CN113473552B - RRM (radio resource management) measurement method and device - Google Patents

RRM (radio resource management) measurement method and device Download PDF

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Publication number
CN113473552B
CN113473552B CN202010247300.5A CN202010247300A CN113473552B CN 113473552 B CN113473552 B CN 113473552B CN 202010247300 A CN202010247300 A CN 202010247300A CN 113473552 B CN113473552 B CN 113473552B
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relax
cell
target
rrm measurement
signal quality
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CN113473552A (en
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金乐
王洲
邝奕如
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2021/079377 priority patent/WO2021196979A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The embodiment of the application provides a RRM measurement method and RRM measurement equipment, and terminal equipment can flexibly realize the RRM measurement on a first neighbor cell on a high-priority target frequency point in a scene with a low probability of reselecting the first neighbor cell, so that the communication performance of the terminal equipment can be ensured, and the power consumption of the terminal equipment can be saved.

Description

RRM (radio resource management) measurement method and device
Technical Field
The present application relates to the field of communications technologies, and in particular, to a RRM measurement method and apparatus.
Background
In a communication system, due to mobility of a terminal device, in order to ensure service continuity and communication quality of the terminal device, the terminal device generally needs to perform Radio Resource Management (RRM) measurement, so as to implement cell reselection (reselection) and cell handover (handover), thereby changing a resident cell to obtain continuous service. The RRM measurement is a cell measurement, which specifically includes a common-frequency measurement and a different-frequency/different-system measurement.
When the terminal device is in a Radio Resource Control (RRC) idle state (RRC _ idle state for short) and an RRC inactive state (RRC _ inactive state for short), the terminal device switches the cell where the terminal device resides through a cell reselection process.
In order to ensure that the terminal device can implement cell reselection, the base station generally carries reselection configuration information in a system message, where the reselection configuration information may include, but is not limited to, the following reselection configuration parameters: triggering a serving cell signal quality threshold measured by a neighboring cell, a target frequency point (which may include a pilot frequency/pilot system frequency point) reselected by the neighboring cell, a neighboring cell signal quality threshold reselected to the neighboring cell, a neighboring cell list on each target frequency point, priority of each target frequency point, and the like. The above-mentioned reselection configuration information common to the terminal devices within the range of the base station may also be sent by the base station to the specified terminal device for its dedicated reselection configuration information, and at this time, the reselection configuration information may include at least one of the above reselection configuration parameters so as to cover the corresponding reselection configuration parameter configured in the system message. After receiving the reselection configuration information, the terminal device performs RRM measurement and cell reselection according to the reselection configuration parameters therein.
In the process of performing RRM measurement and cell reselection by the terminal device, according to the relative relationship between the priority of the target frequency point configured for the terminal device by the base station in the above manner and the priority of the serving frequency point (the frequency point where the serving cell is located), the terminal device may classify each target frequency point into one of the following three categories:
and the high-priority target frequency point is a target frequency point with a priority higher than that of the service frequency point.
And the target frequency points with the same priority, namely the target frequency points with the priority same as that of the service frequency points.
And the low-priority target frequency point is a target frequency point with the priority lower than that of the service frequency point.
Because the adjacent cells on the target frequency points with high priority can provide better service, the RRM measurement triggering conditions of the cells set by the communication system aiming at different types of target frequency points are different, and the corresponding cell reselection rules set aiming at different types of target frequency points are also different, the terminal equipment can preferentially reselect the adjacent cells on the target frequency points with high priority, and the service quality of the terminal equipment is improved.
It is known that performing the RRM measurement and cell reselection by the terminal device in the RRC idle state and the RRC inactive state is a main source of power consumption, and a concept of relaxing the RRM measurement is introduced in the communication field in order to ensure the communication performance of the terminal device and effectively save the power consumption of the terminal device. In performing the relaxed RRM measurement, the terminal device may reduce the measurement object (e.g., reduce the number of target frequency points, reduce the number of neighboring cells), or reduce the number of RRM measurements (e.g., increase the period of RRM measurements).
Currently, it is specified on the R16 protocol that the terminal device may perform a relaxed RRM measurement when a preset condition is met. However, it is known that when the terminal device performs the relaxed RRM measurement on the neighboring cell on the high-priority target frequency point, the terminal device may not reselect the neighboring cell for a long time, which affects the communication performance of the terminal device.
Disclosure of Invention
The application provides a RRM measurement method and device, which are used for enabling terminal equipment to flexibly implement relaxed RRM measurement on neighboring cells on a high-priority target frequency point, so that the communication performance of the terminal equipment can be ensured, and the power consumption of the terminal equipment can be saved.
In a first aspect, an embodiment of the present application provides an RRM measurement method, where the method includes:
when the terminal equipment determines that at least one of the following conditions is met, performing RRM (radio resource management) relaxation measurement on a first neighboring cell on a high-priority target frequency point:
condition 1: the signal quality of the serving cell measured by the terminal equipment is within a first set time length T speed_ser Is less than a first threshold Td speed_ser ；
Condition 2: the signal quality of the first neighboring cell measured by the terminal equipment is less than a second threshold Td relax_high_c1 (ii) a Wherein the Td relax_high_c1 Less than a signal quality threshold Td for reselection to the first neighbor cell x_high_c1 ；
Condition 3: the signal quality of the first adjacent cell measured by the terminal equipment is within a second set time length T speed_high_c1 Is less than a third threshold Td speed_high_c1 ；
Condition 4: the signal quality of each adjacent cell on the high-priority target frequency point measured by the terminal equipment is less than a fourth threshold Td relax_high_ca 。
By the method, the terminal equipment can flexibly realize the RRM measurement on the first adjacent cell in the scene with lower probability of reselecting the first adjacent cell on the high-priority target frequency point, so that the communication performance of the terminal equipment can be ensured, and the power consumption of the terminal equipment can be saved.
In one possible design, the terminal device may perform the relaxed RRM measurement on the first neighbor cell according to at least one or a combination of:
first detection time delay T detect，relax_high First measurement time delay T measure，relax_high First evaluation time delay T evaluate，relax_high ；
Wherein, T is detect，relax_high The detection time delay T of the high-priority target frequency point is greater than that of the non-relaxed RRM measurement detect，high Said T is measure，relax_high The measurement time delay T of the high-priority target frequency point is larger than that of the non-relaxed RRM measurement measure，high Said T is evaluate，relax_high The evaluation time delay T of the high-priority target frequency point is larger than that of the non-relaxed RRM measurement evaluate，high 。
Through the design, the terminal device can reduce the frequency of measuring the first neighboring cell, and realize the relaxed RRM measurement.
In one possible design, the T detect，relax_high Is said T detect，high Integer multiples of; or, the said measure，relax_high Is said T measure，high Integer multiples of; or, the T is evaluate，relax_high Is said T evaluate，high Integer multiples of.
In one possible design, when the terminal device determines that the signal quality of the serving cell is at the T speed_ser An inner variation smaller than the Td speed_ser And then, the terminal device further performs the relaxed RRM measurement on the second neighboring cell on the equal priority target frequency point or the low priority target frequency point according to at least one or a combination of the following:
second detection time delay T detect，relax Second measurement time delay T measure，relax Second evaluation time delay T evaluate，relax 。
Through the design, the terminal equipment can also execute the RRM (radio resource management) relaxation measurement on the second adjacent region on the target frequency point with the same priority and the target frequency point with the low priority, so that the power consumption of the terminal equipment is reduced as much as possible.
In a second aspect, an embodiment of the present application further provides another RRM measurement method, where the method includes:
the terminal equipment determines that the signal quality of the serving cell is within a signal quality range corresponding to a target adjacent cell; and the terminal equipment executes the relaxed RRM measurement on the target neighbor cell.
By the method, the terminal equipment can judge whether to execute the RRM measurement on the adjacent cell according to the signal quality of the serving cell, so that the terminal equipment can flexibly realize the RRM measurement on the adjacent cell on the target frequency point, thereby ensuring the communication performance of the terminal equipment and saving the power consumption of the terminal equipment.
In one possible design, the performing, by the terminal device, a relaxed RRM measurement on the target neighbor includes:
the terminal equipment performs a relaxed RRM measurement on the target neighbor cell according to at least one of or a combination of the following:
first detection time delay T detect，relax_y First measurement time delay T measure，relax_y And/or the first evaluation delay T evaluate，relax_y ；
Wherein, the T is detect，relax_y The detection time delay T of the target frequency point where the target adjacent cell is located is larger than that of the non-relaxed RRM measurement detect，y Said T is measure，relax_y The measurement time delay T is larger than the measurement time delay T of the target frequency point of the target adjacent cell when the non-relaxed RRM is measured measure，y Said T is evaluate，relax_y The evaluation time delay T is larger than the target frequency point of the target adjacent cell when the non-relaxed RRM is measured evaluate，y 。
In one possible design, the T detect，relax_y Is said T detect，y Integer multiples of; or, the T is measure，relax_y Is said T measure，y Integer multiples of; or, the T is evaluate，relax_y Is said T evaluate，y Integer multiples of.
In one possible design, the terminal device may receive a relaxed RRM measurement configuration parameter for the target neighbor from a base station; and determining a signal quality range corresponding to the target neighbor cell according to the relaxed RRM measurement configuration parameter of the target neighbor cell.
Through the design, the base station can configure the signal quality range of the target adjacent cell.
In one possible design, the relaxed RRM measurement configuration parameters for the target neighbor include: high threshold Td relax，tall_ser And/or a low threshold Td relax，short_ser Wherein, the Td relax，tall_ser Greater than Td relax，short_ser ；
Wherein, when the configuration parameters of the relaxed RRM measurement of the target neighbor cell include the Td relax，tall_ser Then, the signal quality range corresponding to the target neighboring cell includes: greater than Td relax，tall_ser (ii) a When the configuration parameters of the relaxed RRM measurement of the target neighbor cell comprise the Td relax，short_ser Then, the signal quality range corresponding to the target neighboring cell includes: less than Td relax，short_ser 。
In one possible design, the terminal device receives, from a base station, an evaluation reference signal indication corresponding to the target neighbor cell, where the evaluation reference signal indication indicates: q evaluation reference signals used for evaluating whether to perform relaxed RRM measurement on the target neighbor cell are included in the p reference signals of the serving cell, wherein p and q are positive integers, and q is less than or equal to p; the determining, by the terminal device, that the signal quality of the serving cell is within the signal quality range corresponding to the target neighboring cell includes: the terminal equipment determines the signal quality of q evaluation reference signals of the serving cell; the terminal device determines that the signal quality of the q evaluation reference signals is within the signal quality range.
Through the design, the base station can flexibly designate the reference signal in the serving cell as the evaluation reference signal of the target neighbor cell, so that the terminal equipment can flexibly implement the implementation of the relaxed RRM measurement on the neighbor cell on the target frequency point.
In one possible design, the evaluation reference signal is indicated as a bitmap.
In a third aspect, an embodiment of the present application further provides an RRM measurement method, where the method includes:
the terminal equipment determines that the signal quality of any adjacent cell is within a signal quality range corresponding to any adjacent cell aiming at any adjacent cell on any target frequency point; and the terminal equipment executes the relaxed RRM measurement on any adjacent cell.
In one possible design, the performing, by the terminal device, the relaxed RRM measurement on any neighbor includes:
the terminal equipment performs the relaxed RRM measurement on any neighbor cell based on at least one or a combination of the following:
first detection time delay T detect，relax_y First measurement time delay T measure，relax_y First estimated time delay T evaluate，relax_y ；
Wherein, T is detect，relax_y The detection time delay T of the target frequency point is larger than that of the non-relaxed RRM measurement detect，y Said T is measure，relax_y The measurement time delay T of the target frequency point is larger than that of the non-relaxed RRM measurement measure，y Said T is evaluate，relax_y The evaluation time delay T of the target frequency point is larger than that of the non-relaxed RRM measurement evaluate，y 。
In one possible design, the T detect，relax_y Is said T detect，y Integer multiples of; the T is measure，relax_y Is said T measure，y Integer multiples of; the T is evaluate，relax_y Is said T evaluate，y Integer multiples of.
