CA2367550C - Common packet channel - Google Patents
Common packet channel Download PDFInfo
- Publication number
- CA2367550C CA2367550C CA002367550A CA2367550A CA2367550C CA 2367550 C CA2367550 C CA 2367550C CA 002367550 A CA002367550 A CA 002367550A CA 2367550 A CA2367550 A CA 2367550A CA 2367550 C CA2367550 C CA 2367550C
- Authority
- CA
- Canada
- Prior art keywords
- spread
- spectrum
- control information
- transmitting
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001228 spectrum Methods 0.000 claims abstract 72
- 238000000034 method Methods 0.000 claims 8
- 230000005540 biological transmission Effects 0.000 claims 6
- 238000001514 detection method Methods 0.000 claims 2
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2662—Arrangements for Wireless System Synchronisation
- H04B7/2668—Arrangements for Wireless Code-Division Multiple Access [CDMA] System Synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/004—Orthogonal
- H04J13/0051—Orthogonal gold
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/48—TPC being performed in particular situations during retransmission after error or non-acknowledgment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
An improvement to a code-division-multiple-access (CDMA) system employing spread-spectrum modulation, with the CDMA system having a base station (BS) and a plurality of remote stations. The base station has a BS-spread-spectrum transmitter and a BS-spread-spectrum receiver. A remote station has an RS-spread-spectrum transmitter and an RS-spread-spectrum receiver. The BS transmitter transmits a broadcast common-synchronization channel, which includes a frame-timing signal. The broadcast common-synchronization channel has a common chip-sequence signal, which is common to the plurality of remote stations. In response to the RS-spread-spectrum receiver receiving the broadcast common-synchronization channel, and determining frame timing from the frame-timing signal, an RS-spread-spectrum transmitter transmits an access-burst signal, which RS-power-control signals transmitted in time, at increasing power levels. The BS-spread-spectrum transmitter, responsive to the BS-spread-spectrum receiver receiving the access-burst signal, and detecting an RS-preamble signal, transmits an acknowledgment signal. In response to the first RS-spread-spectrum receiver receiving the acknowledgment signal, the first RS-spread-spectrum transmitter transmits a spread-spectrum signal having data. The BS-spread-spectrum transmitter transmits either data or power-control information to RS-spread-spectrum receiver.
Claims (13)
1 A method of transferring data for one of a plurality of wireless remote stations (RS) through a base station (BS) of a wireless telecommunication network, the base station comprising a BS-spread-spectrum transmitter and a BS-spread-spectrum receiver, the method comprising the steps of:
- transmitting a frame-timing signal from said BS-spread-spectrum transmitter over a broadcast common-synchronization channel having a common chip-sequence signal;
- receiving the broadcast common-synchronization channel comprising a frame timing signal at an RS-spread-spectrum receiver of the one RS;
- determining frame timing at an RS-spread-spectrum receiver of the one RS from the received frame-timing signal;
- transmitting an access-burst signal from an RS-spread-spectrum transmitter of the one RS, the access-burst signal comprising a plurality of segments, each comprising a predefined preamble and a pilot signal, transmitting the segments at step-wise sequentially increasing power levels, the access burst signal starting at the beginning of an access slot, as defined by the frame timing;
- receiving at least one segment of the access-burst signal at said BS
spread-spectrum receiver at a detected-power level, that segment comprising a preamble with sufficient power level;
- transmitting an acknowledgment from said BS-spread-spectrum transmitter, in response to the receipt of the at least one segment of the access-burst signal and corresponding to the detected preamble;
- receiving the acknowledgment at said RS-spread-spectrum receiver and ceasing transmission of the access burst signal in response thereto;
- transmitting a spread-spectrum signal comprising any of data and power control information from said RS-spread-spectrum transmitter, in response to the receipt of the acknowledgment; and - receiving the spread-spectrum signal comprising any of data and power control information at said BS-spread-spectrum receiver.
- transmitting a frame-timing signal from said BS-spread-spectrum transmitter over a broadcast common-synchronization channel having a common chip-sequence signal;
- receiving the broadcast common-synchronization channel comprising a frame timing signal at an RS-spread-spectrum receiver of the one RS;
- determining frame timing at an RS-spread-spectrum receiver of the one RS from the received frame-timing signal;
- transmitting an access-burst signal from an RS-spread-spectrum transmitter of the one RS, the access-burst signal comprising a plurality of segments, each comprising a predefined preamble and a pilot signal, transmitting the segments at step-wise sequentially increasing power levels, the access burst signal starting at the beginning of an access slot, as defined by the frame timing;
- receiving at least one segment of the access-burst signal at said BS
spread-spectrum receiver at a detected-power level, that segment comprising a preamble with sufficient power level;
- transmitting an acknowledgment from said BS-spread-spectrum transmitter, in response to the receipt of the at least one segment of the access-burst signal and corresponding to the detected preamble;
- receiving the acknowledgment at said RS-spread-spectrum receiver and ceasing transmission of the access burst signal in response thereto;
- transmitting a spread-spectrum signal comprising any of data and power control information from said RS-spread-spectrum transmitter, in response to the receipt of the acknowledgment; and - receiving the spread-spectrum signal comprising any of data and power control information at said BS-spread-spectrum receiver.
