CN110730464A - Cross link interference measurement period configuration method, network side equipment and user terminal - Google Patents
Cross link interference measurement period configuration method, network side equipment and user terminal Download PDFInfo
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Abstract
The invention provides a cross link interference measurement period configuration method, network side equipment and a user terminal, and belongs to the technical field of wireless communication. The method for configuring the cross link interference measurement period is applied to a network side, and comprises the following steps: and sending cross link interference measurement period configuration information to the user terminal, wherein the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used for informing the user terminal to send or receive an interference measurement reference signal in a corresponding sub-period. The technical scheme of the invention can reduce the network signaling overhead and reduce the information interaction amount among networks.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method for configuring a cross-link interference measurement period, a network side device, and a user terminal.
Background
The 5G network takes user experience as a center, and realizes personalized and diversified service application. However, the difference between the uplink and downlink flow demand of different services is large, and it is difficult for the traditional TDD (Time Division Duplex) and FDD (Frequency Division Duplex) systems to better match the diversified service demand of the 5G network. In order to meet the flexible change requirement of uplink and downlink services, a flexible duplex technology is provided.
The flexible duplex technology breaks through a fixed configuration mode of Uplink and Downlink resources in a conventional cellular network system, and can dynamically configure Uplink and Downlink Transmission directions according to a cell service state, but when adjacent cells transmit information in different directions (Uplink or Downlink) on the same time-frequency resource, as shown in fig. 1, a cell 1 is in DL (Downlink), and a cell 2 is in UL (Uplink), which will bring about two types of CLI (Cross-link interference), that is, interference between TRP (Transmission Reference Point ) -TRP and UE (User Equipment) -UE.
However, since the transmission power of the TRP is usually much greater than that of the UE, and the antenna position is generally deployed at a higher level, the propagation attenuation loss between antennas is less, and the SINR of the uplink Signal is greatly reduced by the cross-link Interference between the TRP-TRPs ((Signal to Interference plus Noise Ratio), therefore, in the conventional LTE (Long Term Evolution) system, in order to improve the system throughput, some Interference cancellation schemes are proposed to avoid the cross-link Interference between the TRP-TRPs of the uplink transmission caused by the downlink transmission, such as link adaptation, scheduling coordination, and power control.
In consideration of key scenes such as small cells, indoor hot spots and the like, the cross link interference between the UE and the UE can also generate serious interference on the system, and the cross link interference measurement and interference information reporting between the UE and the UE also become a research hotspot of the 5G flexible duplex system. A method for inter-user cross link interference measurement may be: a user obtains interference information of adjacent cell users by measuring uplink reference signals sent by the adjacent cell users around, and an interference list is established; then, cross link interference information is fed back to the service base station, cross link interference information of a plurality of users can be obtained through information interaction between the base stations, and then operations such as interference coordination, interference suppression and the like are completed. In addition, considering that cell edge users may suffer more serious cross link interference than central users, and the number of users causes higher complexity of establishing an interference list, and the like, the base station may configure all or part of users in the cell through Radio Resource Control (RRC) signaling to perform inter-user cross link interference measurement. However, when the base station performs interference measurement configuration on a user through a high-level signaling, a large amount of information (including interference measurement configuration signaling, interference information, and the like) is required to be exchanged between base stations, where the information is exchanged between cells through an Xn interface if the cells belong to cells of different CUs (Centralized units), the information is exchanged between cells through a CU and then through an F1 interface if the cells are exchanged between DUs (Distributed units) controlled by one CU, and the information is exchanged between cells through the inside of a DU if the cells are different below the DU, so that the signaling overhead of the base stations is high and the information exchange amount between the base stations is large.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method for configuring a measurement cycle of cross link interference, a network side device and a user terminal, which can reduce network signaling overhead and reduce information interaction amount between networks.
To solve the above technical problem, embodiments of the present invention provide the following technical solutions:
in one aspect, a method for configuring a cross link interference measurement period is provided, which is applied to a network side, and the method includes:
and sending cross link interference measurement period configuration information to the user terminal, wherein the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used for informing the user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
Further, the sending the cross link interference measurement cycle configuration information to the user terminal includes:
and sending the cross link interference measurement period configuration information to the user terminal through Radio Resource Control (RRC) signaling.
Further, the interference measurement joint transceiving cycle is composed of a plurality of sub-cycles with equal sizes, wherein one part of the sub-cycles is a transmission cycle in which the user terminal transmits the interference measurement reference signal, and the other part of the sub-cycles is a reception cycle in which the user terminal receives the interference measurement reference signal.
Further, the sub-period is a configuration period of a periodic or semi-persistent interference measurement reference signal.
Further, the number of the user terminal groups which need to perform cross link interference measurement during interaction between networks is n, each user terminal group comprises at least one user terminal, and n is an integer greater than 1;
the interference measurement combined transceiving period comprises n sub-periods, the sending period is m sub-periods in the n sub-periods, the receiving period is the remaining n-m sub-periods, and m is a positive integer smaller than n.
Further, when the non-orthogonal configuration of the reference signal sequence is measured between the user terminal groups, the transmission period of the kth user terminal group is the kth sub-period of the n sub-periods; and when the orthogonal configuration of the reference signal sequence is measured among the user terminal groups, the receiving period of the kth user terminal group is the kth sub-period in the n sub-periods, and k is the number of the user terminal group after the user terminal group is sequenced.
Further, each sub-period is the srs period, and includes t slots, where t is a positive integer.
