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Method for establishing multicast data channel in radio communication system

A wireless communication system and data channel technology, applied in the field of realizing MBS establishing a multicast multicast data channel in a network, can solve the problems of complex implementation and waste of R6 tunnel bandwidth, and achieve the effect of saving bandwidth resources

Inactive Publication Date: 2008-04-02
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the definition of granularity for the establishment of data channels for MBS services is still blank
The MBS service has its own characteristics. All BSs in the MBS Zone need to transmit the same data synchronously. Each BS in an MBS service flow uses the same CID and SA, and its scheduling is processed by the MBS Server, and each BS can belong to multiple MBS Zone, so if you use the existing unicast data channel to establish granularity to establish a multicast data channel, the implementation will be more complicated
For example, for the tunnel granularity of each BS, in the case of unicast, the BS needs to be classified into different unicast connections corresponding to the air interface according to the classifier. If the multicast service is also a multicast tunnel for each BS granularity, then for The data of different MBS Zones need to be classified into different multicast connections of the air interface for processing; for the tunnel granularity of each MS, in the case of multicast services, the air interface multicast connection is not for a certain MS, and multiple MSs completely share one Multicast connection, so in the R6 tunnel, a tunnel is established for each MS granularity to transmit multicast data, and the transmitted data is the same content, which causes the bandwidth waste of the R6 tunnel; The same is true for broadcast tunnels, which will waste the bandwidth of R6 tunnels

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  • Method for establishing multicast data channel in radio communication system
  • Method for establishing multicast data channel in radio communication system
  • Method for establishing multicast data channel in radio communication system

Examples

Experimental program
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Embodiment 1

[0032] As shown in FIG. 5 , it describes the process of establishing a multicast data channel based on MBS Zone or multicast service flow in the WiMAX broadband wireless access system. This embodiment introduces the process of establishing a data channel based on the MBS Zone granularity. During the establishment process, when the MBS Server receives the multicast service application from the terminal or decides to initiate a multicast service channel establishment, the MBS Server sends the multicast service to the ASN-GW or BS under the jurisdiction of the MBS Zone. Send a tunnel establishment request message, and carry the MZID (MBS Zone ID), MBS Content IDs (MBS Content Provider Server ID), SFID (MBS Service Flow ID) and CID (MBS Connection ID), at the same time, in each ASN GW and Only one multicast data channel needs to be established between each subordinate BS for the MBS Zone, and the MZID uniquely identifies a multicast multicast data channel. Later, when a terminal ...

Embodiment 2

[0050] Referring to FIG. 5 , this embodiment mainly describes the scenario and method for establishing a multicast data channel based on the multicast service flow granularity. A multicast service flow generally represents a specific multicast service (with specific QoS attributes, etc.), and it is also possible to establish multiple multicast service flows for a multicast service. For example, video broadcasting, audio and video are two Multicast traffic with different QoS attributes. In addition, for multiple MBS services (MBS Content IDs) with the same QoS and other attributes, the current 802.16e air interface supports binding multiple logical channels (Logical Channel IDs) under one multicast connection. One LogicalChannel ID can correspond to one MBS Content ID. Therefore, only one multicast service flow can be established for such multiple MBS services.

[0051] The process of establishing a multicast data channel based on the granularity of the multicast service flow ...

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Abstract

A method of establishing multicast data channel in wireless communication system is provided. The unit side of data channel is established direct towards to each MBS area or each special multicast traffic flow, (a) MBS server sending data channel to all the access gateways in MBS area to establish request information, carried with MZID, MBS Content ID,SFID and CID; (b) the access gateway sending data channel to all the base stations in MBS area to establish request information, carried with MZID, MBS Content ID,SFID, CID, MBS data channel marker;(c) after receiving the information, the base station returning to data channel to establish response message, carried with MZID, MBS data channel marker; (d) the access gateway receiving the response information from the base stations and establishing data channel with each base station and returning the response information to the MBS server, carried with channel uniqueness mark based on the unit size.

Description

technical field [0001] The invention relates to a WiMAX wireless communication system, in particular to a method for realizing MBS to establish a multicast multicast data channel in the network. Background technique [0002] MBS (Multicast and broadcast services, multicast / broadcast service) is an important function of a wireless communication system defined by the IEEE802.16 protocol. MBS is divided into two situations: single base station access and multi-base station access. The former refers to the multicast / broadcast service in one base station; the latter refers to all terminals registered to the multicast / broadcast service at the network level can receive multicast MAC layer (Medium Access Control layer) data synchronously transmitted by a base station on a downlink multicast connection. The MBS involved in this article is the multicast / broadcast service accessed by multiple base stations. Figure 1 shows a schematic diagram of a terminal receiving MBS data in an 802...

Claims

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Application Information

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IPC IPC(8): H04L12/18H04Q7/22H04L12/58
Inventor 周强娄笃仕
Owner ZTE CORP
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