In one possible design, the terminal device may receive a relaxed RRM measurement configuration parameter of any neighbor cell from the base station; and the terminal equipment determines a signal quality range corresponding to any adjacent cell according to the relaxed RRM measurement configuration parameter of any adjacent cell.
In one possible design, the relaxed RRM measurement configuration parameter for any neighbor includes: high threshold Td relax，tall_c1 And/or, a low threshold Td relax，short_c1 Wherein, the Td relax，tall_c1 Greater than Td relax，short_c1 ；
Wherein, when the configuration parameters of the relaxed RRM measurement of any neighboring cell include the Td relax，tall_c1 When the signal quality range corresponding to any adjacent cell is larger than the Td relax，tall_c1 (ii) a When the configuration parameters of the relaxed RRM measurement of any neighboring cell comprise the Td relax，short_c1 When the signal quality range corresponding to any neighbor cell is smaller than the Td relax，short_c1 。
In a fourth aspect, an embodiment of the present application provides an RRM measurement method, where the method includes:
the terminal equipment determines that the signal quality of a serving cell is within a signal quality range corresponding to the serving cell; and the terminal equipment executes the relaxed RRM measurement on each adjacent cell on each target frequency point.
In one possible design, the performing, by the terminal device, the relaxed RRM measurement for each neighbor cell on each target frequency point includes:
the terminal device performs the relaxed RRM measurement on a first neighboring cell on a first target frequency point based on at least one or a combination of the following, where the first target frequency point is any one of the target frequency points, and the first neighboring cell is any one of the neighboring cells on the first target frequency point:
first detection time delay T detect，relax_y First measurement time delay T measure，relax_y First estimated time delay T evaluate，relax_y ；
Wherein, T is detect，relax_y The detection time delay T of the first target frequency point is larger than that of the non-relaxed RRM measurement detect，y Said T is measure，relax_y The measurement time delay T of the first target frequency point is larger than that of the non-relaxed RRM measurement measure，y Said T is evaluate，relax_y The evaluation time delay T of the first target frequency point is larger than that of the non-relaxed RRM measurement evaluate，y 。
In one possible design, the T detect，relax_y Is said T detect，y Integer multiples of; or, the T is measure，relax_y Is said T measure，y Integer multiples of; or, the T is evaluate，relax_y Is said T evaluate，y An integer multiple of.
In one possible design, the terminal device receives a relaxed RRM measurement configuration parameter for the serving cell from a base station; and the terminal equipment determines a signal quality range corresponding to the serving cell according to the relaxed RRM measurement configuration parameters of the serving cell.
In one possible designThe relaxed RRM measurement configuration parameter of the serving cell includes: high threshold Td relax，tall_ser And/or a low threshold Td relax，short_ser Wherein, the Td relax，tall_ser Greater than Td relax，short_ser ；
Wherein, when the configuration parameters of the relaxed RRM measurement of the neighboring cell include the Td relax，tall_ser When the signal quality range corresponding to the adjacent cell is larger than the Td relax，tall_ser (ii) a When the parameters of the measurement configuration of the relaxed RRM of the neighboring cell comprise the Td relax，short_ser When the signal quality range corresponding to the adjacent cell is smaller than the Td relax，short_ser 。
In a fifth aspect, an embodiment of the present application provides an RRM measurement method, including:
the base station determines m measurement reference signals for RRM measurement in n reference signals of a target cell, wherein n and m are positive integers, and m < n; and the base station sends a measurement reference signal indication of the target cell to terminal equipment, wherein the measurement reference signal indication is used for indicating the m measurement reference signals.
Through the design, aiming at each target cell supporting the beamforming technology, the base station can select the measurement reference signal for the terminal equipment to measure from the multiple reference signals, so that the signal quality of the measurement reference signal measured by the terminal equipment can be reflected more accurately, and the cell reselection accuracy of the terminal equipment can be improved.
In one possible design, the measurement reference signal is indicated as a bitmap.
In a sixth aspect, an embodiment of the present application provides an RRM measurement method, where the method includes:
the method comprises the steps that a terminal device receives a measurement reference signal indication of a target cell from a base station, wherein the measurement reference signal indication is used for indicating m measurement reference signals used for RRM measurement in n reference signals of the target cell; and the terminal equipment performs RRM measurement on the m measurement reference signals of the target cell according to the measurement reference signal indication of the target cell to obtain the signal quality of the m measurement reference signals.
In one possible design, the measurement reference signal is indicated as a bitmap.
In a seventh aspect, an embodiment of the present application provides a communication apparatus, including means for performing each step in any one of the above aspects.
In an eighth aspect, an embodiment of the present application provides a communication device, including at least one processing element and at least one storage element, where the at least one storage element is configured to store programs and data, and the at least one processing element is configured to read and execute the programs and data stored by the storage element, so that the method provided in any of the above aspects of the present application is implemented.
In a ninth aspect, an embodiment of the present application provides a communication system, including a base station and a terminal device, where the base station has a function of executing the base station in the method provided in the above aspect of the present application, and the terminal device has a function of executing the terminal device in the method provided in the above aspect of the present application.
In a tenth aspect, embodiments of the present application further provide a computer program, which, when run on a computer, causes the computer to execute the method provided in any one of the above aspects.
In an eleventh aspect, the present application further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by a computer, the computer program causes the computer to execute the method provided in any one of the above aspects.
In a twelfth aspect, an embodiment of the present application further provides a chip, where the chip is configured to read a computer program stored in a memory, and execute the method provided in any of the foregoing aspects.
In a thirteenth aspect, an embodiment of the present application further provides a chip system, where the chip system includes a processor, and is used to support a computer device to implement the method provided in any of the foregoing aspects. In one possible design, the system-on-chip further includes a memory for storing programs and data necessary for the computer device. The chip system may be formed by a chip, and may also include a chip and other discrete devices.
Drawings
Fig. 1 is an architecture diagram of a communication system according to an embodiment of the present application;
fig. 2 is a diagram illustrating an example of a communication scenario provided in an embodiment of the present application;
fig. 3 is a flowchart of an RRM measurement method according to an embodiment of the present invention;
fig. 4A is a flowchart of another RRM measurement method according to an embodiment of the present application;
fig. 4B is a flowchart of another RRM measurement method according to the embodiment of the present application;
fig. 5 is a flowchart of another RRM measurement method according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of a base station supporting beamforming technology transmitting a reference signal according to an embodiment of the present application;
fig. 7 is a flowchart of another RRM measurement method according to an embodiment of the present disclosure;
fig. 8 is a block diagram of a communication device according to an embodiment of the present application;
fig. 9 is a block diagram of a communication device according to an embodiment of the present application.
Detailed Description
The application provides a RRM measurement method and device, which are used for enabling terminal equipment to flexibly implement relaxed RRM measurement on neighboring cells on a high-priority target frequency point, so that the communication performance of the terminal equipment can be ensured, and the power consumption of the terminal equipment can be saved. The method and the device are based on the same technical conception, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.
Hereinafter, some terms in the present application are explained so as to be easily understood by those skilled in the art.
1) A terminal device is a device that provides voice and/or data connectivity to a user. The terminal device may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and so on.
For example, the terminal device may be a handheld device, a vehicle-mounted device, or the like having a wireless connection function. Currently, some examples of terminal devices are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation security), a wireless terminal in city (smart city), a wireless terminal in home (smart home), and the like.
2) And the base station is a device for accessing the terminal device to the wireless network in the communication system. The base station serves as a node in a radio access network, and may also be referred to as a network device, and may also be referred to as a Radio Access Network (RAN) node (or device).
Currently, some examples of base stations are: a gbb, an evolved Node B (eNB), a Transmission Reception Point (TRP), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), or a Base Band Unit (BBU), etc.
In addition, in a network structure, the base station may include a Centralized Unit (CU) node and a Distributed Unit (DU) node. The structure separates the protocol layers of the eNB in a Long Term Evolution (LTE) system, the functions of part of the protocol layers are put in the CU for centralized control, the functions of the rest part or all the protocol layers are distributed in the DU, and the DU is controlled by the CU in a centralized manner.
3) And reselecting configuration information, which is sent to the terminal equipment for the base station, so that the terminal equipment performs RRM measurement, and finally cell reselection is realized according to a measurement result. In general, the base station may transmit reselection configuration information common within a cell through a system message. In addition, the base station may also send reselection configuration information dedicated to the designated terminal device through RRC signaling.
Wherein, the common reselection configuration information may include, but is not limited to, the following reselection configuration parameters:
triggering a serving cell signal quality threshold measured by a neighboring cell;
target frequency points (which may include frequency points of different frequency/different system) reselected in the neighboring cells;
a neighboring cell signal quality threshold reselected to a neighboring cell;
a neighbor list on each target frequency point;
and the priority of each target frequency point and the like.
At least one of the above may be included in the dedicated reselection configuration parameters.
4) And the reference signal is sent by the cell managed by the base station through the base station and is used for enabling the terminal equipment to perform RRM measurement so as to realize the processes of cell reselection, cell switching, beam determination and the like. For example, in the embodiment of the present application, the reference signal may be a Synchronization Signal Block (SSB), a channel state information-reference signal (CSI-RS), or the like.
5) The signal quality may be a measurement result obtained by performing RRM measurement on the cell by the terminal device, and the measurement result may include one or more of the following parameters:
reference Signal Received Power (RSRP), reference Signal Received Quality (RSRQ), signal to noise ratio (SNR), signal to interference plus noise ratio (SINR), and the like.
6) "and/or" describe the association relationship of the associated objects, indicating that there may be three relationships, e.g., a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In the present application, the plural number means two or more.
In addition, it is to be understood that the terms first, second, etc. in the description of the present application are used for distinguishing between the descriptions and not necessarily for describing a sequential or chronological order.
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Fig. 1 illustrates an architecture of a possible communication system for RRM measurement provided by an embodiment of the present application. Referring to fig. 2, a base station and a terminal device are included in the communication system.
The base station provides the terminal device 202 with a radio access related Service through the managed cell, and implements functions of a radio physical layer, resource scheduling and radio resource management, quality of Service (QoS) management, radio access control, and mobility management (e.g., cell reselection and handover).
Wherein each base station is responsible for managing at least one cell. As shown, base station a is responsible for managing cell a, base station B is responsible for managing cell B, and base station C is responsible for managing cell C.
In the communication system, each cell provides access service for the terminal equipment by using the frequency spectrum resources of the corresponding frequency points. It should be noted that, the frequency points used by different cells may be the same or different. In addition, the communication technology used by each cell is not limited in the present application, and the communication technologies used by different cells may be the same or different. Exemplarily, the cells a to G are all LTE cells using 4G communication technology; or the cells a-G are all NR cells using the 5G communication technology; or part of the cells are LTE cells and part of the cells are NR cells.
The terminal equipment is equipment for accessing the network through the cell managed by the base station.
And the base station is connected with the terminal equipment through a Uu interface, so that the communication between the terminal equipment and the base station is realized.
In addition, the architecture shown in fig. 1 may be applied to various communication scenarios, for example, a fifth generation (The 5th generation,5 g) communication system, a future sixth generation communication system and other communication systems that evolve, a Long Term Evolution (LTE) communication system, a vehicle to anything (V2X), a Long Term Evolution-vehicle networking (LTE-V), a vehicle to vehicle (V2V), a vehicle networking, a Machine Type Communication (MTC), an internet of things (IoT), a Long Term Evolution-Machine to Machine (LTE-Machine to Machine, LTE-M), a Machine to Machine (M2M), and so on.
In the communication system shown in fig. 1, due to the mobility of the terminal device, the terminal device may move from the coverage of one cell to the coverage of another cell, and as shown in the figure, the terminal device moves from cell a to cell b, and therefore, the terminal device needs to continuously change the cell where it resides through RRM measurement to ensure the continuity of the service. In order to achieve the above objective, the terminal device in the RRC idle state and the RRC inactive state needs to be implemented through a cell reselection process.
