Method and apparatus for reducing access latency in a wireless communication system
First Claim
1. A method of accessing a wireless communication system, comprising:
- determining to transmit at least one message associated with a delay-sensitive communication session to an access network of the wireless communication system;
sending a first command to a first module to perform a transmit clock synchronization procedure to synchronize a transmit clock; and
sending a second command to a second module to receive and process one or more overhead messages from the access network, wherein the first module performs the transmit clock synchronization procedure and the second module processes the one or more overhead messages in parallel instead of sequentially in response to the at least one message to be transmitted being delay-sensitive.
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Accused Products
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.
7 Citations
35 Claims
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1. A method of accessing a wireless communication system, comprising:
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determining to transmit at least one message associated with a delay-sensitive communication session to an access network of the wireless communication system; sending a first command to a first module to perform a transmit clock synchronization procedure to synchronize a transmit clock; and sending a second command to a second module to receive and process one or more overhead messages from the access network, wherein the first module performs the transmit clock synchronization procedure and the second module processes the one or more overhead messages in parallel instead of sequentially in response to the at least one message to be transmitted being delay-sensitive. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus in a wireless communication system, comprising:
a call processing module operative to determine to transmit at least one message associated with a delay-sensitive communication session to an access network of the wireless communication system, to send a first command to a first module to perform a transmit clock synchronization procedure to synchronize a transmit clock, and to send a second command to a second command to a second module to receive and process one or more overhead messages from the access network, wherein the first module performs the transmit clock synchronization procedure and the second module processes the one or more overhead messages in parallel instead of sequentially in response to the at least one message to be transmitted being delay-sensitive. - View Dependent Claims (18, 19, 20, 21)
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22. An apparatus in a wireless communication system, comprising:
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means for determining to transmit at least one message associated with a delay-sensitive communication session to an access network of the wireless communication system; means for sending a first command to a first module to perform a transmit clock synchronization procedure to synchronize a transmit clock; and means for sending a second command to a second module to receive and process one or more overhead messages from the access network, wherein the first module performs the transmit clock synchronization procedure and the second module processes the one or more overhead messages in parallel instead of sequentially in response to the at least one message to be transmitted being delay-sensitive. - View Dependent Claims (23, 24, 25)
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26. A non-transitory computer readable media for storing instructions operable in a wireless device to:
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determine to transmit at least one message associated with a delay-sensitive communication session to an access network of a wireless communication system; send a first command to a first module to perform a transmit clock synchronization procedure to synchronize a transmit clock; and send a second command to a second module to receive and process one or more overhead messages from the access network, wherein the first module performs the transmit clock synchronization procedure and the second module processes the one or more overhead messages in parallel instead of sequentially in response to the at least one message to be transmitted being delay-sensitive. - View Dependent Claims (27)
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28. A method of accessing a wireless communication system, comprising:
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receiving a command perform a transmit clock synchronization procedure in order to synchronize a transmit clock for transmission of at least one message associated with a delay-sensitive communication session to an access network of the wireless communication system; performing the transmit clock synchronization procedure in response to the received command in parallel with updating of overhead information from the access network based on the at least one message being associated with the delay-sensitive communication session; and sending the at least one message to the access network upon completion of the transmit clock synchronization procedure and the updating of the overhead information. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. An apparatus in a wireless communication system, comprising:
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a first module operative to perform a transmit clock synchronization procedure to synchronize a transmit clock a second module operative to receive and process one or more overhead messages from an access network of the wireless communication system; and a call processing module operative to determine to transmit at least one message associated with a delay-sensitive communication session to the access network, to send a first command to the first module to perform the transmit clock synchronization procedure, and to send a second command to the second module to receive and process the one or more overhead messages from the access network, wherein the first module performs the transmit clock synchronization procedure and the second module processes the one or more overhead messages in parallel instead of sequentially in response to the at least one message to be transmitted being delay-sensitive.
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Specification