The embodiment of the invention also provides a method for configuring the cross link interference measurement period, which is applied to the user terminal side, and the method comprises the following steps:
receiving cross link interference measurement period configuration information sent by a network side, wherein the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used for informing a user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
Further, the receiving the cross link interference measurement cycle configuration information sent by the network side includes:
and receiving the cross link interference measurement period configuration information sent by the network side through Radio Resource Control (RRC) signaling.
Further, the interference measurement joint transceiving cycle is composed of a plurality of sub-cycles with equal sizes, wherein one part of the sub-cycles is a transmission cycle in which the user terminal transmits the interference measurement reference signal, and the other part of the sub-cycles is a reception cycle in which the user terminal receives the interference measurement reference signal.
Further, the sub-period is a configuration period of a periodic or semi-persistent interference measurement reference signal.
Further, the number of the user terminal groups which need to perform cross link interference measurement during interaction between networks is n, each user terminal group comprises at least one user terminal, and n is an integer greater than 1;
the interference measurement combined transceiving period comprises n sub-periods, the sending period is m sub-periods in the n sub-periods, the receiving period is the remaining n-m sub-periods, and m is a positive integer smaller than n.
Further, when the non-orthogonal configuration of the reference signal sequence is measured between the user terminal groups, the transmission period of the kth user terminal group is the kth sub-period of the n sub-periods; and when the orthogonal configuration of the reference signal sequence is measured among the user terminal groups, the receiving period of the kth user terminal group is the kth sub-period in the n sub-periods, and k is the number of the user terminal group after the user terminal group is sequenced according to the cell identifier corresponding to the user terminal group.
Further, each sub-period is the srs period, and includes t slots, where t is a positive integer.
The embodiment of the invention also provides a cross link interference measurement period configuration method, which is applied to a network side and comprises the following steps:
and sending cross link interference measurement period configuration information to the user terminal, wherein the cross link interference measurement period configuration information is used for informing the user terminal to receive the interference measurement reference signal in a corresponding period, and abandoning the sending of the interference measurement reference signal when the interference measurement period and the sending period of the interference measurement reference signal conflict in a time slot.
Further, the sending the cross link interference measurement cycle configuration information to the user terminal includes:
and sending the cross link interference measurement period configuration information to the user terminal through Radio Resource Control (RRC) signaling.
Further, the transmission period of the interference measurement reference signal is a configuration period of a sounding reference signal SRS which is periodic or semi-continuous periodic.
The embodiment of the invention also provides a method for configuring the cross link interference measurement period, which is applied to the user terminal side, and the method comprises the following steps:
receiving cross link interference measurement period configuration information sent by a network side, wherein the cross link interference measurement period configuration information is used for informing a user terminal to receive an interference measurement reference signal in a corresponding period, and abandoning the sending of the interference measurement reference signal when the interference measurement period and the sending period of the interference measurement reference signal collide in a time slot.
Further, the receiving the cross link interference measurement cycle configuration information sent by the network side includes:
and receiving the cross link interference measurement period configuration information sent by the network side through Radio Resource Control (RRC) signaling.
Further, the transmission period of the interference measurement reference signal is a configuration period of a sounding reference signal SRS which is periodic or semi-continuous periodic.
The embodiment of the invention also provides a network side device, which comprises a transceiver and a processor,
the transceiver is configured to send cross link interference measurement period configuration information to the user terminal, where the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used to notify the user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
Further, the transceiver is specifically configured to send the cross link interference measurement cycle configuration information to the user terminal through radio resource control, RRC, signaling.
Further, the interference measurement joint transceiving cycle is composed of a plurality of sub-cycles with equal sizes, wherein one part of the sub-cycles is a transmission cycle in which the user terminal transmits the interference measurement reference signal, and the other part of the sub-cycles is a reception cycle in which the user terminal receives the interference measurement reference signal.
Further, the sub-period is a period of a periodic or semi-persistent interference measurement reference signal.
Further, the number of the user terminal groups which need to perform cross link interference measurement during interaction between networks is n, each user terminal group comprises at least one user terminal, and n is an integer greater than 1;
the interference measurement combined transceiving period comprises n sub-periods, the sending period is m sub-periods in the n sub-periods, the receiving period is the remaining n-m sub-periods, and m is a positive integer smaller than n.
Further, when the non-orthogonal configuration of the reference signal sequence is measured between the user terminal groups, the transmission period of the kth user terminal group is the kth sub-period of the n sub-periods; and when the orthogonal configuration of the reference signal sequence is measured among the user terminal groups, the receiving period of the kth user terminal group is the kth sub-period in the n sub-periods, and k is the number of the user terminal group after the user terminal group is sequenced.
Further, each sub-period is the srs period, and includes t slots, where t is a positive integer.
The embodiment of the invention also provides a user terminal, which comprises a processor and a transceiver,
the transceiver is configured to receive cross link interference measurement period configuration information sent by a network side, where the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used to notify a user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
Further, the transceiver is specifically configured to receive the cross link interference measurement cycle configuration information sent by the network side through radio resource control RRC signaling.
Further, the interference measurement joint transceiving cycle is composed of a plurality of sub-cycles with equal sizes, wherein one part of the sub-cycles is a transmission cycle in which the user terminal transmits the interference measurement reference signal, and the other part of the sub-cycles is a reception cycle in which the user terminal receives the interference measurement reference signal.
Further, the sub-period is a configuration period of a periodic or semi-persistent interference measurement reference signal.
Further, the number of the user terminal groups which need to perform cross link interference measurement during interaction between networks is n, each user terminal group comprises at least one user terminal, and n is an integer greater than 1;
the interference measurement combined transceiving period comprises n sub-periods, the sending period is m sub-periods in the n sub-periods, the receiving period is the remaining n-m sub-periods, and m is a positive integer smaller than n.