In order to ensure that the terminal device can implement cell reselection, the base station broadcasts common reselection configuration information in the managed cell through a system message. In addition, after the terminal device accesses the base station, the base station may also send dedicated reselection configuration information to the terminal device through an RRC signaling according to actual requirements. The terminal device may determine the following reselection configuration parameters according to reselection configuration information from the base station, and perform RRM measurement and cell reselection based on the determined reselection configuration parameters:
serving cell signal quality threshold Td that triggers neighbor measurements m_ser Target frequency point for reselecting the adjacent cell, and adjacent cell signal quality threshold Td for reselecting the adjacent cell x A neighbor list on each target frequency point and the priority of each target frequency point.
In order to make the cell reselection of the terminal device more flexible, the base station may set different priorities for different target frequency points. For example, the cell at frequency point 1 may have a larger system bandwidth and better signal quality, or may provide a higher transmission rate, such as a hot spot cell, relative to the serving cell of the terminal device. Therefore, in order to improve the service quality of the terminal device, when the base station performs RRM measurement and cell reselection on the frequency point 1, the priority of the frequency point 1 may be set to be higher than the priority of the serving frequency point (the frequency point where the serving cell is located). The system bandwidth, signal quality and transmission rate of the cells on the frequency point 2 may be similar to those of the serving cell, so that when the base station uses the frequency points 2 as target frequency points, the priority of the frequency point 2 can be set to be the same as that of the serving frequency point. In addition, compared with the serving cell, the cell on the frequency point 3 may have a smaller system bandwidth, a poorer signal quality, or a lower transmission rate, so that when the base station uses these frequency points 3 as target frequency points, the priority of the frequency point 3 may be set to be lower than that of the serving frequency point.
Therefore, before RRM measurement, the terminal device may classify each target frequency point into one of three categories according to the relative relationship between the priority of each target frequency point and the priority of the serving frequency point: high priority target frequency point, equal priority target frequency point, low priority target frequency point. And the cell RRM measurement triggering conditions of the terminal equipment for different types of target frequency points are different, and the corresponding cell reselection rules for different types of target frequency points are also different.
Next, the cell RRM measurement triggering conditions of different types of target frequency points will be described.
For the low priority target frequency point or the equal priority target frequency point, when the terminal equipment determines that the signal quality of the service cell is lower than the service cell signal quality threshold Td triggering the neighbor cell measurement m_s And triggering to carry out RRM measurement on the adjacent regions on the target frequency points.
For a high-priority target frequency point, the terminal device may continuously initiate RRM measurement on a neighboring cell on such a target frequency point, regardless of the signal quality of the serving cell. For example, as shown in fig. 2, the current serving cell is cell1, the frequency point is f1, the priorities of the frequency points f2 and f3 are higher than that of f1, and the cell2 and the cell3 are cells on the frequency points f2 and f3, respectively. cell2 and cell1 have similar coverage, while cell3 has small coverage, but is also within the coverage of cell 1. For example:
the cell1 is an LTE cell, the cell2 is an NR cell, and the base station more hopes to provide NR service for the user, so that the priority of the frequency point of the f2 is set to be higher, and the user hoped to reside in the cell1 can be reselected to the cell2 as soon as possible;
cell3 may be a hotspot Cell arranged by the base station, and has a small coverage area but a large Cell bandwidth, and can provide a higher user rate, and the base station sets the frequency point priority of f2 to be higher, and hopes that the terminal can reselect to Cell3 as soon as possible within the coverage area of Cell 3.
As can be seen from the above description, the reason why the RRM measurement is performed by the terminal device on the neighboring cells on the low priority target frequency point and the equal priority target frequency point is to solve the cell coverage problem of the terminal device. As shown in fig. 1, a cell a is a serving cell of a terminal device, and when the terminal device moves to an edge of the cell a, RRM measurement on such frequency-point neighboring cells (cell b, cell c, etc.) is initiated. Therefore, when the terminal moves to the coverage range of the adjacent cell on the frequency point, the terminal equipment can reselect the adjacent cell with better signal quality. The base station sets the high-priority target frequency point, and hopes that the terminal device resides in the neighboring cell of the frequency point so as to provide better service for the terminal device by the neighboring cell.
The cell reselection rules of different types of target frequency points are explained below.
For the adjacent cell on the low-priority target frequency point, when the signal quality of the serving cell is continuously lower than a certain threshold within a period of continuous time and the signal quality of the adjacent cell is continuously higher than the certain threshold, the terminal device reselects the adjacent cell on the low-priority target frequency point.
And for the adjacent cells on the target frequency points with the same priority, sequencing the adjacent cells and the service cell according to the signal quality, and reselecting the adjacent cells on the target frequency points with the same priority, which are ranked continuously higher than the service cell in a period of time, by the terminal equipment.
And for the adjacent cell on the high-priority target frequency point, when the signal quality of the adjacent cell is higher than a certain threshold within a period of continuous time, the terminal equipment reselects the adjacent cell on the high-priority target frequency point.
For each type of priority target frequency point, the protocol respectively specifies delay indexes of RRM measurement and cell reselection, and the following 3 types of delay indexes are mainly adopted:
detecting time delay T detect : when the terminal device detects a new neighbor cell on the target frequency point in the current environment, the terminal device needs to complete the evaluation of whether the neighbor cell meets the reselection condition within the detection time delay.
Measuring time delay T measure : for the detected neighboring cell on the target frequency point, the terminal device needs to perform RRM measurement every other measurement delay.
Evaluating the time delay T evaluate : for the detected neighboring cell on the target frequency point, the terminal device needs to evaluate whether the neighboring cell meets the reselection condition in the evaluation period after performing RRM measurement on the neighboring cell each time.
Therefore, when the terminal device in the RRC idle state and the RRC inactive state meets the cell RRM measurement triggering condition, the terminal device at least needs to detect every other detection delay T detect Carrying out cell detection on the corresponding target frequency point; for the detected adjacent regions, at least every other measurement time delay T measure One measurement is made and after each measurement is completed, at an evaluation delay T evaluate And evaluating whether the neighboring cell meets the corresponding reselection condition. The delay index may also be carried in reselection configuration information and sent to the terminal device by the base station, or may be specified by a protocol.
As can be seen from the above description, in order to reduce the power consumption of the terminal device, the terminal device may enter the RRC idle state and the RRC inactive state. However the terminal device makes RRM measurements and small in this stateZone reselection, is the main source of its power consumption. Therefore, in order to ensure the communication performance of the terminal device and effectively save the power consumption of the terminal device, the concept of relaxing RRM measurement is introduced in the communication field. In performing the relaxed RRM measurement, the terminal device may reduce the measurement object (e.g., reduce the number of target frequency points, reduce the number of neighboring cells to be measured), or reduce the number of RRM measurements (e.g., increase the detection delay T) detect Increasing the measurement delay T measure Or increasing the evaluation delay T evaluate )。
At present, in the R16 protocol, when the terminal device satisfies the following conditions, it is specified that the RRM measurement is implemented in relation to the neighbor cells of all target frequency points:
A. the signal quality change of the serving cell within the set duration 1 does not exceed the set threshold 1. That is, when the terminal device is stationary or moving at a low speed, the signal quality of the serving cell and the neighboring cell is relatively stable, and the serving cell and the neighboring cell are kept within a certain range for a long time, so that the terminal device can perform the relaxed RRM measurement on the neighboring cells of all target frequency points.
B. The signal quality of the serving cell is above a set threshold 2. That is, when the terminal device is not located at the cell edge, the signal quality of the serving cell is high, and stable and good service can be provided for the terminal device, so that the terminal device does not need to reselect to the neighboring cell, and can perform the relaxed RRM measurement on the neighboring cells on all target frequency points.
Obviously, the above conventional method of performing the relaxed RRM measurement may ensure the cell coverage of the terminal device. However, as can be seen from the above description of the high-priority target frequency points, the setting of the high-priority target frequency points is to provide better service for the terminal device, for example, in the scenario shown in fig. 2, if the priority of the frequency points f2 and f3 set by the base station is higher, it is desirable that the base station stays in the cell2 or the cell3 to provide better service, however, when the terminal device is always in the coverage of the serving cell (cell 1) (not at the edge of the cell 1), the terminal device may perform the relaxed RRM measurement on the neighboring cells (including the cell2 and the cell 3) on all the frequency points according to the above method for relaxing the RRM measurement, which may cause that the terminal device cannot reselect to the cell2 and the cell3 for a long time, and eventually affects the communication performance of the terminal device.
In order to enable the terminal device to flexibly implement the relaxed RRM measurement on the neighboring cell on the high-priority target frequency point, so that the communication performance of the terminal device can be ensured and the power consumption of the terminal device can be saved, the embodiment of the present application provides a RRM measurement method. The method can be applied to the communication system shown in fig. 1, and the method provided by the embodiment of the present application is described in detail below with reference to fig. 3.
S301: and the terminal equipment receives reselection configuration information sent by the base station, and performs RRM measurement on adjacent cells and serving cells on all target frequency points according to reselection configuration parameters in the reselection configuration information according to a traditional RRM measurement method.
The reselection configuration parameters comprise information such as at least one target frequency point, a neighbor list on each target frequency point, and the priority of each target frequency point. The reselection configuration parameters may further include a detection delay, a measurement delay, and an evaluation delay corresponding to each target frequency point during non-relaxed RRM measurement, and may further include a detection delay, a measurement delay, and an evaluation delay corresponding to each target frequency point during relaxed RRM measurement.
Before RRM measurement is carried out on adjacent cells on all target frequency points, the terminal equipment classifies each target frequency point, determines a high-priority target frequency point, a same-priority target frequency point and a low-priority target frequency point, and then triggers and starts RRM measurement on the adjacent cells on the target frequency points according to cell RRM measurement triggering conditions corresponding to the different types of target frequency points aiming at the different types of target frequency points to obtain the signal quality of the adjacent cells on the target frequency points.
S302: and when the terminal equipment determines that at least one of the following setting conditions is met, performing the RRM (radio resource management) relaxation measurement on the first neighboring cell on the high-priority target frequency point.
Wherein the performing, by the terminal device, the relaxed RRM measurement on the first neighboring cell includes:
the terminal equipment executes a relaxation RRM measurement on the first neighbor cell according to at least one of the following or combined delay indexes:
first detection time delay T detect，relax_high First measurement time delay T measure，relax_high First evaluation delay T evaluate，relax_high ；
Wherein, T is detect，relax_high >The detection time delay T of the high-priority target frequency point during non-relaxed RRM measurement detect，high Said T is measure，relax_high >The measurement time delay T of the high-priority target frequency point during the non-relaxed RRM measurement measure，high Said T is evaluate，relax_high >The evaluation time delay T of the high-priority target frequency point during the non-relaxed RRM measurement evaluate，high 。
Through the step, the terminal device can reduce the RRM measurement frequency of the first neighboring cell, so that the RRM measurement of the first neighboring cell is relaxed, and the power consumption of the terminal device is saved.
Note that, the T is detect，relax_high The T measure，relax_high And said T evaluate，relax_high The value of (a) may be protocol-specified, or sent to the terminal device by the base station through reselection configuration information or an RRC message.
For example, any one of the three latency indicators for relaxing RRM measurements above may be a preset length of time. For example, the T measure，relax_high May be set to a specific value of 5 minutes or 6 minutes.
For example, any of the three latency indicators used for relaxed RRM measurements above may be an integer multiple of its corresponding latency indicator for non-relaxed RRM measurements. For example, the T detect，relax_high Can be said T detect，high Integer multiples of; the described measure，relax_high May be said T measure，high Integer multiples of; said T is evaluate，relax_high May be said T evaluate，high Integer multiples of.
