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A time slot allocation method for td-scdma and ad hoc heterogeneous network

A TD-SCDMA, time slot allocation technology, applied in the field of heterogeneous networks, can solve problems such as reducing network capacity

Inactive Publication Date: 2016-06-08
HOHAI UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the one hand, the heterogeneous integration between different networks improves the network capacity, while on the other hand, the interference introduced by the same frequency reduces the network capacity

Method used

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  • A time slot allocation method for td-scdma and ad hoc heterogeneous network
  • A time slot allocation method for td-scdma and ad hoc heterogeneous network
  • A time slot allocation method for td-scdma and ad hoc heterogeneous network

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Embodiment 1

[0034] Embodiment 1: In a traditional TD-SCDMA network, a TD-SCDMA radio frame (RadioFrame) is 10ms long, 1.28MChips, and is divided into two subframes of 5ms. The subframe is 5ms long, that is, 6400 chips. Each subframe contains 7 fixed-length business time slots TS0~TS6 (675us), 3 special time slots: downlink transmission special frame (DwPTS), protection time slot (GP), uplink transmission special frame (UpPTS), such as figure 1 shown. Among the seven main time slots, except that TS0 must be used in the downlink direction and TS1 must be used in the uplink direction, the directions of the remaining time slots can be changed. At the same time, the uplink time slot and the downlink time slot are separated by a conversion point, the time slot before the conversion point is allocated as an uplink time slot, and the time slot after the conversion point is allocated as a downlink time slot.

[0035] For Adhoc network, we use the time slot allocation format similar to TD-SCDMA f...

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Abstract

The invention discloses a time slot allocation method for a TD-SCDMA and Ad hoc heterogeneous network, which comprises the following steps: obtaining the position of the conversion point of the TD-SCDMA subframe format; when there are two or more uplink time slots and downlink time slots Slots, respectively select two optimal uplink time slots and an optimal downlink time slot; allocate uplink time slots and downlink time slots; at least one uplink time slot or downlink time slot, if there is only one uplink time slot, Select 3 optimal downlink time slots and allocate them separately; if there is only one downlink time slot, select 3 optimal uplink time slots and allocate them respectively. The method of the invention can effectively reduce the additional interference of the heterogeneous network, maximize the network performance, and has the characteristics of easy implementation and superior performance.

Description

technical field [0001] The invention relates to a method for allocating time slots of TD-SCDMA and Adhoc heterogeneous networks, belonging to the field of heterogeneous networks. Background technique [0002] Among the various wireless communication systems that exist at present, time-division synchronous code division multiple access technology (TD-SCDMA) and self-organizing network (Adhoc) are two typical network structures. Among them, the TD-SCDMA network can provide coverage in a wide area and is a communication network controlled by the central government. A communication link is established between a mobile terminal and a base station to realize communication. Adhoc is a self-organizing short-distance communication network, which communicates directly through a single-hop or multi-hop mode without relying on a fixed base station. So Adhoc network can be used as a supplement of TD-SCDMA network, so as to realize any time, any place, seamless communication between any ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W52/24
Inventor 李旭杰孙颖李黎顾燕居美艳
Owner HOHAI UNIV
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