Signal transmission method and device
View Patent ↗Disclosed are a signal transmission method and device, which are used to realize a technical solution whereby UE find one another under the control of a mobile communication network. The signal transmission method provided in the present invention comprises: UE acquiring resource location information from a network side, which is used for indicating the UE to send an identification signal of the UE; and the UE determining a specific resource which sends the identification signal according to the resource location information, and sending the identification signal of the UE over the specific resource.
1. A signal transmission method, comprising:
acquiring, by a UE, resource position information, used for indicating the UE to transmit identification signal of the UE, from a network side; and
determining, by the UE, a specific resource for transmitting the identification signal according to the resource position information, and transmitting the identification signal of the UE on the specific resource;
wherein the method further comprises:
acquiring, by the UE, parameter information used for indicating the UE to transmit the identification signal from the network side;
wherein the transmitting, by the UE, the identification signal of the UE on the specific resource comprises:
transmitting, by the UE, the identification signal of the UE on the specific resource according to the parameter information;
wherein transmitting, by the UE, the identification signal of the UE on the specific resource according to the parameter information comprises:
monitoring, by the UE, N consecutive identification signal sub-frames, wherein the N consecutive identification signal sub-frames are next N consecutive identification signal sub-frames beginning from the time of needing to transmit the identification signal, and N is a positive integer; and randomly selecting, by the UE, an identification signal resource to transmit its own identification signal if the N consecutive identification signal sub-frames are free; and/or
selecting, by the UE, a resource to transmit its own identification signal according to an indication of the resource position information, beginning from time of needing to transmit the identification signal; and repeatedly transmitting, by the UE, the identification signal for N times in a specific time according to repetition parameters transmitted by the network side, after transmitting the identification signal for the first time, wherein the specific time and N are the repetition parameters.
2. The method according to claim 1 , wherein transmitting, by the UE, the identification signal of the UE on the specific resource according to the parameter information comprises:
transmitting, by the UE, the identification signal of the UE on the specific resource in a form of broadcasting according to the parameter information.
3. The method according to claim 1 , wherein repeatedly transmitting, by the UE, the identification signal for N times in a specific time according to the repetition parameters transmitted by the network side, after transmitting the identification signal for the first time, comprises:
repeatedly transmitting, by the UE, the identification signal for N times in a specific time according to a specific sub-frame interval or a random sub-frame interval,
wherein N is a positive integer.
4. The method according to claim 1 , wherein when the identification signal sub-frames are not in a free state, the method further comprises:
waiting, by the UE, for a preset time length according to preset random distribution parameters, and monitoring again the next N consecutive identification signal sub-frames beginning from the time of needing to transmit the identification signal; or,
detecting, by the UE, N consecutive identification signal sub-frames in real time according to a window mechanism until the N consecutive identification signal sub-frames are free, and randomly selecting, by the UE, an identification signal resource to transmit the own identification signal.
5. The method according to claim 1 , wherein determining, by the UE, that the identification signal sub-frames are free comprises:
all of the N consecutive identification signal sub-frames are free; or,
loads of the N consecutive identification signal sub-frames are all less than a preset threshold value; or,
load of integral of the N identification signal sub-frames is less than a preset threshold value.
6. The method according to claim 1 , wherein the parameter information comprises at least one of following parameters:
a power parameter, a period parameter, a repetition parameter, and a modulation coding parameter.
7. A signal transmission device, comprising:
an information acquisition component, configured to acquire resource position information used for indicating UE to transmit identification signal of the UE from a network side; and
a transmission component, configured to determine a specific resource for transmitting the identification signal according to the resource position information, and to transmit the identification signal of the UE on the specific resource
wherein the information acquisition component is further configured to:
acquire, from the network side, parameter information used for indicating the UE to transmit the identification signal;
and the transmission component is specifically configured to:
transmit the identification signal of the UE on the specific resource according to the parameter information;
wherein the transmission component is specifically configured to:
monitor N consecutive identification signal sub-frames, wherein the N consecutive identification signal sub-frames are next N consecutive identification signal sub-frames beginning from the time of needing to transmit the identification signal, and N is a positive integer; and randomly select an identification signal resource to transmit its own identification signal, if the N consecutive identification signal sub-frames are free; and/or
select a resource to transmit its own identification signal according to an indication of the resource position information, beginning from time of needing to transmit the identification signal; repeatedly transmit the identification signal for N times in a specific time according to repetition parameters transmitted by the network side, after transmitting the identification signal for the first time, wherein the specific time and N are the repetition parameters, wherein N is a positive integer.
8. The device according to claim 7 , wherein the transmission component is specifically configured to:
determine a specific resource for transmitting the identification signal of the UE according to the resource position information;
and determine a specific resource for transmitting the identification signal according to the parameter information, and transmit the identification signal of the UE in a form of broadcasting on the specific resource.
9. The device according to claim 7 , wherein the transmission component is specifically configured to:
repeatedly transmit the identification signal for N times in a specific time according to the repetition parameters transmitted by the network side, after transmitting the identification signal for the first time, and repeatedly transmit the identification signal for N times in a specific time according to a specific sub-frame interval or a random sub-frame interval.
10. The device according to claim 7 , wherein the transmission component is further configured to:
if the identification signal sub-frames are not in a free state, wait for a preset time length according to preset random distribution parameters, and monitor again the next N consecutive identification signal sub-frames beginning from the time of needing to transmit the identification signal; or,
detect N consecutive identification signal sub-frames in real time according to a window mechanism until the N consecutive identification signal sub-frames are free, then the UE randomly selects an identification signal resource to transmit the own identification signal.
11. The device according to claim 7 , wherein the transmission component determining that the identification signal sub-frames are free comprises:
all of the N consecutive identification signal sub-frames are free; or,
loads of the N consecutive identification signal sub-frames are all less than a preset threshold value; or,
load of integral of the N identification signal sub-frames is all less than a preset threshold value.
12. The device according to claim 7 , wherein the parameter information comprises at least one of following parameters:
a power parameter, a period parameter, a repetition parameter, and a modulation coding parameter.