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Adaptive flow control method of forward access transmission channel

A technology of transmission channel and flow control, which is applied in the direction of transmission system, wireless communication, multiplex communication, etc. It can solve the problems of imperfect FACH flow control, etc., and achieve the effect of ensuring integrity and improving communication quality

Inactive Publication Date: 2006-07-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The patent (patent No. 20020061026) of InterDigital Technology Corporation of the United States describes a method for controlling the flow of FACH. Its idea is mainly to queue the packet data packets transmitted by FACH and to consider two aspects of data rerouting, but It is not perfect to control the flow of FACH by only considering the two aspects of queuing and rerouting data, because flow control mainly achieves the purpose of controlling flow by reasonably allocating user data flow, so how to control the applied user data flow It is very important to optimize the allocation, but the above-mentioned patents do not consider this aspect

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  • Adaptive flow control method of forward access transmission channel
  • Adaptive flow control method of forward access transmission channel
  • Adaptive flow control method of forward access transmission channel

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Embodiment Construction

[0029] The implementation steps of the present invention are further described in detail below in conjunction with the accompanying drawings:

[0030] The FACH adaptive flow control method of the present invention is based on the signaling interaction between MAC-c / sh and MAC-d provided by the 3GPP (2001.3) protocol and the flow monitoring of the buffer area by MAC-c / sh of. The basic concept is as follows,

[0031]Common logical channel buffer area: this buffer area stores the data SDU (ServiceData Unit: service data unit) of the common logical channel;

[0032] Receive buffer: this buffer stores the data sent from MAC-d;

[0033] For the location of common logical channel buffer and receiving buffer, please refer to the attached figure 1 The reason why the public logical channel buffer area and the receiving buffer area are considered separately when counting traffic is because the amount of data in the public logical channel is not available in the next scheduling cycle (...

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Abstract

The invention provides a kind of self adaptation flow control method in front access channel, it determines the jam threshold and the distributable threshold of media access control reality in the public channel and the share channel; and measures the volume of buffer area of the media access control reality, acquires the occupied state of the dispatching period buffer through calculating the average buffer occupied rate and the change state in the logic channel buffer; and calculates the whole volume of the media access control reality which can be distributed to special channel; determines the weight correspondent to the priority according to the whole volume, then calculates the data quantity of media access control reality distributable to the special channel according to the whole volume, the data quantity applied by the media access control reality and the priority weight, and the weight which doesn't distributed with times.

Description

technical field [0001] The invention relates to a flow control method of a medium access layer in a communication system, in particular to an adaptive flow control method of a forward access transmission channel (Forward Access Channel-FACH). Background technique [0002] In the WCDMA system, the protocol stack of the wireless interface (Uu port) includes a radio resource controller (RadioResource Control-RRC), a packet data convergence protocol layer ((Packet Data ConvergenceProtocol-PDCP), a radio link controller (Radio Link Control-RLC) ), media access control (Media Access Control-MAC), and physical layer; for the MAC layer of the terrestrial radio access network (Universal Terrestrial Radio Access Network-UTRAN) side, it has such characteristics that it includes three protocol entities: broadcast channel The medium access control entity (MAC-b), the medium access control entity (MAC-c / sh) of the common channel and the shared channel and the medium access control entity ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J13/00H04Q7/20H04L29/02H04W72/12H04W74/04
Inventor 柯雅珠窦建武朱伏生
Owner ZTE CORP