so, how under super covering scene far away, to strengthen the up covering power of TD-SCDMA system, become one of technical problem that needs to be resolved hurrily.
In the prior art, mainly strengthen up covering power by following several implementations:
Increase the physical size of antenna.By increasing the physical size of antenna, the power output that need not change base station and subscriber equipment power amplifier can strengthen antenna gain, improves the two-way covering power of uplink and downlink.Physical parameters such as the weight of antenna, volume can increase considerably along with the enhancing of antenna gain, by empirical model as can be known, proportional relation between antenna gain and the antenna area (length x width), antenna height increases and is twice or day line width increases one times, and antenna gain can improve 3dB.But the area that increases antenna will cause the weight of antenna, volume etc. to increase considerably, and strengthen the engineering difficulty; Simultaneously, along with the enhancing of antenna gain, the outer electromagnetic radiation characteristic of its half-power angle can change, and therefore, the physical size that increases antenna is also inadvisable.
Increase the reception antenna quantity of base station.Can realize receive diversity by the reception antenna quantity that increases the base station, improve the diversity gain of 3dB, but increase the engineering difficulty equally.
Increase the transmitting power or the number of transmission antennas of subscriber equipment.Can strengthen up covering power by transmitting power or the number of transmission antennas that increases subscriber equipment, still, must carry out bigger change, realize that difficulty is bigger existing standard and industry situation.
Promote the setting height(from bottom) of antenna for base station.The setting height(from bottom) that promotes antenna for base station can reduce intercept and slope, strengthens coverage distance.But, the setting height(from bottom) of lifting antenna for base station, the cost of paying is higher.
In the base station, increase active multiplying arrangement.In systems such as GSM, WCDMA, adopt increasing tower the mode of active multiplying arrangement such as puts and can strengthen up covering power, essence is to offset the radio frequency mouth of base station power amplifier and the feeder loss between the antenna by amplifying upward signal, makes that the noise of system and noise that tower is put are very approaching.But in the TD-SCDMA system, power amplifier is arranged on and the very near position of antenna, and the distance between power amplifier and the antenna can't reduce, and therefore, in the TD-SCDMA system, can't strengthen up covering power by this mode.
Improve base station equipment, reduce the noise factor of base station equipment.By improving base station equipment, reduce the noise factor of base station equipment, can improve the receiving sensitivity of upward signal, but effect and not obvious, from existing industrialization and device fabrication level, the realization difficulty that general noise factor with base station equipment reduces 1～2dB is bigger.
Reduce service rate.Can obtain the equivalent process gain by reducing service rate, reduce quality of service.Though adopt the mode that reduces quality of service can guarantee not call drop of business, can have a strong impact on user experience and impression, this method is obviously inadvisable.
The external external antenna of subscriber equipment.By external external antenna on subscriber equipment, can improve the upward signal ERP, but this mode is applied in generally in the test process, it obviously is worthless that civilian subscriber equipment adopts this mode.
As seen, in the prior art, the implementation ubiquity that strengthens up covering power problems such as difficulty is big, mode is inadvisable, can't realize, does not have a kind of feasible, effective solution, can be implemented in the up covering power that strengthens the TD-SCDMA system under the super covering scene far away.
Summary of the invention
The invention provides the uplink covering capacity control method of time division synchronization that a kind of TD SDMA inserts the TD-SCDMA system,, effectively strengthen the up covering power of TD-SCDMA system, realize the balance of the two-way covering power of uplink and downlink in order under super covering scene far away.
Accordingly, the invention provides a kind of subscriber equipment.
The uplink covering capacity control method of time division synchronization of TD-SCDMA provided by the invention system comprises:
The emission adjustment instruction that subscriber equipment sends according to the base station, the up covering power that uplink physical channel is satisfied in the transmission of affirmation upstream data strengthens entry condition;
Subscriber equipment starts the up covering power that strengthens uplink physical channel, increases the ascending time slot that at least one is used to carry described upstream data; And
On uplink physical channel, described upstream data is carried in the ascending time slot and sends.
Subscriber equipment provided by the invention comprises:
Confirmation unit, the emission adjustment that is used for sending according to the base station is instructed, and the up covering power that uplink physical channel is satisfied in the transmission of affirmation upstream data strengthens entry condition;
Start unit is used to start the up covering power that strengthens uplink physical channel, increases the ascending time slot that at least one is used to carry described upstream data;
Transmitting element is used on uplink physical channel described upstream data being carried on ascending time slot and sends.
