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Wireless time-frequency resource distribution and indication method of broadband trunked DMO system

A technology of broadband clustering and time-frequency resources, which is applied in the field of wireless communication, can solve the problems of large packet delay, high collision probability, and low spectrum efficiency, and achieve the effect of preventing resource collision and strong anti-interference

Inactive Publication Date: 2017-04-26
POTEVIO INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] 1. UE selects TRP in a resource pool with equal probability, and the probability of data packet collision is inevitable
[0015] 2. The TRP between UEs must be lightly loaded, resulting in a large delay in data packets, because heavy-duty services occupy more subframes, and the probability of collision is high
[0016] 3. The TRP method leads to low spectrum efficiency and low transmission efficiency of MAC PDU. It can only be used for the transmission of small data volumes such as voice services, and is not suitable for broadband image transmission.

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  • Wireless time-frequency resource distribution and indication method of broadband trunked DMO system
  • Wireless time-frequency resource distribution and indication method of broadband trunked DMO system

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Embodiment Construction

[0038] In order to make the technical principles, features and technical effects of the technical solution of the present application clearer, the technical solution of the present application will be described in detail below in conjunction with specific embodiments.

[0039] This application provides a broadband trunking DMO terminal wireless time-frequency resource allocation and indication method under the condition of no central control, using the DMO calling UE physical layer signal identifier to indicate the DMO call wireless resource allocation and occupation, preventing the calling UE in the adjacent area Use the used wireless resources to prevent resource collisions. The synchronization signal sent periodically also indicates channel occupancy. The calling UE broadcasts the calling number and called number of the application layer, notifies the holder of the right to speak, and pages the called UE.

[0040] The flow of a wireless time-frequency resource allocation a...

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Abstract

The present invention discloses a wireless time-frequency resource distribution and indication method of a DMO system. The method comprises steps of: dividing the wireless time-frequency resource into a plurality of special subchannels, and distributing one subchannel identification to each special subchannel; selecting one of the physical layer signals to take as a resource identification signal, setting the corresponding relation of the resource identification signal and the subchannel identification of the special subchannel; selecting one resource identification signal identification and sending the resource identification signal through the calling DMO user equipment (UE); and receiving the resource identification signal through the called DMO UE, and determining the special subchannel bearing the calling according to the corresponding relation.

Description

technical field [0001] The present application relates to the technical field of wireless communication, in particular to direct off-network (DMO) communication, and in particular to a method for allocating and indicating wireless time-frequency resources in a broadband trunking DMO system. Background technique [0002] Terrestrial Trunked Radio (Tetra, Terrestrial Trunked Radio) DMO communication uses a special 25KHz frequency point, which is completely independent from the frequency point of Tetra Trunked Radio (TMO). The receiver of the DMO terminal has a 25kHz hardware receiving filter (25KHz bandwidth per carrier). [0003] In the Tetra system, different group numbers correspond to different DMO carriers. All terminals in this group listen to the DMO carrier corresponding to this group. When a terminal enters the DMO state or the dual monitoring state, it must send the DMO bearer information in the external control information. In this way, other terminals know which...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/00H04W4/08H04W72/04H04W84/08
Inventor 强剑锋池连刚鲁智
Owner POTEVIO INFORMATION TECH