CA2461319C - Contact management for mobile communication devices in wireless packet switched networks - Google Patents

Contact management for mobile communication devices in wireless packet switched networks Download PDF

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Publication number
CA2461319C
CA2461319C CA002461319A CA2461319A CA2461319C CA 2461319 C CA2461319 C CA 2461319C CA 002461319 A CA002461319 A CA 002461319A CA 2461319 A CA2461319 A CA 2461319A CA 2461319 C CA2461319 C CA 2461319C
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CA
Canada
Prior art keywords
message
decode
mobile communication
communication device
history list
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 - Lifetime
Application number
CA002461319A
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French (fr)
Other versions
CA2461319A1 (en
CA2461319E (en
Inventor
Matthias Wandel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BlackBerry Ltd
Original Assignee
Research in Motion Ltd
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Filing date
Publication date
Application filed by Research in Motion Ltd filed Critical Research in Motion Ltd
Publication of CA2461319A1 publication Critical patent/CA2461319A1/en
Application granted granted Critical
Publication of CA2461319C publication Critical patent/CA2461319C/en
Publication of CA2461319E publication Critical patent/CA2461319E/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities

Abstract

Methods and apparatus for maintaining contact with a wireless communication network improve the timeliness in which traffic is delivered to a mobile communication device in marginal coverage areas. The number of times the mobile device informs the network of its presence in such coverage may be reduced based on predetermined network characteristics. In one illustrative example, the method involves continually maintaining and updating a message decode history list in memory and comparing it with a predetermined paging pattern of the network. The message decode history list keeps track of whether or not each message of a most recent plurality of regularly broadcasted messages has been successfully decoded. An update message which informs the network of the mobile device is transmitted in response to identifying that unsuccessful message decode indicators in the history list overlap with all page transmission periods of the network paging pattern. Conversely, the update message is not normally transmitted in response to identifying that any successful message decode indicator in the history list overlaps with any page transmission period of the network paging pattern.

Claims (52)

1. In a mobile communication device, a method of maintaining contact with a wireless communication network comprising the acts of:
monitoring a wireless communication channel;
determining a received signal strength of signals on the wireless communication channel;
attempting to decode a message from the signals;
continually repeating the acts of monitoring, determining, and attempting to decode;
during the repeated acts of monitoring, determining, and attempting to decode:
transmitting an update message which informs the network of the mobile communication device in response to an inadequate communication condition being identified, the update message being transmitted after a predetermined condition is satisfied; and refraining from transmitting an update message to the network in response to a message during a page transmission period being successfully decoded, even when the received signal strength is below a predetermined threshold for the page transmission period.
2. The method of claim 1, wherein the inadequate communication condition comprises an inadequate decoding condition where one or more messages have been unsuccessfully decoded.
3. The method of claim 1, wherein the inadequate communication condition comprises a determination that messages for all page transmission periods of a network paging pattern have been unsuccessfully decoded.
4. The method of claim 1, further comprising the act of:
identifying when communication conditions are adequate before transmitting the update message.
5. The method of claim 1, further comprising the act of:

