Communication control method and device
View Patent ↗Communication control method and device are provided. The method includes: determining M parts of resources for transmitting a control area in N parts of resources, wherein the N parts of resources are acquired by dividing, in a frequency domain, frequency resources of symbols for transmitting the control area in a s-TTI, M and N are integers, 1≤M≤N; and transmitting a PDCCH to a terminal through the control area. The method and device may realize communication control of the network to the terminal more flexibly and with less average resource overhead in the s-TTI technology.
1. A communication control method, comprising:
determining M parts of resources for transmitting a control area in N parts of resources, wherein the N parts of resources are acquired by dividing, in a frequency domain, frequency resources of symbols for transmitting the control area in a shortened Transmission Time Interval (s-TTI), M and N are integers, 1≤M≤N; and
transmitting a Physical Downlink Control Channel (PDCCH) to a terminal through the control area,
wherein determining the M parts of resources for transmitting the control area in the N parts of resources comprises:
numbering the N parts of resources; and
selecting the M parts of resources with numbers of mode (R_offset+iL, N) from the N parts of resources, where mode represents performing modulo operation to N with R_offset+iL, iϵ[0, M−1], R_offset is a resource offset, and L is an integer.
2. The method according to claim 1 , further comprising:
following determining the M parts of resources for transmitting the control area in the N parts of resources, transmitting an indication message which indicates a ratio of M to N to the terminal, so that the terminal detects the PDCCH based on the indication message.
3. The method according to claim 1 , wherein determining the M parts of resources for transmitting the control area in the N parts of resources comprises one of followings: selecting the M parts of resources from the N parts of resources at intervals; and selecting the M parts of resources from the N parts of resources without an interval.
4. The method according to claim 1 , wherein a value of N is determined based on agreement with the terminal or by a network.
5. The method according to claim 1 , wherein in the frequency domain, the frequency resources of the symbols for transmitting the control area in the s-TTI are divided in Physical Resource Block (PRB), in PRB group, in sub-carrier, or in sub-carrier group.
6. The method according to claim 1 , wherein a value of R_offset is a value determined based on an identifier (ID) of a cell or a value agreed with the terminal.
7. The method according to claim 1 , further comprising:
determining a position of the symbols for transmitting the control area in the s-TTI; and
indicating the position of the symbols for transmitting the control area in the s-TTI to the terminal.
8. A communication control method, comprising:
detecting a Physical Downlink Control Channel (PDCCH) sent by a network in a control area, wherein the control area occupies M parts of resources among N parts of resources, the N parts of resources are acquired by dividing, in a frequency domain, frequency resources of symbols for transmitting the control area in a shortened Transmission Time Interval (s-TTI), M and N are integers, and 1≤M≤N,
wherein resources with numbers of mode (R_offset+iL, N) are selected from the N parts of resources as the M parts of resources, where mode represents performing modulo operation to N with R_offset+iL, iϵ[0, M−1], R_offset is a a resource offset, and L is an integer.
9. The method according to claim 8 , further comprising:
receiving an indication message which indicates a ratio of M to N from the network, wherein detecting the PDCCH in the control area comprises detecting the PDCCH in the control area based on the indication message.
10. The method according to claim 8 , wherein the control area occupying the M parts of resources among the N parts of resources comprises one of followings: the control area occupying the M parts of resources distributed at intervals in the N parts of resources; and the control area occupying the M parts of resources distributed continuously in the N parts of resources.
11. The method according to claim 8 , wherein in the frequency domain, the frequency resources of the symbols for transmitting the control area in the s-TTI are divided in Physical Resource Block (PRB), in PRB group, in sub-carrier, or in sub-carrier group.
12. The method according to claim 8 , wherein a value of R_offset is a value determined based on an identifier (ID) of a cell or a value agreed with a terminal.
13. The method according to claim 8 , further comprising: prior to detecting the PDCCH sent by the network in the control area, acquiring a position of the symbols for transmitting the control area in the s-TTI from the network.
14. A communication control device, comprising:
a control area determining circuitry configured to determine M parts of resources for transmitting a control area in N parts of resources, wherein the N parts of resources are acquired by dividing, in a frequency domain, frequency resources of symbols for transmitting the control area in a shortened Transmission Time Interval (s-TTI), M and N are integers, 1≤M≤N; and
a downlink control channel transmitting circuitry configured to transmit a Physical Downlink Control Channel (PDCCH) to a terminal through the control area,
wherein the communication control device further comprises:
a numbering circuitry configured to number the N parts of resources; and
a selecting circuitry configured to select the M parts of resources with numbers of mode (R_offset+iL, N) from the N parts of resources, where mode represents performing modulo operation to N with R_offset+iL, iϵ[0, M−1], R_offset is a resource offset, and L is an integer.
15. The device according to claim 14 , further comprising an indication message transmitting circuitry configured to transmit an indication message which indicates a ratio of M to N to the terminal, so that the terminal detects the PDCCH based on the indication message.
16. The device according to claim 14 , wherein the control area determining circuitry is configured to select the M parts of resources from the N parts of resources at intervals or without an interval.
17. The device according to claim 14 , wherein a value of N is determined based on agreement with the terminal or by a network.
18. The device according to claim 14 , wherein in the frequency domain, the frequency resources of the symbols for transmitting the control area in the s-TTI are divided in Physical Resource Block (PRB), in PRB group, in sub-carrier, or in sub-carrier group.
19. A communication control device, comprising:
a Physical Downlink Control Channel (PDCCH) detecting circuitry configured to detect a PDCCH sent by a network in a control area, wherein the control area occupies M parts of resources among N parts of resources, the N parts of resources are acquired by dividing, in a frequency domain, frequency resources of symbols for transmitting the control area in a shortened Transmission Time Interval (s-TTI), M and N are integers, and 1≤N≤N,
wherein resources with numbers of mode (R_offset+iL, N) are selected from the N parts of resources as the M parts of resources, where mode represents performing modulo operation to N with R_offset+iL, iϵ[0, M−1], R_offset is a resource offset, and L is an integer.
20. The device according to claim 19 , further comprising:
an indication message receiving circuitry configured to receive an indication message which indicates a ratio of M to N from the network, wherein the PDCCH detecting circuitry is configured to detect the PDCCH in the control area based on the indication message.
21. The device according to claim 19 , wherein the control area occupying the M parts of resources among the N parts of resources comprises one of followings: the control area occupying the M parts of resources distributed at intervals in the N parts of resources; and the control area occupying the M parts of resources distributed continuously in the N parts of resources.
22. The device according to claim 19 , wherein in the frequency domain, the frequency resources of the symbols for transmitting the control area in the s-TTI are divided in Physical Resource Block (PRB), in PRB group, in sub-carrier, or in sub-carrier group.