Methods and apparatus for optimizing paging mechanisms and publication of dynamic paging mechanisms

• US 9,839,001 B2
• Filed: 03/23/2009
• Issued: 12/05/2017
• Est. Priority Date: 03/23/2009
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Choi, Hyung-Nam
• Primary Examiner(s): MAPA, MICHAEL Y
• Application Number:
  US12/409,398
• Publication Number:
  US 20100240400A1
• Time in Patent Office: 3,179 Days
• Field of Search: 455458, 455515, 4554261, 455450-454, 455434, 370254
• CPC Class Codes: H04W 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Methods and apparatus enabling a wireless network to dynamically change or implement paging mode operation, such as optimization based on one or more network parameters. In one embodiment, the wireless network is a cellular network (e.g., 3G UMTS or LTE), and both base stations and cellular user devices dynamically configure the paging mode operation based on various desired operational attributes relating to the network parameters. Such flexible paging mechanisms may be published to the network users via several methods, and users with appropriately enabled user devices may improve their power and applications performance. Base stations may also advantageously reclaim freed-up cellular resources to support other services. Legacy subscribers are also not affected.

Claims

1. A method of providing paging channel access for a cellular network, the paging channel access being optimized for utilization of network resources:

allocating one or more resources for paging channel access based at least in part on a ratio of enhanced devices to legacy devices on the cellular network;

providing a schedule for paging channel access to a plurality of user devices, the schedule identifying the allocated one or more resources; and

transmitting the schedule, the transmission enabling at least one of the one of the plurality of user devices to configure its modem to receive the allocated one or more resources.

2. The method of claim 1, wherein the act of providing the schedule comprises broadcasting the schedule via a common control channel.

3. The method of claim 1, wherein the schedule is particularly addressed to only a subset of the plurality of user devices.

4. The method of claim 3, wherein providing the schedule comprises broadcasting the schedule via a dedicated control channel.

5. The method of claim 1, wherein the act of allocating one or more resources comprises limiting paging channel access to only one of:

(i) a transmission time, (ii) a frequency band, or (iii) a spreading code.

6. The method of claim 1, wherein allocating one or more resources comprises limiting paging channel access to at least one of:

(i) a transmission time, (ii) a frequency band, or (iii) a spreading code.

7. The method of claim 1, wherein utilization of network resources is characterized by at least one of:

(i) total cell bandwidth, or (ii) level of bandwidth fragmentation.

8. A method of receiving one or more paging channel configurations by a user of a cellular network via at least a first message provided by the cellular network, the method comprising:

receiving file first message at a user device;

extracting a paging schedule from the first;

message, wherein the paging schedule is based at least in part on a ratio of enhanced devices to legacy devices on the cellular network;

configuring a modern interface of the user device to receive one or more paging channel notifications based at least in part on the paging schedule, wherein the act of configuring the modem interface comprises updating an internal schedule identifying one or more times and one or more frequency bands available for receiving paging channel notifications during at least one future discontinuous reception cycle; and

responsive to receiving a paging channel notification, determining if the received paging channel notification is for the user.

9. The method of claim 8, wherein the paging schedule is received over a common control channel.

10. The method of claim 8, wherein the paging schedule is particularly addressed to only a subset of user devices in the cellular network.

11. The method of claim 10, wherein the paging schedule is received over a dedicated control channel.

12. The method of claim 8, wherein the method is optimized for at least one of:

(i) total cell bandwidth, (ii) level of bandwidth fragmentation, and (iii) one or more characteristics of the user device.

13. Wireless base station apparatus, comprising:

a digital processor;

a wireless interface in data communication with the processor; and

a storage device in data communication with the processor, the storage device comprising computer-executable instructions that, when executed by the digital processor;

allocate an enhanced mode for paging channel transmissions in a cellular network based at least in part on one or more wireless network parameters, where the enhanced mode is limited to a first subset of frequency resources;

allocate a legacy mode for paging channel transmissions in a cellular network, the legacy mode limited to a second subset of frequency;

resources, wherein the allocation for the enhanced mode and the legacy mode is based at least in part on a ratio of enhanced devices to legacy devices on the cellular network;

transmit information relating to the enhanced mode via the wireless interface; and

transmit a paging channel transmission via the wireless interface based on the enhanced mode.