The setting conditions are specifically described below, and optionally, the conditions may be, but are not limited to, the following items:
condition 1: the signal quality of the serving cell is in a first set time length T speed_ser Is smaller than a first threshold Td speed_ser . Under the condition, the first adjacent cell is any adjacent cell or all adjacent cells on the high-priority target frequency point.
When the condition 1 is met, the terminal equipment is in a static state or the moving speed is low, the signal quality of the serving cell is stable, and similarly, the signal quality of the neighbor cell of the terminal equipment is also stable, so that the probability of cell reselection of the terminal equipment is low, and the RRM measurement can be relaxed on the neighbor cell on the high-priority target frequency point, so that the communication performance of the terminal equipment can be ensured, and the power consumption of the terminal equipment can be saved.
It should be noted that, in a scenario that satisfies condition 1, the terminal device may also perform the relaxed RRM measurement on the second neighboring cell on the equal priority target frequency point and the low priority target frequency point. The terminal device may perform the relaxed RRM measurement on the second neighboring cell in a conventional manner, for example, reduce the number of equal priority target frequency points and low priority target frequency points, reduce the number of the second neighboring cell, or reduce the RRM measurement frequency of the second neighboring cell.
It should be noted that, in this embodiment of the present application, a manner of performing the relaxed RRM measurement on the first neighboring cell by the terminal device is different from a specific implementation manner of performing the relaxed RRM measurement on the second neighboring cell.
For example, the terminal device may perform the relaxed RRM measurement on the second neighboring cell according to at least one of the following or a combination of delay indicators:
second detection delay T detect，relax Second measurement time delay T measure，relax The second evaluation delay T evaluate，relax (ii) a Wherein, T is detect，relax_high Less than or equal to the T detect，relax Said T is measure，relax_high Less than or equal to T measure，relax Said T is evaluate，relax_high Is less than or equal toT is described evaluate，relax 。
As can be seen from the above description, although the terminal device performs the relaxed RRM measurement on both the first neighboring cell and the second neighboring cell, the frequency of the measurement performed by the terminal device on the first neighboring cell is higher than the frequency of the measurement performed on the second neighboring cell. Therefore, the probability that the terminal equipment reselects the first neighbor cell can be improved, and the communication performance of the terminal equipment can be ensured.
Condition 2: the signal quality of the first neighbor cell measured by the terminal equipment is less than a second threshold Td relax_high_c1 (ii) a Wherein the Td relax_high_c1 <A signal quality threshold Td reselected to the first neighbor cell x_high_c1 。
When condition 2 is met, it is indicated that the signal quality of the first neighboring cell is poor, and at this time, the terminal device may be located at the edge of the first neighboring cell or outside the coverage area, so that the terminal device is almost impossible to reselect the first neighboring cell, and therefore the terminal device may directly perform the relaxed RRM measurement on the first neighboring cell, thereby saving the power consumption of the terminal device.
Condition 3: the signal quality of the first adjacent cell measured by the terminal equipment is within a second set time length T speed_high_c1 Is less than a third threshold Td speed_high_c1 . Optionally, the T speed_high_c1 Can be reacted with T speed_ser The values are the same, the Td speed_high_c1 May be compared with Td speed_ser The values are the same.
Similar to the scenario corresponding to the condition 1, when the condition 3 is satisfied, it indicates that the terminal device is in a stationary state or has a low moving speed, and at this time, the signal quality of the serving cell and the signal quality of the neighboring cell are both relatively stable, so that the probability of cell reselection of the terminal device is low. Therefore, the RRM measurement can be relaxed on the neighbor cell on the high-priority target frequency point, so that the communication performance of the terminal equipment can be ensured, and the power consumption of the terminal equipment can be saved. In addition, the terminal device may directly determine whether to perform the RRM measurement on the first neighboring cell according to the change in the signal quality of the first neighboring cell, so that the determination result may be more accurate.
Condition 4: the signal quality of each adjacent cell on the high-priority target frequency point measured by the terminal equipment is less than a fourth threshold Td relax_high_ca . Under the condition, the first adjacent cell is any adjacent cell or all adjacent cells on the high-priority target frequency point. Optionally, the Td relax_high_ca May be compared with the second threshold Td in the condition 2 relax_high_c1 The values are the same.
Similar to the condition 2, it indicates that the signal quality of all the neighboring cells on the high-priority target frequency point is poor, and therefore, the terminal device is almost impossible to reselect the neighboring cells on the high-priority target frequency point, and therefore, the terminal device can directly perform the RRM measurement on the first neighboring cell, so that the power consumption of the terminal device can be saved.
In one mode, under the condition 4, the terminal device may detect the delay T according to the first detection delay T detect，relax_high And performing a relaxed RRM measurement for the first neighbor cell. The other delay index used by the terminal device may be a first measurement delay T set for relaxed RRM measurement measure，relax_high First evaluation delay T evaluate，relax_high Or T set for non-relaxed RRM measurements measure，high 、T evaluate，high 。
By the RRM measuring method provided by the embodiment of the application, the terminal equipment can flexibly realize the RRM measurement on the first adjacent cell in the scene with lower probability of reselecting the first adjacent cell on the high-priority target frequency point, so that the communication performance of the terminal equipment can be ensured, and the power consumption of the terminal equipment can be saved.
In order to enable the terminal device to flexibly implement the relaxed RRM measurement on the neighboring cell on the target frequency point, so that the communication performance of the terminal device can be ensured and the power consumption of the terminal device can be saved, the embodiment of the present application provides a RRM measurement method. The method may be applied to the communication system shown in fig. 1, and the method provided by the embodiment of the present application is described in detail below with reference to fig. 4A.
S401a: and the terminal equipment receives reselection configuration information sent by the base station, and performs RRM measurement on adjacent cells and serving cells on all target frequency points according to reselection configuration parameters in the reselection configuration information according to a traditional RRM measurement method.
For a specific process, reference may be made to the description in S301 in the embodiment shown in fig. 3, which is not described herein again.
S402a: and when the terminal equipment determines that the signal quality of the serving cell is within the signal quality range corresponding to the target neighbor cell, performing relaxed RRM measurement on the target neighbor cell.
It should be noted that, in this embodiment of the present application, the terminal device may perform the above-mentioned steps for any neighboring cell on any type of target frequency point among a high-priority target frequency point, an equal-priority target frequency point, and a low-priority target frequency point, or perform the above-mentioned steps for each neighboring cell on each target frequency point, or perform the above-mentioned steps for each neighboring cell on a part of target frequency points, or perform the above-mentioned steps for a part of neighboring cells on any target frequency point, which is not limited in this application.
The method for performing the relaxed RRM measurement on the target neighboring cell by the terminal device is the same as the method for performing the relaxed RRM measurement on the first neighboring cell by the terminal device in S302 in the embodiment shown in fig. 3, that is, the measurement frequency of the terminal device on the target neighboring cell is reduced by increasing the detection delay, the measurement delay, or the evaluation delay of the target neighboring cell. The terminal device may specifically implement the relaxed RRM measurement of the target neighbor by the following steps:
the terminal device may perform a relaxation RRM measurement on the neighboring cell according to at least one of the following or a combined delay indicator:
first detection time delay T detect，relax_y First measurement time delay T measure，relax_y And/or the first evaluation delay T evaluate，relax_y (ii) a Wherein, the T is detect，relax_y >The detection time delay T of the target frequency point during the non-relaxed RRM measurement detect，y Said T is measure，relax_y >Of said target frequency points during non-relaxed RRM measurementsMeasuring time delay T measure，y Said T is evaluate，relax_y >The evaluation time delay T of the target frequency point during the non-relaxed RRM measurement evaluate，y 。
For example, any of the three latency indicators for relaxing RRM measurements above may be a preset length of time. E.g. the T measure，relax_y It may be set to a specific value such as 7 minutes or 8 minutes.
Illustratively, any of the three latency indicators used for relaxed RRM measurements above may be an integer multiple of its corresponding latency indicator at non-relaxed RRM measurements. For example, the T detect，relax_y Is said T detect，y Integer multiples of; said T is measure，relax_y Is said T measure，y Integer multiples of; said T is evaluate，relax_y Is said T evaluate，y Integer multiples of.
The values of the three indexes for relaxing RRM measurement may be specified by a protocol, or may be sent to the terminal device by the base station through reselection configuration information or an RRC message.
In an embodiment, the terminal device may determine the signal quality range corresponding to the target neighboring cell by:
the terminal equipment receives a relaxed RRM measurement configuration parameter of the target neighbor cell from a base station;
and the terminal equipment determines a signal quality range corresponding to the target neighbor cell according to the relaxed RRM measurement configuration parameter of the target neighbor cell.
Optionally, the relaxed RRM measurement configuration parameter of the target neighboring cell includes a high threshold Td relax，tall_ser And/or a low threshold Td relax，short_ser (ii) a Wherein, when the configuration parameters of the relaxed RRM measurement of the target neighbor cell include the Td relax，tall_ser Then, the signal quality range corresponding to the target neighboring cell includes: greater than Td relax，tall_ser (ii) a When the configuration parameters of the relaxed RRM measurement of the target neighbor cell comprise the Td relax，short_ser Then, the signal quality range corresponding to the target neighboring cell includes: less than the Td relax，short_ser 。
Note that, the Td relax，tall_ser May be greater than a serving cell signal quality threshold Td that triggers neighbor measurements m_ser 。
For example, the relaxed RRM measurement configuration parameter of the target neighboring cell may be carried in reselection configuration information or an RRC message and sent by the base station to the terminal device.
Optionally, the relaxed RRM measurement configuration parameter of the target neighboring cell may be determined by the base station according to the coverage areas of the target neighboring cell and the serving cell, or the base station according to the position of the base station and the position of the base station that manages the target neighboring cell. In other words, when the terminal device measures the signal quality of the serving cell and the signal quality range of the target neighboring cell, it indicates that the location of the terminal device is at the edge of the coverage area of the target neighboring cell, and the probability of reselecting the target neighboring cell by the cell is low. Therefore, the terminal device does not need to continuously and frequently measure the target neighbor cell, and the terminal device performs the RRM relaxation measurement on the target neighbor cell, so that the power consumption of the terminal device can be reduced.
In this embodiment, the terminal device may determine whether to perform the relaxed RRM measurement on the target neighboring cell according to the signal quality of the serving cell. When a base station managing the serving cell in a communication system uses beamforming technology, the serving cell may support transmission of multiple reference signals, for example, as shown in fig. 6. In an embodiment, the base station may determine, for the target neighboring cell, q evaluation reference signals from p reference signals of the serving cell, so that the terminal device may accurately determine whether to perform the relaxed RRM measurement on the target neighboring cell according to signal quality of the q evaluation reference signals, specifically including:
a. and the base station selects the q evaluation reference signals from the p reference signals of the serving cell aiming at the target neighbor cell. The base station may determine q evaluation reference signals of the target neighboring cell from the p reference signals by multiple methods. Illustratively, the base station may determine the q evaluation reference signals according to at least one or a combination of: the coverage area of the serving cell, the location of the base station managing the serving cell, the coverage area of the target neighboring cell, the location of the base station managing the target neighboring cell, and the direction of the beam transmitting the p reference signals. For another example, the base station randomly selects the q evaluation reference signals among the p reference signals.
b. And the base station sends an evaluation reference signal indication of the target cell to the terminal equipment, wherein the evaluation reference signal indication is used for indicating the q evaluation reference signals. The terminal device receives an evaluation reference signal indication of the target cell from the base station.
Through the implementation mode, the base station can perform more precise RRM relaxation measurement judgment on the adjacent cells in different beam directions by using the beam direction information of the reference signal of the serving cell, so that the accuracy of performing RRM relaxation measurement on the target adjacent cell by judgment is ensured to be improved, and finally the communication performance of the terminal equipment can be ensured and the power consumption of the terminal equipment can be reduced.
