Wireless frame transmission method in time division-synchronization code division multiple access system

A technology of synchronous code division multiple access and transmission method, which is applied in the field of time division-synchronous code division multiple access, can solve the problems of unfavorable fast call establishment and inapplicability, so as to avoid collision, ensure reliability and effectiveness, shorten The effect of transmission time

CN101179290BInactive Publication Date: 2012-05-23CHINA ACAD OF TELECOMM TECH
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2012-05-23
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for transmitting wireless frames in a time diversion-synchronous code division multiple access system, which includes the following steps: seven service slots with a fixed length and three special slots form 5ms wireless frames for interaction between a user terminal and side signaling; an encoding sequence of transmit format combined indicator (TFCI) is mapped ona TFCI field for burst of the 5ms wireless frames; when an uplink / downlink of transmission bursts, a first data block, a training sequence and a second data block are transmitted in order, and the TFCI encoding sequence is transmitted from at least one side in the two sides of the training sequence. By adopting the invention, the transmission time of the signaling is shortened and fast calling isrealized.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to time division-synchronous code division multiple access (TD-SCDMA) technology, in particular to a transmission method of wireless frames in the TD-SCDMA system. Background technique

[0002] In the TD-SCDMA system, the physical channel adopts a four-layer structure: system frame, wireless frame, subframe and time slot / code. Usually, one radio frame is composed of two subframes, and the length of each subframe is 5ms. In a subframe, there are both uplink time slots (TS) and downlink time slots, including seven fixed-length business time slots, such as figure 1 shown. Among them, TSO must be used in the downlink direction, and TS1 must be used in the uplink direction, that is, TSO is fixed as a downlink time slot, TS1 is fixed as an uplink time slot, and the directions of other time slots are variable. In addition to seven business time slots, each subframe also includes three special time slots: DwPTS, UpPTS and GP, such as ...

Examples

Embodiment Construction

[0025] The basic idea of ​​the present invention is: seven fixed-length service time slots and three special time slots form a 5ms wireless frame to realize the signaling interaction between the user terminal and the network side, and map the TFCI coding sequence into the 5ms wireless frame burst The TFCI field; when transmitting an uplink / downlink burst, the first data block, the training sequence and the second data block are sent in sequence, and the TFCI coded sequence is sent on at least one of the two sides of the training sequence. In this way, the transmission time interval of signaling can be guaranteed to be controlled at 5 ms.

[0026] Here, since the closer the distance to the training sequence is, the more accurate the decoding is, so the TFCI field is generally set on one side or both sides of the training sequence. Therefore, the sending of the TFCI coded sequence on at least one of the two sides of the training sequence may specifically include three steps: way...