CN108810962B - Dual connection measurement configuration method, communication system, base station and readable storage medium - Google Patents

Dual connection measurement configuration method, communication system, base station and readable storage medium Download PDF

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Publication number
CN108810962B
CN108810962B CN201710298473.8A CN201710298473A CN108810962B CN 108810962 B CN108810962 B CN 108810962B CN 201710298473 A CN201710298473 A CN 201710298473A CN 108810962 B CN108810962 B CN 108810962B
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base station
frequency
terminal
configuration
measurement
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CN108810962A (en
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邓云
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for 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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • 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
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements
    • 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
    • H04W36/0085—Hand-off measurements
    • H04W36/0094—Definition of hand-off measurement parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a dual-connection measurement configuration method, a communication system, a base station and a readable storage medium, wherein the method comprises the following steps: receiving a different system frequency configuration range from a different system base station to determine a secondary system frequency measured by the different system base station for the terminal configuration; determining a frequency configuration range of the system according to the frequency configuration range of the different system, wherein the frequency configuration range of the system is used for indicating a base station of the system to configure a measured auxiliary system frequency for a terminal; configuring the measurement in the frequency configuration range of the system for the terminal; the terminal accesses the primary system and tries to access the secondary system in a dual-connection mode according to the indication from the primary system. The technical scheme of the invention can reduce the resource overhead in the double connection process.

Description

Dual connection measurement configuration method, communication system, base station and readable storage medium
Technical Field
The present invention relates to the field of communications, and in particular, to a dual connectivity measurement configuration method, a communication system, a base station, and a readable storage medium.
Background
With the continuous development of wireless technology, a situation may arise where a new system coexists with a previous system. For example, 3GPP will introduce New Radio access technology (NR), including at least fifth generation mobile communication technology (5G), to cope with the demand for larger data volume and the demand for smaller transmission delay. With the popularization and application of 5G, a scenario that a 5G system and an LTE system coexist will appear.
In a scenario where different systems coexist, a User Equipment (UE, also referred to as a terminal herein) may access different systems in a dual-connection manner, so as to fully utilize data transmission capabilities of the different systems. The resource overhead of the existing dual connection mode needs to be reduced.
Disclosure of Invention
The invention solves the technical problem of reducing the resource overhead in the double connection process.
To solve the foregoing technical problem, an embodiment of the present invention provides a dual connectivity measurement configuration method, including: receiving a different system frequency configuration range from a different system base station to determine a secondary system frequency measured by the different system base station for the terminal configuration; determining a frequency configuration range of the system according to the frequency configuration range of the different system, wherein the frequency configuration range of the system is used for indicating a base station of the system to configure a measured auxiliary system frequency for a terminal; configuring the measurement in the frequency configuration range of the system for the terminal; the terminal accesses the primary system and tries to access the secondary system in a dual-connection mode according to the indication from the primary system.
Optionally, the inter-system base station is an auxiliary base station, and the auxiliary base station is a base station of the auxiliary system; the determining the frequency configuration range of the system according to the frequency configuration range of the different system comprises: and determining the frequency configuration range of the present system outside the frequency configuration range of the different system.
Optionally, the terminal records an auxiliary system access measurement configuration, where the auxiliary system access measurement configuration is a measurement configuration of an auxiliary system frequency that is issued by the primary base station to the terminal before the terminal accesses the auxiliary system, and the method further includes: and indicating the terminal to reserve the auxiliary system access measurement configuration.
Optionally, the inter-system base station is a master base station, and the master base station is a base station of the master system; the determining the frequency configuration range of the system according to the frequency configuration range of the different system comprises: determining a frequency of a serving cell of the secondary system; and adding the frequency of the serving cell to the frequency configuration range of the system.
Optionally, the determining the frequency configuration range of the system according to the frequency configuration range of the inter-system further includes: and adding the auxiliary system frequency outside the frequency configuration range of the different system to the frequency configuration range of the system.
Optionally, the dual connectivity measurement configuration method further includes: and transmitting the frequency configuration range of the system to a main base station.
Optionally, the dual connectivity measurement configuration method further includes: and transmitting the frequency of the serving cell of the secondary system to the main base station.
Optionally, the measurement configured for the terminal in the frequency configuration range of the present system is effective after the attempt to access the secondary system is successful.
