Wireless transmission method supporting relay mode and physical layer frame structure

A technology for wireless transmission and relay support. It is applied in transmission systems, communication between multiple stations, electrical components, etc. It can solve problems such as inappropriate relay working modes, increase cell coverage, achieve blind spot coverage and The effect of increasing hotspot capacity and improving system capacity

Active Publication Date: 2014-12-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this method is not applicable to relay working mode

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  • Wireless transmission method supporting relay mode and physical layer frame structure

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Embodiment Construction

[0036] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0037] The main idea of ​​the present invention is to provide a wireless communication method supporting a relay mode and a physical layer frame structure for realizing the communication method for a TDD OFDM wireless communication system. Each subframe of the physical layer frame further includes several regular service time slots and two guard intervals, ie, the first guard interval and the second guard interval. After the first guard interval, an uplink relay time slot is configured, and an uplink relay guard interval is used for one or more uplink regular service time slots of uplink services; after that is the second guard interval, followed by the second guard interval These are downlink relay time slots, downlink relay guard intervals, and one or more downlink regular service time slots for downlink services.

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Abstract

The invention discloses a wireless transmission method of a time division duplexing orthogonal frequency division multiplexing (TDD OFDM) system, which supports a repeater mode, and a corresponding physical layer frame structure. The method is used in a base station or a relay station to receive and / or transmit a wireless service. In each sub-frame of the physical layer frame, which carries a wireless service, after a first guard period completes switching from downlink to uplink, a service time slot for uplink relay and an uplink guard period are allocated; and after a second guard period completes switching from uplink to downlink, a service time slot for downlink relay and a downlink guard period are allocated. The inventive method allocates special uplink / downlink time slots and guard periods for uplink / downlink relays during transmission of uplink / downlink services, thereby realizing transmission of a relay service in the TDD OFDM system, increasing cell coverage area, improving system capacity, and realizing blind spot coverage and hot spot capacity expansion.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a wireless transmission method and a physical layer frame structure of a Time Division Duplex (TDD) Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) communication system supporting a relay (Relay) mode . Background technique [0002] The physical layer frame structure is the basis of any communication system, that is, each communication system contains its own unique physical layer frame structure. During the design process of the physical layer, it is necessary to fully consider and weigh the resource utilization rate of the communication system (such as spectrum efficiency, etc.), multiple access (access) methods, key technologies of the physical layer, and implementation feasibility. [0003] Wireless relay is one of the characteristic technologies of next-generation mobile communication. In a specific area, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04L29/06
Inventor 秦洪峰
Owner ZTE CORP
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