Radio frame transmission method, system , base station and user equipment

A transmission method and technology for user equipment, applied in the field of wireless frame transmission, can solve the problems of low spectrum utilization, waste of resources, etc., and achieve the effect of improving flexibility and improving spectrum utilization.

Inactive Publication Date: 2009-02-11
TD TECH COMM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that since MBMS is a downlink point-to-multipoint multicast service, the figure 1 In the frame structure shown in the figure, for all downlink services such as MBMS that are sensitive

Method used

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  • Radio frame transmission method, system , base station and user equipment
  • Radio frame transmission method, system , base station and user equipment
  • Radio frame transmission method, system , base station and user equipment

Examples

Experimental program
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example 1

[0124] Figure 8 It is a schematic structural diagram of a radio subframe in Example 1. Such as Figure 8 As shown, in the preset wireless subframe in this example, the time slot is still divided into 7 time slots, and all 7 time slots are downlink, without DwPTS and UpPTS channels. Among them, TS0 can be used to transmit signaling information, such as basic common control physical channel (P-CCPCH) or MBMS indicator channel (MICH) or other downlink control channel signaling, and the spare part can also be used to transmit data; the rest of the time The slot is only used to transmit data information, not to transmit signaling.

[0125] The length and usage arrangement of the above-mentioned time slots can be as follows:

[0126] The length of TS0 is 160, which is used to transmit signaling information; the length of TS1~TS6 is 1040, which is used to transmit data information.

[0127] Wherein, TS1, TS3 and TS5 are provided with a training sequence, which may be a preamble ...

example 2

[0135] In each subframe, smaller time slots are divided, and each time slot can bear a basic service, so as to minimize the interference between various services and simplify the algorithm at the UE side. Take the MBMS service as an example. At the current stage, the basic MBMS service is a 64K service, so you can design Figure 10 The slot structure shown. Figure 10 A total of 16 time slots are divided, among which, TS0 has a length of 256 chips and is used to transmit signaling information, and each of the remaining time slots has a length of 384 chips and is used to transmit data information. Whether to set a training sequence in each time slot can be determined according to the situation in these time slots. For example, training sequences can be used only in TS3, TS9, TS15, etc.

[0136] Subsequent operations such as time slot allocation and UE's analysis of the received subframes are similar to those in Example 1, and will not be repeated here.

example 3

[0138] Based on the time slot structure in the prior art, after all the time slots are set as downlink, variable intermediate codes and variable GP lengths can also be used to improve the efficiency of the system. For example, in an urban environment, use GP as 16. In the suburban environment, use GP as 32. In an urban environment, in a subframe, midambles can be used in 3 time slots (or even less), for example, TS0, TS2, and TS4 respectively; in a suburban environment, the channel changes quickly, and can be used in each The midamble etc. are used in each time slot. The length of the GP and whether there is a midamble in each time slot can be broadcast to the UE by signaling. The length of the intermediate code can also be shortened, for example, it can be reduced to 64 chips.

[0139] In addition, after changing the UpPTS time slot to a downlink time slot, the corresponding time slot can be used to transmit the data field, and the GP is set at the end of the time slot. At...

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Abstract

The invention discloses a transmission method of a wireless frame, which comprises prearranged K which is more than or equal to a wireless sub frame and (i)th which is more than or equal to 1 and is less than or equal to K in the K wireless sub frames. Total downlink Ni gaps are prearranged in the i wireless sub frames; Mi training sequences are prearranged in the Ni gaps according to the interval of the gaps prearranged, and Mi is less than or equal to Ni; the wireless sub frames which carry out service transmission currently are determined from the K wireless sub-frames; and total downlink service transmission is conducted by utilizing the wireless sub-frames determined. In addition, the invention further discloses a wireless frame transmission system, a base station and a subscriber device. The invention adopts the technical proposal that the availability of frequency spectrum can be improved, thereby reducing the waste of resources.

Description

technical field [0001] The present invention relates to communication technology, in particular to a wireless frame transmission method, system, base station and user equipment for improving frequency spectrum utilization in a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system. Background technique [0002] In order to effectively utilize mobile network resources, the Third Generation Partnership Organization (3GPP) proposed Multicast and Broadcast Service (MBMS), which realizes point-to-multipoint multicast service. Compared with the previous point-to-point unicast mode, the target transmits datagrams, which can save bandwidth and realize network resource sharing. The MBMS defined by 3GPP can not only realize plain text low-rate message multicast and broadcast, but also realize high-rate multimedia service multicast and broadcast. [0003] figure 1 It is a schematic diagram of the wireless subframe structure of the TD-SCDMA system in the prior art. ...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04Q7/30H04Q7/32
Inventor李克薛强王健康拉盖施李向宁王浩然
OwnerTD TECH COMM TECH LTD