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An information indication method, receiving method and device

A technology of information indication and indication, applied in the field of communication, to achieve the effect of saving frame header overhead and interval time, simplifying overhead, and improving data rate and throughput

Active Publication Date: 2020-12-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To further reduce the overhead, as in Figure 5b As shown, the M-BA frame and the trigger frame are aggregated, but even if the aggregation mechanism is adopted to reduce some overhead of the physical layer preamble, it still cannot solve the problem of high overhead

Method used

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  • An information indication method, receiving method and device
  • An information indication method, receiving method and device
  • An information indication method, receiving method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] This embodiment is aimed at optimizing the reply mode of the acknowledgment frame for downlink multi-user transmission. Specifically, the reply mode of the acknowledgment frame is optimized by sharing a resource unit (Resource Unit, RU), which can also be called a resource block, by multiple sites, so as to reduce resource overhead.

[0067] Such as Figure 10 As shown, this embodiment provides an information indication method, which includes the following steps:

[0068] Step 101: The access point sends a data frame to at least one station, and the data frame is a non-aggregated frame or an aggregated frame aggregated by N MAC frames, wherein N is a positive integer greater than 1, and N is less than or equal to M , M is a positive integer, and M represents the maximum number of aggregated MAC frames allowed.

[0069] Wherein, the non-aggregated frame refers to an A-MPDU (Aggregated MPDU, Aggregated MAC Protocol Data Unit) consisting of only one MAC frame, rather tha...

Embodiment 2

[0090] This embodiment optimizes the reply mode of the confirmation frame for uplink multi-user transmission, especially for the method of aggregating the M-BA and the trigger frame introduced in the background technology. For the data itself with only tens of bytes, the overhead is still very high. Problem, the solution provided by this embodiment is: embed the confirmation information or confirmation frame in the trigger frame, that is, broadcast the compressed confirmation information as a field of the trigger frame to multiple stations that need to receive the confirmation frame.

[0091] Same as Embodiment 1, it is agreed that the data frame is a non-aggregated frame or the number of aggregated frames whose number does not exceed M, and M is a smaller value, such as 2, 3, 4, so if there are N stations that need to receive confirmation information, only M*N bits are needed to carry the confirmation information / confirmation frames of the N stations. For example, each statio...

Embodiment 3

[0097] This embodiment further optimizes the acknowledgment frame reply mode of the uplink multi-user data transmission on the basis of the second embodiment. In order to further save the cost, this embodiment uses the acknowledgment bitmap as the acknowledgment of a field of HE-SIG-B frame to reply.

[0098] Specifically, the method includes: first, the access point sends a trigger frame to at least one station. After the stations, such as stations 1 to 4, receive the trigger frame sent by the access point, they send uplink multi-user data to the access point, and the access point receives the data and uses the confirmation bitmap as the HE-SIG-B Reply to the corresponding station in the form of an acknowledgment frame of one field. refer to Figure 19 , shows a schematic structural diagram of the HE-SIG-B that takes the confirmation bitmap as a field.

[0099] Generally, the frame interaction diagram flow chart does not include the physical layer preamble, and in this emb...

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Abstract

The present disclosure relates to an information indicating method, receiving method and device, wherein the information indicating method includes: an access point sends a data frame to at least one station, and the data frame is a non-aggregated frame or aggregated from N MAC frames Aggregation frames, where N is a positive integer greater than 1, and N is less than or equal to M, and M is the maximum number of aggregated MAC frames allowed; the access point sends trigger information to at least one station, and the trigger information is used to indicate at least A station replies with an acknowledgment frame on the shared resource unit; the access point receives the acknowledgment frame fed back by at least one station on the shared resource unit. This method simplifies the way of uplink and downlink data acknowledgment frame reply, completes the simple acknowledgment reply process by flexibly using the reserved fields of the frame in the standard or adding the negotiation process, cancels the redundant and complicated special reply process, and saves the frame header overhead and interval time, increasing data rate and throughput.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an information indicating method, receiving method and device. Background technique [0002] For WiFi standards, especially for high-speed application scenarios, the supported rate can reach more than 1Gbps, while for sensors, meter reading and other devices, the rate requirements are not high, usually only tens of kbps. In addition, for this type of business, the amount of data will not be very large. Generally, some meter reading data is uploaded. Usually, a data packet is only dozens of bytes. Such a station (Station, STA) that does not require a high rate and does not have a large amount of data is called an IoT (Internet of Things, Internet of Things) STA. [0003] Such as figure 1 It shows a schematic diagram of an AP (Access Point, access point) interacting with multiple STAs. During the interaction, WiFi transmits data through the wireless air interface, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
CPCH04L1/18H04L1/1858H04W80/02H04W4/70H04L5/0055H04L5/0039H04L5/0091H04J13/0022H04J13/0048H04J13/0062H04L1/1614H04L1/1671H04L1/0004H04W72/0446
Inventor 吴伟民文星雨于健
Owner HUAWEI TECH CO LTD