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Method and system for transmitting data

A technology of data transmission and data, applied in the field of data transmission technology

Inactive Publication Date: 2011-04-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0033] In the existing NWG_STAGE2 specification, the data flow is transmitted between the ASN-GW and the BS, and the BS discards it when it exceeds the cache threshold, and the business continuity depends on the upper-layer TCP mechanism or application Layer retransmission mechanism is used to ensure that the transmission of data flow is not controlled, so that when BS has no way to receive data, ASN-GW still sends data, resulting in data loss

Method used

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  • Method and system for transmitting data

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Experimental program
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Effect test

Embodiment 1

[0128] In this embodiment, we use the GRE tunnel technology between the BS and the ASN-GW to realize the control of data transmission.

[0129] In the present invention, the GRE frame header format is as shown in Table 1

[0130] 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

[0131] +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- +-+-+-+-+-+-+-+

[0132] |C| Reserved0 |Ver| ProtocolType|

[0133] +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- +-+-+-+-+-+-+-+

[0134] | Checksum(optional) | Reservedl(optional) |

[0135] +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- +-+-+-+-+-+-+-+

[0136] Table 1

[0137] Expand the value of Protocol Type in WiMax system: 88E2H, please refer to RFC1700 for details.

[0138] Define the WiMax extended attributes, and the GRE frame format is as follows:

[0139] 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

[0140] +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- +-+-+-+-+-...

Embodiment 2

[0187] In this embodiment, the BS notifies the ASN-GW to perform flow control by sending a state change message to the ASN-GW instead of sending a reverse GRE packet, such as Figure 10 As shown, the specific implementation steps are as follows:

[0188] Step 1001 to step 1003, the operation process is the same as step 901 to step 903, the BS receives the GRE data packet sent by the ASN-GW, and judges whether the service type of the received GRE data packet needs flow control, if flow control is required, Then it is judged whether the occupancy rate of the buffer zone is greater than a preset overload threshold.

[0189] Here we assume that the received GRE packets need to be flow controlled, and their buffer occupancy rate is greater than the preset overload threshold.

[0190] Step 1004, BS constructs a flow control status update message, and sends it to ASN-GW, instructing ASN-GW to stop sending data flow;

[0191] When the BS detects that flow control is required, it fir...

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Abstract

The invention is concerned with the data transmission method and the system, adds the flow control mechanism in the WiMAX system, and consummates the working flow of the existing WiMAX system. It is: BS estimates whether or not processes flow control for the received data, if it needs to process flow control, BS detects the occupied condition of the buffer zone, adjusts BS and the accessing network gateway condition according to the occupied rate, and controls the send of the data flow. BS sends the buffer marking to the accessing network gateway according to the MS service type or operation characteristic, and the occupied condition of the accessing network gateway.

Description

technical field [0001] The invention belongs to the communication field, in particular to a data transmission technology. Background technique [0002] The full name of WiMAX is Worldwide Interoperability for Microwave Access. The Chinese name is Microwave Access Global Interoperability. This is a set of standardized wireless communication technologies that provide long-distance high-traffic broadband transmission services. In the architecture system of the WiMAX network, its functional entities mainly include MS, ASN and CSN. [0003] The ASN access service network is a set of network functions that provide wireless access for WiMAX users. It mainly includes the following mandatory functions: [0004] - establishing a layer 2 connection between the base station BS and the WiMAX terminal MS; [0005] - In the Proxy Mobile IP (PMIP) mode, transfer the AAA control message to the home NSP (H-NSP) to which the WiMAX user belongs to assist in completing authentication, authori...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04L29/06
Inventor 刘靖
Owner HUAWEI TECH CO LTD
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