Signal communication method and device
The present application discloses a signal transmission method and device that can achieve transmission of sidelink positioning reference signals so as to implement sidelink-based positioning. Embodiments of the present application provide a signal sending method used at a sending end, the method comprising: determining sidelink positioning reference signal (SPRS) resource configuration information of a first terminal on a sidelink; and sending, according to the SPRS resource configuration information, a SPRS to a second terminal via the sidelink, such that the second terminal performs positioning measurement on the basis of the SPRS.
1. A data transmitting method, comprises:
determining a Sidelink Positioning Reference Signal, SPRS, resource configuration information of a first terminal on a Sidelink;
transmitting an SPRS to a second terminal through the Sidelink according to the SPRS resource configuration information, wherein the SPRS is used for the second terminal to perform a positioning measurement;
wherein the SPRS resource configuration information comprises an SPRS frequency domain structure;
wherein the SPRS frequency domain structure comprises:
a plurality of continuous REs occupying a full bandwidth, and different SPRS resources being distinguished by a comb pattern of REs at equal interval.
2. The method according to claim 1 , wherein the SPRS resource configuration information comprises one or a combination of:
an SPRS resource set, SPRS resources, an SPRS time domain structure, or a sequence number of a slot for transmitting the SPRS to the second terminal.
3. The method according to claim 2 , wherein the SPRS resource set comprises at least one of following characteristics:
the SPRS resource set comprises at least one SPRS resource, and all SPRS resources in the SPRS resource set are associated with an antenna array of a same terminal, or
for new radio frequency bands FR1 and FR2, an identifier of each SPRS resource in the SPRS resource set is associated with an antenna array of a terminal, or
wherein the SPRS resources comprise at least one of following characteristics:
a comb factor Comb-N resource unit pattern of each of the SPRS resources is used to map an SPRS sequence to Resource Element, REs, in frequency domain;
the SPRS resource is described by at least one of: an SPRS resource ID, a sequence ID, a Comb-N value, a RE offset, an initial slot index and symbol index of the SPRS resource, a quantity of symbols of each SPRS resource, or a quasi co-location information of Synchronization Block/PBCH, SSB;
the quantity of symbols of the SPRS resource is pre-defined by protocol or pre-configured on a network side, or
the Comb-N value of the SPRS resource is pre-defined by protocol or pre-configured on a network side.
4. The method according to claim 2 , wherein the SPRS time domain structure supports two SPRS time domain structures as follows:
a single slot structure: Automatic Gain Control, AGC; SPRS; and Guard Period, GP, are placed in sequence from front to back in each slot;
a slot bundling structure: AGC, SPRS and GP are placed in sequence from front to back in a plurality of continuous slots.
5. The method according to claim 4 , wherein the slot bundling structure is used by a terminal to transmit an SPRS continuously in a broadcast mode,
or
wherein in the SPRS time domain structure, a quantity and locations of OFDM symbols occupied by the SPRS in time domain are predefined by protocol or configured on a network side.
6. The method according to claim 1 , wherein in the first frequency domain structure, a comb factor in frequency domain is predefined by protocol or configured on a network side, and different SPRS resources are mapped to different transmitting antenna arrays,
or
wherein the SPRS frequency domain structure supports a fixed RE pattern and a frequency hopping RE pattern.
7. The method according to claim 1 , wherein an SPRS frequency domain bandwidth in the SPRS frequency domain structure is pre-defined by protocol or configured on a network side, and a maximum value of the SPRS frequency domain bandwidth is a maximum system bandwidth of the Sidelink.
8. The method according to claim 1 , wherein the SPRS resource configuration information is pre-defined by protocol or determined by signaling; wherein the signaling comprises one or a combination of:
a broadcast signaling issued from a serving base station, a Downlink Control Information, DCI, signaling, a positioning dedicated signaling defined by Uu protocol of NR wireless air interface, or a positioning dedicated signaling of Proximity Communication Port PC5 protocol.
