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A traffic control method

A flow control and flow technology, applied in the communication field, can solve the problem that the flow control mechanism of the LTE system cannot meet the requirements, and achieve the effect of optimizing network handover and high-level retransmission, and improving the transmission effect.

Inactive Publication Date: 2007-07-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0065] The present invention provides a flow control method to solve the problem that the flow control mechanism in the LTE system cannot meet the requirements

Method used

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  • A traffic control method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] As shown in FIG. 9 , it is a schematic flow chart of Embodiment 1 of the present invention. Embodiment 1 is applied to the ARQ mechanism of the long-term evolution network, and the receiving end performs related control. It can be seen from the figure that Embodiment 1 mainly includes the following steps:

[0149] S11. The sending end sends data to the receiving end;

[0150] S12. The receiving end detects the transmission error rate, and when it exceeds a set first threshold, sends a flow control instruction to the peer entity;

[0151] The receiver detects the error transmission rate and compares it with the set threshold. When the error transmission rate is higher than the set threshold, it starts flow control and sends a flow control instruction to the peer entity.

[0152] The setting of the error transmission rate threshold in step S12 can adopt the following scheme:

[0153] The proportion of PDUs not received correctly in the receiving buffer reaches a certain ...

Embodiment 2

[0174] As shown in FIG. 10 , it is a schematic flow chart of Embodiment 2 of the present invention. Embodiment 2 is applied to the ARQ mechanism of the Long Term Evolution network, and related control is performed by the sending end. It can be seen from the figure that Embodiment 2 mainly includes the following steps:

[0175] S21. The sending end sends data to the receiving end;

[0176] S22. The sending end detects the transmission error rate, and performs flow control when it exceeds a set second threshold.

[0177] When the sender detects that the transmission error rate is higher than the set second threshold, flow control is performed. The setting of the second threshold refers to the following:

[0178] The number of PDUs in the retransmission buffer is higher than a certain limit;

[0179] or / and the PDUs in the transmit buffer are above a certain limit;

[0180] Or / and the frequency of receiving status reports is above a certain limit.

[0181] The content of the f...

Embodiment 3

[0187] As shown in Figure 11, it is a schematic flow chart of Embodiment 3 of the present invention. Embodiment 3 is applied to the hard handover process of the long-term evolution network. There is no interface between the SNB and the TNB, and the data is forwarded through the GW. It can be seen from the figure that the embodiment 3 mainly includes the following steps:

[0188] S31. After receiving the handover instruction, the SNB performs traffic negotiation with the GW;

[0189] After receiving the GW (TNB) switching instruction, the SNB needs to forward the data in the transmission buffer (and the data in the retransmission buffer, if it is an ARQ service) from the GW to the TNB buffer for transmission.

[0190] Before sending data, SNB needs to conduct flow negotiation with GW. This data volume report can be carried in the transmission context message sent by SNB to TNB, or through other control messages.

[0191] In the traffic negotiation, the SNB reports data volume ...

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Abstract

This invention relates to communication field and to one flow control method applied in long derisive network ARQ mechanism, which comprises the following steps: send end sending data to receive end; receive end testing transmission error rate; when it supers set first valve value sending flow control indication to counter part; the send end controls flow on indication. This invention can control flow of some new mechanism on needs to aid them for better transmission effect and to optimize network switch and high layer repeat.

Description

technical field [0001] The invention relates to the communication field, in particular to a flow control method in a long-term evolution network. Background technique [0002] UMTS Universal Mobile Telecommunication Systems (UMTS Universal Mobile Telecommunication Systems) is a third-generation mobile communication system that uses the air interface of WCDMA Wide-band Code Division Multiple Access (WCDMA Wide-band Code Division Multiple Access). The UMTS system is also usually referred to as the WCDMA communication system. [0003] Functionally, the network unit can be divided into a radio access network (RAN Radio Access Network) and a core network (CN Core Network). Among them, the wireless access network is used to handle all wireless-related functions, while the CN handles the switching and routing of all voice calls and data connections in the UMTS system and external networks. Its system structure is shown in Figure 1. [0004] The network units of the UMTS system in...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/18
Inventor 郑潇潇
Owner HUAWEI TECH CO LTD
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