Further, when the non-orthogonal configuration of the reference signal sequence is measured between the user terminal groups, the transmission period of the kth user terminal group is the kth sub-period of the n sub-periods; and when the orthogonal configuration of the reference signal sequence is measured among the user terminal groups, the receiving period of the kth user terminal group is the kth sub-period in the n sub-periods, and k is the number of the user terminal group after the user terminal group is sequenced according to the cell identifier corresponding to the user terminal group.
Further, each sub-period is the srs period, and includes t slots, where t is a positive integer.
The embodiment of the invention also provides a network side device, which comprises a processor and a transceiver,
the transceiver is configured to send cross link interference measurement cycle configuration information to the user terminal, where the cross link interference measurement cycle configuration information is used to notify the user terminal to receive an interference measurement reference signal in a corresponding cycle, and to discard transmission of the interference measurement reference signal when the interference measurement cycle collides with a transmission cycle of the interference measurement reference signal in a time slot.
Further, the transceiver is specifically configured to send the cross link interference measurement cycle configuration information to the user terminal through radio resource control, RRC, signaling.
Further, the transmission period of the interference measurement reference signal is a configuration period of a sounding reference signal SRS which is periodic or semi-continuous periodic.
The embodiment of the invention also provides a user terminal, which comprises a processor and a transceiver,
the transceiver is configured to receive cross link interference measurement period configuration information sent by a network side, where the cross link interference measurement period configuration information is used to notify a user terminal to receive an interference measurement reference signal in a corresponding period, and when the interference measurement period and a transmission period of the interference measurement reference signal collide in a time slot, the transceiver abandons transmission of the interference measurement reference signal.
Further, the transceiver is specifically configured to receive the cross link interference measurement cycle configuration information sent by the network side through radio resource control RRC signaling.
Further, the transmission period of the interference measurement reference signal is a configuration period of a sounding reference signal SRS which is periodic or semi-continuous periodic.
The embodiment of the invention also provides network side equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor; the processor, when executing the program, implements the cross link interference measurement cycle configuration method as described above.
The embodiment of the invention also provides a user terminal, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor; the processor, when executing the program, implements the cross link interference measurement cycle configuration method as described above.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps in the method for configuring a measurement period of cross link interference measurement as described above.
The embodiment of the invention has the following beneficial effects:
in the above scheme, the network side device sends cross link interference measurement period configuration information to the user terminal, where the cross link interference measurement period configuration information is an interference measurement joint transceiving period and is used to notify the user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
Drawings
Fig. 1 is a schematic diagram of cross-link interference;
fig. 2 is a flowchart illustrating a cross link interference measurement period configuration method applied to a network side device according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a cross link interference measurement period configuration method applied to a ue according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a cross link interference measurement period configuration method applied to a network side device according to another embodiment of the present invention;
fig. 5 is a flowchart illustrating a cross link interference measurement period configuration method applied to a ue according to another embodiment of the present invention;
fig. 6 is a schematic diagram of an interference measurement joint transceiving cycle in accordance with an embodiment of the present invention;
fig. 7 is a schematic diagram of a joint transceiving cycle of interference measurement according to a second embodiment of the present invention;
fig. 8 is a schematic diagram of an interference measurement joint transceiving cycle according to a third embodiment of the present invention;
fig. 9 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a user terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
Embodiments of the present invention provide a method for configuring a measurement period of cross link interference, a network side device, and a user terminal, which can reduce network signaling overhead and reduce information interaction amount between networks.
An embodiment of the present invention provides a method for configuring a cross link interference measurement period, which is applied to a network side, and as shown in fig. 2, the method includes:
step 101: and sending cross link interference measurement period configuration information to the user terminal, wherein the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used for informing the user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
In this embodiment, a network side device sends cross link interference measurement period configuration information to a user terminal, where the cross link interference measurement period configuration information is an interference measurement joint transceiving period and is used to notify the user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
Further, the sending the cross link interference measurement cycle configuration information to the user terminal includes:
and sending the cross link interference measurement period configuration information to the user terminal through Radio Resource Control (RRC) signaling.
Further, the interference measurement joint transceiving cycle is composed of a plurality of sub-cycles with equal sizes, wherein one part of the sub-cycles is a transmission cycle in which the user terminal transmits the interference measurement reference signal, and the other part of the sub-cycles is a reception cycle in which the user terminal receives the interference measurement reference signal.
Further, the sub-period is a configuration period of a periodic or semi-persistent interference measurement reference signal.
Further, the number of the user terminal groups which need to perform cross link interference measurement during interaction between networks is n, each user terminal group comprises at least one user terminal, and n is an integer greater than 1;
the interference measurement combined transceiving period comprises n sub-periods, the sending period is m sub-periods in the n sub-periods, the receiving period is the remaining n-m sub-periods, and m is a positive integer smaller than n.
Further, when the non-orthogonal configuration of the reference signal sequence is measured between the user terminal groups, the transmission period of the kth user terminal group is the kth sub-period of the n sub-periods; and when the orthogonal configuration of the reference signal sequence is measured among the user terminal groups, the receiving period of the kth user terminal group is the kth sub-period in the n sub-periods, and k is the number of the user terminal group after the user terminal group is sequenced.
Further, each sub-period configures a period for the sounding reference signal, where the period includes t slots, and t is a positive integer.