In this embodiment, when executing S402a, the determining, by the terminal device, that the signal quality of the serving cell is within the signal quality range corresponding to the target neighboring cell includes:
the terminal equipment determines the signal quality of q evaluation reference signals of the serving cell;
the terminal equipment determines that the signal quality of the q evaluation reference signals is within the signal quality range.
Through the above description, the signal quality range corresponding to the target neighboring cell may include two sub-ranges: greater than the high threshold Td relax，tall_ser Less than the low threshold Td relax，short_ser . In order to improve the accuracy of the terminal device determining to perform the relaxed RRM measurement, in this embodiment, the determining, by the terminal device, that the signal qualities of the q evaluation reference signals are within the signal quality range includes: the terminal equipment determines that the signal quality of the q evaluation reference signals is all in the signal qualityThe range of amounts includes a subrange.
In one embodiment, the evaluation reference signal indication may be a bitmap (bitmap).
In one scenario, when the reference signal sent by the target cell is an SSB, the length of the bitmap is the maximum number of SSBs supported by a frequency point (service frequency point) where the service cell is located, which is specified by a protocol, for example, 4 bits, 8 bits, or 64 bits. The code of the bitmap is as follows:
Figure BDA0002434287310000141
each bit in the bitmap may represent an SSB, e.g., whether the first bit in the bitmap represents an SSB with index number 0 is an evaluation reference signal. The terminal device can judge whether the SSB represented by each bit is an evaluation reference signal by the value of the bit. For example, a bit i having a value of "0" indicates that the SSB with index i is not an evaluation reference signal, and a bit i having a value of "1" indicates that the SSB with index i is an evaluation reference signal.
For example, in the scenario shown in fig. 2, the serving cell of the terminal device is cell1, and the frequency point where cell1 is located is f1. The cell2 and the cell3 are pilot frequency adjacent cells of the cell1, and the frequency points are f2 and f3 respectively. The frequency point f1 can support to transmit 8 SSBs at most, and the base station managing the cell1 configures 7 SSBs for the cell1, and transmits the SSBs in 7 different beam directions.
The base station managing cell1 selects SSB0-SSB6 of cell1 as the evaluation reference signal of cell2, then sends the evaluation reference signal indication of cell 2-SSB-toevaaluate =11111110 to the terminal device, and configures the relaxed RRM measurement configuration parameter of cell2 to be the low threshold Td relax，short_cell2 . Thus, when the terminal device measures that the signal quality of the reference signals SSB0-SSB6 of cell1 is below Td relax，short_cell2 When this happens, a relaxed RRM measurement is performed for cell 2.
The base station managing cell1 selects SSB4-SSB6 of cell1 as the evaluation reference signal of cell3, and then sends the evaluation reference signal toThe terminal device transmits an evaluation reference signal indication ssb-ToEvaluate =00001110 of the cell3 and configures a relaxed RRM measurement configuration parameter of the cell3 including a high threshold Td relax，tall_cell3 And a low threshold Td relax，short_cell3 . In this way, when the terminal device measures that the signal quality of the reference signals SSB4-SSB6 of the cell1 is lower than that of other SSBs, or when the signal quality of the reference signals SSB4-SSB6 of the cell1 is greater than the high threshold Td relax，tall_cell3 (or both are less than the lower threshold Td relax，short_cell3 ) The terminal device performs a relaxed RRM measurement on cell 3.
In another scenario, when the reference signal sent by the serving cell is a CSI-RS, the length of the bitmap may be the maximum number of CSI-RSs supported by the protocol for RRM measurement. Each bit represents one CSI-RS, e.g., the first bit in the bit map represents a CSI-RS with ID 0, and bit i represents a CSI-RS with ID i. The terminal equipment can judge whether the CSI-RS represented by the bit is an evaluation reference signal or not through the value of the bit. For example, a bit i with a value of "0" indicates that the CSI-RS with ID i is not an evaluation reference signal, and a bit i with a value of "1" indicates that the CSI-RS with ID i is an evaluation reference signal.
By the RRM measurement method provided by the embodiment of the application, when the signal quality of the serving cell is determined to be within the signal quality range corresponding to the signal quality of any neighbor cell, the terminal device can determine to perform the RRM measurement on the neighbor cell, so that the power consumption of the terminal device can be saved. In addition, the terminal device can determine whether to execute the relaxed RRM measurement by using the neighboring cells as the granularity through the method, and can flexibly implement the relaxed RRM measurement for each neighboring cell, thereby not only ensuring the communication performance of the terminal device but also saving the power consumption of the terminal device.
In order to enable the terminal device to flexibly implement relaxed RRM measurement on the neighboring cell on the target frequency point, so that the communication performance of the terminal device may be ensured and the power consumption of the terminal device may be saved, the embodiment of the present application provides a RRM measurement method. The method may be applied to the communication system shown in fig. 1, and the method provided by the embodiment of the present application is described in detail below with reference to fig. 4B.
S401b: and the terminal equipment receives reselection configuration information sent by the base station, and performs RRM measurement on adjacent cells and serving cells on all target frequency points according to reselection configuration parameters in the reselection configuration information according to a traditional RRM measurement method.
For a specific process, reference may be made to the description in S301 in the embodiment shown in fig. 3, which is not described herein again.
S402b: and when the terminal equipment determines that the signal quality of any adjacent cell on any target frequency point is within the signal quality range corresponding to the adjacent cell, the terminal equipment performs the relaxed RRM measurement on the adjacent cell.
It should be noted that, in the embodiment of the present application, the terminal device may perform the above steps for any type of target frequency point among a high-priority target frequency point, an equal-priority target frequency point, and a low-priority target frequency point.
The method for performing the RRM measurement on the neighboring cell by the terminal device is the same as the method for performing the RRM measurement on the first neighboring cell by the terminal device in S302 in the embodiment shown in fig. 3, that is, the frequency for performing the measurement on the neighboring cell by the terminal device is reduced by increasing the detection delay, the measurement delay, or the evaluation delay of the neighboring cell. The terminal device may specifically implement the relaxed RRM measurement for the neighboring cell by the following steps:
the terminal device may perform a relaxation RRM measurement on the neighboring cell according to at least one of the following or a combined delay indicator:
first detection time delay T detect，relax_y First measurement time delay T measure，relax_y And/or the first evaluation delay T evaluate，relax_y (ii) a Wherein, the T is detect，relax_y >The detection time delay T of the target frequency point during the non-relaxed RRM measurement detect，y Said T is measure，relax_y >The measurement time delay T of the target frequency point during the non-relaxed RRM measurement measure，y Said T is evaluate，relax_y >The evaluation time delay T of the target frequency point during the non-relaxed RRM measurement evaluate，y 。
For example, any of the three latency indicators for relaxing RRM measurements above may be a preset length of time. Such as the T measure，relax_y It may be set to a specific value such as 7 minutes or 8 minutes.
Illustratively, any of the three latency indicators used for relaxed RRM measurements above may be an integer multiple of its corresponding latency indicator for non-relaxed RRM measurements. For example, the T detect，relax_y Is said T detect，y Integer multiples of; said T is measure，relax_y Is said T measure，y Integer multiples of; the T is evaluate，relax_y Is said T evaluate，y An integer multiple of.
The values of the three indexes for relaxing RRM measurement may be specified by a protocol, or may be sent to the terminal device by the base station through reselection configuration information or an RRC message.
In an embodiment, the terminal device may determine the signal quality range corresponding to the neighboring cell by:
the terminal equipment receives a relaxed RRM measurement configuration parameter of the neighboring cell from a base station;
and the terminal equipment determines a signal quality range corresponding to the neighbor cell according to the relaxed RRM measurement configuration parameters of the neighbor cell.
Optionally, the configuration parameters for the relaxed RRM measurement of the neighboring cell include a high threshold Td relax，tall_c1 And/or, a low threshold Td relax，short_c1 (ii) a Wherein, when the parameters of the measurement configuration of the relaxed RRM of the neighboring cell include the Td relax，tall_c1 Then, the signal quality range corresponding to the neighboring cell includes: greater than Td relax，tall_c1 (ii) a When the configuration parameters of the relaxed RRM measurement of the neighboring cell comprise the Td relax，short_c1 Then, the signal quality range corresponding to the neighboring cell includes: less than the Td relax，short_c1 。
Note that, the Td relax，tall_c1 May be greater than or equal to a signal quality threshold Td for reselection to the neighbor cell x，c1 (ii) a The T isd relax，short_c1 Less than Td x，c1 。
For example, the relaxed RRM measurement configuration parameter of the neighboring cell may be carried in reselection configuration information or an RRC message and sent to the terminal device by the base station.
Through the steps, the base station sets a high threshold so that the terminal equipment performs relaxation measurement on the adjacent cell when the signal quality of the adjacent cell measured by the terminal equipment is greater than the high threshold. Because the signal quality of the adjacent cell measured by the terminal device is greater than the high threshold, the probability that the terminal device reselects the adjacent cell at this time is higher, and then the terminal device does not need to continuously and frequently measure the adjacent cell subsequently after reselecting the adjacent cell. Therefore, the method can reduce the power consumption of the terminal equipment by setting the high threshold.
On the contrary, the base station sets a low threshold, so that the terminal device performs the relaxation measurement when measuring that the signal quality of the neighboring cell is less than the low threshold. Because the signal quality of the neighboring cell measured by the terminal device is less than the low threshold, the probability that the terminal device reselects the neighboring cell within a long time is low, and therefore the neighboring cell does not need to be measured continuously and frequently. In summary, the method can reduce the power consumption of the terminal device by setting a low threshold.
By the RRM measurement method provided in the embodiment of the present application, when the signal quality of any neighbor cell is within the signal quality range corresponding to the neighbor cell, the terminal device determines that the probability of subsequently reselecting the neighbor cell is low, and therefore, the RRM measurement can be relaxed for the neighbor cell, so that the power consumption of the terminal device can be saved. In addition, the terminal device can determine whether to execute the relaxed RRM measurement by using the neighboring cells as the granularity through the method, and can flexibly implement the relaxed RRM measurement for each neighboring cell, thereby not only ensuring the communication performance of the terminal device but also saving the power consumption of the terminal device.
In order to enable the terminal device to flexibly implement relaxed RRM measurement on the neighboring cell on the target frequency point, so that the communication performance of the terminal device may be ensured and the power consumption of the terminal device may be saved, the embodiment of the present application provides a RRM measurement method. The method may be adapted to the communication system shown in fig. 1, and the method provided in the embodiment of the present application is described in detail below with reference to fig. 5.
S501: and the terminal equipment receives reselection configuration information sent by the base station, and performs RRM measurement on adjacent cells and serving cells on all target frequency points according to reselection configuration parameters in the reselection configuration information according to a traditional RRM measurement method.
The specific process may refer to the description in S301 in the embodiment shown in fig. 3, and is not described herein again.
S502: and when the terminal equipment determines that the signal quality of the serving cell is within the signal quality range corresponding to the serving cell, performing the relaxed RRM measurement on each adjacent cell on each target frequency point.
In this embodiment of the present application, the terminal device may further reduce the measurement frequency of each neighboring cell by increasing the detection delay, the measurement delay, and the evaluation delay of the neighboring cell, and the specific process may refer to specific description of performing the RRM measurement on the neighboring cell in the embodiment shown in fig. 4A or fig. 4B, which is not described herein again.
In one embodiment, the terminal device may determine the signal quality range of the serving cell by:
the terminal device receiving a relaxed RRM measurement configuration parameter of the serving cell from a base station;
and the terminal equipment determines a signal quality range corresponding to the serving cell according to the relaxed RRM measurement configuration parameters of the serving cell.