An embodiment of the present invention further provides a communication system, including: the system comprises a local system base station, a heterogeneous system base station and a terminal; the base station of the present system includes: the different-system frequency configuration range receiving unit is suitable for receiving a different-system frequency configuration range from a different-system base station so as to determine an auxiliary system frequency measured by the different-system base station for terminal configuration; the system frequency configuration range determining unit is suitable for determining the system frequency configuration range according to the different system frequency configuration range, and the system frequency configuration range is used for indicating the system base station to configure and measure the auxiliary system frequency for the terminal; the configuration unit is suitable for configuring the terminal with the measurement in the frequency configuration range of the system; the terminal has access to the main system and tries to access to the auxiliary system in a double-connection mode according to the indication from the main system; the inter-system base station is adapted to transmit the inter-system frequency configuration range to the local system base station.
Optionally, the base station of the present system is a master base station, the base station of the different system is an auxiliary base station, the master base station is a base station of the master system, and the auxiliary base station is a base station of the auxiliary system; the local system frequency configuration range determining unit is adapted to determine the local system frequency configuration range outside the inter-system frequency configuration range.
Optionally, the terminal records an auxiliary system access measurement configuration, where the auxiliary system access measurement configuration is a measurement configuration of an auxiliary system frequency that is issued by the main base station to the terminal before the terminal accesses the auxiliary system, and the main base station further includes: and the reservation indicating unit is suitable for indicating the terminal to reserve the auxiliary system access measurement configuration.
Optionally, the terminal is adapted to receive an indication of the primary base station, reserve the secondary system access measurement configuration, and perform measurement according to the measurement configuration of the secondary base station at a frequency within the frequency configuration range of the inter-system.
Optionally, the base station of the present system is an auxiliary base station, the base station of the different system is a main base station, the auxiliary base station is a base station of the auxiliary system, and the main base station is a base station of the main system; the frequency configuration range determining unit of the present system includes: a secondary system serving cell frequency determining unit adapted to determine a frequency of a serving cell of the secondary system; and the first adding unit is suitable for adding the frequency of the serving cell to the frequency configuration range of the system.
Optionally, the frequency configuration range determining unit of the present system further includes: and the second adding unit is suitable for adding the auxiliary system frequency out of the frequency configuration range of the different system to the frequency configuration range of the system.
Optionally, the secondary base station further includes: and the system frequency configuration range sending unit is suitable for sending the system frequency configuration range to the main base station.
Optionally, the secondary base station further includes: and the secondary system serving cell frequency sending unit is suitable for sending the frequency of the serving cell of the secondary system to the main base station.
Optionally, the terminal records an auxiliary system access measurement configuration, the auxiliary system access measurement configuration is a measurement configuration of an auxiliary system frequency issued by the main base station to the terminal before the terminal accesses the auxiliary system, and the main base station is further adapted to instruct the terminal to reserve the auxiliary system access measurement configuration.
Optionally, the terminal is adapted to receive the indication of the primary base station, reserve the access measurement configuration of the secondary system, and perform measurement according to the measurement configuration of the secondary base station on the frequency of the serving cell of the secondary system.
Optionally, the primary base station issues a secondary base station measurement configuration to the terminal, where the secondary base station measurement configuration is a configuration performed by the secondary base station for instructing the terminal to measure in a frequency configuration range of the different system or in a frequency configuration range of the present system.
Optionally, the measurement configuration of the secondary base station is issued to the terminal through RRC connection reconfiguration.
Optionally, the terminal, in response to receiving the measurement configuration of the auxiliary base station, performs measurement according to the configuration of the auxiliary base station on an auxiliary system frequency at which the auxiliary base station configures measurement for the terminal.
Optionally, if the attempt to access the secondary system fails, the terminal terminates the measurement according to the configuration of the secondary base station.
Optionally, the terminal, in response to the success of attempting to access the secondary system, performs measurement according to the secondary base station configuration on the secondary system frequency for which the secondary base station configures measurement for the terminal.
Optionally, the base station of the present system is a master base station, the base station of the different system is an auxiliary base station, the auxiliary base station is a base station of the auxiliary system, and the master base station is a base station of the master system; the terminal is suitable for receiving the measurement configuration of the main base station for measurement and receiving the measurement configuration of the auxiliary base station for measurement, and if the measurement configured by the main base station and the auxiliary base station exceeds the upper limit of the measurement capability of the terminal, the measurement is preferentially carried out according to the measurement configuration of the auxiliary base station.