The uplink covering capacity control method of time division synchronization of TD-SCDMA provided by the invention system, the up covering power that uplink physical channel is satisfied in the transmission of subscriber equipment affirmation upstream data strengthens entry condition, then start the up covering power that strengthens uplink physical channel, increase the ascending time slot that at least one is used to carry upstream data, subscriber equipment is carried on upstream data in the ascending time slot on uplink physical channel and sends.Can equivalence increase up processing gain by the ascending time slot quantity that increases the carrying upstream data, thereby under super covering scene far away, effectively strengthen the up covering power of TD-SCDMA system, realize the balance of the two-way covering power of uplink and downlink.
Description of drawings
Fig. 1 is the signal format schematic diagram of TD-SCDMA system physical channel in the prior art;
Fig. 2 is a TD-SCDMA subframe structure schematic diagram in the prior art;
Fig. 3 is a kind of implementation method flow chart that strengthens the up covering power of DPCH among the embodiment one;
Fig. 4 is the implementation method flow chart that strengthens the up covering power of UpPCH among the embodiment two;
Fig. 5 a is the burst structure schematic diagram of UpPTS in the prior art;
Fig. 5 b is the burst structure schematic diagram of the UpPTS after the expansion among the embodiment two;
Fig. 6 is the implementation method flow chart that strengthens the up covering power of PRACH among the embodiment three;
Fig. 7 is the implementation method flow chart of the up covering power of the another kind of DPCH of enhancing among the embodiment three;
Fig. 8 is the uplink covering capacity control method of time division synchronization flow chart of TD-SCDMA system in the embodiment of the invention;
Fig. 9 is the structured flowchart of subscriber equipment in the embodiment of the invention.
Embodiment
The embodiment of the invention provides the uplink covering capacity control method of time division synchronization of a kind of TD-SCDMA system, in order under super covering scene far away, effectively strengthens the up covering power of TD-SCDMA system, realizes the balance of the two-way covering power of uplink and downlink.
In the TD-SCDMA system, all physical channels all adopt four-layer structure: and System Frame Number, radio frames (Radio Frame), subframe (SubFrame), time slot (Time Slot, TS)/sign indicating number, time slot is used for distinguishing the different user signal on time-domain and sign indicating number territory.The signal format of physical channel as shown in Figure 1 in the TD-SCDMA system; the radio frames of each 10ms is made up of the subframe of two 5ms; the subframe of each 5ms is divided into conventional time slot TS0～TS6 and 3 special time slots of 7 0.675ms again; special time slot comprises DwPTS (the Downlink Pilot Time Slot of 75 μ s; descending pilot frequency time slot); GP (the GuardPeriod of 75 μ s; come downwards to up protection at interval) and UpPTS (the Uplink Pilot Time Slot of 125 μ s; uplink pilot time slot); period of sub-frame 5ms is a TTI (Transmit Time Interval, a Transmission Time Interval).The TD-SCDMA subframe structure as shown in Figure 2, in 7 conventional time slot TS0～TS6, TS0 is a time slot, be used for base station all subscriber equipmenies in the sub-district and send broadcast and public information etc., TS0 always distributes to down link, TS1～TS6 is a business time-slot, and wherein TS1 always distributes to up link, and TS2～TS6 can flexible allocation give up link or down link.Wherein, the time slot of distributing to down link can be called descending time slot, the time slot of distributing to up link can be called ascending time slot, by a transfer point (Switching Point) separately, all disposes a pair of transfer point in each subframe between ascending time slot and the descending time slot.
At first, the realization principle to the embodiment of the invention describes.
Have three uplink physical channels in the TD-SCDMA system, be respectively UpPCH (Uplink PilotChannel, ascending pilot channel), PRACH (Physical Random Access Channel, Physical Random Access Channel) and DPCH (Dedicated Physical Channel, DPCH), be introduced respectively below:
DPCH is a Traffic Channel, under the certain situation of transmitting power, by increasing the C/I (Carrier interference ratio) that processing gain can equivalence reduces business demand, strengthens the up covering power of DPCH.In the TD-SCDMA system, can equivalence increase up processing gain by the ascending time slot quantity that increases the carrying uplink business data, thereby strengthen the up covering power of DPCH.
The proportional arrangement of supposing ascending time slot and descending time slot is 3: 3, the uplink business data of certain subscriber equipment is adjusted into the carrying of 3 time slot solid size roads by the carrying of single time slot solid size road, up processing gain can equivalence increase about 5dB, calculate according to the free space propagation model, covering power (being presented as covering radius) can strengthen 73%.
