Method and relay device for realizing wireless link orthogonality supporting relay cellular system
A cellular system, technology supporting relay, applied in the direction of transmission system, digital transmission system, time division multiplexing usage, etc., can solve the problems of ignoring and not being able to correctly determine the working mode of the four types of links
Active Publication Date: 2012-03-21
DATANG MOBILE COMM EQUIP CO LTD
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However, these two duplex methods ignore the relationship between Access link, Relay Link, DL and UL.
That is, this isolated duplex mode of Access Link and Relay Link, or the duplex mode of DL and UL in isolation, will ignore the relationship between DL and UL, Access Link and Relay Link, that is, Unable to correctly determine the working mode of the four types of links
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[0031] The present invention proposes a four-way relay scheme. First, it is determined that the RS has four types of links. It can be considered that the RS works in a four-way mode: access downlink, relay downlink, relay uplink, and access uplink. When implemented in the system, it can include: time-division four-way, frequency-division four-way and time-frequency four-way. There are many different implementation schemes for each type of four-way. In specific applications, by comprehensively considering interference, compatibility, and complexity and cost factors to choose.
[0032] The method for realizing wireless link orthogonality in the cellular system supporting relay of the present invention, by determining the four types of links of the RS, correspondingly determines the four-way mode of access downlink, relay downlink, relay uplink and access uplink ; Select the orthogonal mode comprising time division, frequency division and time-frequency division again, and determ...
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The invention relates to a method for realizing the orthogonality of radio links in cellular system supporting a relay and relays equipment (RS), which determines four link operating modes. Aiming at four links of the RS, an access downlink, a relay downlink, a relay uplink and an access uplink, four operating modes of the RS are provided; an orthogonal mode is selected and comprises a time division, a frequency division as well as a time and frequency division. Four operating modes under the orthogonal mode are determined according to the selected orthogonal mode, which comprises time and frequency division quardruplex in which four links of the RS are respectively and orthogonally partitioned in a time domain and a frequency domain, time division quardruplex in which four links of the RS are orthogonally partitioned in a time domain, and frequency division quardruplex in which four links of the RS are orthogonally partitioned in a frequency domain. The operating modes of time division quardruplex, the frequency division quardruplex and time and frequency division quardruplex of the RS are listed and classified by the method of the invention, simultaneously concrete application scenarios of various quardruplex modes are provided, thereby providing the method of realizing the orthogonality of four links of the RS for a mobile communication access system adopting a relay technology in the future.
Description
technical field [0001] The present invention relates to mobile communication wireless access system technology, more precisely relates to the wireless access system using relay (Relay) or relay station, relay equipment (RS) technology in the future mobile communication system, for solving the problem of the system In a special wireless link orthogonal way. Background technique [0002] Coverage is an important technical index of the wireless access system, and the wireless access system generally realizes the coverage of the service area through base stations or access points. However, due to the mobility of the terminal, it is entirely possible that the terminal is outside the service area and cannot obtain wireless access services; even if the terminal is within the service area, the transmission of the signal may still be blocked by obstacles on the transmission path, resulting in service failure. A drop in quality. In the future mobile communication system, it is neces...
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IPC IPC(8): H04L5/26H04L5/00
Inventor 张光辉苏昕孙韶辉
Owner DATANG MOBILE COMM EQUIP CO LTD