A method for expanding base station coverage distance in TDD radio communication system

A technology of wireless communication system and coverage distance, which is applied in the field of expanding base station coverage distance in TDD wireless communication system, can solve the problems of limited coverage distance of base station in TDD wireless communication system, and achieve the effect of convenient software upgrade and easy upgrade.

Inactive Publication Date: 2008-03-26
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is how to expand the coverage distance of the base station by increasing the time corresponding to the guard time slot between the downlink and uplink for the limited coverage distance of the base station in the TDD wireless communication system

Method used

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  • A method for expanding base station coverage distance in TDD radio communication system
  • A method for expanding base station coverage distance in TDD radio communication system
  • A method for expanding base station coverage distance in TDD radio communication system

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Embodiment 1

[0042]For TDD wireless communication systems where the uplink and downlink time slots are not divided into several small slots, such as SCDMA wireless communication systems, the software flow chart for expanding the coverage distance of the base station is shown in Figure 3, and the sequence diagram for expanding the coverage distance of the base station As shown in Figure 4, specifically:

[0043] 1) The timing control module keeps the timing cycle unchanged, and delays the time point 3 of the start of the uplink time slot and the time point 4 of the start of the guard time slot between uplink and downlink by G2-Ts (as shown in Figure 4); Time delay (G2-Ts) for the base station receiver to turn on;

[0044] 2) The timing control module delays the start time of the guard time slot between uplink and downlink by G2-Ts; the time corresponding to the guard time slot between uplink and downlink is shortened from G2 to Ts;

[0045] 3) The timing control module increases the time c...

Embodiment 2

[0057] For a TDD wireless communication system in which the uplink and downlink time slots are divided into several small slots, such as the TD-SCDMA wireless communication system, the timing diagram for expanding the coverage distance of the base station is shown in FIG. 6 . It can be seen from Figure 6 that the downlink time slots are divided into n small slots, respectively D0, D1, ..., Dn-1 time slots; the uplink time slots are divided into m small slots, respectively U0, U1, ... , Um-1 time slot. This TDD wireless communication system adopts the method described in the present invention to expand the base station coverage distance specifically as follows:

[0058] 1) The timing control module keeps the timing cycle unchanged, and advances the time when the transmitter is turned off by T1, where T1 is the sum of the times corresponding to the last several small slots in the downlink time slot;

[0059] 2) The timing control module advances the start time of the guard time...

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Abstract

This invention relates to a method for enlarging cover distance of base stations in a TDD radio communication system including: a time-sequence control module advances T1 the closing time of a transmitter or postpones T2 of the opening time of a receiver or their combination when keeping unchange of the time-sequence period of a TDD radio communication system to increase T1 or T2 or their combination corresponding to the protection time slot between up and down in the time-sequence period, which only needs to amend the distribution mode of time-sequence of a base station without considering a distance mode or amending process software of terminals.

Description

technical field [0001] The invention relates to a method for expanding the coverage distance of a base station in a wireless communication system, in particular to a method for expanding the coverage distance of a base station in a TDD wireless communication system. Background technique [0002] The base stations of the wireless communication system all have a certain coverage distance. For the FDD wireless communication system, the coverage distance of the base station depends on the link loss. For the wireless communication system operating in a certain frequency band and in a specific environment, the link loss increases with the distance between the terminal and the base station, so the increase As long as the transmission power of the terminal and the base station can offset the increased link loss caused by the increase in the distance, the coverage distance of the base station can be expanded. Therefore, for the FDD wireless communication system, increasing the transm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04B7/005H04L5/14
Inventor 岳彦生刘昀
Owner BEIJING XINWEI TELECOM TECH
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