delaying for a predetermined period of time before transmitting the update message.
6. The method of claim 1, wherein the act of attempting to decode a message from the signals comprises the further act of attempting to decode a broadcasted page message.
7. The method of claim 1, wherein the act of refraining from transmitting the update message comprises the further act of refraining from transmitting the update message unless the successfully decoded message notifies the mobile communication device of an upcoming data communication session.
8. A mobile communication device, comprising:
a receiver;
a transmitter;
an antenna coupled to the receiver and the transmitter;
one or more processors coupled to the receiver and the transmitter;
the one or more processors configured for:
controlling the receiver to monitor a wireless communication channel;
determining a received signal strength of signals on the wireless communication channel;
attempting to decode a message from the signals;
continually repeating the acts of controlling the receiver, determining, and attempting to decode;
during the repeated acts of controlling the receiver, determining, and attempting to decode:
causing an update message which informs the network of the mobile communication device to be transmitted through the transmitter after an inadequate communication condition is identified, the updated message being transmitted after a predetermined condition is satisfied; and refraining from causing an update message to be transmitted through the transmitter in response to a message during a page transmission period being successfully decoded, even when the received signal strength is below a predetermined threshold for the page transmission period.
9. The mobile communication device of claim 8, wherein the inadequate communication condition.comprises an inadequate decoding condition where one or more messages have been unsuccessfully decoded.
10. The mobile communication device of claim 8, wherein the inadequate communication condition comprises a determination that messages for all page transmission periods of a predetermined network paging pattern have been unsuccessfully decoded.
11. The mobile communication device of claim 8 wherein the one or more processors are further configured for identifying when communication conditions are adequate before transmitting the update message.
12. The mobile communication device of claim 8 wherein the one or more processors are further configured for delaying for a predetermined period of time before transmitting the update message.
13. The mobile communication device of claim 8 wherein the update message comprises one of a location area update message and a routing area update message.
14. The mobile communication device of claim 8 wherein, for attempting to decode a message from the signals, the one or more processors are further configured for attempting to decode a broadcasted page message.
15. In a mobile communication device, a method of maintaining contact with a wireless communication network comprising the acts of:
monitoring a wireless communication channel;
receiving, over the wireless communication channel, a message that notifies the mobile communication device of an upcoming data communication session;
transmitting one or more response messages in response to receiving the message;
after transmitting the one or more response messages, failing to receive further data communications associated with the message;
after failing to receive the further data communications associated with the message, detecting a predetermined condition; and in response to detecting the predetermined condition, causing the transmission of an update message which informs the network of the mobile communication device.
16. The method of claim 15, wherein the message comprises a broadcasted page message and the one or more response messages comprise one or more page response messages.
17. The method of claim 15, wherein the one or more response messages comprise one or more acknowledgement messages.
18. The method of claim 15, wherein the predetermined condition comprises an expiration of a timer.
19. The method of claim 15, wherein the predetermined condition comprises a detection of adequate communication condition.
20. The method of claim 15, wherein the predetermined condition comprises a detection of user-inputs at the mobile communication device.
21. A mobile communication device, comprising:
a receiver;
a transmitter;
an antenna coupled to the receiver and the transmitter;
one or more processors coupled to the receiver and the transmitter;
the one or more processors configured for:
controlling the receiver to monitor a wireless communication channel established with a wireless communication network;
receiving, through the receiver, a message that notifies the mobile communication device of an upcoming data communication session;
causing the transmission of one or more response messages through the transmitter in response to receiving the message;
after causing the transmission of the one or more response messages, failing to receive further data communications associated with the message through the receiver;

after failing to receive the data further communications associated with the message, detecting a predetermined condition; and in response to detecting the predetermined condition, causing the transmission of an update message which informs the network of the mobile communication device.
22. The mobile communication device of claim 21 wherein the one or more processors are configured for receiving a message comprising a broadcasted page message.
23. The mobile communication device of claim 21, wherein the one or more processors are further configured for causing the transmission of one or more response messages comprising one or more acknowledgement messages.
24. The mobile communication device of claim 21, wherein the predetermined condition comprises an expiration of a timer.
25. The mobile communication device of claim 21, wherein the predetermined condition comprises a detection of adequate communication condition.
26. The mobile communication device of claim 21, wherein the predetermined condition comprises a detection of user-inputs at the mobile communication device.
27. In a mobile communication device, a method of maintaining contact with a wireless communication network comprising the acts of:
maintaining a message decode history list;
comparing the message decode history list and a predetermined network paging pattern; and transmitting an update message which informs the network of the mobile communication device in response to identifying that one or more unsuccessful message decode periods in the message decode history list overlap with all page transmission periods in the predetermined network paging pattern.
28. The method of claim 27, further comprising:

