Methods and devices for parallel page decoding from neighboring cells
Various features and aspects of the present disclosure are adapted to facilitate improved reception of page messages at an access terminal operable in a wireless communication system. When the access terminal is in a region where two or more cells overlap, if the access terminal is moving away from the coverage area of an active cell and moving towards the coverage area of a neighbor cell, the access terminal may miss an incoming page message transmitted from its serving cell. Thus, the access terminal may dedicate fingers of a rake receiver to listen to paging information transmitted from one or more neighbor cells, decoding this information if a page decoding operation corresponding to the active cell fails. Other aspects, embodiments, and features are also claimed and described.
1. A method of wireless communication operable at an access terminal in idle mode, the method comprising:
initiating a parallel page decoding process based on one or more parameters comprising at least one of an active service cell signal quality, a neighboring cell signal quality, a relative value of a neighboring cell signal quality with respect to an active service cell signal quality, channel conditions, a channel estimation, cells overheads, or a number of active pilot paths;
allocating a second finger of a rake receiver in the access terminal to track a neighboring cell while a first finger of the rake receiver in the access terminal is configured to receive paging information from an active cell;
utilizing the second finger, receiving paging information from the neighboring cell in parallel with the receiving of the paging information from the active cell;
attempting to decode paging information, comprising a page message, received from the active cell;
if the access terminal fails to decode the page message from the received paging information from the active cell, decoding a page message from the parallelly received paging information from the neighboring cell; and
if the access terminal determines that the decoded page message from the neighboring cell includes an access terminal directed page, performing an idle handoff to the neighboring cell for processing a mobile terminated call.
2. The method of claim 1 , further comprising performing an idle handoff to the neighboring cell.
3. The method of claim 1 , wherein the neighboring cell is selected from a neighboring cell set based on a signal strength.
4. The method of claim 1 , wherein the second finger is configured to track the neighboring cell in cell fading condition regions based on at least one of:
neighboring cell signal quality, relative value of the neighboring cell signal quality with respect to the active cell signal quality, channel conditions, channel estimation, knowledge of a given number of overheads of the neighboring cell, or a number of active pilot paths.
5. The method of claim 1 , wherein the paging information received from the neighboring cell is stored in a separate symbols buffer.
6. An access terminal configured for wireless communication, comprising:
at least one processing circuit;
a communication interface communicatively coupled to the at least one processing circuit; and
a storage medium communicatively coupled to the at least one processing circuit,
wherein the at least one processing circuit is configured to:
initiate a parallel page decoding process based on one or more parameters comprising at least one of an active service cell signal quality, a neighboring cell signal quality, a relative value of a neighboring cell signal quality with respect to an active service cell signal quality, channel conditions, a channel estimation, cells overheads, or a number of active pilot paths;
allocate a second finger of a rake receiver in the access terminal to track a neighboring cell while a first finger of the rake receiver in the access terminal is configured to receive paging information from an active cell;
utilize the second finger to receive paging information from the neighboring cell in parallel with the receiving of the paging information from the active cell;
attempt to decode paging information, comprising a page message, received from the active cell;
if the access terminal fails to decode the page message from the received paging information from the active cell, decode a page message from the parallelly received paging information from the neighboring cell; and
if the access terminal determines that the decoded page message from the neighboring cell includes an access terminal directed page, perform an idle handoff to the neighboring cell for processing a mobile terminated call.
7. The access terminal of claim 6 , wherein the at least one processing circuit is further configured to perform an idle handoff to the neighboring cell.
8. The access terminal of claim 6 , wherein the at least one processing circuit is further configured to select the neighboring cell from a neighboring cell set based on a signal strength.
9. The access terminal of claim 6 , wherein the at least one processing circuit is further configured to cause the second finger to track the neighboring cell in cell fading condition regions based on at least one of: neighboring cell signal quality, relative value of the neighboring cell signal quality with respect to the active service cell signal quality, channel conditions, channel estimation, knowledge of a given number of overheads of the neighboring cell, or a number of active pilot paths.
10. The access terminal of claim 6 , wherein the at least one processing circuit is further configured to store the paging information received from the neighboring cell in a separate symbols buffer.
11. A non-transitory computer readable storage medium comprising a program which, when executed by a processor, performs an operation, the operation comprising:
initiating a parallel page decoding process based on one or more parameters comprising at least one of an active service cell signal quality, a neighboring cell signal quality, a relative value of a neighboring cell signal quality with respect to an active service cell signal quality, channel conditions, a channel estimation, cells overheads, or a number of active pilot paths;
allocating a second finger of a rake receiver in an access terminal to track a neighboring cell while a first finger of the rake receiver in the access terminal is configured to receive paging information from an active cell;
utilizing the second finger, receiving paging information from the neighboring cell in parallel with the receiving of the paging information from the active cell;
attempting to decode paging information, comprising a page message, received from the active cell;
if the access terminal fails to decode the page message from the received paging information from the active cell, decoding a page message from the parallelly received paging information from the neighboring cell; and
if the access terminal determines that the decoded page message from the neighboring cell includes an access terminal directed page, performing an idle handoff to the neighboring cell for processing a mobile terminated call.
12. The non-transitory computer readable storage medium of claim 11 , wherein the operation further comprises performing an idle handoff to the neighboring cell.
13. The non-transitory computer readable storage medium of claim 11 , wherein the neighboring cell is selected from a neighboring cell set based on a signal strength.
14. The non-transitory computer readable storage medium of claim 11 , wherein the operation further comprises causing the second finger to track the neighboring cell in cell fading condition regions based on at least one of: neighboring cell signal quality, relative value of the neighboring cell signal quality with respect to the active cell signal quality, channel conditions, channel estimation, knowledge of a given number of overheads of the neighboring cell, or a number of active pilot paths.
15. The non-transitory computer readable storage medium of claim 11 , wherein the paging information received from the neighboring cell is stored in a separate symbols buffer.
16. An access terminal configured for wireless communication, comprising:
means for initiating a parallel page decoding process based on one or more parameters comprising at least one of an active service cell signal quality, a neighboring cell signal quality, a relative value of a neighboring cell signal quality with respect to an active service cell signal quality, channel conditions, a channel estimation, cells overheads, or a number of active pilot paths;
means for allocating a second finger of a rake receiver in the access terminal to track a neighboring cell while a first finger of the rake receiver in the access terminal is configured to receive paging information from an active cell;
means for utilizing the second finger to receive paging information from the neighboring cell in parallel with the receiving of the paging information from the active cell;
means for attempting to decode paging information, comprising a page message, received from the active cell;
means for, if the access terminal fails to decode the page message from the received paging information from the active cell, decoding a page message from the parallelly received paging information from the neighbor cell; and
means for, if the access terminal determines that the decoded page message from the neighboring cell includes an access terminal directed page, performing an idle handoff to the neighboring cell for processing a mobile terminated call.
17. The access terminal of claim 16 , further comprising means for performing an idle handoff to the neighboring cell.
18. The access terminal of claim 16 , further comprising means for selecting the neighboring cell from a neighboring cell set based on a signal strength.
19. The access terminal of claim 16 , further comprising means for causing the second finger to track the neighboring cell in cell fading condition regions based on at least one of: neighboring cell signal quality, relative value of the neighboring cell signal quality with respect to the active service cell signal quality, channel conditions, channel estimation, knowledge of a given number of overheads of the neighboring cell, or a number of active pilot paths.
20. The access terminal of claim 16 , further including means for storing the paging information received from the neighboring cell in a separate symbols buffer.