An embodiment of the present invention further provides a method for configuring a cross link interference measurement period, which is applied to a user equipment, and as shown in fig. 3, the method includes:
step 201: receiving cross link interference measurement period configuration information sent by a network side, wherein the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used for informing a user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
In this embodiment, a network side device sends cross link interference measurement period configuration information to a user terminal, where the cross link interference measurement period configuration information is an interference measurement joint transceiving period and is used to notify the user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
Further, the receiving the cross link interference measurement cycle configuration information sent by the network side includes:
and receiving the cross link interference measurement period configuration information sent by the network side through Radio Resource Control (RRC) signaling.
Further, the interference measurement joint transceiving cycle is composed of a plurality of sub-cycles with equal sizes, wherein one part of the sub-cycles is a transmission cycle in which the user terminal transmits the interference measurement reference signal, and the other part of the sub-cycles is a reception cycle in which the user terminal receives the interference measurement reference signal.
Further, the sub-period is a period of a periodic or semi-persistent interference measurement reference signal.
Further, the number of the user terminal groups which need to perform cross link interference measurement during interaction between networks is n, each user terminal group comprises at least one user terminal, and n is an integer greater than 1;
the interference measurement combined transceiving period comprises n sub-periods, the sending period is m sub-periods in the n sub-periods, the receiving period is the remaining n-m sub-periods, and m is a positive integer smaller than n.
Further, when the non-orthogonal configuration of the reference signal sequence is measured between the user terminal groups, the transmission period of the kth user terminal group is the kth sub-period of the n sub-periods; and when the orthogonal configuration of the reference signal sequence is measured among the user terminal groups, the receiving period of the kth user terminal group is the kth sub-period in the n sub-periods, and k is the number of the user terminal group after the user terminal group is sequenced according to the cell identifier corresponding to the user terminal group.
Further, each sub-period configures a period for the sounding reference signal, where the period includes t slots, and t is a positive integer.
Further, each group of user terminals comprises all users of the same cell.
An embodiment of the present invention further provides a method for configuring a cross link interference measurement period, which is applied to a network side, and as shown in fig. 4, the method includes:
step 301: and sending cross link interference measurement period configuration information to the user terminal, wherein the cross link interference measurement period configuration information is used for informing the user terminal to receive the interference measurement reference signal in a corresponding period, and abandoning the sending of the interference measurement reference signal when the interference measurement period and the sending period of the interference measurement reference signal conflict in a time slot.
In this embodiment, the network side device sends cross link interference measurement period configuration information to the user terminal, where the cross link interference measurement period configuration information is used to notify the user terminal to receive an interference measurement reference signal in a corresponding period, and when the interference measurement period and a transmission period of the interference measurement reference signal collide in a time slot, the network side device abandons transmission of the interference measurement reference signal. Compared with the traditional method, the technical scheme of the invention only needs to exchange the interference measurement reference signal configuration information and the configuration information of the joint transceiving period once between the network side equipment such as the base station when the interference measurement of the long-term cross link is carried out, thereby reducing the signaling overhead and the signaling interaction between the base stations.
Further, the sending the cross link interference measurement cycle configuration information to the user terminal includes:
and sending the cross link interference measurement period configuration information to the user terminal through Radio Resource Control (RRC) signaling.
Further, the transmission period of the interference measurement reference signal is a configuration period of a sounding reference signal SRS which is periodic or semi-continuous periodic.
An embodiment of the present invention further provides a method for configuring a cross link interference measurement period, which is applied to a user terminal side, and as shown in fig. 5, the method includes:
step 401: receiving cross link interference measurement period configuration information sent by a network side, wherein the cross link interference measurement period configuration information is used for informing a user terminal to receive an interference measurement reference signal in a corresponding period, and abandoning the sending of the interference measurement reference signal when the interference measurement period and the sending period of the interference measurement reference signal collide in a time slot.
In this embodiment, the network side device sends cross link interference measurement period configuration information to the user terminal, where the cross link interference measurement period configuration information is used to notify the user terminal to receive an interference measurement reference signal in a corresponding period, and when the interference measurement period and a transmission period of the interference measurement reference signal collide in a time slot, the network side device abandons transmission of the interference measurement reference signal. Compared with the traditional method, the technical scheme of the invention only needs to exchange the interference measurement reference signal configuration information and the configuration information of the joint transceiving period once between the network side equipment such as the base station when the interference measurement of the long-term cross link is carried out, thereby reducing the signaling overhead and the signaling interaction between the base stations.
Further, the receiving the cross link interference measurement cycle configuration information sent by the network side includes:
and receiving the cross link interference measurement period configuration information sent by the network side through Radio Resource Control (RRC) signaling.
Further, the transmission period of the interference measurement reference signal is a configuration period of a sounding reference signal SRS which is periodic or semi-continuous periodic.
The cross link interference measurement period configuration method of the present invention is further described with reference to the accompanying drawings and specific embodiments, and in order to reduce network signaling overhead and reduce information interaction amount between networks, the present embodiment provides a configuration method for jointly configuring a ue to receive and transmit an interference measurement reference signal in a flexible duplex system.
