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An amalgamation and coexistence method for two time division duplex systems sharing spectrum resources

A technology of time-division duplex system and spectrum sharing, which is applied in the field of wireless and mobile communication, and can solve problems hindering the development of the wireless communication industry.

Active Publication Date: 2008-09-10
EASYWAY
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  • Claims
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Problems solved by technology

An ensuing problem is that so many new standards and new technology systems will bring operators a very high risk of standard selection and construction, hindering the development of the wireless communication industry

Method used

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  • An amalgamation and coexistence method for two time division duplex systems sharing spectrum resources
  • An amalgamation and coexistence method for two time division duplex systems sharing spectrum resources
  • An amalgamation and coexistence method for two time division duplex systems sharing spectrum resources

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Embodiment Construction

[0021] The method proposed in the present invention will be described below by taking IEEE802.16e system and TD-SCDMA system as an example to merge and coexist. In this example, the spectrum sharing mode of the two systems is that the working frequency band of the TD-SCDMA system is included in the working frequency band of the IEEE802.16e system. In the TD-SCDMA system, channel allocation is based on the subframe as the basic unit, such as Figure 1 As shown, the duration of each subframe is 5 milliseconds, including 7 service time slots and 3 special time slots of DwPTS, GP, and UpPTS. The working bandwidth of TD-SCDMA is 1.6MHz. For the TD-SCDMA system, the transmission frame defined in this specification is the subframe of the TD-SCDMA system. In this example, the TD-SCDMA system configures 4 business time slots as downlink time slots and 3 business time slots as uplink time slots. It should be noted that the physical channels with fixed positions in each frame of the T...

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Abstract

The invention pertains to the technical field of wireless and mobile communication technology and relates to a fusion and coexistence method of two time division duplex systems which share a spectrum resource, which comprises the steps that: time lengths of downlink transmission and uplink transmission of the two time division duplex systems as well as a relative shift between transmission frames of two systems are configured to align a guard space position converting from the downlink transmission to the uplink transmission and a guard space position converting from uplink transmission to the downlink transmission; if the two guard space positions can not be aligned, a time frequency resource is adopted to be reserved so as to guarantee that the sending of each system and the receiving of the other system are asynchronously processed; the two systems mutually reserve the time frequency resource for each other to ensure that the time frequency resource which is occupied by each system in a physical channel with a fixed position in the frame thereof, is not used by the other system; other time frequency resources are distributed in a dynamical, qua static, or static way between the two systems according to self-characteristics of two systems, load requirements and degree of coupling between the two systems. The fusion and coexistence method of two time division duplex systems provided by the invention can ensure better overall performances.

Description

technical field [0001] The invention belongs to the technical field of wireless and mobile communication, in particular to the transmission frame structure and resource allocation of a time division duplex (TDD) system, aiming at the shared spectrum resources of two time division duplex systems with the same transmission frame period and shared spectrum resources Fusion Coexistence Approach. Background technique [0002] In recent years, with the rapid development of wireless and mobile communication service requirements, new standards and new networks for future broadband wireless communication are also emerging, such as WiMAX, 3GPP LTE, 3GPP2 UMB, etc. These new standards have adopted similar key technologies, so there are similarities in performance and characteristics. At the same time, due to the influence of various factors, each standard has some quite strong supporting forces. Therefore, a variety of standards coexist, and the pattern of dominating one side will be...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04Q7/36H04Q7/22H04L5/14H04W16/14
CPCH04W16/14
Inventor 赵明王京许希斌周世东钟晓峰辛艳粟欣
Owner EASYWAY
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