Optionally, the relaxed RRM measurement configuration parameter of the serving cell includes: high threshold Td relax，tall_ser And/or a low threshold Td relax，short_ser (ii) a Wherein when the parameters of the serving cell for the relaxed RRM measurement configuration include the Td relax，tall_ser Then, the signal quality range corresponding to the serving cell includes: greater than Td relax，tall_ser (ii) a When the relaxed RRM measurement configuration parameters of the serving cell include the Td relax，short_ser When the service is smallThe signal quality range corresponding to the region includes: less than the Td relax，short_ser 。
Note that, the Td relax，tall_ser May be greater than a serving cell signal quality threshold triggering neighbor cell measurements, and the low threshold Td relax，short_ser Less than Td relax，tall_ser 。
For example, the relaxed RRM measurement configuration parameter of the serving cell may be carried in reselection configuration information or an RRC message and sent by the base station to the terminal device. Through the steps, the base station sets the high threshold so that the terminal equipment performs relaxed measurement on all the adjacent cells when the signal quality of the serving cell is measured to be greater than the high threshold. Because the signal quality of the serving cell measured by the terminal device is greater than the high threshold, the signal quality of the current serving cell is stable, the probability of cell reselection of the terminal device is low, and the neighbor cell does not need to be measured frequently. Therefore, the method can perform the relaxed RRM measurement on all the neighboring cells by setting the high threshold, so that the power consumption of the terminal device can be reduced.
Conversely, the base station sets a low threshold so that the terminal device performs a relaxation measurement when it measures that the signal quality of the serving cell is below the low threshold. Because the signal quality of the serving cell measured by the terminal device is less than the low threshold, the probability that the terminal device reselects the neighboring cell is high, and then after the terminal device reselects the neighboring cell, it is not necessary to continuously and frequently measure all the neighboring cells. Therefore, the method can reduce the power consumption of the terminal equipment by setting the low threshold. By the RRM measuring method provided by the embodiment of the application, when the signal quality of the service cell is in the signal quality range corresponding to the service cell, the terminal equipment determines that the probability of subsequent cell reselection is low, so that the terminal equipment can perform RRM measurement on all adjacent cells in a relaxing mode, and the power consumption of the terminal equipment can be saved. In addition, the terminal equipment judges whether to execute the relaxed RRM measurement on all the adjacent cells or not through the signal quality of the serving cell by the method, and the relaxed RRM measurement on the adjacent cells can be flexibly realized, so that the communication performance of the terminal equipment can be ensured, and the power consumption of the terminal equipment can be saved.
With the development of large-scale antenna technology, in order to meet the requirements of users on the transmission rate, the system capacity, and the like of the communication system, a beam forming technology may be introduced into the communication system shown in fig. 1. Beamforming is a signal preprocessing technique based on an antenna array, and generates a directional beam by adjusting a weighting system of each array source in the antenna array, so as to obtain an obvious transmission gain. As shown in fig. 6, the base station may have 8 beams in different directions and transmit signals through the beams. Thus, in the embodiments shown in fig. 3-5, a base station managing a serving cell or any neighbor cell may transmit multiple reference signals through multiple beams, where one beam corresponds to one reference signal. As shown in fig. 6, the base station may transmit SSBs 0-SSBs 7 via beams 0-7, respectively.
In a communication system scenario supporting a beamforming technology, it is obvious that after performing RRM measurement on a serving cell or a neighboring cell, the terminal device may obtain signal qualities of multiple reference signals of the cell. Currently, the terminal device generally uses an average value of the measured signal qualities of a plurality of reference signals as the signal quality of the cell. The cell signal quality determined by the method does not utilize the beam direction information of the reference signal, and the RRM measurement judgment can not be more finely relaxed on the adjacent cells positioned in different beam directions, so that the RRM measurement can not be relaxed at the position far away from the coverage of the adjacent cells, and the power consumption of the terminal equipment is wasted. Based on this, the present application also provides an RRM measurement method, and the flow of the method is described in detail below with reference to the flowchart shown in fig. 7.
S701: for a target cell to be measured supporting a beamforming technology, a base station determines m measurement reference signals for RRM measurement in n reference signals of the target cell, wherein n and m are positive integers, and m < n.
Wherein the base station may determine the at least one sounding reference signal among the n reference signals through a plurality of methods. For example, the base station may determine the m target reference signals according to the coverage of the target cell, the position of the base station managing the target cell, and the direction of the beam transmitting the n reference signals. For another example, the base station randomly selects the m sounding reference signals among the n reference signals.
It should be noted that the target cell may be a serving cell of the terminal device, or a neighboring cell on any target frequency point, which is not limited in this application. The base station is a base station managing the serving cell.
S702: and the base station sends a measurement reference signal indication of the target cell to terminal equipment, wherein the measurement reference signal indication is used for indicating the m measurement reference signals. The terminal equipment receives a measurement reference signal indication of the target cell from the base station.
Optionally, the measurement reference signal indication of the target cell may be carried in reselection configuration information or an RRC message.
S703: and when the terminal equipment performs RRM measurement on the target cell, the m measurement reference signals of the target cell are measured according to the measurement reference signal indication, so as to obtain the signal quality of the m measurement reference signals.
After obtaining the signal qualities of the m sounding reference signals, the terminal device may determine the signal quality of the target cell according to the signal qualities of the m sounding reference signals. By the method, the base station appoints the measurement reference signal for RRM measurement for each cell supporting the beamforming technology, so that the flexibility of determining the signal quality of the cell is improved.
For example, in this embodiment, the terminal device may use the signal qualities of the m sounding reference signals as the signal quality of the target cell. Thus, in the above embodiment, when the terminal device determines whether to perform the RRM relaxation measurement, trigger the RRM measurement on the neighboring cell, and determine whether to perform the cell reselection according to whether the signal quality of the target cell satisfies the corresponding condition, it may be determined whether the signal quality of each of the m measurement reference signals satisfies the corresponding condition.
For example, in the embodiment shown in fig. 3, the terminal device determines that the measured signal quality of the serving cell is T speed_ser The variation amount of the inner layer is less than Td speed_ser The method comprises the following steps:
the terminal equipment determines that the measured signal quality of each of the m measurement reference signals of the serving cell is at the T speed_ser All the variation amounts are less than Td speed_ser 。
For another example, in the embodiment shown in fig. 4B, when determining that the signal quality of any neighboring cell is within the signal quality range corresponding to the neighboring cell, the terminal device includes:
and the terminal equipment determines that the measured signal quality of each of the m measurement reference signals of the neighbor cell is within the signal quality range corresponding to the neighbor cell.
It should be further noted that, in the embodiments shown in fig. 4B and fig. 5, the signal quality range corresponding to the serving cell or the neighboring cell may include two sub-ranges: greater than a high threshold Td relax，tall Less than the lower threshold Td relax，short . In order to improve the accuracy of the terminal device determining to perform the relaxed RRM measurement, in this embodiment, when determining that the signal quality of each sounding reference signal of the target cell is within the signal quality range corresponding to the target cell, the signal quality of each sounding reference signal of the target cell may be:
and the terminal equipment determines that the signal quality of each of the m measurement reference signals of the target cell is in a sub-range included in the signal quality range corresponding to the target cell.
Continuing with the example in fig. 4B, the terminal device determines that the signal quality of each of the m sounding reference signals of the neighboring cell is less than the lower threshold Td relax，short_c1 And when the neighbor cell is detected, performing the relaxed RRM measurement on the neighbor cell. The terminal equipment determines the signal quality of each measurement reference signal in m measurement reference signals of the adjacent regionAll quantities are greater than a high threshold Td relax，tall_c1 And then, the terminal equipment performs the relaxed RRM measurement on the neighboring cell.
It should be noted that, a base station accessed by the terminal device may perform the above-mentioned process on all target cells supporting the beamforming technology in the serving cell and the neighboring cell to be measured at the same time, so that the terminal device may perform RRM measurement on each target cell according to the received measurement reference signal indication of each target cell.
In one embodiment, the measurement reference signal indication may be a bitmap (bitmap).
In one scenario, when the reference signal sent by the target cell is an SSB, the length of the bitmap is the maximum number of SSBs supported by the frequency point where the target cell is located, which is specified by the protocol, for example, 4 bits, 8 bits, or 64 bits. The code of the bitmap is as follows:
Figure BDA0002434287310000191
each bit in the bitmap may represent an SSB, e.g., the first bit in the bitmap represents whether the SSB with index 0 is a measurement reference signal. The terminal device can judge whether the SSB represented by each bit is a sounding reference signal by the value of the bit. For example, a bit i having a value of "0" indicates that the SSB with index i is not a measurement reference signal, and a bit i having a value of "1" indicates that the SSB with index i is a measurement reference signal.
For example, in the scenario shown in fig. 2, the serving cell of the terminal device is cell1, and the frequency point where cell1 is located is f1. The cell2 and the cell3 are pilot frequency adjacent cells of the cell1, and the frequency points are f2 and f3 respectively. At most 8 SSBs can be supported to be transmitted on frequency points f1, f2, and f3, and the base station managing cell1 configures 7 SSBs for cell1, and transmits the SSBs in 7 different beam directions.
The base station managing the cell1 selects the SSB0-SSB6 in the cell2 as the measurement reference signal, and then sends the measurement reference signal indication-SSB-Home of the cell2 to the terminal equipmentMeasure =11111110 and configures the relaxed RRM measurement configuration parameter of cell2 to be the low threshold Td relax，short_cell2 . Thus, when the terminal device measures the signal quality of the SSB0-SSB6 of the cell2 below Td relax，short_cell2 When the cell2 is not performing the relaxed RRM measurement.
The base station managing cell1 selects SSB4-SSB6 in cell3 as the measurement reference signal, then sends the measurement reference signal indication of cell3 SSB-measurement =00001110 to the terminal device, and configures the relaxed RRM measurement configuration parameter of cell3 to include the high threshold Td relax，tall_cell3 And a low threshold Td relax，short_cell3 . Thus, when the terminal device measures that the signal quality of the measurement reference signals SSB4-SSB6 of the cell3 is lower than that of other SSBs, or when the signal quality of the SSBs 4-SSB6 is greater than the high threshold Td relax，tall_cell3 (or both are less than the lower threshold Td relax，short_cell3 ) The terminal device performs a relaxed RRM measurement on cell 3.
In another scenario, when the reference signal sent by the target cell is a CSI-RS, the length of the bitmap may be the maximum number of CSI-RSs used for RRM measurement supported by the protocol. Each bit represents one CSI-RS, e.g., the first bit in the bit map represents a CSI-RS with ID 0, and bit i represents a CSI-RS with ID i. The terminal equipment can judge whether the CSI-RS represented by the bit is a measurement reference signal or not through the value of the bit. For example, a bit i with a value of "0" indicates that the CSI-RS with ID i is not a measurement reference signal, and a bit i with a value of "1" indicates that the CSI-RS with ID i is a measurement reference signal.
By the RRM measurement method provided in the embodiment of the present application, for each target cell supporting the beamforming technology, the base station may select a measurement reference signal used for the terminal device to measure from the multiple reference signals, so that the signal quality of the measurement reference signal measured by the terminal device may be reflected more accurately, and the cell reselection accuracy of the terminal device may be further improved.
Based on the same technical concept, the embodiment of the present application further provides a communication device, which has a structure as shown in fig. 8 and includes a communication unit 801 and a processing unit 802. The communication apparatus may be applied to a base station or a terminal device in the communication system shown in fig. 1, and may implement the RRM measurement method provided in each of the above embodiments. The functions of the various units in the device 800 are described below:
the communication unit 801 functions to receive and transmit signals. The communication unit 801 may be implemented by a radio frequency circuit, wherein the radio frequency circuit includes an antenna.
The functions of the units when the communication apparatus 800 is applied to a terminal device to implement the embodiment shown in fig. 3 are described below.