In this embodiment, the base station performs interference measurement configuration on the ue through RRC signaling, including related configuration for sending measurement reference information by the interference source ue and related configuration for receiving the measurement reference information by the interference source ue. In the long-term interference measurement, a reference signal used for interference measurement is configured as a periodic or aperiodic reference signal. If the reference signal for long-term measurement is configured periodically, the joint transceiving cycle configuration method for jointly configuring the period of the reference signal for interference measurement transceiving by the ue in this embodiment may be:
1. according to the indication information of the uplink and downlink transmission directions of the subframe, the cells needing cross link interference measurement are interacted among the cells, and if n cells exist, the transmission directions of all user terminals in the cells are consistent under the condition of not considering full duplex, so that users in each cell can be divided into a user terminal group;
2. completing one circulation of n cell interference measurements, and configuring n measurement time-frequency resources;
3. assuming that the period of the periodic interference measurement reference signal transmitted/received by each user terminal group is configured as T _ meaRS, and the value of the T _ meaRS is T slot, the period of the user terminal jointly configured to receive and transmit the interference measurement reference signal (i.e. the joint receiving and transmitting period) is configured as T × n slot;
4. reordering the numbers of each user terminal group according to the cell ID corresponding to the user terminal group, wherein the corresponding number can be represented as 1,2, … …, n;
5. if the reference signal sequence among the user terminal groups is configured in a non-orthogonal way, the nth t slot of the nth user terminal group in the time period of t × nslot sends an interference measurement reference signal, the other n-1 t slots discard the interference measurement reference signal configured on the corresponding time frequency resource position, and the interference measurement reference signals sent by the other user terminal groups are received on the time frequency resource positions corresponding to the other n-1 t slots to carry out cross link interference measurement;
6. if the reference signal sequence among the user terminal groups is configured orthogonally, the interference measurement reference signal configured at the corresponding time frequency resource position is discarded at the nth t slot in the time period of t × n slots by the nth user terminal group, the interference measurement reference signal sent by other user terminal groups is received at the corresponding time frequency resource position to carry out cross link interference measurement, and the interference measurement reference signal is sent at the remaining n-1 t slots.
Optionally, when the number of the user terminals in the cell is small, the user terminals may not be grouped, and at this time, only the user terminals need to be jointly reordered and numbered according to the cell ID and the user terminal ID, and then the periodic configuration of the user terminals for jointly configuring the transmission and reception of the interference measurement reference signal is performed according to the total number of the user terminals.
Optionally, one user terminal group may send interference measurement reference signals in m t slots of n t slots, and receive interference measurement reference signals in the remaining n-m t slots.
Assuming that there are three cells in total, the three cells belong to different CUs respectively, each cell has one UE, which is denoted as UE1, UE2, and UE3, indicating information of uplink and downlink transmission directions of subframes is interacted among base stations of the three cells through an Xn interface, it is determined that the number of UEs requiring cross link interference measurement is three, and the three UEs are reordered into 1,2, and 3 (corresponding to UE1, UE2, and UE3, respectively) according to the size of the cell ID where the three UEs are located. Assuming that the period of the interference measurement reference signal of each base station to the user terminal in the cell is configured to be 10 slots, the period is 10ms when the subcarrier spacing of 15kHz is considered. At this time, each base station configures the period of receiving and transmitting the interference measurement reference signal by the combined configuration user terminal into 30ms according to the number of the user terminal groups needing cross link interference measurement obtained by the interactive information, and instructs the user terminal to perform the receiving and transmitting operation of the interference measurement reference signal on the corresponding time-frequency resource through RRC signaling.
In a first specific embodiment, a transceiving condition of each UE may be shown as fig. 6, as shown in fig. 6, in a joint transceiving period of 30ms, the first 10ms is used for the UE1 to transmit an interference measurement reference signal, and the UE2 and the UE3 receive the interference measurement reference signal and perform cross-link interference measurement; the second 10ms is for UE2 to send an interference measurement reference signal, and UE1 and UE2 receive the interference measurement reference signal; the third 10ms is for UE3 to send an interference measurement reference signal, which is received by UE1 and UE 2.
In a second specific embodiment, the transceiving situation of each UE may be shown as fig. 7, as shown in fig. 7, in a joint transceiving period of 30ms, a first 10ms is used for the UE1 to receive the interference measurement reference signals transmitted by the UE2 and the UE 3; the second 10ms is for the UE2 to receive the interference measurement reference signals transmitted by the UE1 and the UE 3; the third 10ms is for the UE3 to receive the interference measurement reference signals transmitted by UE1 and UE 2.
In the above embodiment, the configuration information of the measurement reference signal and the configuration information of the joint transceiving cycle need to be exchanged only once between the base stations, thereby reducing signaling interaction between the base stations.
In the third embodiment, as shown in fig. 8, the base station configures, by using RRC signaling, a transmission period of a measurement reference signal for a user terminal group that needs to perform cross link interference measurement to be 2 slots, and transmits an SRS in a first slot of each transmission period; the measurement period of the cross link interference measurement is 5 slots, and the SRS is received in the first slot of each measurement period. As shown in fig. 8, when the transmission period and the measurement period of the sounding reference signal of the user terminal group collide with slot1 and slot11, the transmission of the sounding reference signal SRS is discarded, and only the reception of the sounding reference signal SRS is retained.
The embodiment of the present invention further provides a network side device, as shown in fig. 9, including a transceiver 32 and a processor 31,
the transceiver 32 is configured to send cross link interference measurement period configuration information to the ue, where the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used to notify the ue to send or receive an interference measurement reference signal in a corresponding sub-period.
In this embodiment, a network side device sends cross link interference measurement period configuration information to a user terminal, where the cross link interference measurement period configuration information is an interference measurement joint transceiving period and is used to notify the user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
Further, the transceiver 32 is specifically configured to send the cross link interference measurement cycle configuration information to the user equipment through radio resource control RRC signaling.
Further, the interference measurement joint transceiving cycle is composed of a plurality of sub-cycles with equal sizes, wherein one part of the sub-cycles is a transmission cycle in which the user terminal transmits the interference measurement reference signal, and the other part of the sub-cycles is a reception cycle in which the user terminal receives the interference measurement reference signal.