In order at utmost to strengthen up covering power, can be 5: 1 with the proportional arrangement of ascending time slot and descending time slot, thereby further strengthen the room for promotion of up covering power.If with the proportional arrangement of ascending time slot and descending time slot is 5: 1, the uplink business data of certain subscriber equipment can be carried at most on 5 ascending time slots, calculates according to the free space propagation model, and up covering power can strengthen 124%.
Further, can adopt the multicarrier bearing mode to increase up processing gain, under 5: 1 configuration of every carrier wave, utilize multi-transceiver technology to carry out the emission of upward signal, can increase the ascending time slot quantity of carrying uplink business data, suppose that number of carriers is 3, calculate that up covering power can strengthen 287% according to the free space propagation model.
In the communication process of base station and subscriber equipment, not only need to strengthen the up covering power of Traffic Channel DPCH, also need strengthen the up covering power of other uplink physical channel UpPCH and PRACH simultaneously, it realizes that principle is consistent with the realization principle of Traffic Channel DPCH.
Below, describe the uplink covering capacity control method of time division synchronization of the TD-SCDMA system that the embodiment of the invention provides in detail in conjunction with concrete application scenarios.The covering scene super far away of TD-SCDMA system mainly comprises three kinds of concrete application scenarioss:
Application scenarios one, subscriber equipment make a call in the near field or by ICQ, gradually away from the base station until reaching overlength distance, the uplink physical channel that needs to strengthen up covering power is DPCH;
Application scenarios two, subscriber equipment make a call under overlength distance or by ICQ, and keep the overlength distance with the base station always, and the uplink physical channel that needs to strengthen up covering power is UpPCH, PRACH and DPCH;
Application scenarios three, subscriber equipment make a call under overlength distance or by ICQ, move closer to the base station until reaching the near field, needing the uplink physical channel of the up covering power of enhancing is UpPCH, PRACH and DPCH, and follow-up along with subscriber equipment moves closer to the base station until reaching the near field, also need the up covering power of DPCH is returned to normal condition.
At three kinds of different application scenarioss, concrete implementing procedure is introduced respectively.Suppose in the TD-SCDMA system that the proportional arrangement of ascending time slot and descending time slot is 5: 1.
Embodiment one
Present embodiment is at application scenarios one, consistent in up initial synchronization and random access procedure and the prior art, be in the closed power control procedure under the DCH state, strengthen a kind of implementation method of the up covering power of DPCH, as shown in Figure 3, comprise following treatment step:
S300, subscriber equipment receive the emission adjustment instruction that the base station sends;
S301, subscriber equipment are adjusted instruction according to emission and are judged whether the transmission of uplink business data is satisfied the up covering power of DPCH and strengthened entry condition, if, then carry out S302, if not, then carry out S309 and promptly carry out follow-up processing flow according to prior art;
S302, subscriber equipment send the reconfiguration request of DPCH to the base station;
S303, base station be according to the reconfiguration request of the DPCH that receives, returns the indication of reshuffling of DPCH to subscriber equipment, is used to indicate increase to few ascending time slot that is used to carry uplink business data;
The recruitment that is used to carry the ascending time slot of uplink business data can be configured to fixed numbers, and can flexible configuration and adjustment.If the proportional arrangement of ascending time slot and descending time slot is 5: 1, the recruitment of ascending time slot mostly is 4 most for single carrier, if ascending time slot quantity is increased to maximum 5, the ascending time slot quantity that can adopt multi-transceiver technology further to increase to be used to carry uplink business data, carrier wave of every increase are equivalent to increases by 5 ascending time slot quantity;
S304, subscriber equipment return the response of reshuffling of DPCH according to the indication of reshuffling of the DPCH that receives to the base station;
S305, base station are according to the response of reshuffling of the DPCH that receives, the monitoring of opening the ascending time slot that indication is increased;
S306, subscriber equipment start the up covering power that strengthens DPCH, increase the ascending time slot that at least one is used to carry uplink business data;
S307, subscriber equipment are carried on uplink business data in the ascending time slot on DPCH and send;
Owing to increased at least one ascending time slot, the ascending time slot of carrying uplink business data is a plurality of in this step;
S308, base station receive the uplink business data that subscriber equipment sends in DPCH.
