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US 9,072,079 B2Granted
Method for controlling channel access, access point and user equipment
AssigneeChina Mobile Communications Corporation
InventorHaiyun Luo
Life of this patent
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Abstract
The present invention discloses a method for controlling a channel access, an access point and a user equipment. The method comprises: determining a next device for accessing a channel according to a predefined rule; when the next device for accessing the channel is a traditionally active status device, scheduling the traditional active status device to occupy the channel once the channel is free; when the next device for accessing the channel is a newly active status device, determining a next traditionally active device for accessing the channel according to the predefined rule, and scheduling all newly active status devices and the next traditionally active status device to contend for accessing the channel once the channel is free.
Claims17
A method for controlling a channel access, comprising:
- determining a next device for accessing a channel according to a predefined rule;
- when the determined next device for accessing the channel is a traditionally active status device, scheduling the traditional active status device to occupy the channel once the channel is free, wherein the scheduling of the traditional active status device comprises broadcasting a DATA frame or an ACK frame transmitted by an access point on the channel to all devices in a network, wherein, the DATA frame or the ACK frame carries a NEXT ADDRESS field for identifying a next traditionally active status device for accessing the channel and a CONTEND PRIORITY field for identifying whether the device participates in contending for accessing the channel;
- when the determined next device for accessing the channel is a newly active status device, determining a next traditionally active status device for accessing the channel according to the predefined rule, and scheduling all newly active status devices and the next traditionally active status device to contend for accessing the channel once the channel is free, wherein the scheduling of all newly active status devices and the next traditionally active status device comprises broadcasting a DATA frame or an ACK frame transmitted by an access point on the channel to all devices in a network, wherein, the DATA frame or the ACK frame carries a NEXT ADDRESS field for identifying the next traditionally active status device for accessing the channel and a CONTEND PRIORITY field for identifying whether the device participates in contending for accessing the channel;
- wherein, a traditionally active status device is an access point having a downlink data packet to be transmitted or a user equipment having an uplink packet burst to be transmitted in which at least a number N of data packets have been uplink transmitted and at least one data packet has not been uplink transmitted, wherein a newly active status device is a user equipment having an uplink packet burst to be transmitted in which not all of a first number N of data packets have been uplink transmitted, and wherein N is a positive integer.
1 more element
An access point, comprising:
- a determining device configured for determining a next device for accessing a channel according to a predefined rule;
- and
- a scheduling device configured, when the next device for accessing the channel determined by the determining device is a traditionally active status device, for scheduling the traditional active status device to occupy the channel once the channel is free;
- and when the next device for accessing the channel determined by the determining device is a newly active status device, for triggering the determining device to determine a next traditionally active status device for accessing the channel according to the predefined rule and scheduling all newly active status devices and the next traditionally active status device for accessing the channel determined by the determining device to contend for accessing the channel once the channel is free;
- wherein the scheduling device is further configured, when a newly active status device contends successfully, for:
- scheduling the next traditionally active status device for accessing the channel to occupy the channel once the newly active status device transmits a data packet on the channel and then frees the channel;
- and when the next traditionally active status device for accessing the channel contends successfully, for triggering the determining device to determine a next device for accessing the channel according to the predefined rule,
- wherein the scheduling device comprises a broadcasting unit, and the broadcasting unit is configured for broadcasting a DATA frame or an ACK frame on the channel to all devices in a network, and wherein, the DATA frame or the ACK frame carries a NEXT ADDRESS field for identifying a next traditionally active status device for accessing the channel and a CONTEND PRIORITY field for identifying whether the device participates in contending for accessing the channel, wherein the broadcasting unit is implemented by one or more processors, and wherein the one or more processors are coupled to a memory;
- and
- wherein, a traditionally active status device is an access point having a downlink data packet to be transmitted or a user equipment having an uplink packet burst to be transmitted in which at least a number N of data packets have been uplink transmitted and at least one data packet has not been uplink transmitted;
- a newly active status device is a user equipment having an uplink packet burst to be transmitted in which not all of a first number N of data packets have been uplink transmitted;
- and wherein, N is a positive integer.
9 more elements
A user equipment, comprising:
- a determining device configured for determining the user equipment as a traditionally active status device having an uplink packet burst to be transmitted in which at least a number N of data packets have been uplink transmitted and at least one data packet has not been uplink transmitted;
- or as a newly active status device having an uplink packet burst to be transmitted in which not all of a first number N of data packets have been uplink transmitted;
- wherein, N is a positive integer;
- and
- a receiving device configured for receiving a DATA frame or an ACK frame transmitted by an access point on a channel, wherein, the DATA frame or the ACK frame carries a NEXT ADDRESS field for identifying a next traditionally active status device for accessing the channel and a CONTEND PRIORITY field for identifying whether the next traditionally active status device participates in contending for accessing the channel.
2 more elements
Dependencies are inferred from the claim text.