Further, the sub-period is a configuration period of a periodic or semi-persistent interference measurement reference signal.
Further, the number of the user terminal groups which need to perform cross link interference measurement during interaction between networks is n, each user terminal group comprises at least one user terminal, and n is an integer greater than 1;
the interference measurement combined transceiving period comprises n sub-periods, the sending period is m sub-periods in the n sub-periods, the receiving period is the remaining n-m sub-periods, and m is a positive integer smaller than n.
Further, when the non-orthogonal configuration of the reference signal sequence is measured between the user terminal groups, the transmission period of the kth user terminal group is the kth sub-period of the n sub-periods; and when the orthogonal configuration of the reference signal sequence is measured among the user terminal groups, the receiving period of the kth user terminal group is the kth sub-period in the n sub-periods, and k is the number of the user terminal group after the user terminal group is sequenced.
Further, each sub-period is the srs period, and includes t slots, where t is a positive integer.
An embodiment of the present invention further provides a user terminal, as shown in fig. 10, including a processor 41 and a transceiver 42,
the transceiver 42 is configured to receive cross link interference measurement period configuration information sent by a network side, where the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used to notify a user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
In this embodiment, a network side device sends cross link interference measurement period configuration information to a user terminal, where the cross link interference measurement period configuration information is an interference measurement joint transceiving period and is used to notify the user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
Further, the transceiver 42 is specifically configured to receive the cross link interference measurement cycle configuration information sent by the network side through radio resource control RRC signaling.
Further, the interference measurement joint transceiving cycle is composed of a plurality of sub-cycles with equal sizes, wherein one part of the sub-cycles is a transmission cycle in which the user terminal transmits the interference measurement reference signal, and the other part of the sub-cycles is a reception cycle in which the user terminal receives the interference measurement reference signal.
Further, the sub-period is a configuration period of a periodic or semi-persistent interference measurement reference signal.
Further, the number of the user terminal groups which need to perform cross link interference measurement during interaction between networks is n, each user terminal group comprises at least one user terminal, and n is an integer greater than 1;
the interference measurement combined transceiving period comprises n sub-periods, the sending period is m sub-periods in the n sub-periods, the receiving period is the remaining n-m sub-periods, and m is a positive integer smaller than n.
Further, when the non-orthogonal configuration of the reference signal sequence is measured between the user terminal groups, the transmission period of the kth user terminal group is the kth sub-period of the n sub-periods; and when the orthogonal configuration of the reference signal sequence is measured among the user terminal groups, the receiving period of the kth user terminal group is the kth sub-period in the n sub-periods, and k is the number of the user terminal group after the user terminal group is sequenced according to the cell identifier corresponding to the user terminal group.
Further, each sub-period is the srs period, and includes t slots, where t is a positive integer.
The embodiment of the present invention further provides a network side device, as shown in fig. 9, including a processor 31 and a transceiver 32,
the transceiver 32 is configured to send cross link interference measurement cycle configuration information to the ue, where the cross link interference measurement cycle configuration information is used to notify the ue to receive an interference measurement reference signal in a corresponding cycle, and to discard sending of the interference measurement reference signal when the interference measurement cycle and a sending cycle of the interference measurement reference signal collide in a time slot.
In this embodiment, the network side device sends cross link interference measurement period configuration information to the user terminal, where the cross link interference measurement period configuration information is used to notify the user terminal to receive an interference measurement reference signal in a corresponding period, and when the interference measurement period and a transmission period of the interference measurement reference signal collide in a time slot, the network side device abandons transmission of the interference measurement reference signal. Compared with the traditional method, the technical scheme of the invention only needs to exchange the interference measurement reference signal configuration information and the configuration information of the joint transceiving period once between the network side equipment such as the base station when the interference measurement of the long-term cross link is carried out, thereby reducing the signaling overhead and the signaling interaction between the base stations.
Further, the transceiver 32 is specifically configured to send the cross link interference measurement cycle configuration information to the user equipment through radio resource control RRC signaling.
Further, the transmission period of the interference measurement reference signal is a configuration period of a sounding reference signal SRS which is periodic or semi-continuous periodic.
An embodiment of the present invention further provides a user terminal, as shown in fig. 10, including a processor 41 and a transceiver 42,
the transceiver 42 is configured to receive cross link interference measurement period configuration information sent by a network side, where the cross link interference measurement period configuration information is used to notify a user terminal to receive an interference measurement reference signal in a corresponding period, and when the interference measurement period and a transmission period of the interference measurement reference signal collide in a time slot, the transmission of the interference measurement reference signal is abandoned.
In this embodiment, the network side device sends cross link interference measurement period configuration information to the user terminal, where the cross link interference measurement period configuration information is used to notify the user terminal to receive an interference measurement reference signal in a corresponding period, and when the interference measurement period and a transmission period of the interference measurement reference signal collide in a time slot, the network side device abandons transmission of the interference measurement reference signal. Compared with the traditional method, the technical scheme of the invention only needs to exchange the interference measurement reference signal configuration information and the configuration information of the joint transceiving period once between the network side equipment such as the base station when the interference measurement of the long-term cross link is carried out, thereby reducing the signaling overhead and the signaling interaction between the base stations.
Further, the transceiver 42 is specifically configured to receive the cross link interference measurement cycle configuration information sent by the network side through radio resource control RRC signaling.
Further, the transmission period of the interference measurement reference signal is a configuration period of a sounding reference signal SRS which is periodic or semi-continuous periodic.