Wherein, subscriber equipment is when sending uplink business data, the base station sends control information to subscriber equipment by DPCH, the TPC (emissive power control command word) that comprises 2bit in the control information is used for closed power control, and the indication subscriber equipment sends the adjusted value that the required actual emission power of uplink business data increases or reduce fixed step size, if the TPC value is 11, then indication increases the adjusted value of fixed step size, if the TPC value is 00, then indication reduces the adjusted value of fixed step size; The SS (simultaneous bias order word) that also comprises 2bit in the control information, be used to keep uplink synchronous, the indication subscriber equipment sends the time offset increase of uplink business data or reduces the adjusted value of fixed step size, if the SS value is 11, then indication increases the adjusted value of fixed step size, if the SS value is 00, then indication reduces the adjusted value of fixed step size.
Along with subscriber equipment gradually away from the base station, according to the control information that the base station sends, subscriber equipment sends required actual emission power and the time offset of uplink business data can be increased gradually, therefore, in S101, TPC and SS all can be used as the preferable implementation of emission adjustment information.
If adjusting instruction, emission is TPC, the TPC that subscriber equipment sends according to the base station determines to send the required actual emission power of uplink business data, if this actual emission power is not less than the transmitting power thresholding of setting, the up covering power that DPCH is satisfied in the transmission of then confirming uplink business data strengthens entry condition, the transmitting power thresholding can be set at the maximum transmission power of subscriber equipment, also can set flexibly according to actual conditions;
If the emission adjustment information is SS, the SS that subscriber equipment sends according to the base station determines to send the required time offset of uplink business data, if this time offset is not less than the time migration threshold value of setting, the up covering power that DPCH is satisfied in the transmission of then confirming uplink business data strengthens entry condition.
Preferable, instruction is adjusted in emission also can take all factors into consideration TPC and SS, TPC and SS that subscriber equipment sends according to the base station, determine to send required time offset and the actual emission power of uplink business data, and strengthen the basis for estimation of entry condition as the up the covering power whether transmission of uplink business data satisfies DPCH, if this time offset is not less than the time migration threshold value of setting, and this actual emission power is not less than the maximum transmission power or the preset threshold of subscriber equipment, and then the up covering power enhancing entry condition of DPCH is satisfied in the transmission of definite uplink business data; Perhaps, the time migration threshold value that this time offset is not less than setting satisfies one with the maximum transmission power that this actual emission power is not less than subscriber equipment, and then the up covering power enhancing entry condition of DPCH is satisfied in the transmission of definite uplink business data.
Because the uplink business data of subscriber equipment is adjusted into the carrying of multi-slot solid size road by the carrying of single time slot solid size road, further, be adjusted into the carrying of multicarrier multi-slot solid size road, under super covering scene far away, effectively strengthened the up covering power of TD-SCDMA system.
Embodiment two
Embodiment two strengthens the implementation method of the up covering power of UpPCH at application scenarios two in up initial synchronization, as shown in Figure 4, comprise following treatment step:
S401, subscriber equipment are determined the path loss in Serving cell according to the measurement result of Serving cell Reference Signal Received Power and the reference transmit power of base station broadcast;
Reference transmit power is broadcast to all subscriber equipmenies in the sub-district by the base station in BCH (broadcast channel);
S402, subscriber equipment judge whether path loss is greater than or equal to the path loss threshold value of setting, if, then carry out S403, if not, then carry out S406 and promptly carry out follow-up processing flow according to prior art;
S403, subscriber equipment start the up covering power that strengthens UpPCH, and the code length that UpPTS is carried increases at least one times;
S404, subscriber equipment are carried on SYNC-UL (uplink synchronisation sign indicating number) among the UpPTS after the expansion and send;
S405, base station receive that subscriber equipment sends in UpPCH is carried on SYNC-UL among the UpPTS after the expansion.
The burst structure of UpPTS is shown in Fig. 5 a in the prior art, comprise the SYNC-UL of 128chip and the GP of 32chip, SYNC-UL is one group of PN sign indicating number, the burst structure of UpPTS in the embodiment of the invention after the expansion is shown in Fig. 5 b, the code length of UpPTS carrying is expanded to N * 128chip (N is greater than 1) from 128chip, can guarantee that by increasing processing gain UpPTS is correctly received in base station side.Because each radio frames is fixed as 10ms, so need take ascending time slot TS1 to the expansion of UpPTS, the code length that the TS1 of 0.675ms can carry reaches 864chip, makes code length that every carrier wave UpPTS can carry have the extending space near 7 times.