9. A signal transmitting device, comprises:
a memory configured to store program instructions;
a processor configured to invoke the program instructions stored in the memory to perform the method of claim 1 .
10. A signal receiving method, comprises:
determining a Sidelink Positioning Reference Signal, SPRS, resource configuration information of a first terminal on a Sidelink, wherein the SPRS resource configuration information is transmitted by a second terminal;
receiving an SPRS transmitted by the second terminal through the Sidelink according to the SPRS resource configuration information;
wherein the SPRS resource configuration information comprises an SPRS frequency domain structure;
wherein the SPRS frequency domain structure comprises:
a plurality of continuous REs occupying a full bandwidth, and different SPRS resources being distinguished by a comb pattern of REs at equal interval.
11. The method according to claim 10 , further comprises:
measuring the SPRS to obtain a positioning measurement value;
determining relative distance information from the second terminal to the first terminal according to the positioning measurement value.
12. The method according to claim 10 , wherein the SPRS resource configuration information comprises one or a combination of:
an SPRS resource set, SPRS resources, an SPRS time domain structure, or a sequence number of a slot for receiving the SPRS transmitted by the second terminal.
13. The method according to claim 12 , wherein the SPRS resource set comprises at least one of following characteristics:
the SPRS resource set comprises at least one SPRS resource, and all SPRS resources in the SPRS resource set are associated with an antenna array of a same terminal, or
for new radio frequency bands FR1 and FR2, an identifier of each SPRS resource in the SPRS resource set is associated with an antenna array of a terminal,
or
wherein the SPRS resources comprise at least one of following characteristics:
a comb factor Comb-N resource unit pattern of each of the SPRS resources is used to map an SPRS sequence to Resource Elements, REs, in frequency domain;
the SPRS resource is described by at least one of: an SPRS resource ID, a sequence ID, a Comb-N value, a RE offset, an initial slot index and symbol index of the SPRS resource, a quantity of symbols of each SPRS resource, or a quasi co-location information of Synchronization Block/PBCH, SSB;
the quantity of symbols of the SPRS resource is pre-defined by protocol or pre-configured on a network side, or
the Comb-N value of the SPRS resource is pre-defined by protocol or pre-configured on a network side.
14. The method according to claim 12 , wherein the SPRS time domain structure supports two SPRS time domain structures as follows:
a single slot structure: AGC, SPRS and GP are placed in sequence from front to back in each slot;
a slot bundling structure: AGC, SPRS and GP are placed in sequence from front to back in a plurality of continuous slots.
15. The method according to claim 14 , wherein the slot bundling structure is used by a terminal to transmit an SPRS continuously in a broadcast mode,
or
in the SPRS time domain structure, a quantity and locations of OFDM symbols occupied by the SPRS in time domain are predefined by protocol or configured on a network side.
16. The method according to claim 10 , wherein in the first frequency domain structure, a comb factor in frequency domain is predefined by protocol or configured on a network side, and different SPRS resources are mapped to different transmitting antenna arrays.
17. The method of claim 10 , wherein the SPRS frequency domain structure supports a fixed RE pattern and a frequency hopping RE pattern.
18. The method according to claim 10 , wherein an SPRS frequency domain bandwidth in the SPRS frequency domain structure is pre-defined by protocol or configured on a network side, and a maximum value of the SPRS frequency domain bandwidth is a maximum system bandwidth of the Sidelink.
19. The method according to claim 10 , wherein the SPRS resource configuration information is pre-defined by protocol or determined by signaling; wherein the signaling comprises one or a combination of:
a broadcast signaling issued from a serving base station, a Downlink Control Information, DCI, signaling, a positioning dedicated signaling defined by Uu protocol of NR wireless air interface, or a positioning dedicated signaling of Proximity Communication Port PC5 protocol.
20. A signal receiving device, comprises:
a memory configured to store program instructions;
a processor configured to invoke the program instructions stored in the memory to perform the method of claim 10 .