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US 10,542,541 B2Granted
Re-contention-based co-existence on a shared communication medium
AssigneeQUALCOMM Incorporated
InventorsNachiappan Valliappan, Ahmed Kamel Sadek, Peter Gaal, Tamer Adel Kadous, Andrei Dragos Radulescu
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Abstract
Techniques for managing re-contention on a shared communication medium are disclosed. In order to facilitate re-contending for access to the communication medium, an access point may adjust one or more uplink transmission parameters associated with a triggering condition for invoking a contention timer. In addition or as an alternative, the access point may mute transmission on the communication medium during one or more symbol periods designated for transmission. In addition or as an alternative, the access point may configure a timing advance to create a re-contention gap.
Claims30
A communication method, comprising:
- contending for access to a communication medium for a series of subframes associated with a Time Division Duplexing (TDD) frame structure, wherein the contending comprises transmitting a first channel reservation message to reserve the communication medium for the series of subframes;
- transmitting on the communication medium during a first portion of the series of subframes;
- configuring a timing shift of a second portion of the series of subframes by sending a timing shift command to commence communication on the communication medium earlier than scheduled for the second portion of the series of subframes to create a re-contention gap between the second portion of the series of subframes and a third portion of the series of subframes;
- re-contending, during the re-contention gap, for access to the communication medium for the third portion of the series of subframes;
- and
- transmitting on the communication medium during the third portion of the series of subframes.
3 more elements
A communication apparatus, comprising:
- at least one processor;
- at least one memory coupled to the at least one processor, the at least one processor and the at least one memory being configured to contend for access to a communication medium for a series of subframes associated with a Time Division Duplexing (TDD) frame structure, wherein the contending comprises transmitting a first channel reservation message to reserve the communication medium for the series of subframes;
- and
- at least one transceiver configured to transmit on the communication medium during a first portion of the series of subframes,
- wherein the at least one processor and the at least one memory are further configured to configure a timing shift of a second portion of the series of subframes by sending a timing shift command to commence communication on the communication medium earlier than scheduled for the second portion of the series of subframes to create a re-contention gap between the second portion of the series of subframes and a third portion of the series of subframes and re-contend, during the re-contention gap, for access to the communication medium for the third portion of the series of subframes, and
- wherein the at least one transceiver is further configured to transmit on the communication medium during the third portion of the series of subframes.
3 more elements
A communication apparatus, comprising:
- means for contending for access to a communication medium for a series of subframes associated with a Time Division Duplexing (TDD) frame structure, wherein the contending comprises transmitting a first channel reservation message to reserve the communication medium for the series of subframes;
- means for transmitting on the communication medium during a first portion of the series of subframes;
- means for configuring a timing shift of a second portion of the series of subframes by sending a timing shift command to commence communication on the communication medium earlier than scheduled for the second portion of the series of subframes to create a re-contention gap between the second portion of the series of subframes and a third portion of the series of subframes;
- means for re-contending, during the re-contention gap, for access to the communication medium for the third portion of the series of subframes;
- and
- means for transmitting on the communication medium during the third portion of the series of subframes.
3 more elements
A non-transitory computer-readable medium comprising code, which, when executed by a processor, causes the processor to perform operations for communication, the non-transitory computer-readable medium comprising:
- code for contending for access to a communication medium for a series of subframes associated with a Time Division Duplexing (TDD) frame structure, wherein the contending comprises transmitting a first channel reservation message to reserve the communication medium for the series of subframes;
- code for transmitting on the communication medium during a first portion of the series of subframes;
- code for configuring a timing shift of a second portion of the series of subframes by sending a timing shift command to commence communication on the communication medium earlier than scheduled for the second portion of the series of subframes to create a re-contention gap between the second portion of the series of subframes and a third portion of the series of subframes;
- code for re-contending, during the re-contention gap, for access to the communication medium for the third portion of the series of subframes;
- and
- code for transmitting on the communication medium during the third portion of the series of subframes.
3 more elements
Dependencies are inferred from the claim text.