Method and device in wireless communication system that supports broadcast signals
View Patent ↗A method and a device in a User Equipment (UE) and a base station used for wireless communication systems that support broadcast signals. The UE receives a first radio signal on a first time-frequency resource. The first radio signal comprises a first RS sequence, RSs in the first RS sequence are mapped from lower frequency to higher frequency in frequency domain, the first time-frequency resource belongs to a first frequency domain resource. The first frequency domain resource comprises K frequency domain sub-resource(s). (A) Position(s) of the K frequency domain sub-resource(s) in the first frequency domain resource is(are) unfixed, RSs of the first RS sequence in a given frequency domain sub-resource are not related to a position of the given frequency domain sub-resource in the first frequency domain resource. Therefore, the UE is able to correctly receive RSs even without knowing the position of frequency domain resources in the system bandwidth.
1. A method in a User Equipment (UE) that supports broadcast signals, comprising:
receiving a first radio signal on a first time-frequency resource;
wherein the first radio signal comprises part or all of a first RS sequence, RSs in the first RS sequence are mapped in sequence from lower frequency to higher frequency in frequency domain, the first time-frequency resource belongs to a first frequency domain resource in frequency domain; the first frequency domain resource comprises K frequency domain sub-resource; a position of the K frequency domain sub-resource in the first frequency domain resource is unfixed, RSs of the first RS sequence in a given frequency domain sub-resource are not related to a position of the given frequency domain sub-resource in the first frequency domain resource, the given frequency domain sub-resource is the K frequency domain sub-resource; the K is equal to 1, an RS of the first RS sequence in a given sub-carrier is related to the given sub-carrier's position in the first frequency domain resource; the given sub-carrier is located within the first frequency domain resource and out of the K frequency domain sub-resource.
2. The method according to claim 1 , comprising:
determining a first reference sequence,
wherein the RS of the first RS sequence in the given sub-carrier is related to the given sub-carrier's position relative to the K frequency domain sub-resource; the first reference sequence is used for generating the first RS sequence, the first reference sequence has a same length as the first RS sequence, the first RS sequence is generated from the first reference sequence being cyclically shifted by at least one element;
or,
determining a second reference sequence,
wherein an RS of the second reference sequence in the given sub-carrier is related to the given sub-carrier's position in the first frequency domain resource, the second reference sequence is used for generating the first RS sequence, the second reference sequence has a same length as the first RS sequence, RSs of the first RS sequence transmitted out of the K frequency domain sub-resource are corresponding elements in the second reference sequence, the second reference sequence is a pseudo random sequence;
or,
determining a second reference and a third reference sequence,
wherein an RS of the second reference sequence in the given sub-carrier is related to the given sub-carrier's position in the first frequency domain resource, the second reference sequence is used for generating the first RS sequence, the second reference sequence has a same length as the first RS sequence, RSs of the first RS sequence transmitted out of the K frequency domain sub-resource are corresponding elements in the second reference sequence, elements in the third reference sequence and RSs of the first RS sequence transmitted in the K frequency domain sub-resource have a one-to-one correspondence relationship, the second reference sequence and the third reference sequence are pseudo random sequences.
3. The method according to claim 2 , wherein an identifier of a serving cell of the UE is used for determining the first reference sequence; or, an identifier of a serving cell of the UE is used for determining the second reference sequence; or, an identifier of a serving cell of the UE is used for determining the second reference sequence and the third reference sequence.
4. The method according to claim 1 , comprising:
receiving downlink information, the downlink information is system information block;
wherein the downlink information is used for determining the first frequency domain resource, or the downlink information is used for determining the position of the K frequency domain sub-resource in the first frequency domain resource, or the downlink information is used for determining the first frequency domain resource and the position of the K frequency domain sub-resource in the first frequency domain resource.
5. The method according to claim 1 , wherein the first frequency domain resource occupies the entire system bandwidth.
6. A method in a Base Station that supports broadcast signals, comprising:
transmitting a first radio signal on a first time-frequency resource;
wherein the first radio signal comprises part or all of a first RS sequence, RSs in the first RS sequence are mapped in sequence from lower frequency to higher frequency in frequency domain, the first time-frequency resource belongs to a first frequency domain resource in frequency domain; the first frequency domain resource comprises K frequency domain sub-resource; a position of the K frequency domain sub-resource in the first frequency domain resource is unfixed, RSs of the first RS sequence in a given frequency domain sub-resource are not related to a position of the given frequency domain sub-resource in the first frequency domain resource, the given frequency domain sub-resource is the K frequency domain sub-resource; the K is equal to 1, an RS of the first RS sequence in a given sub-carrier is related to the given sub-carrier's position in the first frequency domain resource; the given sub-carrier is located within the first frequency domain resource and out of the K frequency domain sub-resource.