The embodiment of the invention also provides network side equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor; the processor, when executing the program, implements the cross link interference measurement cycle configuration method as described above.
The embodiment of the invention also provides a user terminal, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor; the processor, when executing the program, implements the cross link interference measurement cycle configuration method as described above.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps in the method for configuring a measurement period of cross link interference measurement as described above.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (43)
1. A method for configuring a cross link interference measurement cycle is applied to a network side, and the method comprises the following steps:
and sending cross link interference measurement period configuration information to the user terminal, wherein the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used for informing the user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
2. The method according to claim 1, wherein the cross link interference measurement cycle configuration information sent to the ue comprises:
and sending the cross link interference measurement period configuration information to the user terminal through Radio Resource Control (RRC) signaling.
3. The method according to claim 1, wherein the interference measurement joint transceiving period comprises a plurality of sub-periods with equal size, wherein one part of the sub-periods is a transmission period during which the ue transmits an interference measurement reference signal, and the other part of the sub-periods is a reception period during which the ue receives the interference measurement reference signal.
4. The method according to claim 1 or 3, wherein the sub-period is a configuration period of a periodic or semi-persistent interference measurement reference signal.
5. The method according to claim 3, wherein the number of the user terminal groups required to perform cross link interference measurement for inter-network interaction is n, each user terminal group includes at least one user terminal, and n is an integer greater than 1;
the interference measurement combined transceiving period comprises n sub-periods, the sending period is m sub-periods in the n sub-periods, the receiving period is the remaining n-m sub-periods, and m is a positive integer smaller than n.
6. The method of claim 5, wherein when the inter-user terminal measurement reference signal sequence non-orthogonal configuration is performed, a transmission period of a kth user terminal group is a kth sub-period of the n sub-periods; and when the orthogonal configuration of the reference signal sequence is measured among the user terminal groups, the receiving period of the kth user terminal group is the kth sub-period in the n sub-periods, and k is the number of the user terminal group after the user terminal group is sequenced.
7. The method according to claim 5, wherein each sub-period is the SRS period and includes t slots, and t is a positive integer.
8. A cross link interference measurement cycle configuration method is applied to a user terminal side, and the method comprises the following steps:
receiving cross link interference measurement period configuration information sent by a network side, wherein the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used for informing a user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
9. The method according to claim 8, wherein the receiving the cross link interference measurement cycle configuration information sent by the network side includes:
and receiving the cross link interference measurement period configuration information sent by the network side through Radio Resource Control (RRC) signaling.
10. The method of claim 8, wherein the interference measurement joint transceiving period comprises a plurality of sub-periods with equal size, wherein one part of the sub-periods is a transmission period during which the ue transmits an interference measurement reference signal, and the other part of the sub-periods is a reception period during which the ue receives the interference measurement reference signal.
11. The method according to claim 8 or 10, wherein the sub-period is a configuration period of a periodic or semi-persistent interference measurement reference signal.
12. The method according to claim 10, wherein the number of the user terminal groups required to perform cross link interference measurement for inter-network interaction is n, each user terminal group includes at least one user terminal, and n is an integer greater than 1;
the interference measurement combined transceiving period comprises n sub-periods, the sending period is m sub-periods in the n sub-periods, the receiving period is the remaining n-m sub-periods, and m is a positive integer smaller than n.
13. The method of claim 12, wherein when the inter-user terminal measurement reference signal sequence non-orthogonal configuration is performed, a transmission period of a kth user terminal group is a kth sub-period of the n sub-periods; and when the orthogonal configuration of the reference signal sequence is measured among the user terminal groups, the receiving period of the kth user terminal group is the kth sub-period in the n sub-periods, and k is the number of the user terminal group after the user terminal group is sequenced according to the cell identifier corresponding to the user terminal group.
14. The method according to claim 12, wherein each sub-period is the srs period and includes t slots, and t is a positive integer.
15. A method for configuring a cross link interference measurement cycle is applied to a network side, and the method comprises the following steps:
and sending cross link interference measurement period configuration information to the user terminal, wherein the cross link interference measurement period configuration information is used for informing the user terminal to receive the interference measurement reference signal in a corresponding period, and abandoning the sending of the interference measurement reference signal when the interference measurement period and the sending period of the interference measurement reference signal conflict in a time slot.
16. The method according to claim 15, wherein the sending cross-link interference measurement cycle configuration information to the ue comprises:
and sending the cross link interference measurement period configuration information to the user terminal through Radio Resource Control (RRC) signaling.
17. The method of claim 15, wherein the transmission period of the interference measurement reference signal is a periodic or semi-persistent periodic Sounding Reference Signal (SRS) configuration period.
18. A cross link interference measurement cycle configuration method is applied to a user terminal side, and the method comprises the following steps:
receiving cross link interference measurement period configuration information sent by a network side, wherein the cross link interference measurement period configuration information is used for informing a user terminal to receive an interference measurement reference signal in a corresponding period, and abandoning the sending of the interference measurement reference signal when the interference measurement period and the sending period of the interference measurement reference signal collide in a time slot.
19. The method according to claim 18, wherein the receiving the cross link interference measurement cycle configuration information sent by the network side includes:
and receiving the cross link interference measurement period configuration information sent by the network side through Radio Resource Control (RRC) signaling.
20. The method of claim 18, wherein the transmission period of the interference measurement reference signal is a periodic or semi-persistent periodic Sounding Reference Signal (SRS) configuration period.