refraining from transmitting the update message in response to identifying that any successful message decode period in the message decode history list overlaps with any page transmission period in the predetermined network paging pattern.
29. The method of claim 27, comprising the further act of:
delaying the act of transmitting the update message until communication conditions are adequate.
30. The method of claim 27, wherein the act of maintaining the message decode history list comprises the further act of maintaining a message decode history list with indicators that are determined based on whether or not messages are decoded.
31. The method of claim 27, wherein the act of maintaining the message decode history list comprises maintaining a message decode history list corresponding to a period of time equal to that of the predetermined network paging pattern.
32. The method of claim 27, wherein the act of maintaining the message decode history list comprises the further act of continually updating the message decode history list for a most recent period of time.
33. A mobile communication device, comprising:
a receiver;
a transmitter;
an antenna coupled to the receiver and the transmitter;
one or more processors coupled to the receiver and the transmitter;
a memory;
the one or more processors configured for:
maintaining a message decode history list in the memory;
comparing the message decode history list and a predetermined network paging pattern; and causing an update message to be transmitted through the transmitter after identifying that one or more unsuccessful message decode periods in the message decode history list overlap with all page transmission periods in the predetermined network paging pattern.
34. The mobile communication device of claim 33, wherein the one or more processors are further configured for:
refraining from causing the update message to be transmitted through the transmitter when any successful message decode period in the message decode history list overlaps with any page transmission period in the predetermined network paging pattern.
35. The mobile communication device of claim 33, wherein the one or more processors are further configured for delaying the transmission of the update message until communication conditions are adequate.
36. The mobile communication device of claim 33 wherein, for maintaining the message decode history list, the one or more processors are further configured for:
maintaining a message decode history list corresponding to a period of time equal to that of the predetermined network paging pattern.
37. The mobile communication device of claim 33 wherein, for maintaining the message decode history list, the one or more processors are further configured for:
maintaining a message decode history list covering a time period of the predetermined network paging pattern and comprising a plurality of temporally-ordered message decode indicators each of which cover a time period of a page broadcast interval.
38. The mobile communication device of claim 33 wherein, for maintaining the message decode history list, the one or more processors are further configured for:
maintaining a message decode history list having a plurality of message decode indicators, each being indicative of one of a successful message decode period and an unsuccessfully message decode period.
39. The mobile communication device of claim 33 wherein, for maintaining the message decode history list, the one or more processors are further configured for:
continually updating the message decode history list for a most recent time period.
40. A computer readable medium having computer program instructions stored thereon which are executable by one or more processors of a mobile communication device to perform a network update technique by monitoring a wireless communication channel;
determining a received signal strength of signals on the wireless communication channel;
attempting to decode a message from the signals; continually repeating the acts of monitoring, determining, and attempting to decode; during the repeated acts of monitoring, determining, and attempting to decode: causing an update message which informs the network of the mobile communication device to be transmitted in response to an inadequate communication condition being identified, the update message being transmitted after a predetermined condition is satisfied; and refraining from causing an update message to be transmitted to the network in response to a message during a page transmission period being successfully decoded, even when the received signal strength is below a predetermined threshold for the page transmission period.
41. The computer readable medium of claim 40, wherein the inadequate communication condition comprises an inadequate decoding condition where one or more messages have been unsuccessfully decoded.
42. The computer readable medium of claim 40, wherein the inadequate communication condition comprises a determination that messages for all page transmission periods of a network paging pattern have been unsuccessfully decoded.
43. The computer readable medium of claim 40, wherein the computer program instructions are further executable for:
identifying when communication conditions are adequate before transmitting the update message.
44. The computer readable medium of claim 40, wherein the computer program instructions are further executable for:
delaying for a predetermined period of time before transmitting the update message.
45. The computer readable medium of claim 40, wherein the computer program instructions are further executable for attempting to decode a message comprising a broadcasted page message.
46. The computer readable medium of claim 40, wherein the computer program instructions are further executable for refraining from causing the update message to be transmitted unless the successfully decoded message notifies the mobile communication device of an upcoming data communication session.
47. A computer readable medium having computer program instructions stored thereon which are executable by one or more processors of a mobile communication device to perform a network update technique by maintaining a message decode history list;
comparing the message decode history list and a predetermined network paging pattern;
and causing an update message which informs the network of the mobile communication device to be transmitted in response to identifying that one or more unsuccessful message decode periods in the message decode history list overlap with all page transmission periods in the predetermined network paging pattern.
48. The computer readable medium of claim 47, wherein the computer program instructions are further executable to refrain from transmitting the update message in response to identifying that any successful message decode period in the message decode history list overlaps with any page transmission period in the predetermined network paging pattern.
49. The computer readable medium of claim 47, wherein the computer program instructions are further executable to delay the act of transmitting the update message until communication conditions are adequate.
50. The computer readable medium of claim 47, wherein the computer program instructions are further executable to maintain a message decode history list with indicators that are determined based on whether or not messages are decoded.
51. The computer readable medium of claim 47, wherein the computer program instructions are further executable to maintain a message decode history list corresponding to a period of time equal to that of the predetermined network paging pattern.
52. The computer readable medium of claim 47, wherein the computer program instructions are further executable to continually update the message decode history list for a most recent period of time.
CA2461319A 2001-10-01 2002-09-27 Contact management for mobile communication devices in wireless packet switched networks Expired - Lifetime CA2461319E (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US32554501P 2001-10-01 2001-10-01
US60/325,545 2001-10-01
PCT/CA2002/001472 WO2003030575A1 (en) 2001-10-01 2002-09-27 Contact management for mobile communication devices in wireless packet switched networks

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CA2461319A1 CA2461319A1 (en) 2003-04-10
CA2461319C true CA2461319C (en) 2006-12-19
CA2461319E CA2461319E (en) 2011-11-15

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US (3) US6999729B2 (en)
EP (1) EP1433349B1 (en)
JP (1) JP4420670B2 (en)
CN (1) CN100486390C (en)
AT (2) ATE313234T1 (en)
BR (1) BR0213022A (en)
CA (1) CA2461319E (en)
DE (2) DE60215871T2 (en)
ES (2) ES2254724T3 (en)
HK (2) HK1065672A1 (en)
WO (1) WO2003030575A1 (en)

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CA2461319A1 (en) 2003-04-10
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JP4420670B2 (en) 2010-02-24
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US7373145B2 (en) 2008-05-13

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