7. The method according to claim 6 , comprising
determining a first reference sequence;
wherein the RS of the first RS sequence in the given sub-carrier is related to the given sub-carrier's position relative to the K frequency domain sub-resource; the first reference sequence is used for generating the first RS sequence, the first reference sequence has a same length as the first RS sequence, the first RS sequence is generated from the first reference sequence being cyclically shifted by at least one element;
or,
determining a second reference sequence,
wherein an RS of the second reference sequence in the given sub-carrier is related to the given sub-carrier's position in the first frequency domain resource, the second reference sequence is used for generating the first RS sequence, the second reference sequence has a same length as the first RS sequence, RSs of the first RS sequence transmitted out of the K frequency domain sub-resource are corresponding elements in the second reference sequence, the second reference sequence is a pseudo random sequence;
or,
determining a second reference sequence and determining a third reference sequence,
wherein an RS of the second reference sequence in the given sub-carrier is related to the given sub-carrier's position in the first frequency domain resource, the second reference sequence is used for generating the first RS sequence, the second reference sequence has a same length as the first RS sequence, RSs of the first RS sequence transmitted out of the K frequency domain sub-resource are corresponding elements in the second reference sequence, elements in the third reference sequence and RSs of the first RS sequence transmitted in the K frequency domain sub-resource have a one-to-one correspondence relationship, the second reference sequence and the third reference sequence are pseudo random sequences.
8. The method according to claim 7 , wherein an identifier of a serving cell of a target receiver of the first radio signal is used for determining the first reference sequence; or, an identifier of a serving cell of a target receiver of the first radio signal is used for determining the second reference sequence; or, an identifier of a serving cell of a target receiver of the first radio signal is used for determining the second reference sequence and the third reference sequence.
9. The method according to claim 6 , comprising:
transmitting downlink information, the downlink information is system information block;
wherein the downlink information is used for determining the first frequency domain resource, or the downlink information is used for determining the position of the K frequency domain sub-resource in the first frequency domain resource, or the downlink information is used for determining the first frequency domain resource and the position of the K frequency domain sub-resource in the first frequency domain resource.
10. The method according to claim 6 , wherein the first frequency domain resource occupies the entire system bandwidth.
11. A User Equipment (UE) that supports broadcast signals, comprising:
a first receiver, receiving a first radio signal on a first time-frequency resource;
wherein the first radio signal comprises part or all of a first RS sequence, RSs in the first RS sequence are mapped in sequence from lower frequency to higher frequency in frequency domain, the first time-frequency resource belongs to a first frequency domain resource in frequency domain; the first frequency domain resource comprises K frequency domain sub-resource; a position of the K frequency domain sub-resource in the first frequency domain resource is unfixed, RSs of the first RS sequence in a given frequency domain sub-resource are not related to a position of the given frequency domain sub-resource in the first frequency domain resource, the given frequency domain sub-resource is the K frequency domain sub-resource; the K is equal to 1, an RS of the first RS sequence in a given sub-carrier is related to the given sub-carrier's position in the first frequency domain resource; the given sub-carrier is located within the first frequency domain resource and out of the K frequency domain sub-resource.
12. The UE according to claim 11 , wherein the first receiver is used for determining a first reference sequence; wherein the RS of the first RS sequence in the given sub-carrier is related to the given sub-carrier's position relative to the K frequency domain sub-resource; the first reference sequence is used for generating the first RS sequence, the first reference sequence has a same length as the first RS sequence, the first RS sequence is generated from the first reference sequence being cyclically shifted by at least one element;
or, the first receiver is used for determining a second reference sequence; wherein an RS of the second reference sequence in the given sub-carrier is related to the given sub-carrier's position in the first frequency domain resource; the second reference sequence is used for generating the first RS sequence; the second reference sequence has a same length as the first RS sequence, RSs of the first RS sequence transmitted out of the K frequency domain sub-resource are corresponding elements in the second reference sequence, the second reference sequence is a pseudo random sequence;
or, the first receiver is used for determining a second reference sequence and a third reference sequence; wherein an RS of the second reference sequence in the given sub-carrier is related to the given sub-carrier's position in the first frequency domain resource; the second reference sequence is used for generating the first RS sequence; the second reference sequence has a same length as the first RS sequence, RSs of the first RS sequence transmitted out of the K frequency domain sub-resource are corresponding elements in the second reference sequence; elements in the third reference sequence and RSs of the first RS sequence transmitted in the K frequency domain sub-resource have a one-to-one correspondence relationship, the second reference sequence and the third reference sequence are pseudo random sequences.