In case the base station detects the UpPTS that subscriber equipment sends, just can learn the time of advent and the received power of UpPTS, based on this, FPACH (Fast Physical Access Channal can be passed through in the base station, insert physical channel fast) send to launch to subscriber equipment and adjust instruction, the starting position indication that instruction comprises the RACH information emission level adjustment order and the UpPCH that receives is adjusted in this emission.
Because the indication of the starting position of the RACH information emission level adjustment order and the UpPCH that receives sends by FPACH, therefore need adjust existing FPACH frame structure, existing FPACH frame structure is as shown in table 1.Wherein, " the starting position indication of the UpPCH that receives " fields account 13bit; " RACH information emission level adjustment order " fields account 7bit, the adjusting range of agreement regulation launching electrical level-49dBm～+ 33dBm between, in order to expand the forward adjusting range of launching electrical level, can make amendment to agreement, also can define by the reservation position of 7bit, if the forward adjusting range of launching electrical level need increase 15dB, only 4 bits that need take among the LSB get final product.To the definition that the reservation position of 7bit is carried out, terminal equipment need be prenoticed in the base station.
Table 1
| Information field | Length (bits) |
| The signature reference number | 3(MSB) |
| Relative subframe numbers | 2 |
| The starting position indication (UpPCHPOS) of the UpPCH that receives | 13 |
| The transmission level order of RACH information | 7 |
| Keep position (default value is 0) | 7(LSB) |
After starting the up covering power that strengthens UpPCH, then can directly start the up covering power that strengthens PRACH, and definite PRACH goes up the quantity of the ascending time slot that increases according to path loss.Certainly, also can adopt the implementation method that in random access procedure, strengthens the up covering power of PRACH, as shown in Figure 6, comprise following treatment step:
S600, subscriber equipment receive the emission adjustment instruction that the base station sends;
The emission adjustment instruction that S601, subscriber equipment send according to the base station, judge whether the transmission of RACH information satisfies the up covering power enhancing entry condition of PRACH, if then carry out S602, if not, then carry out S605 and promptly then carry out follow-up processing flow according to prior art;
In this step, the emission adjustment instruction that subscriber equipment sends according to the base station judges that whether the transmission of RACH information is satisfied the up covering power of PRACH and strengthened entry condition, specifically comprises:
The RACH information emission level adjustment order that subscriber equipment sends according to the base station determines to send the required actual emission power of RACH information;
Judge whether this actual emission power is not less than the transmitting power threshold value of setting, if, then the up covering power enhancing entry condition of PRACH is satisfied in the transmission of RACH information, otherwise the up covering power enhancing entry condition of PRACH is not satisfied in the transmission of RACH information;
Perhaps,
Subscriber equipment is indicated according to the starting position of the UpPCH that receives that the base station sends, determines to send the required time offset of RACH information;
Judge whether this time offset is not less than the time migration threshold value of setting, if, then the up covering power enhancing entry condition of PRACH is satisfied in the transmission of RACH information, otherwise the up covering power that PRACH is not satisfied in the transmission of RACH information strengthens entry condition;
S602, subscriber equipment start the up covering power that strengthens PRACH, increase the ascending time slot that at least one is used to carry RACH information;
S603, subscriber equipment are sending the RACH information-bearing on the PRACH in ascending time slot;
Owing to increased at least one ascending time slot, the ascending time slot of carrying uplink business data is a plurality of in this step;
S604, base station receive the RACH information that subscriber equipment sends in PRACH.
Afterwards, subscriber equipment will receive the response that the base station is returned at the SCCPCH corresponding to PRACH, whether the RACH information that the indication subscriber equipment sends is received, if be received, to on Traffic Channel, set up uplink downlink after finishing Signalling exchange, and the number of timeslots of indicating up channel to take, entering the DCH state simultaneously is the closed power control procedure.At the DCH state is in the closed power control procedure, strengthens the implementation method of the up covering power of DPCH, and the method that provides among the embodiment one can be provided.
Embodiment three
Embodiment three strengthens the method for the up covering power of UpPCH and PRACH at application scenarios three in up initial synchronization and random access procedure, describe in detail in embodiment two, repeats no more; At the DCH state is in the closed power control procedure, strengthens the another kind of implementation method of the up covering power of DPCH, as shown in Figure 7, comprises following treatment step:
S700, subscriber equipment receive the emission adjustment instruction that the base station sends;
The emission adjustment instruction that S701, subscriber equipment send according to the base station, judge whether the transmission of uplink business data satisfies the up covering power enhancing entry condition of DPCH, if then carry out S702, if not, then carry out S707 and promptly carry out follow-up processing flow according to prior art;
S702, subscriber equipment send the reconfiguration request of DPCH to the base station, are used to ask to increase the ascending time slot that at least one is used to carry uplink business data;
The reconfiguration request of the DPCH that S703, base station basis receive is returned the affirmation of reshuffling of DPCH to subscriber equipment, and opens the monitoring to the ascending time slot of request increase;
S704, subscriber equipment start the up covering power that strengthens DPCH, increase the ascending time slot that at least one is used to carry uplink business data;
S705, subscriber equipment are carried on uplink business data in the ascending time slot on DPCH and send;
Owing to increased at least one ascending time slot, the ascending time slot of carrying uplink business data is a plurality of in this step;
S706, base station receive the uplink business data that subscriber equipment sends in DPCH.
