Method and apparatus for reducing access latency in a wireless communication system
First Claim
1. A method of accessing a wireless communication system, comprising:
- sending a first command to a first module to perform clock synchronization; and
sending a second command to a second module to receive and process overhead messages from the system, wherein the first module performs the clock synchronization and the second module processes the overhead messages in parallel.
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Abstract
To reduce latency in accessing a wireless communication system, which is highly desirable for time sensitive applications such as push-to-talk call, a wireless device performs an overhead update procedure and a transmit clock synchronization procedure in parallel. The overhead update procedure obtains up-to-date overhead information from the system, such as access parameters used to access the system. The transmit clock synchronization procedure updates transmit timing to current system time, e.g., resets a long or scrambling code and pseudo-random number (PN) sequences used to transmit signaling to the system. After the overhead information has been updated and the transmit clock synchronization procedure has been completed, the wireless device performs an access probe procedure to send signaling (or access probes) to the system to attempt to access the system.
15 Citations
32 Claims
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1. A method of accessing a wireless communication system, comprising:
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sending a first command to a first module to perform clock synchronization; and sending a second command to a second module to receive and process overhead messages from the system, wherein the first module performs the clock synchronization and the second module processes the overhead messages in parallel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus in a wireless communication system, comprising:
a call processing module operative to send a first command to a first module to perform clock synchronization and to send a second command to a second module to receive and process overhead messages from the system, wherein the first module performs the clock synchronization and the second module processes the overhead messages in parallel. - View Dependent Claims (15, 16, 17, 18)
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19. An apparatus in a wireless communication system, comprising:
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means for sending a first command to a first module to perform clock synchronization; and means for sending a second command to a second module to receive and process overhead messages from the system, wherein the first module performs the clock synchronization and the second module processes the overhead messages in parallel. - View Dependent Claims (20, 21, 22)
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23. A processor readable media for storing instructions operable in a wireless device to:
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send a first command to a first module to perform clock synchronization; and send a second command to a second module to receive and process overhead messages from the system, wherein the first module performs the clock synchronization and the second module processes the overhead messages in parallel. - View Dependent Claims (24)
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25. A method of accessing a wireless communication system, comprising:
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receiving a command; performing clock synchronization if instructed by the received command; and sending signaling to access the system if instructed by the received command, and wherein the clock synchronization is performed in parallel with updating of overhead information from the system. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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32. An apparatus in a wireless communication system, comprising:
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a first module operative to perform clock synchronization when instructed; a second module operative to receive and process overhead messages from the system when instructed; and a call processing module operative to send a first command to the first module to perform clock synchronization and to send a second command to the second module to receive and process the overhead messages from the system, wherein the first module performs the clock synchronization and the second module processes overhead messages in parallel.
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Specification