Coding method of flow indicator diagram and beacon frames

Abstract

The invention provides a coding method of a flow indicator diagram and beacon frames and relates to the field of communication. The coding method of the flow indicator diagram and the beacon frames enable users to know whether data are stored in access points or not, or enable user terminals to know whether to access channels or not, and enables number of bytes occupied by the flow indicator diagram in the beacon frames to be reduced. The coding method of the flow indicator diagram includes the steps: controlling segmentation bitmap display fields in a sub-bitmap to display or not through at least one bit in flag bitmap control fields, wherein a segmentation sub-bitmap in the sub-bitmap is used for enabling the user terminals to know whether the data are stored in the access points or not, or enabling the user terminals to know whether to access the channels or not.

Description

technical field [0001] The invention relates to the communication field, in particular to a coding method of a traffic indication graph and a beacon frame. Background technique [0002] In WLAN (Wireless Local Area Networks, wireless local area network), after the user terminal enters the coverage of the AP (Access Point, access point), the access point sends a specific association identifier to the user terminal, and will A beacon frame will be broadcast, and each beacon frame includes a TIM (Traffic Indication Map, traffic indication map), and the bitmap in the TIM can indicate whether the access point has cached data that needs to be transmitted to the user terminal. After receiving the beacon frame, the user terminal can read the TIM in the beacon frame through a specific associated identifier to know whether there is data cached in the access point. If it knows that there is data cached in the access point, it can Waiting to receive data sent by the access point, if th...

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Problems solved by technology

[0003] However, for the prior art, the inventors found that if the number of user terminals with cached data in the access point is close to the number of user terminals without cached data, the time for the access point to generate the TIM in the beacon frame will still be very short. Long, that is, the number of bytes occupied by the TIM is still large, and it takes a lot of time to transmit the beacon frame

Moreover, the association identifiers of user terminals are arranged in a certain order. If the association identifiers of multiple user terminals are far apart, the time for the access point to generate the TIM in the beacon frame will be very long, that is, the TIM occupies The number of bytes is large, and it takes a lot of time to transmit the beacon frame

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