2. The method of claim 1, wherein the pilot signal could be eliminated by being set to a zero power level.
3. The method of one of claims 1 to 2, wherein the transmission of the preamble ceases if the remote station has transmitted a maximum allowed number of preambles.
4. The method of claim 3, wherein upon start of data transmission from the RS-spread-spectrum transmitter, any of data and power control information is transmitted from the BS-spread-spectrum transmitter and received by the RS-spread-spectrum receiver.
5. The method of one of claims 1 to 4, further comprising:
- transmitting a selected one of a plurality of collision-detection (CD) codes by said RS-spread-spectrum transmitter, in response to receipt of the acknowledgment;
- detecting by the BS-spread-spectrum receiver the selected CD code from the RS-spread-spectrum transmitter;
- transmitting a BS-CD code from said BS-spread-spectrum transmitter;
and - if the RS-spread-spectrum receiver detects the BS-CD code, transmitting any of data and power control information to said base station, from said RS-spread-spectrum transmitter.
- transmitting a selected one of a plurality of collision-detection (CD) codes by said RS-spread-spectrum transmitter, in response to receipt of the acknowledgment;
- detecting by the BS-spread-spectrum receiver the selected CD code from the RS-spread-spectrum transmitter;
- transmitting a BS-CD code from said BS-spread-spectrum transmitter;
and - if the RS-spread-spectrum receiver detects the BS-CD code, transmitting any of data and power control information to said base station, from said RS-spread-spectrum transmitter.
6. The method of one of claims 3 to 5, wherein - transmitting the spread-spectrum signal from the RS-spread-spectrum transmitter is at power levels based on power control information received from the BS-spread-spectrum transmitter, and - transmitting any of data and power control information from the BS-spread-spectrum transmitter is at power levels based on power control information received from the RS-spread-spectrum transmitter.
7. The method of one of claims 3 to 6, wherein - transmitting the spread-spectrum signal from the RS-spread-spectrum transmitter begins with transmitting first power control information, followed in time by any of data and power control information, and - transmitting any of data and power control information from the BS-spread-spectrum transmitter begins with transmitting first power control information, followed in time by any of data and power control information.
8. A code-division-multiple-access (CDMA) system employing spread-spectrum modulation, the CDMA system comprising a base station (BS) and a plurality of remote stations (RS), comprising:
- a BS spread-spectrum transmitter located at said base station, for transmitting a broadcast common-synchronization channel having a common chip-sequence signal, the broadcast common-synchronization comprising a frame-timing signal;
- an RS-spread-spectrum receiver, located at one of the remote stations, for receiving the broadcast common-synchronization channel, and determining frame timing from the frame-timing signal;
- an RS-spread-spectrum transmitter, located the one remote station, for transmitting an access-burst signal, the access-burst signal comprising a plurality of segments being transmitted at step-wise sequentially increasing power levels and having a pre-defined duration between them, each segment comprising a predefined preamble;
- a BS spread-spectrum receiver at said base station for receiving at least one segment of the access-burst signal at a detected-power level, that segment comprising a preamble with sufficient power level;
- said BS-spread-spectrum transmitter for transmitting an acknowledgment signal responsive to receiving the at least one segment;
- said RS-spread-spectrum receiver for receiving the acknowledgment signal;
- said RS-spread-spectrum transmitter for ceasing transmission of the access-burst signal and transmitting a spread-spectrum signal comprising any of data and power control information, responsive to the receipt of the acknowledgment signal; and - said BS-spread-spectrum transmitter for transmitting any of data and power-control information, to said RS-spread-spectrum receiver.
- a BS spread-spectrum transmitter located at said base station, for transmitting a broadcast common-synchronization channel having a common chip-sequence signal, the broadcast common-synchronization comprising a frame-timing signal;
- an RS-spread-spectrum receiver, located at one of the remote stations, for receiving the broadcast common-synchronization channel, and determining frame timing from the frame-timing signal;
- an RS-spread-spectrum transmitter, located the one remote station, for transmitting an access-burst signal, the access-burst signal comprising a plurality of segments being transmitted at step-wise sequentially increasing power levels and having a pre-defined duration between them, each segment comprising a predefined preamble;
- a BS spread-spectrum receiver at said base station for receiving at least one segment of the access-burst signal at a detected-power level, that segment comprising a preamble with sufficient power level;
- said BS-spread-spectrum transmitter for transmitting an acknowledgment signal responsive to receiving the at least one segment;
- said RS-spread-spectrum receiver for receiving the acknowledgment signal;
- said RS-spread-spectrum transmitter for ceasing transmission of the access-burst signal and transmitting a spread-spectrum signal comprising any of data and power control information, responsive to the receipt of the acknowledgment signal; and - said BS-spread-spectrum transmitter for transmitting any of data and power-control information, to said RS-spread-spectrum receiver.
