Serial tandem connection bus up flow control method and node equipment

A technology of serial cascading and node devices, which is applied in the direction of bus network, data exchange through path configuration, digital transmission system, etc., and can solve problems such as traffic burst, packet loss, and large traffic

Active Publication Date: 2007-02-28
HUAWEI TECH CO LTD
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Problems solved by technology

This method requires the remote radio unit (Remote Radio Unit, "RRU" for short) of each level of RE to perform precise flow control. However, there may be abnormal processing or traffic bursts during the transmission process of each level of RE. , it is impossible to achieve precise control at each level of RE, so that during the process of data upload, due to the superposition of traffic, the traffic of the uppermost level of RE will be greater than the total physical bandwidth, resulting in packet loss

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  • Serial tandem connection bus up flow control method and node equipment
  • Serial tandem connection bus up flow control method and node equipment
  • Serial tandem connection bus up flow control method and node equipment

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Embodiment Construction

[0058] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0059] The core of the present invention is that each serial node determines the basic bandwidth of the node according to the total bandwidth of the serial cascade bus and the total number of cascaded nodes, and calculates the difference between the basic bandwidth of each lower node and the node according to the position of the node. And, get the sending upper limit of this node. The basic bandwidth and sending upper limit of each node change according to the number of cascaded nodes. When the number of nodes on the serial cascade bus decreases, the basic bandwidth and sending upper limit of all levels of nodes will increase, and the number of cascaded nodes will increase. At the same time, the basic bandwidth and sending upper limit of each node will also decre...

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Abstract

The invention relates to a serial cascade ascending flow control method and relative node device, which can self-adaptive adjust the bandwidth of node when the serial cascade ascending node number changes. Wherein, each node based on the total bandwidth of serial cascade bus and the total node number of cascade connection fixes the basic bandwidth of local node, and based on the node position calculates the sum of basic bandwidths of next node and local node, to obtain the upper sending limit of local node; then the node of each cascade buffers the data of next node, to send the bandwidth not higher than upper sending limit, to send buffered data and the sent data of said node to the superior node; and each node based on the basic bandwidth fixes the data amount applied in said node, to control the data amount uploaded by each node.

Description

Technical field [0001] The present invention relates to the field of communication, in particular to the flow control technology of a serial cascade bus. Background technique [0002] In various communication systems, cascaded networking is a very common networking method. In a cascaded network, it can include a master node (Master Node, "MN") and multiple slave nodes (Slave Node, "SN"), and these nodes are connected by connecting links to form a star. , Chain, ring or tree and other topological types of networks. [0003] In a cascaded network, each node will contain at least one sending port and at least one receiving port. Adjacent nodes are connected by links between ports. Generally, the direction from the master node to the slave node is defined as the downstream direction. The node direction is the upstream direction. [0004] The master node is also called the root node, the last slave node in the downstream direction is also called the leaf node, and the neighboring node...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/40H04L47/30
Inventor 周军
Owner HUAWEI TECH CO LTD
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