It is pointed out that follow-uply, the up covering power of DPCH returned to the method for normal condition, comprise following handling process along with subscriber equipment moves closer to the base station:
The emission adjustment instruction that step 1, subscriber equipment send according to the base station, the up covering power that DPCH is satisfied in the transmission of affirmation uplink business data strengthens the condition of closing;
Step 2, subscriber equipment and base station are carried out the up covering power of DPCH and are recovered to consult;
Step 3, start the up covering power of recovering DPCH consulting to finish the back subscriber equipment, determine ascending time slot that is used to carry uplink business data of use;
Step 4, subscriber equipment are carried on uplink business data in the ascending time slot on DPCH and send;
The ascending time slot of carrying uplink business data is one in this step.
Uplink business data reverts to the carrying of single time slot solid size road again by the carrying of multi-slot solid size road, up covering power with DPCH under near the situation of base station returns to normal condition, reduce the ascending time slot resource that each subscriber equipment takies, help the safeguards system capacity.
Based on above analysis, the embodiment of the invention provides the uplink covering capacity control method of time division synchronization of a kind of TD-SCDMA system, as shown in Figure 8, comprising:
The emission adjustment instruction that S801, subscriber equipment send according to the base station, the up covering power that uplink physical channel is satisfied in the transmission of affirmation upstream data strengthens entry condition;
S802, subscriber equipment start the up covering power that strengthens uplink physical channel, increase the ascending time slot that at least one is used to carry upstream data;
S803, subscriber equipment are carried on upstream data in the ascending time slot on uplink physical channel and send.
Wherein, uplink physical channel can be PRACH, and then upstream data is a RACH information; Uplink physical channel also can be DPCH, and then upstream data is a uplink business data.At uplink physical channel is under the situation of DPCH, and subscriber equipment start to strengthen before the up covering power of uplink physical channel, comprises that also subscriber equipment and base station carry out the step that the up covering power of DPCH strengthens negotiation.
Preferable, this method also comprises:
In up initial synchronization, subscriber equipment is determined the path loss in Serving cell according to the measurement result of Serving cell Reference Signal Received Power and the reference transmit power of base station broadcast;
When described path loss was not less than the path loss threshold value of setting, subscriber equipment started the up covering power that strengthens ascending pilot channel UpPCH, and determining increases at least one times with the code length of uplink pilot time slot UpPTS carrying; And
On UpPCH, uplink synchronisation sign indicating number SYNC-UL is carried among the UpPTS after the expansion and sends.
Accordingly, the embodiment of the invention provides a kind of subscriber equipment, as shown in Figure 9, comprising:
Confirmation unit 901: the emission adjustment that is used for sending according to the base station is instructed, and the up covering power that uplink physical channel is satisfied in the transmission of affirmation upstream data strengthens entry condition;
Start unit 902: be used to start the up covering power that strengthens uplink physical channel, increase the ascending time slot that at least one is used to carry upstream data;
Transmitting element 903: be used on uplink physical channel, upstream data being carried on ascending time slot and send.
The embodiment of the invention is by the adjustment to the ascending time slot quantity of miscellaneous service/carrying in the existing TD-SCDMA system, and equivalence has reduced the C/I of business demand, has strengthened the up covering power of TD-SCDMA system; The embodiment of the invention is to the improvement of present agreement and perfect, do not increasing under the prerequisites such as antenna size, transmitting power, realized the enhancing of the up covering powers of all uplink physical channels (UpPCH, PRACH, PDCH) under super covering scene far away, realized in the quality of service that in guaranteeing the TD-SCDMA system signal under the super covering scene far away covers.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (13)
1. the uplink covering capacity control method of time division synchronization of a TD SDMA access TD-SCDMA system is characterized in that, comprising:
The emission adjustment instruction that subscriber equipment sends according to the base station, the up covering power that uplink physical channel is satisfied in the transmission of affirmation upstream data strengthens entry condition;
Subscriber equipment starts the up covering power that strengthens uplink physical channel, increases the ascending time slot that at least one is used to carry described upstream data; And
On uplink physical channel, described upstream data is carried in the ascending time slot and sends.