13. The UE according to claim 12 , wherein an identifier of a serving cell of the UE is used for determining the first reference sequence; or, an identifier of a serving cell of the UE is used for determining the second reference sequence; or, an identifier of a serving cell of the UE is used for determining the second reference sequence and the third reference sequence.
14. The UE according to claim 11 , wherein the first receiver receives downlink information, the downlink information is system information block; wherein the downlink information is used for determining the first frequency domain resource, or the downlink information is used for determining the position of the K frequency domain sub-resource in the first frequency domain resource, or the downlink information is used for determining the first frequency domain resource and the position of the K frequency domain sub-resource in the first frequency domain resource.
15. The UE according to claim 11 , wherein the first frequency domain resource occupies the entire system bandwidth.
16. A base station device that supports broadcast signals, comprising:
a first transmitter, transmitting a first radio signal on a first time-frequency resource;
wherein the first radio signal comprises part or all of a first RS sequence, RSs in the first RS sequence are mapped in sequence from lower frequency to higher frequency in frequency domain, the first time-frequency resource belongs to a first frequency domain resource in frequency domain; the first frequency domain resource comprises K frequency domain sub-resource; a position of the K frequency domain sub-resource in the first frequency domain resource is unfixed, RSs of the first RS sequence in a given frequency domain sub-resource are not related to a position of the given frequency domain sub-resource in the first frequency domain resource, the given frequency domain sub-resource is the K frequency domain sub-resource; the K is equal to 1, an RS of the first RS sequence in a given sub-carrier is related to the given sub-carrier's position in the first frequency domain resource; the given sub-carrier is located within the first frequency domain resource and out of the K frequency domain sub-resource.
17. The base station device according to claim 16 , wherein the first transmitter determines a first reference sequence; wherein the RS of the first RS sequence in the given sub-carrier is related to the given sub-carrier's position relative to the K frequency domain sub-resource; the first reference sequence is used for generating the first RS sequence; the first reference sequence has a same length as the first RS sequence; the first RS sequence is generated from the first reference sequence being cyclically shifted by at least one element;
or, the first transmitter determines a second reference sequence, wherein an RS of the second reference sequence in the given sub-carrier is related to the given sub-carrier's position in the first frequency domain resource, the second reference sequence is used for generating the first RS sequence, the second reference sequence has a same length as the first RS sequence, RSs of the first RS sequence transmitted out of the K frequency domain sub-resource are corresponding elements in the second reference sequence, the second reference sequence is a pseudo random sequence;
or, the first transmitter determines a second reference sequence and a third reference sequence, wherein an RS of the second reference sequence in the given sub-carrier is related to the given sub-carrier's position in the first frequency domain resource, the second reference sequence is used for generating the first RS sequence, the second reference sequence has a same length as the first RS sequence, RSs of the first RS sequence transmitted out of the K frequency domain sub-resource are corresponding elements in the second reference sequence, elements in the third reference sequence and RSs of the first RS sequence transmitted in the K frequency domain sub-resource have a one-to-one correspondence relationship, the second reference sequence and the third reference sequence are pseudo random sequences.
18. The method according to claim 17 , wherein an identifier of a serving cell of a target receiver of the first radio signal is used for determining the first reference sequence; or, an identifier of a serving cell of a target receiver of the first radio signal is used for determining the second reference sequence; or, an identifier of a serving cell of a target receiver of the first radio signal is used for determining the second reference sequence and the third reference sequence.
19. The base station device according to claim 16 , wherein the first transmitter transmits downlink information, the downlink information is system information block; wherein the downlink information is used for determining the first frequency domain resource, or the downlink information is used for determining the position of the K frequency domain sub-resource in the first frequency domain resource, or the downlink information is used for determining the first frequency domain resource and the position of the K frequency domain sub-resource in the first frequency domain resource.
20. The base station device according to claim 16 , wherein the first frequency domain resource occupies the entire system bandwidth.