9. The CDMA system as claimed in claim 8, wherein the RS-spread-spectrum transmitter is adapted to cease transmission of the preamble ceases if the remote station has transmitted a maximum allowed number of preambles.
10. The CDMA system of one of claims 8 to 9, wherein the BS-spread-spectrum transmitter is adapted to transmit any of data and power control information upon start of data transmission from the RS-spread-spectrum transmitter, and wherein the RS-spread-spectrum receiver is adapted to receive the power control information.
11. The CDMA system of one of claims 8 to 10, wherein:
- said RS-spread-spectrum transmitter transmits a selected RS-collision-detection (CD) preamble from a plurality of RS-CD preambles, in response to receipt of the acknowledgment signal;
- said BS-spread-spectrum receiver detects the selected RS-CD
preamble;
- said BS-spread-spectrum transmitter transmits a BS-CD preamble in response to detecting the selected RS-CD preamble;
said RS-spread-spectrum receiver detects the BS-CD preamble; and - responsive to said receipt of the BS-CD preamble, said RS-spread-spectrum transmitter transmits any of data and power control information to said base station.
- said RS-spread-spectrum transmitter transmits a selected RS-collision-detection (CD) preamble from a plurality of RS-CD preambles, in response to receipt of the acknowledgment signal;
- said BS-spread-spectrum receiver detects the selected RS-CD
preamble;
- said BS-spread-spectrum transmitter transmits a BS-CD preamble in response to detecting the selected RS-CD preamble;
said RS-spread-spectrum receiver detects the BS-CD preamble; and - responsive to said receipt of the BS-CD preamble, said RS-spread-spectrum transmitter transmits any of data and power control information to said base station.
12. The CDMA system of one of claims 10 to 11, wherein - transmitting the spread-spectrum signal from the RS-spread-spectrum transmitter is at power levels based on power control information received from the BS-spread-spectrum transmitter, and - transmitting any of data and power control information from the BS-spread-spectrum transmitter is at power levels based on power control information received from the RS-spread-spectrum transmitter.
13. The CDMA system of one of claims 10 to 12, wherein - transmitting the spread-spectrum signal from the RS-spread-spectrum transmitter begins with transmitting first power control information, followed in time by any of data and power control information, and - transmitting any of data and power control information from the BS-spread-spectrum transmitter begins with transmitting first power control information, followed in time by any of data and power control information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2627033A CA2627033C (en) | 1999-03-22 | 2000-03-21 | Common packet channel |
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/273,508 | 1999-03-22 | ||
| US09/273,508 US6169759B1 (en) | 1999-03-22 | 1999-03-22 | Common packet channel |
| US09/275,010 | 1999-03-24 | ||
| US09/275,010 US6389056B1 (en) | 1999-03-22 | 1999-03-24 | Pre-data power control common packet channel |
| US09/304,345 US6606341B1 (en) | 1999-03-22 | 1999-05-04 | Common packet channel with firm handoff |
| US09/304,345 | 1999-05-04 | ||
| PCT/US2000/007348 WO2000057591A1 (en) | 1999-03-22 | 2000-03-21 | Common packet channel |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2627033A Division CA2627033C (en) | 1999-03-22 | 2000-03-21 | Common packet channel |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| CA2367550E CA2367550E (en) | 2000-09-28 |
| CA2367550A1 CA2367550A1 (en) | 2000-09-28 |
| CA2367550C true CA2367550C (en) | 2008-11-18 |
Family
ID=27402579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002367550A Expired - Fee Related CA2367550C (en) | 1999-03-22 | 2000-03-21 | Common packet channel |
Country Status (24)
| Country | Link |
|---|---|
| US (2) | US6606341B1 (en) |
| EP (1) | EP1145469B1 (en) |
| JP (3) | JP3515731B2 (en) |
| KR (1) | KR100457144B1 (en) |
| CN (1) | CN100338890C (en) |
| AP (1) | AP1451A (en) |
| AT (3) | ATE362239T1 (en) |
| AU (1) | AU755527B2 (en) |
| BR (1) | BR0010776A (en) |
| CA (1) | CA2367550C (en) |
| CZ (1) | CZ20013425A3 (en) |
| DE (3) | DE60034831T2 (en) |
| DZ (1) | DZ3024A1 (en) |
| EA (1) | EA004523B1 (en) |
| HK (2) | HK1061477A1 (en) |
| HU (1) | HUP0203207A2 (en) |
| IL (1) | IL135215A0 (en) |
| MA (1) | MA26146A1 (en) |
| MX (1) | MXPA01009611A (en) |
| NZ (1) | NZ513948A (en) |
| OA (1) | OA11361A (en) |
| PL (1) | PL350937A1 (en) |
| TW (1) | TW567691B (en) |
| WO (1) | WO2000057591A1 (en) |
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