2. the method for claim 1 is characterized in that, described uplink physical channel is DPCH DPCH, and described upstream data is a uplink business data; And
Described subscriber equipment starts before the up covering power that strengthens uplink physical channel, also comprises:
The up covering power that DPCH is carried out in subscriber equipment and base station strengthens negotiation.
3. method as claimed in claim 2 is characterized in that, described emission adjustment instruction comprises emissive power control command word TPC; And
The method of the up covering power enhancing entry condition of DPCH is satisfied in the emission adjustment instruction that subscriber equipment sends according to the base station, the transmission of affirmation uplink business data, comprising:
The TPC that subscriber equipment sends according to the base station determines to send the required actual emission power of uplink business data;
If described actual emission power is not less than the transmitting power threshold value of setting, the up covering power that DPCH is satisfied in the transmission of then confirming uplink business data strengthens entry condition.
4. method as claimed in claim 2 is characterized in that, described emission adjustment instruction comprises simultaneous bias order word SS; And
The method of the up covering power enhancing entry condition of DPCH is satisfied in the emission adjustment instruction that subscriber equipment sends according to the base station, the transmission of affirmation uplink business data, specifically comprises:
The SS that subscriber equipment sends according to the base station determines to send the required time offset of uplink business data;
If described time offset is not less than the time migration threshold value of setting, the up covering power that DPCH is satisfied in the transmission of then confirming uplink business data strengthens entry condition.
5. method as claimed in claim 2 is characterized in that, described emission adjustment instruction comprises emissive power control command word TPC and simultaneous bias order word SS; And
The method of the up covering power enhancing entry condition of DPCH is satisfied in the emission adjustment instruction that subscriber equipment sends according to the base station, the transmission of affirmation uplink business data, comprising:
TPC and SS that subscriber equipment sends according to the base station determine to send required actual emission power and the time offset of uplink business data;
If described actual emission power is not less than the transmitting power threshold value of setting, and/or described time offset is not less than the time migration threshold value of setting, and the up covering power that DPCH is satisfied in the transmission of then confirming uplink business data strengthens entry condition.
6. method as claimed in claim 2 is characterized in that, the up covering power that DPCH is carried out in described subscriber equipment and base station strengthens negotiation, specifically comprises:
Subscriber equipment is used to ask to increase the ascending time slot that at least one is used to carry uplink business data to the reconfiguration request of base station transmission DPCH;
The base station is returned the affirmation of reshuffling of DPCH according to the described reconfiguration request that receives to subscriber equipment, and opens the monitoring to the ascending time slot of request increase.
7. method as claimed in claim 2 is characterized in that, the up covering power that DPCH is carried out in described subscriber equipment and base station strengthens negotiation, specifically comprises:
Subscriber equipment sends the reconfiguration request of DPCH to the base station;
The base station is according to the reconfiguration request that receives, returns the indication of reshuffling of DPCH to subscriber equipment, is used to indicate increase to few ascending time slot that is used to carry uplink business data;
Subscriber equipment is according to DPCH is returned in the response of reshuffling from indication to the base station of reshuffling that receives;
The base station is according to the response of reshuffling that receives, the monitoring of opening the ascending time slot that indication is increased.
8. as the arbitrary described method of claim 2 to 7, it is characterized in that, also comprise:
The emission adjustment instruction that subscriber equipment sends according to the base station, the up covering power that DPCH is satisfied in the transmission of affirmation uplink business data strengthens the condition of closing;
Subscriber equipment and base station are carried out the up covering power of DPCH and are recovered to consult;
Subscriber equipment starts the up covering power of recovering DPCH after negotiation is finished, and determines to use an ascending time slot that is used to carry uplink business data; And
On DPCH, described uplink business data is carried in the ascending time slot and sends.
9. the method for claim 1 is characterized in that, described uplink physical channel is Physical Random Access Channel PRACH, and described upstream data is a Random Access Channel RACH information.