14. The apparatus of claim 13, wherein the wireless interface is operatively connected to the cellular network, and the one or more wireless network parameters comprise at least one of:

(i) total cellular cell bandwidth, (ii) level of bandwidth fragmentation, and (iii) one or more characteristics of a plurality of user devices associated with the cellular network.

15. The apparatus of claim 14, wherein the transmission of the information relating to the mode comprises transmission of information addressed to only a first subset of the plurality of user devices.

16. The apparatus of claim 14, wherein the transmission of the information relating to the mode comprises transmission of information addressed to the plurality of user devices via a cellular common control channel.

17. The apparatus of claim 13, wherein the wireless interface is operatively connected to a cellular network, and the one or more wireless network parameters comprise at least Radio Resource Connection (RRC) state.

18. The apparatus of claim 13, wherein the apparatus comprises an LTE-compliant macrocell base station.

19. The apparatus of claim 13, wherein the information relating to the mode comprises:

information regarding a carrier frequency on which the paging channel transmission is to be transmitted;

timing data according to which a paging identifier and a paging message are to be transmitted; and

information relating to a bandwidth size of one or more channels on which a user device may receive the paging identifier and paging message.

20. The apparatus of claim 19, wherein the information relating to the enhanced mode further comprises Radio Resource Connection (RRC) state information.

21. The apparatus of claim 19, wherein the one or more channels comprise a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH), and the paging identifier and paging message are to be transmitted on the PDCCH and the PDSCH, respectively.

22. The apparatus of claim 13, wherein the allocation of the enhanced mode for paging channel transmissions is based at least in part on the one or more wireless network parameters which comprises selecting one of a plurality of different modes, the plurality of modes being non-overlapping in time and frequency with respect to one another.

23. Wireless receiver apparatus, comprising:

a digital processor;

a wireless interface in data communication with the digital processor; and

a storage device in data communication with the processor,

the storage device comprising at least one computer program which is configured to, when run on the processor;

review a plurality of paging mode options;

select an individual one of the plurality of paging mode options;

receive, via the wireless interface, a schedule for paging channel transmissions in a cellular network, the schedule being associated with the selected paging mode, where the schedule is based at least in part on a ratio of enhanced devices to legacy devices on the cellular network and comprises one or more dynamically configured network resources;

configure the wireless interface to receive one or more paging channel notifications based at least in part on the received schedule; and

responsive to receiving a paging channel notification, determine if a first paging channel notification is addressed to the receiver apparatus.

24. The apparatus of claim 23, wherein the schedule is received via an interface different than the wireless interface.

25. The apparatus of claim 24, wherein the interface different than the wireless interface comprises a transceiver within the apparatus adapted to receive wireless signals according to a protocol different than that associated with the wireless interface.

26. The apparatus of claim 23, wherein the wireless receiver apparatus comprises a mobile cellular smartphone.

27. The apparatus of claim 26, wherein the cellular smartphone comprises a multi-touch screen user interface.

28. The method of claim 23, wherein the configuration of the wireless interface comprises updating an internal schedule identifying one or more times and one or more frequency bands available for discontinuous reception (DRX).

29. The method of claim 23, wherein the schedule comprises:

a first information identifying a carrier frequency on which the paging channel notification is to be transmitted;

a first timing data according to which a paging identifier and a paging message are to be transmitted; and

a second information relating to a bandwidth size of one or more channels on which the receiver apparatus may receive the paging identifier and paging message.

30. A non-transitory computer readable apparatus having a storage medium comprising a plurality of computer-executable instructions that are configured to, when executed by a digital processor:

determine a first paging schedule for legacy client devices on a cellular network;

determine a second paging schedule for enhanced client devices on a cellular network, wherein the first paging schedule and the second paging schedule are based at least in part on a ratio of enhanced devices to legacy devices on the cellular network;

cause transmission of the first and second schedule via a wireless interface associated with a host device on which one or more of the plurality of instructions are executed; and

cause transmission of each paging message via the wireless interface based on an appropriate schedule,

wherein the legacy client devices and enhanced devices are operatively connected to a single radio-access network.