Optionally, the base station of the present system is a master base station, the base station of the different system is an auxiliary base station, the auxiliary base station is a base station of the auxiliary system, and the master base station is a base station of the master system; the terminal reserves the auxiliary system access measurement configuration according to the indication; and if the terminal is disconnected with the auxiliary base station, the terminal recovers the auxiliary system access measurement configuration for measurement.
The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes the steps of the dual connectivity measurement configuration method when running the computer instruction.
The embodiment of the invention also provides a computer-readable storage medium, on which computer instructions are stored, and the computer instructions execute the steps of the dual-connection measurement configuration method when running.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the embodiment of the present invention, the inter-system frequency configuration range of the inter-system base station is received, and the inter-system frequency configuration range may indicate the inter-system base station to configure the measured secondary system frequency for the terminal. And determining the frequency configuration range of the system according to the frequency configuration range of the different system so as to determine the frequency configuration range of the base station of the system, wherein the frequency configuration range of the system is used for indicating the base station of the system to configure the measured auxiliary system frequency for the terminal. The frequency configuration range of the system is determined according to the frequency configuration range of the different system, so that the frequency configuration range of the different system is comprehensively considered in the determination process of the frequency configuration range of the system, the frequency of the auxiliary system included in the frequency configuration range of the system is more reasonable and targeted, the matching degree with the current communication scene is higher, and further, according to the frequency configuration range of the system, the terminal can be more accurately configured and measured, and the resources of the communication system can be further saved.
Drawings
Fig. 1 is a flow chart of a dual connectivity measurement configuration method according to an embodiment of the present invention;
FIG. 2 is a flowchart of one specific implementation of step S12 in FIG. 1;
fig. 3 is a schematic structural diagram of a communication system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a base station of the present system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a master base station according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a frequency allocation range determining unit of the present system in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a secondary base station in an embodiment of the present invention.
Detailed Description
Under the scene of coexistence of different systems, the terminal can access different systems in a dual-connection mode so as to fully utilize the data transmission capability of the different systems. The resource overhead of the existing dual connection mode needs to be reduced.
For example, in one implementation of dual connectivity, the primary and secondary base stations each independently configure measurements for the UE, which may result in repetition of measurements by the UE for the same frequency, thereby resulting in increased signaling overhead and power consumption by the UE.
The procedure for making a dual connection is usually that the terminal accesses one system first and then the other system. For convenience of description, the system accessed first is referred to as the primary system in this application. After the terminal accesses the main system, the measurement configuration related to the auxiliary system frequency sent by the main system is received, and after the measurement configuration sent by the main system is measured and reported, the auxiliary system is accessed.
For example, taking the case of coexistence of LTE and NR systems as an example, a procedure for establishing dual connectivity will be described:
the terminal can first access the LTE base station, establish RRC connection, and then establish a data radio bearer to start a data service. Due to the high speed data transmission requirement, the base station of the LTE attempts to configure LTE-NR dual connectivity for the UE, and the base station of the LTE first configures a measurement configuration for the UE to measure certain NR frequencies.
The measurement configuration in LTE may be indicated by measurement identities, one measurement identity corresponding to one measurement object, e.g. one secondary system frequency, and one reporting condition. For convenience of description, it is assumed that the LTE system performs measurement on frequencies F1, F2, and F3 for the terminal, and each of the frequencies F1, F2, and F3 is an NR frequency, that is, a secondary system frequency. It is not limited herein that the LTE base station may configure the UE with measurements for LTE frequencies.
The reporting condition may be a periodic reporting or an event-triggered reporting. The event trigger may be that the signal quality or signal strength of the neighbor cell exceeds a preset threshold, or that the signal quality or signal strength of the neighbor cell is higher than the signal quality or signal strength of the serving cell by a predetermined offset.
After receiving the measurement configuration of the LTE about the frequency of the auxiliary system, the terminal can measure according to the measurement requirement and report a measurement report when the reporting condition is met. The LTE base station can select a proper NR cell to configure double connection for the terminal according to the measurement report reported by the terminal.