A processing unit 802, configured to perform a relaxed RRM measurement on a first neighboring cell on a high-priority target frequency point when it is determined that at least one of the following conditions is met:
the measured signal quality of the serving cell is within a first set time period T speed_ser Is less than a first threshold Td speed_ser ；
The measured signal quality of the first neighbor cell is less than a second threshold Td relax_high_c1 (ii) a Wherein the Td relax_high_c1 Less than a signal quality threshold Td for reselection to the first neighbor cell x_high_c1 ；
The measured signal quality of the first adjacent cell is within a second set time length T speed_high_c1 Is less than a third threshold Td speed_high_c1 ；
The measured signal quality of each adjacent region on the high-priority target frequency point is less than a fourth threshold Td relax_high_ca 。
In an embodiment, the processing unit 802 is specifically configured to:
performing relaxed RRM measurements on the first neighbor cell in accordance with at least one or a combination of:
first detection time delay T detect，relax_high First measurement time delay T measure，relax_high First evaluation time delay T evaluate，relax_high ；
Wherein, T is detect，relax_high The detection time delay T of the high-priority target frequency point is greater than that of the non-relaxed RRM measurement detect，high Said T is measure，relax_high The measurement time delay T of the high-priority target frequency point is larger than that of the non-relaxed RRM measurement measure，high Said T is evaluate，relax_high The evaluation time delay T of the high-priority target frequency point is larger than that of the non-relaxed RRM measurement evaluate，high 。
In one embodiment, said T detect，relax_high Is said T detect，high Integer multiples of; or, the said measure，relax_high Is said T measure，high Integer multiples of; or, the T is evaluate，relax_high Is said T evaluate，high Integer multiples of.
In one embodiment, the processing unit 802 is further configured to:
when the signal quality of the serving cell is determined to be at the T speed_ser An inner variation amount smaller than the Td speed_ser And then, performing the relaxed RRM measurement on the second adjacent cell on the target frequency point with the same priority or the target frequency point with low priority according to at least one or a combination of the following items:
second detection time delay T detect，relax Second measurement time delay T measure，relax The second evaluation delay T evaluate，relax 。
The functions of the units when the communication apparatus 800 is applied to a terminal device to implement the embodiment shown in fig. 4A will be described below.
A processing unit 802, configured to perform a relaxation RRM measurement on a target neighboring cell when it is determined that the signal quality of the serving cell is within a signal quality range corresponding to the target neighboring cell.
In an embodiment, the processing unit 802 is specifically configured to:
the terminal equipment performs a relaxed RRM measurement on the target neighbor cell according to at least one of or a combination of the following:
first detection time delay T detect，relax_y First measurement time delay T measure，relax_y And/or the first evaluation delay T evaluate，relax_y ；
Wherein, T is detect，relax_y The detection time delay T of the target frequency point where the target adjacent cell is located is larger than that of the non-relaxed RRM measurement detect，y Said T is measure，relax_y The measurement time delay T is larger than the measurement time delay T of the target frequency point of the target adjacent cell when the non-relaxed RRM is measured measure，y Said T is evaluate，relax_y The evaluation time delay T is larger than the target frequency point of the target adjacent cell when the non-relaxed RRM is measured evaluate，y 。
In one embodiment, said T detect，relax_y Is said T detect，y Integer multiples of; or, the T is measure，relax_y Is said T measure，y Integer multiples of; or, the T is evaluate，relax_y Is said T evaluate，y Integer multiples of.
In one embodiment, the communication unit is further configured to receive a relaxed RRM measurement configuration parameter of the target neighbor from the base station;
the processing unit 802 is further configured to determine a signal quality range corresponding to the target neighboring cell according to the relaxed RRM measurement configuration parameter of the target neighboring cell.
In one embodiment, the parameters for configuring the relaxed RRM measurement in the target neighbor include: high threshold Td relax，tall_ser And/or a low threshold Td relax，short_ser Wherein, the Td relax，tall_ser Greater than Td relax，short_ser ；
Wherein, when the configuration parameters of the relaxed RRM measurement of the target neighbor cell include the Td relax，tall_ser Then, the signal quality range corresponding to the target neighboring cell includes: greater than Td relax，tall_ser (ii) a When the parameters of the measurement configuration of the relaxed RRM of the target neighbor cell comprise the Td relax，short_ser Then, the signal quality range corresponding to the target neighboring cell includes: less than Td relax，short_ser 。
In an embodiment, the communication unit is further configured to receive, from a base station, an evaluation reference signal indication corresponding to the target neighboring cell, where the evaluation reference signal indication indicates: q evaluation reference signals for evaluating whether to perform the relaxed RRM measurement on the target neighbor cell among the p reference signals of the serving cell, where p and q are positive integers and q is less than or equal to p;
the processing unit, when determining that the signal quality of the serving cell is within the signal quality range corresponding to the target neighboring cell, is specifically configured to:
determining signal qualities of q evaluation reference signals of the serving cell;
determining that the signal quality of the q evaluation reference signals is within the signal quality range.
In one embodiment, the evaluation reference signal is indicated as a bitmap.
The functions of the units when the communication apparatus 800 is applied to a terminal device to implement the embodiment shown in fig. 4B will be described below.
A processing unit 802, configured to perform a relaxation RRM measurement on any neighboring cell when it is determined, for any neighboring cell on any target frequency point, that the signal quality of the any neighboring cell is within the signal quality range corresponding to the any neighboring cell.
In an embodiment, when performing the relaxed RRM measurement on any neighbor cell, the processing unit 802 is specifically configured to:
performing relaxed RRM measurements for said any neighbor cell based on at least one or a combination of:
first detection time delay T detect，relax_y First measurement time delay T measure，relax_y First estimated time delay T evaluate，relax_y ；
Wherein, the T is detect，relax_y The detection time delay T of the target frequency point is larger than that of the non-relaxed RRM measurement detect，y Said T is measure，relax_y The measurement time delay T of the target frequency point is larger than that of the non-relaxed RRM measurement measure，y Said T is evaluate，relax_y Greater than unrelaxedThe evaluation time delay T of the target frequency point during RRM measurement evaluate，y 。
In one embodiment, said T detect，relax_y Is said T detect，y Integer multiples of; said T is measure，relax_y Is said T measure，y Integer multiples of; the T is evaluate，relax_y Is said T evaluate，y An integer multiple of.
In an embodiment, the communication unit 801 is further configured to receive a relaxed RRM measurement configuration parameter of any neighboring cell from the base station; the processing unit 802 is further configured to determine a signal quality range corresponding to any neighboring cell according to the relaxed RRM measurement configuration parameter of the neighboring cell.
In one embodiment, the parameters for configuring the relaxed RRM measurement in any neighbor include: high threshold Td relax，tall_c1 And/or, a low threshold Td relax，short_c1 Wherein, the Td relax，tall_c1 Greater than Td relax，short_c1 ；
Wherein, when the configuration parameters of the relaxed RRM measurement of any neighboring cell include the Td relax，tall_c1 When the signal quality range corresponding to any adjacent cell is larger than the Td relax，tall_c1 (ii) a When the parameters of the measurement configuration of the relaxed RRM of any neighbor cell comprise the Td relax，short_c1 When the signal quality range corresponding to any neighbor cell is smaller than the Td relax，short_c1 。
The functions of the units when the communication apparatus 800 is applied to a terminal device to implement the embodiment shown in fig. 5 are described below.
A processing unit 802, configured to perform a relaxation RRM measurement on each neighboring cell on each target frequency point when it is determined that the signal quality of the serving cell is within the signal quality range corresponding to the serving cell.
In an embodiment, when performing the relaxed RRM measurement on each neighboring cell on each target frequency point, the processing unit 802 is specifically configured to:
performing relaxed RRM measurement on a first neighboring cell on a first target frequency point based on at least one or a combination of the following, where the first target frequency point is any one of the target frequency points, and the first neighboring cell is any one of the neighboring cells on the first target frequency point:
first detection time delay T detect，relax_y First measurement time delay T measure，relax_y First estimated time delay T evaluate，relax_y ；
Wherein, the T is detect，relax_y The detection time delay T of the first target frequency point is larger than that of the non-relaxed RRM measurement detect，y Said T is measure，relax_y The measurement time delay T of the first target frequency point is larger than that of the non-relaxed RRM measurement measure，y Said T is evaluate，relax_y The evaluation time delay T of the first target frequency point is larger than that of the non-relaxed RRM measurement evaluate，y 。
In one embodiment, said T is detect，relax_y Is said T detect，y Integer multiples of; or, the T is measure，relax_y Is said T measure，y Integer multiples of; or, the T is evaluate，relax_y Is said T evaluate，y Integer multiples of.
The communication unit 801 is further configured to receive a relaxed RRM measurement configuration parameter of the serving cell from a base station;
the processing unit 802 is further configured to determine a signal quality range corresponding to the serving cell according to the relaxed RRM measurement configuration parameter of the serving cell.
In one embodiment, the relaxed RRM measurement configuration parameter of the serving cell includes: high threshold Td relax，tall_ser And/or a low threshold Td relax，short_ser Wherein, the Td relax，tall_ser Greater than Td relax，short_ser ；
Wherein, when the parameters of the measurement configuration of the relaxed RRM of the neighboring cell include the Td relax，tall_ser When the signal quality range corresponding to the adjacent cell is larger than the Td relax，tall_ser (ii) a When the parameters of the measurement configuration of the relaxed RRM of the neighboring cell comprise the Td relax，short_ser When, atThe signal quality range corresponding to the adjacent cell is less than the Td relax，short_ser 。
The functions of the units when the communication apparatus 800 is applied to the base station to implement the embodiment shown in fig. 7 will be described below.
A processing unit 802, configured to determine m measurement reference signals for making RRM measurements among n reference signals of a target cell, where n and m are positive integers, and m < n;
a communication unit 801, configured to send, to a terminal device, a measurement reference signal indication of the target cell, where the measurement reference signal indication is used to indicate the m measurement reference signals.
In one embodiment, the measurement reference signal is indicated as a bitmap.
The functions of the units when the communication apparatus 800 is applied to a terminal device to implement the embodiment shown in fig. 7 will be described below.
A communication unit 801, configured to receive, from a base station, a measurement reference signal indication of a target cell, where the measurement reference signal indicates m measurement reference signals used for making RRM measurements among n reference signals of the target cell;
a processing unit 802, configured to perform RRM measurement on the m measurement reference signals of the target cell according to the measurement reference signal indication of the target cell, so as to obtain signal quality of the m measurement reference signals.
It should be noted that, in the above embodiments of the present application, division of a module is schematic, and is only a logical function division, and in actual implementation, there may be another division manner, and in addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or may exist alone physically, or two or more units are integrated in one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Based on the same technical concept, embodiments of the present application further provide a communication device, which may be applied to a base station or a terminal device in the communication system shown in fig. 1, and may implement the RRM measurement method provided in the above embodiments. Referring to fig. 9, the communication network apparatus includes: a transceiver 901, a processor 902, and a memory 903. Wherein, the transceiver 901, the processor 902 and the memory 903 are connected to each other.
Optionally, the transceiver 901, the processor 902 and the memory 903 are connected to each other through a bus 904. The bus 904 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 9, but this does not indicate only one bus or one type of bus.
The transceiver 901 is configured to receive and send signals, so as to implement communication interaction with other devices. In one embodiment, the transceiver 901 may be divided into a transmit channel and a receive channel according to a division of a receive signal function and a transmit signal function. As shown, the transmit channel is composed of a Transmit (TX) signal processing unit, a TX rf channel and an antenna, and the receive channel is composed of a Receive (RX) signal processing unit, an RX rf channel and an antenna.
The TX signal processing unit performs various signal processing functions for signal transmission, including procedures for channel coding, scrambling, modulation, layer mapping, precoding, and antenna mapping. The RX signal processing unit implements various signal processing functions of signal reception, including synchronization, time-frequency tracking, measurement, channel estimation, equalization, demodulation, descrambling, decoding, and other processes.
The TX signal processing unit is connected with an antenna through a TX radio frequency channel, so that a baseband signal is modulated to a carrier frequency through the TX radio frequency channel and finally sent out through the antenna. The RX signal processing unit is connected to the antenna via an RX rf path, so that the RX rf path can demodulate the rf signal received from the antenna into a baseband signal, and process the baseband signal by the RX signal processing unit.
