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System and method for implementing relay transmission

A technology for transmitting signals and sending signals, which is applied in transmission systems, radio relay systems, radio transmission systems, etc., and can solve problems such as large relay transmission time delays and achieve the effect of reducing time delays

Active Publication Date: 2012-10-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0030] It can be seen that in the prior art, in the TD-SCDMA system and the 3G next-generation evolution system co-existing with the TD-SCDMA system adjacent frequency co-site, the time delay for relay transmission is relatively large

Method used

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  • System and method for implementing relay transmission
  • System and method for implementing relay transmission
  • System and method for implementing relay transmission

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Embodiment Construction

[0062] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0063] Figure 5 It is a schematic flow chart of the first preferred embodiment of the method for implementing relay transmission according to the embodiment of the present invention. Such as Figure 5 shown, including the following steps:

[0064] First of all, it needs to be pointed out that DL includes: downlink relay time slot and downlink access time slot, and UL includes: uplink relay time slot and uplink access time slot. m1 is the number of downlink relay time slots, n1 is the number of uplink relay time slots, m-m1 is the number of downlink access time slots, and n-n1 is the number of uplink access time slots.

[0065] Step 510: In the m-m1 downlink access slots, the BS sends signals to the MS, or is idle, m1

[0066] In this step, in the m-m1 down...

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Abstract

The invention provides a method for realizing relay transmission. The method comprises the steps that when a (2k)th hopping and a (2k plus 1)th hopping are determined to be not the last hopping, in m1 DLs in a sub-frame, the operations of a (2k)th relay station (RS) and a (2k plus 1)th RS are executed synchronously and signals are sent to the (2k plus 1)th RS; and in n1 ULs, the operations of the(2k plus 1)th RS and a (2k plus 2)th RS are executed synchronously and signals are sent to the (2k plus 2)th RS. Thereby, the transmission with two times of hopping in one sub-frame is realized. Onlythe time delay of N / 2 TD-SCDMA sub-frames is required to realize N-time hopping of the relay transmission if the N is an even number; only the time delay of (N+1) / 2 TD-SCDMA sub-frames is required toreach the last hopping if the N is an odd number. The invention also provides a communication system. By adopting the technical proposal of the invention, the time delay of reaching the last hopping in the N-time relay transmission is greatly shortened.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a system and method for realizing relay transmission. Background technique [0002] With the rapid development of high-speed network technology and multimedia technology, the third generation mobile communication system (3G), local multipoint distributed service (LMDS), multipoint multichannel distributed system technology (MMDS) and microwave access global interoperability system (WiMAX) and other wireless networks are developing extremely rapidly, wireless networks are gradually evolving from circuit switching technology to packet switching technology, and various wireless broadband access technologies are also emerging in an endless stream. [0003] figure 1 It is a schematic structural diagram of a traditional wireless communication system in the prior art. Such as figure 1 As shown, the system includes: a base station controller, a base station (BS) and a termi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04B7/15
CPCH04B7/2606
Inventor 唐臻飞尚政李江
Owner HUAWEI TECH CO LTD