The LTE base station can send a double-connection configuration Request to the NR base station, the double-connection configuration Request can be the same as or similar to a double-connection configuration Request (SeNB Addition Request) of different base stations in the LTE system, after the NR base station configures wireless parameters for the terminal, a double-connection configuration response is returned to the LTE base station, the LTE base station sends the wireless parameters configured by the NR system to the terminal, and the terminal accesses the NR cell according to the wireless parameters.
In order for an NR base station serving as an auxiliary system base station to maintain the configuration of a serving cell and meet the requirement for changing the auxiliary base station, the NR base station needs to configure a terminal to measure certain NR frequencies, and the NR base station determines the selection of the auxiliary system serving cell, so that the NR base station configures information such as reporting conditions on the certain auxiliary system frequencies. For example, the NR base station configures the terminal with measurements at frequency F1, frequency F2, and frequency F4, and frequency F4 is also the secondary system frequency.
In this case, it may occur that the terminal has at least two sets of measurement configurations on the same secondary system frequency. For example, in this example, the terminal has two sets of measurement configurations at frequency F1 and frequency F2, one from the LTE base station and the other from the NR base station.
As can be seen from the above example, the secondary system may also configure the terminal with the measurement of the secondary system frequency, and at this time, the terminal may be configured by the primary system and the secondary system to measure the same secondary system frequency. If the terminals respectively perform the measurement and respectively report the measurement report, the power consumption of the terminals and the signaling resources of the communication system are wasted.
As will be understood by those skilled in the art, the secondary system frequency-dependent measurement configuration received by the terminal from the primary system configuration may be received from a base station of the primary system, that is, may be received by the primary base station; receiving a measurement configuration related to a secondary system frequency configured by a secondary system, wherein the measurement configuration related to the secondary system frequency needs to be received by a main base station before dual connectivity is established, namely the secondary base station needs to firstly inform the main base station of the measurement configuration related to the configured secondary system frequency and then the main base station sends the measurement configuration related to the secondary system frequency to a terminal; after the dual connectivity is established, the secondary base station may directly send the configured secondary system frequency-dependent measurement configuration to the terminal.
In the embodiment of the present invention, the inter-system frequency configuration range of the inter-system base station is received, and the inter-system frequency configuration range may indicate the inter-system base station to configure the measured secondary system frequency for the terminal, that is, the inter-system base station sets the measurement configuration within the inter-system frequency configuration range. And determining the frequency configuration range of the system according to the frequency configuration range of the different system so as to determine the frequency configuration range of the base station of the system, wherein the frequency configuration range of the system is used for indicating the base station of the system to configure the measured auxiliary system frequency for the terminal, namely, the base station of the system sets the measurement configuration in the frequency configuration range of the system.
The frequency configuration range of the system is determined according to the frequency configuration range of the different system, so that the frequency configuration range of the different system is comprehensively considered in the determination process of the frequency configuration range of the system, the frequencies of the auxiliary systems included in the frequency configuration range of the system are more reasonable and targeted, the matching degree with the current communication scene is higher, and further, according to the frequency configuration range of the system, the terminal can be more accurately configured and measured, and the signaling resources of the communication system can be further saved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a flowchart of a dual connectivity measurement configuration method in an embodiment of the present invention, which may specifically include the following steps:
step S11, receiving a different system frequency configuration range from a different system base station to determine a secondary system frequency measured by the different system base station for terminal configuration;
step S12, determining the frequency configuration range of the system according to the frequency configuration range of the different system, wherein the frequency configuration range of the system is used for indicating the base station of the system to configure the measured auxiliary system frequency for the terminal;
step S13, configuring the terminal with the measurement in the frequency configuration range of the system;
the terminal accesses the primary system and tries to access the secondary system in a dual-connection mode according to the indication from the primary system.
The different-system frequency configuration range and the present-system frequency configuration range may both include the secondary system frequency, the different-system base station may perform measurement configuration on the frequency included in the different-system frequency configuration range, for example, set the measurement identifier, and the present-system base station may perform measurement configuration on the frequency included in the present-system frequency configuration range, for example, set the measurement identifier, as described above, the measurement identifier may include the measurement frequency and the reporting condition.