Optionally, some of the antennas may be configured to transmit and receive simultaneously, and thus be connected to both the TX and RX rf channels; part of the antenna is configured for reception only and is therefore connected to the RX radio channel only. In addition, the TX rf channel and the RX rf channel can be connected to any antenna, for example, the TX rf channel 1 and the RX rf channel 1 are connected to the antenna 2, and can be flexibly configured according to the service requirement.
In this application, when the communication device 900 is applied to a terminal device, the RX signal processing unit configures an RX radio frequency channel and an antenna, so that the RX radio frequency channel and the antenna operate on a frequency point of a serving cell or a neighboring cell. The RX radio frequency channel and the antenna receive reference signals of a service cell or a neighboring cell, and the RX signal processing unit processes the received reference signals and calculates the signal quality of the service cell and the neighboring cell. And determining the time of the next measurement, the target frequency point to be measured and the adjacent cell according to the criterion of relaxing RRM measurement.
The processor 902 is configured to implement the RRM measurement method in the foregoing embodiment, and specifically refer to the corresponding description in the foregoing embodiment, which is not described herein again.
The memory 903 is used for storing program instructions, data, and the like. In particular, the program instructions may include program code comprising computer operating instructions. The memory 903 may include a Random Access Memory (RAM) and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The processor 902 executes the program instructions stored in the memory 903 and uses the data stored in the memory 903 to implement the above functions, thereby implementing the RRM measurement method provided in the above embodiments.
Based on the above embodiments, embodiments of the present application further provide a computer program, which when run on a computer, causes the computer to execute the RRM measurement method provided by the above embodiments.
Based on the above embodiments, the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a computer, the computer program causes the computer to execute the RRM measurement method provided in the above embodiments.
Based on the above embodiments, an embodiment of the present application further provides a chip, where the chip is used to read a computer program stored in a memory, and implement the RRM measurement method provided by the above embodiments.
Based on the foregoing embodiments, an embodiment of the present application provides a chip system, where the chip system includes a processor, and is configured to support a computer device to implement the functions related to the base station or the terminal device in the RRM measurement method provided in the foregoing embodiments. In one possible design, the system-on-chip further includes a memory for storing programs and data necessary for the computer device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.
To sum up, the embodiments of the present application provide an RRM measurement method and device, where a terminal device may flexibly perform relaxed RRM measurement on a first neighboring cell on a high-priority target frequency point in a scene with a low probability of reselecting the first neighboring cell, so that the communication performance of the terminal device may be ensured and the power consumption of the terminal device may be saved.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (20)

1. An RRM measurement method, comprising:
when the terminal equipment determines that at least one of the following conditions is met, performing RRM (radio resource management) relaxation measurement on a first neighboring cell on a high-priority target frequency point:
the signal quality of the first neighboring cell measured by the terminal equipment is less than a second threshold Td relax_high_c1 (ii) a Wherein the Td relax_high_c1 Less than a signal quality threshold Td for reselection to the first neighbor cell x_high_c1 ；
The signal quality of the first adjacent cell measured by the terminal equipment is within a second set time length T speed_high_c1 Is less than a third threshold Td speed_high_c1 ；
The signal quality of each adjacent cell on the high-priority target frequency point measured by the terminal equipment is less than a fourth threshold Td relax_high_ca 。
2. The method of claim 1, wherein the terminal device performing the relaxed RRM measurements for the first neighbor cell comprises:
the terminal device performs a relaxed RRM measurement on the first neighbor cell according to at least one or a combination of:
first detection time delay T detect，relax_high First measurement time delay T measure，relax_high First evaluation delay T evaluate，relax_high ；
Wherein, the T is detect，relax_high The detection time delay T of the high-priority target frequency point is greater than that of the non-relaxed RRM measurement detect，high Said T is measure，relax_high The measurement time delay T of the high-priority target frequency point is larger than that of the non-relaxed RRM measurement measure，high Said T is evaluate，relax_high The evaluation time delay T of the high-priority target frequency point is larger than that of the non-relaxed RRM measurement evaluate，high 。
3. The method of claim 2, wherein T is detect，relax_high Is said T detect，high Integer multiples of; or, the said measure，relax_high Is said T measure，high Integer multiples of; or, the T is evaluate，relax_high Is said T evaluate，high Integer multiples of.
4. An RRM measurement method, comprising:
the terminal equipment determines that the signal quality of the serving cell is within a signal quality range corresponding to a target adjacent cell; the target adjacent cell is an adjacent cell on a high-priority target frequency point;
and the terminal equipment executes the relaxed RRM measurement on the target neighbor cell.
5. The method of claim 4, wherein the terminal device performing the relaxed RRM measurement on the target neighbor cell comprises:
the terminal equipment performs the relaxed RRM measurement on the target neighbor cell according to at least one or a combination of the following items:
first detection time delay T detect，relax_y First measurement time delay T measure，relax_y And/or the first evaluation delay T evaluate ， relax_y ；
Wherein, the T is detect，relax_y The detection time delay T is larger than the target frequency point where the target adjacent cell is located when the non-relaxed RRM is measured detect，y Said T is measure，relax_y The measurement time delay T of the target frequency point of the target adjacent cell is larger than that of the non-relaxed RRM measurement measure，y Said T is evaluate，relax_y The evaluation time delay T is larger than the target frequency point of the target adjacent cell when the non-relaxed RRM is measured evaluate，y 。
6. The method of claim 5, wherein T is detect，relax_y Is said T detect，y Integer multiples of; or, the T is measure，relax_y Is said T measure，y Integer multiples of; or, the T is evaluate，relax_y Is said T evaluate，y Integer multiples of.
7. The method of claim 4, wherein the method further comprises:
the terminal equipment receives a relaxed RRM measurement configuration parameter of the target neighbor cell from a base station;
and the terminal equipment determines a signal quality range corresponding to the target neighbor cell according to the relaxed RRM measurement configuration parameter of the target neighbor cell.
8. The method of claim 7, wherein the relaxed RRM measurement configuration parameters for the target neighbor include: high threshold Td relax，tall_ser And/or a low threshold Td relax，short_ser Wherein, the Td relax，tall_ser Greater than Td relax，short_ser ；
Wherein, when the configuration parameters of the relaxed RRM measurement of the target neighbor cell include the Td relax，tall_ser Then, the signal quality range corresponding to the target neighboring cell includes: greater than Td relax，tall_ser (ii) a When the configuration parameters of the relaxed RRM measurement of the target neighbor cell comprise the Td relax，short_ser Then, the signal quality range corresponding to the target neighboring cell includes: less than the Td relax，short_ser 。
9. The method of any one of claims 4-8, further comprising:
the terminal device receives an evaluation reference signal indication corresponding to the target neighboring cell from a base station, wherein the evaluation reference signal indication is used for indicating: q evaluation reference signals for evaluating whether to perform the relaxed RRM measurement on the target neighbor cell among the p reference signals of the serving cell, where p and q are positive integers and q is less than or equal to p;
the determining, by the terminal device, that the signal quality of the serving cell is within the signal quality range corresponding to the target neighboring cell includes:
the terminal equipment determines the signal quality of q evaluation reference signals of the serving cell;
the terminal device determines that the signal quality of the q evaluation reference signals is within the signal quality range.
10. The method of claim 9, wherein the evaluation reference signal indication is a bitmap.
11. A terminal device, comprising:
a communication unit for receiving and transmitting signals;
a processing unit, configured to perform a relaxed RRM measurement on a first neighbor cell on a high-priority target frequency point when it is determined that at least one of the following conditions is satisfied:
the measured signal quality of the first neighbor cell is less than a second threshold Td relax_high_c1 (ii) a Wherein the Td relax_high_c1 Less than a signal quality threshold Td for reselection to the first neighbor cell x_high_c1 ；
The measured signal quality of the first adjacent cell is within a second set time length T speed_high_c1 Is less than a third threshold Td speed_high_c1 ；
The measured signal quality of each adjacent region on the high-priority target frequency point is less than a fourth threshold Td relax_high_ca 。
12. The terminal device of claim 11, wherein the processing unit is specifically configured to:
performing relaxed RRM measurements on the first neighbor cell in accordance with at least one or a combination of:
first detection time delay T detect，relax_high First measurement time delay T measure，relax_high First evaluation time delay T evaluate，relax_high ；
Wherein, T is detect，relax_high The detection time delay T of the high-priority target frequency point is greater than that of the non-relaxed RRM measurement detect，high Said T is measure，relax_high The measurement time delay T of the high-priority target frequency point is larger than that of the non-relaxed RRM measurement measure，high Said T is evaluate，relax_high The evaluation time delay T of the high-priority target frequency point is larger than that of the non-relaxed RRM measurement evaluate，high 。
13. The terminal device of claim 12, wherein T is detect，relax_high Is said T detect，high Integer multiples of; or, the said measure，relax_high Is said T measure，high Integer multiples of; or, the T is evaluate，relax_high Is said T evaluate，high Integer multiples of.
14. A terminal device, comprising:
a communication unit for receiving and transmitting signals;
the processing unit is used for performing relaxed RRM measurement on a target neighbor cell when the signal quality of a serving cell is determined to be within a signal quality range corresponding to the target neighbor cell; and the target adjacent cell is an adjacent cell on the high-priority target frequency point.
15. The terminal device of claim 14, wherein the processing unit is specifically configured to:
the terminal equipment performs the relaxed RRM measurement on the target neighbor cell according to at least one or a combination of the following items:
first detection time delay T detect，relax_y First measurement time delay T measure，relax_y And/or the first evaluation delay T evaluate，relax_y ；
Wherein, T is detect，relax_y The detection time delay T is larger than the target frequency point where the target adjacent cell is located when the non-relaxed RRM is measured detect，y Said T is measure，relax_y The measurement time delay T of the target frequency point of the target adjacent cell is larger than that of the non-relaxed RRM measurement measure，y Said T is evaluate，relax_y The evaluation time delay T is larger than the target frequency point of the target adjacent cell when the non-relaxed RRM is measured evaluate，y 。
16. The terminal device of claim 15, wherein T is the mobile station detect，relax_y Is said T detect，y Integer multiples of; or, the T is measure，relax_y Is said T measure，y Integer multiples of; or, the T is evaluate，relax_y Is said T evaluate，y Integer multiples of.
17. The terminal device of claim 14, wherein the communication unit is further configured to receive a relaxed RRM measurement configuration parameter for the target neighbor from a base station;
the processing unit is further configured to determine a signal quality range corresponding to the target neighbor cell according to the relaxed RRM measurement configuration parameter of the target neighbor cell.
18. The terminal device of claim 17, wherein the relaxed RRM measurement configuration parameters for the target neighbor include: high threshold Td relax，tall_ser And/or, a low threshold Td relax，short_ser Wherein, the Td relax，tall_ser Greater than Td relax，short_ser ；
Wherein, when the configuration parameters of the relaxed RRM measurement of the target neighbor cell include the Td relax，tall_ser Then, the signal quality range corresponding to the target neighboring cell includes: greater than Td relax，tall_ser (ii) a When the parameters of the measurement configuration of the relaxed RRM of the target neighbor cell comprise the Td relax，short_ser Then, the information corresponding to the target neighbor cellThe number mass range includes: less than Td relax，short_ser 。
19. The terminal device of any one of claims 14-18,
the communication unit is further configured to receive, from a base station, an evaluation reference signal indication corresponding to the target neighboring cell, where the evaluation reference signal indication is used to indicate: q evaluation reference signals for evaluating whether to perform the relaxed RRM measurement on the target neighbor cell among the p reference signals of the serving cell, where p and q are positive integers and q is less than or equal to p;
the processing unit, when determining that the signal quality of the serving cell is within the signal quality range corresponding to the target neighboring cell, is specifically configured to:
determining signal qualities of q evaluation reference signals of the serving cell;
determining that the signal quality of the q evaluation reference signals is within the signal quality range.
20. The terminal device of claim 19, wherein the evaluation reference signal indication is a bitmap.
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