21. A network side device, comprising a transceiver and a processor,
the transceiver is configured to send cross link interference measurement period configuration information to the user terminal, where the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used to notify the user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
22. The network-side device of claim 21,
the transceiver is specifically configured to send the cross link interference measurement cycle configuration information to the user equipment through radio resource control RRC signaling.
23. The network side device of claim 21, wherein the interference measurement joint transceiving period comprises a plurality of sub-periods with equal size, where one part of the sub-periods is a transmission period during which the ue transmits an interference measurement reference signal, and the other part of the sub-periods is a reception period during which the ue receives the interference measurement reference signal.
24. The network-side device of claim 21 or 23, wherein the sub-period is a configuration period of a periodic or semi-persistent interference measurement reference signal.
25. The network-side device of claim 23, wherein the number of the user terminal groups required for performing cross-link interference measurement for inter-network interaction is n, each user terminal group includes at least one user terminal, and n is an integer greater than 1;
the interference measurement combined transceiving period comprises n sub-periods, the sending period is m sub-periods in the n sub-periods, the receiving period is the remaining n-m sub-periods, and m is a positive integer smaller than n.
26. The network-side device of claim 25, wherein when the non-orthogonal configuration of the reference signal sequences is measured between the user terminal groups, a transmission period of a kth user terminal group is a kth sub-period of the n sub-periods; and when the orthogonal configuration of the reference signal sequence is measured among the user terminal groups, the receiving period of the kth user terminal group is the kth sub-period in the n sub-periods, and k is the number of the user terminal group after the user terminal group is sequenced.
27. The network-side device of claim 25, wherein each sub-period is the srs period and includes t slots, and t is a positive integer.
28. A user terminal, comprising a processor and a transceiver,
the transceiver is configured to receive cross link interference measurement period configuration information sent by a network side, where the cross link interference measurement period configuration information refers to an interference measurement joint transceiving period and is used to notify a user terminal to send or receive an interference measurement reference signal in a corresponding sub-period.
29. The user terminal of claim 28,
the transceiver is specifically configured to receive the cross link interference measurement cycle configuration information sent by the network side through radio resource control RRC signaling.
30. The ue of claim 28, wherein the interference measurement joint transceiving period comprises a plurality of sub-periods with equal size, wherein a part of the sub-periods are transmission periods for the ue to transmit the interference measurement reference signal, and another part of the sub-periods are reception periods for the ue to receive the interference measurement reference signal.
31. The ue of claim 28 or 30, wherein the sub-period is a configuration period of a periodic or semi-persistent sir reference signal.
32. The ue of claim 30, wherein the number of ue groups required for inter-network interaction to perform cross-link interference measurement is n, each ue group comprises at least one ue, and n is an integer greater than 1;
the interference measurement combined transceiving period comprises n sub-periods, the sending period is m sub-periods in the n sub-periods, the receiving period is the remaining n-m sub-periods, and m is a positive integer smaller than n.
33. The ue of claim 32, wherein when the non-orthogonal configuration of the reference signal sequences is measured between the ues, a transmission period of a kth ue is a kth sub-period of the n sub-periods; and when the orthogonal configuration of the reference signal sequence is measured among the user terminal groups, the receiving period of the kth user terminal group is the kth sub-period in the n sub-periods, and k is the number of the user terminal group after the user terminal group is sequenced according to the cell identifier corresponding to the user terminal group.
34. The ue of claim 32, wherein each sub-period is the srs period and comprises t slots, and t is a positive integer.
35. A network side device, comprising a processor and a transceiver,
the transceiver is configured to send cross link interference measurement cycle configuration information to the user terminal, where the cross link interference measurement cycle configuration information is used to notify the user terminal to receive an interference measurement reference signal in a corresponding cycle, and to discard transmission of the interference measurement reference signal when the interference measurement cycle collides with a transmission cycle of the interference measurement reference signal in a time slot.
36. The network-side device of claim 35, wherein the transceiver is specifically configured to send the cross-link interference measurement cycle configuration information to the user terminal through Radio Resource Control (RRC) signaling.
37. The network side device of claim 35, wherein the transmission period of the interference measurement reference signal is a periodic or semi-persistent periodic Sounding Reference Signal (SRS) configuration period.
38. A user terminal, comprising a processor and a transceiver,
the transceiver is configured to receive cross link interference measurement period configuration information sent by a network side, where the cross link interference measurement period configuration information is used to notify a user terminal to receive an interference measurement reference signal in a corresponding period, and when the interference measurement period and a transmission period of the interference measurement reference signal collide in a time slot, the transceiver abandons transmission of the interference measurement reference signal.
39. The ue according to claim 38, wherein the transceiver is specifically configured to receive the cross-link interference measurement cycle configuration information sent by the network side through radio resource control RRC signaling.
40. The UE of claim 38, wherein the transmission period of the SRS is a periodic or semi-persistent periodic SRS configuration period.
41. A network-side device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the processor implements the method for configuring a measurement cycle of cross link interference according to any one of claims 1 to 7 or implements the method for configuring a measurement cycle of cross link interference according to any one of claims 15 to 17 when executing the program.
42. A user terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor; wherein the processor implements the method for configuring a measurement cycle of cross link interference according to any one of claims 8 to 14 or implements the method for configuring a measurement cycle of cross link interference according to any one of claims 18 to 20 when executing the program.
43. A computer readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the steps of the method for cross link interference measurement cycle configuration according to any of the claims 1-7 or the steps of the method for cross link interference measurement cycle configuration according to any of the claims 8-14 or the steps of the method for cross link interference measurement cycle configuration according to any of the claims 15-17 or the steps of the method for cross link interference measurement cycle configuration according to any of the claims 18-20.
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