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US 2018/0123727 A1Published application
Wlan link adaptation method and network device
AssigneeHuawei Technologies Co., Ltd.
InventorsJian YU, Xun Yang
Life of this patent
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Abstract
A WLAN link adaptation method and a network device are provided, and can provide accurate link adaptation for each user in an OFDMA communications system. Embodiments of the present application include: obtaining, by a first network device, a target channel information measurement result, where the target channel information measurement result is a measurement result obtained by measuring channel information over target bandwidth; and determining, by the first network device, a modulation and coding scheme MCS of a link according to the target channel information measurement result.
Claims32
A wireless local area network (WLAN) link adaptation method, comprising:
- obtaining, by a first network device, a target channel information measurement result, wherein the target channel information measurement result is a measurement result obtained by measuring channel information over target bandwidth;
- and
- determining, by the first network device, a modulation and coding scheme (MCS) of a link according to the target channel information measurement result.
A WLAN link adaptation method, comprising:
- receiving, by a second network device, a first PPDU sent by a first network device, wherein the first PPDU indicates that the second network device needs to send a channel information measurement result, and the first PPDU further comprises a measurement bandwidth indication field, wherein the measurement bandwidth indication field is used to instruct the second network device to measure channel information over target bandwidth;
- measuring, by the second network device, the channel information over the target bandwidth by using the first PPDU, to obtain a channel information measurement result;
- and
- sending, by the second network device, a second PPDU comprising the channel information measurement result to the first network device, wherein the second PPDU is used by the first network device to determine an MCS of a link according to the channel information measurement result indicated by the second PPDU.
1 more element
A WLAN link adaptation method, comprising:
- generating, by a second network device, a PPDU, wherein the PPDU indicates that the second network device unsolicitedly sends a channel information measurement result, and the PPDU comprises the channel information measurement result, and a measurement bandwidth indication field, wherein the measurement bandwidth indication field is used to indicate a bandwidth over which the channel information measurement result is measured;
- and
- sending, by the second network device, the PPDU to a first network device.
A network device, comprising:
- a computer-readable storage medium, wherein the computer-readable storage medium includes several instructions for instructing the network device to perform the steps below:
- obtaining a target channel information measurement result, wherein the target channel information measurement result is a measurement result obtained by measuring channel information over target bandwidth;
- and
- determining a modulation and coding scheme MCS of a link according to the target channel information measurement result.
1 more element
A network device, comprising:
- a computer-readable storage medium, wherein the computer-readable storage medium includes several instructions for instructing the network device to perform the steps below:
- receiving a first PPDU sent by a target network device, wherein the first PPDU indicates that the network device needs to send a channel information measurement result, and the first PPDU further comprises a measurement bandwidth indication field, wherein the measurement bandwidth indication field is used to instruct the network device to measure channel information over target bandwidth;
- measuring the channel information over the target bandwidth by using the first PPDU, to obtain a channel information measurement result;
- and
- sending, to the target network device, a second PPDU comprising the channel information measurement result, wherein the second PPDU is used by the target network device to determine an MCS of a link according to the channel information measurement result indicated by the second PPDU.
2 more elements
A network device, comprising:
- a computer-readable storage medium, wherein the computer-readable storage medium includes several instructions for instructing the network device to perform the steps below:
- generating a PPDU, wherein the PPDU indicates that the network device unsolicitedly sends a channel information measurement result, and the PPDU comprises the channel information measurement result, and a measurement bandwidth indication field, wherein the measurement bandwidth indication field is used to indicate a bandwidth over which the channel information measurement result is measured;
- and
- sending the PPDU to a target network device.
1 more element
Dependencies are inferred from the claim text.