In step S13, configuring the terminal with the measurement in the frequency configuration range of the present system may be to perform measurement configuration on frequencies included in the frequency configuration range of the present system. The measurement configuration of the base station of the system to the terminal can be realized together by the measurement configuration within the frequency configuration range of the system, and the measurement configuration of the base station of the different system to the terminal can be realized together by the measurement configuration within the frequency configuration range of the different system. Both the primary base station and the secondary base station may configure the measurements for the terminal according to the measurement configuration.
Steps S11 to S13 may be performed by the base station of the present system. In the embodiment of the present invention, the system base station and the inter-system base station are not limited, and the system base station may be a base station of a main system, that is, a main base station, or a base station of an auxiliary system, that is, an auxiliary base station; correspondingly, when the base station of the present system is the primary base station, the base station of the different system is the secondary base station, and when the base station of the present system is the secondary base station, the base station of the different system is the primary base station.
The primary system and the secondary system may be an NR system and an LTE system, respectively, for example, the primary system may be an LTE system, and the secondary system may be an NR system; alternatively, the primary system may be an NR system and the secondary system may be an LTE system.
Hereinafter, the case where the own-system base station is the main base station, the case where the different-system base station is the sub base station, and the case where the own-system base station is the sub base station and the case where the different-system base station is the main base station will be described.
First, a case where the different system base station is a secondary base station and the present system base station is a primary base station will be described.
When the inter-system base station is the secondary base station, the local system base station is the primary base station, and the inter-system frequency allocation range received from the inter-system base station in step S11 is the inter-system frequency allocation range received from the secondary base station.
In a specific implementation of step S12, the present system frequency configuration range may be determined outside the inter-system frequency configuration range. Specifically, the secondary system frequency may be selected as the frequency included in the present system frequency configuration range, outside the inter-system frequency configuration range, to configure the terminal with the measurements on these frequencies in step S13.
The inter-system frequency configuration range received in step S11 may be the secondary system frequency measured by the secondary base station for the terminal configuration, or may also be the serving cell of the secondary system determined by the secondary base station, or may also include both of the foregoing.
When the inter-system frequency configuration range is the serving cell of the secondary system determined by the secondary base station, the primary base station may default that the secondary base station performs measurement configuration for the terminal on the frequency of the serving cell of the secondary system indicated by the inter-system frequency configuration range, and may further determine that the secondary base station configures the measured secondary system frequency for the terminal.
The different-system frequency configuration range received from the different-system base station may be received through an interface between the present system base station and the different-system base station, for example, may be received through a dual-connection configuration response.
In this embodiment, the inter-system base station is a secondary base station, and when the secondary system is an NR system, the secondary base station is an NR base station, and the primary base station is an LTE base station. The following describes a more detailed manner of transmitting the inter-system frequency allocation range in step S11 in this scenario.
Parameters configured by the NR base station for the terminal, such as a serving cell of the secondary system, NR measurement configuration, and the like, may be stored in a Radio Resource Control container (RRC container). The inter-system frequency configuration range may include these parameters, and since the RRC container is organized in a coding manner of the NR system, the LTE base station cannot generally recognize the parameters directly stored by the RRC container, so that the NR frequency configured by the secondary base station may be indicated in the dual connectivity configuration response by using a preset cell in addition to the RRC container through an interface between the NR base station and the LTE base station.
That is, the secondary base station may transmit the NR frequency configured by the secondary base station in addition to the radio parameter configured by the NR side in the dual connectivity configuration response.
As mentioned above, before the terminal accesses the secondary system base station, the primary base station generally configures the terminal with measurements on the secondary system frequency, so that the primary base station finds that the terminal is close to the secondary base station and tries to establish dual connectivity for the terminal to access the secondary system. In this case, the terminal may record the secondary system access measurement configuration, that is, may record the measurement configuration of the secondary system frequency issued by the main base station to the terminal. At this time, the terminal may also be instructed to reserve the secondary system access measurement configuration.
If the terminal reserves the secondary system access measurement configuration according to the indication, random access needs to be executed when the terminal fails in further connection aiming at the secondary base station, namely, the terminal initially accesses the secondary base station according to the parameters in the dual-connection configuration response, if the random access fails, the measurement of the secondary base station configuration can be stopped, and the measurement configured according to the main base station is recovered according to the reserved secondary system access measurement configuration.