10. method as claimed in claim 9 is characterized in that, described emission adjustment instruction comprises RACH information emission level adjustment order;
The method of the up covering power enhancing entry condition of PRACH is satisfied in the emission adjustment instruction that subscriber equipment sends according to the base station, the transmission of affirmation RACH information, comprising:
The RACH information emission level adjustment order that subscriber equipment sends according to the base station determines to send the required actual emission power of RACH information;
If described actual emission power is not less than the transmitting power threshold value of setting, the up covering power that PRACH is satisfied in the transmission of then confirming RACH information strengthens entry condition.
11. method as claimed in claim 9 is characterized in that, described emission adjustment instruction comprises the starting position indication of the ascending pilot channel UpPCH that receives;
The method of the up covering power enhancing entry condition of PRACH is satisfied in the emission adjustment instruction that subscriber equipment sends according to the base station, the transmission of affirmation RACH information, comprising:
Subscriber equipment is indicated according to the starting position of the UpPCH that receives that the base station sends, determines to send the required time offset of RACH information;
If described time offset is not less than the time migration threshold value of setting, the up covering power that PRACH is satisfied in the transmission of then confirming RACH information strengthens entry condition.
12. the method for claim 1 is characterized in that, also comprises:
In up initial synchronization, subscriber equipment is determined the path loss in Serving cell according to the measurement result of Serving cell Reference Signal Received Power and the reference transmit power of base station broadcast;
When described path loss was not less than the path loss threshold value of setting, subscriber equipment started the up covering power that strengthens ascending pilot channel UpPCH, and the code length that uplink pilot time slot UpPTS is carried increases at least one times; And
On UpPCH, uplink synchronisation sign indicating number SYNC-UL is carried among the UpPTS after the expansion and sends.
13. a subscriber equipment is characterized in that, comprising:
Confirmation unit, the emission adjustment that is used for sending according to the base station is instructed, and the up covering power that uplink physical channel is satisfied in the transmission of affirmation upstream data strengthens entry condition;
Start unit is used to start the up covering power that strengthens uplink physical channel, increases the ascending time slot that at least one is used to carry described upstream data;
Transmitting element is used on uplink physical channel described upstream data being carried on ascending time slot and sends.
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| CN2008102404324A CN101754344B (en) | 2008-12-19 | 2008-12-19 | Uplink covering capacity control method of time division synchronization code division multiple access (TD-SCDMA) system and user equipment |
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| CN2008102404324A CN101754344B (en) | 2008-12-19 | 2008-12-19 | Uplink covering capacity control method of time division synchronization code division multiple access (TD-SCDMA) system and user equipment |
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| CN101754344B true CN101754344B (en) | 2011-11-09 |
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| CN103795434B (en) * | 2010-10-21 | 2017-04-26 | 高通股份有限公司 | Facilitating uplink synchronization in TD-SCDMA multi-carrier systems |
| WO2014153745A1 (en) * | 2013-03-27 | 2014-10-02 | 富士通株式会社 | Transmit power determining method and apparatus and communications system |
| CN104348580A (en) * | 2013-08-06 | 2015-02-11 | 夏普株式会社 | Downlink physical channel transmitting and receiving methods, base station and user equipment |
| CN104427459B (en) * | 2013-08-27 | 2018-04-20 | 华为技术有限公司 | A kind of data transmission method, terminal and base station |
| CN103702407B (en) * | 2013-12-12 | 2017-04-19 | 大唐移动通信设备有限公司 | Method and device for synchronization power control of TD-SCDMA (Time Division Synchronization Code Division Multiple Access) dedicated channel |
| CN105848172B (en) * | 2013-12-27 | 2019-07-02 | 京信通信系统（中国）有限公司 | A kind of adaptation method and device of the covering of GSM base discharge signal |
| CN104812084A (en) * | 2014-01-28 | 2015-07-29 | 中兴通讯股份有限公司 | Configuration information sending, obtaining method and accessing method, communication node and system |
| CN105264987B (en) * | 2014-01-29 | 2019-11-12 | 华为技术有限公司 | The indicating means of MPS process enhancement mode and base station |
| EP2903363B1 (en) * | 2014-01-30 | 2023-08-16 | Alcatel Lucent | Indicating properties of a user equipment to a network control node |
| CN105379371B (en) * | 2014-06-18 | 2020-01-31 | 华为技术有限公司 | starting method for uplink enhanced transmission and related equipment |
| EP2981134B1 (en) * | 2014-07-30 | 2017-06-21 | Panasonic Intellectual Property Corporation of America | Cell selection and reselection in normal and enhanced coverage mode |
| CN107391551B (en) * | 2017-06-06 | 2020-04-14 | 广东广业开元科技有限公司 | Web service data analysis method and system based on data mining |
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