Data transmission method and communication equipment

Abstract

The embodiment of the invention discloses a data transmission method and communication equipment. The method provided by the embodiment of the invention comprises the following steps: the communication equipment acquires dequeue information; wherein the dequeue information indicates a queue requested to be output in the communication equipment and a target data volume output by each queue at a time; The communication device maintains a burst value. the target data volume is managed based on the burst value; wherein the target data volume is not greater than the burst value; the communication equipment reads a sub-packet descriptor PD according to the queue; wherein the sub-PDs are obtained by segmenting a first PD; wherein the sub PD comprises target description information used for indicating a target data packet; wherein the first PD comprises first description information used for indicating a first data packet set; wherein the first data packet set comprises a target data packet, the first data packet set and the sub-PD are stored in a packet cache, the packet cache comprises a dynamic random access memory (DRAM), the first PD is stored in a control cache, the control cache comprises a static random access memory (SRAM), and the communication equipment determines and sends the target data packet according to the sub-PD.

Description

technical field [0001] The present application relates to the communication field, and in particular to a data transmission method and communication equipment. Background technique [0002] In the current data communication system, data packets are stored in the packet cache of the communication device, and the packet cache is usually managed by a packet descriptor (PD, packet descriptor). Each PD manages a packet cache with a certain storage space, for example, a The 8GB packet cache is managed by 1M PDs, then each PD manages a cache space of 8GB / 1M=8KB, and each PD records the description information of the data packets stored in the cache space it manages, such as the packet length, The start and end address of the packet data in the cache space, and the PD pointer that strings the PD into a linked list, etc. [0003] Since a data packet may not use up the buffer space managed by a PD, for example, the size of the data packet is 1KB, and the PD manages a buffer space of ...

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Problems solved by technology

[0004] However, this packetization technology requires that all data packets stored in the buffer space managed by the PD be sent as a whole. For example, a 1KB data packet is sent at a bandwidth of 100Mbps, so the ideal state is that every 1KB*8 / 100Mbps=800us Send a data packet, and using this packetization technology, the 8KB cache space managed by a PD can store 8 1KB data packets, so that 8 data packets are sent every 8*800us=6400us, for the burst tolerance Lower downlink devices cannot receive so many data packets at a time, which will lead to packet loss on downlink devices

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