A link channel allocation method for a wireless link
A link channel and wireless link technology, which is applied in the field of link channel allocation, can solve the problems of increasing device channel transmission interference and occupying wireless channels, etc., to reduce the number of devices, reduce interference, and solve multi-channel wireless link interference. Effect
Active Publication Date: 2019-02-01
四川海格恒通专网科技有限公司
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Problems solved by technology
If two groups of users talk at the same time, two wireless channels need to be occupied. In this case, additional equipment is required and it is easy to generate inter-channel transmission interference
Method used
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Embodiment
[0035] Embodiment: A link channel allocation method of a wireless link in this embodiment includes the following steps:
[0036] S1: The link channel between the base stations adopts a wireless channel with a frequency interval of 25KHz. On the wireless channel with a frequency interval of 25KHz, a frame is divided into four time slots, such as figure 2 As shown, the four time slots are time slot 1, time slot 2, time slot 3 and time slot 4 in turn; the base station uses time slot 1 and time slot 2 to receive data, uses time slot 3 and time slot 4 to transmit data, or the base station Use time slot 1 and time slot 2 to transmit data, use time slot 3 and time slot 4 to receive data; when the base station receives data in time slot 1, it transmits the data received in time slot 1 in the next time slot 3; when the base station receives data in time slot 1 When data is received in time slot 3, the data received in time slot 3 is transmitted in the next time slot 1; when the base s...
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The invention provides a link channel allocation method of a wireless link. The method comprises the steps as follows: S1: a link channel between base stations uses a wireless channel with 25 KHz frequency space, and divides one frame as four time slots on the wireless channel with 25 KHz frequency space, wherein the four time slots are time slot 1, time slot 2, time slot 3 and time slot 4; S2: each base station uses a wireless frequency point Fp whose wireless frequency is p and a wireless frequency point Fq whose wireless frequency is q to receive and transmit signals; each base station uses different wireless frequencies to receive uplink data and downlink data and uses same wireless frequency to transmit the uplink data and the downlink data. The link channel allocation method of the invention uses the wireless channel with 25 KHz frequency space and divides one frame as four time slots on the wireless channel with 25 KHz frequency space so that one set of wireless equipment could simultaneously realize communication of two groups of users.
Description
technical field [0001] The invention relates to the technical field of link channel allocation, in particular to a method for link channel allocation of wireless links. Background technique [0002] In order to expand the communication coverage, the trunking communication system generally adopts multi-base station interconnection technology. Generally, wired and wireless links can be used for interconnection. If the base station interconnection uses the wireless channel in the same frequency band as the trunking channel as the wireless link, there will be capacity problems and interference problems. At present, the wireless channel of the 350M digital trunking system is divided by 12.5KHz frequency interval, and two TDMA logical channels are divided on the 12.5KHz wireless channel, that is, one frame is divided into two time slots, which can be used by two groups of users to talk at the same time. When this standard wireless channel is used as a base station link for two-w...
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IPC IPC(8): H04W72/04
Inventor 宋飞浩赖宏陈阳钟海
Owner 四川海格恒通专网科技有限公司