Method and apparatus for device-to-device communication
A device communication and device technology, applied in wireless communication, machine-to-machine/machine-type communication services, wireless communication services, etc., can solve problems such as D2D coverage limitations, and achieve increased coverage, improved reliability, and increased coverage. effect of distance
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Embodiment 1
[0025] The device-to-device communication method of the embodiment of the present invention can be applied to a chained communication network. The chained communication network may specifically include a plurality of master control nodes, and each master control node forms a corresponding star node with its surrounding slave nodes. type network, and each master control node as a node in the chain communication network can be used to realize the multi-hop function of the chain communication network, refer to figure 1 , which shows a flow chart of the steps of Embodiment 1 of a method for device-to-device communication according to the present invention, which may specifically include:
[0026] Step 101, the current hop master control node controls the communication between any two slave nodes in the current star network corresponding to the current hop master control node;
[0027] refer to figure 2 , shows a schematic structural diagram of a chain communication network of th...
Embodiment 2
[0035] The method for device-to-device communication in this embodiment may further include the following optional technical solutions on the basis of the first embodiment above. refer to image 3, which shows a flow chart of the steps of an embodiment of a method for establishing a chained communication network according to the present invention, which may specifically include:
[0036] Step 301, the current hop master control node sends a downlink synchronization code to its surrounding slave nodes;
[0037] In a specific implementation, the first-hop master control node can be a node that initiates communication for the first time in an area. For example, assuming that there are a large number of nodes in the area, all nodes can be in the listening state in an idle state. If a node (assuming the aforementioned node 1) wants to initiate communication, it can first send a downlink synchronization code, such as PSS (PrimarySynchronizationSignal, primary synchronization signal...
Embodiment 3
[0071] The method for device-to-device communication in this embodiment may further include the following optional technical solutions on the basis of the second embodiment above.
[0072] refer to Figure 4 , which shows a flow chart of steps in Embodiment 3 of a method for device-to-device communication according to the present invention, which may specifically include:
[0073] Step 401, the current hop master control node sends downlink synchronization codes to its surrounding slave nodes;
[0074] Step 402, the current hop master control node broadcasts the first system information to its surrounding slave nodes, so that the surrounding slave nodes determine the resources of the random access channel according to the first system information;
[0075] Step 403, the current hop master control node receives the random access preamble sent by its surrounding slave nodes according to the resources of the random access channel;
[0076] Step 404, the current hop master contr...
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