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VoIP bearing method in time division synchronous CDMA access system

A code division multiple access, time division synchronization technology, applied in transmission systems, digital transmission systems, communication between multiple stations, etc. Quality of service and other issues to reduce resource overhead and be compatible with existing protocols

Inactive Publication Date: 2009-04-01
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The packet-oriented HSDPA / HSUPA (High Speed ​​Downlink Packet Access / High Speed ​​Uplink Packet Access) technology can greatly improve the user's transmission rate, but these two technologies have potential transmission interruption, frequent connection termination and reconnection and other unguaranteed QoS (Quality of Service) mechanisms
However, packet services often need to be online for a long time, and the data volume may only be intermittent and bursty

Method used

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  • VoIP bearing method in time division synchronous CDMA access system
  • VoIP bearing method in time division synchronous CDMA access system

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Embodiment Construction

[0020] In the HSDPA technology of the TD-SCDMA system, the newly introduced wireless physical channel resources include: HS-PDSCH (High Speed ​​Physical Downlink Shared Channel), HS-SCCH (Shared Control Channel for HS-DSCH ) and high-speed shared control channel HS-SICH (Shared Information Channel forHS-DSCH). Wherein, the VoIP downlink service can be carried by the HS-PDSCH in the manner of periodic scheduling or aperiodic scheduling. As for the uplink service of VoIP, since it is symmetrical with the downlink service, it can also adopt the periodic non-scheduling mode or the periodic sending mode in the scheduling mode, and the scheduling mode can be used for the uplink retransmission.

[0021] The present invention proposes a method for carrying VoIP in a TD-SCDMA system, including:

[0022] In the CELL_DCH state, the network side allocates HSDPA and HSUPA resources for the UE at the same time, including allocating unscheduled E-PUCH (enhanced uplink physical channel) chan...

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Abstract

The invention provides a method for carrying an internet phone in a time division-synchronous code division multiple access system. The method comprises the following steps: (a) when an internet phone VoIP business is requested at a user terminal, a periodic uplink resource is arranged for the user terminal by a network side, and the user terminal uses the resource to upload new VoIP data; (b) after a base station receives the VoIP data and detects that the VoIP data has errors, non-acknowledge information (NACK) is fed back and authorization is retransmitted to the user terminal to allocate scheduling resources for the user terminal; and (c) after the user terminal receives the NACK information, and the VoIP data is retransmitted on the scheduling resources.

Description

technical field [0001] The invention relates to a synchronous wireless communication system, in particular to a time division synchronous code division multiple access system, that is, a method for carrying VoIP (Internet Telephony) in a TD-SCDMA system. Background technique [0002] Packet-oriented HSDPA / HSUPA (High Speed ​​Downlink Packet Access / High Speed ​​Uplink Packet Access) technology can greatly improve the user's transmission rate, but these two technologies have potential transmission interruption, frequent connection termination and reconnection And other unguaranteed QoS (Quality of Service) mechanisms. However, packet services often need to be online for a long time, and the amount of data may only be intermittent and bursty. Therefore, how to support users to maintain Continuous Packet Connectivity (CPC, Continuous Packet Connectivity) in a wireless communication system is an urgent problem to be solved. Among them, the uplink bearer of VoIP is also a key is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04L1/08H04L12/56H04L1/18
Inventor 刘虎张银成陈慧芮华李萍殷玮玮费佩燕李轶孙慧霞夏中英孙小薇
Owner ZTE CORP
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