In step S13, the measurement configured by the main base station for the terminal may take effect immediately, that is, the terminal may perform measurement and report according to the measurement frequency and the reporting condition indicated by the main base station according to the frequency configuration range of the system in response to the measurement configured for the terminal in the frequency configuration range of the system.
The measurement configured by the auxiliary base station for the terminal can take effect after the terminal attempts to access the auxiliary system successfully; or the terminal may perform measurement according to the measurement configuration of the secondary base station in response to receiving the measurement configuration of the secondary base station, but if the terminal fails to attempt to access the secondary system, the terminal may not perform measurement according to the measurement configuration of the secondary base station.
The measurement configured by the auxiliary base station for the terminal is effective after the terminal attempts to access the auxiliary system successfully, so that the terminal can be prevented from switching among different measurement configurations, and the power consumption of the terminal is saved.
The following further describes a case where the different system base station is the secondary base station and the present system base station is the primary base station, using the foregoing example. In the foregoing example, the LTE system is a primary system, the LTE base station is a base station of the primary system, the NR system is a secondary system, and the NR base station is a base station of a different system.
The LTE base station configures the terminal with measurements on frequency F1, frequency F2, and frequency F3 so that the terminal attempts to access the NR base station. That is, the secondary system access measurement configuration includes measurement configurations on frequency F1, frequency F2, and frequency F3.
The NR base station configures the terminal with measurements on frequency F1, frequency F2, and frequency F4, that is, the heterogeneous system frequency configuration range includes frequency F1, frequency F2, and frequency F4. The frequency F1, the frequency F2, the frequency F3, and the frequency F4 are NR frequencies, i.e., secondary system frequencies.
Assuming that the LTE base station determines from the received inter-system frequency configuration range that the secondary base station configures the measurement for the terminal at frequency F1, frequency F2, and frequency F4, in step S12, the LTE base station may configure the measurement for the terminal at a secondary system frequency other than frequency F1, frequency F2, and frequency F4, for example, at frequency F3. The specific parameters of the LTE base station configured for measurement on frequency F1 and frequency F2 may not be changed.
The LTE base station may transmit the measurement configuration of the NR base station to the terminal through RRC connection reconfiguration, and may instruct the terminal to retain the measurement configuration of the LTE base station on frequency F1 and frequency F2. The terminal may no longer measure in the measurement configuration of the main base station on frequency F1 and frequency F2, but the terminal may still measure in the measurement configuration of the main base station on frequency F3.
For the measurement configuration of the NR base station, the terminal may perform measurement according to the measurement configuration in response to receiving the measurement configuration until the terminal fails to attempt to access the NR base station. Alternatively, the terminal may perform measurement according to the measurement configuration of the NR base station after the attempt to access the NR base station is successful, i.e., the initial random access for the NR base station is successful.
The above description is made on a scenario in which the inter-system base station is the secondary base station and the present system base station is the primary base station. It can be seen from the above that, by determining the system configuration range outside the inter-system frequency configuration range, the system base station and the inter-system base station perform measurement configuration in the repeated frequency range, thereby saving the overhead of signaling resources and reducing the power consumption of the terminal.
The following further describes a scenario in which the different system base station is a primary base station and the present system base station is a secondary base station.
When the inter-system base station is the main base station and the present system base station is the secondary base station, the inter-system frequency allocation range received from the inter-system base station in step S11 is received from the main base station, and it is determined that the main base station allocates the measured secondary system frequency for the terminal.
The inter-system frequency configuration range received from the inter-system base station in step S11 may be received through the dual connectivity configuration request, that is, the main base station may send the measurement report (or measurement result) of the UE in the dual connectivity configuration request, and also instruct the main base station to determine the secondary system frequency for performing measurement configuration on the terminal.
Referring to fig. 2, the specific implementation of step S12 may include:
step S21, determining a frequency of a serving cell of the secondary system;
step S22, add the frequency of the serving cell to the frequency configuration range of the present system.
Further, step S12 may further include step S23, adding the auxiliary system frequency outside the inter-system frequency configuration range to the local system frequency configuration range.
In this way, the present system frequency configuration range may include the frequency of the serving cell of the secondary system determined by the secondary base station, and the secondary system frequency determined outside the inter-system frequency range.
Therefore, the frequency allocation range of the present system and the frequency allocation range of the different system will not overlap with each other except the frequency of the serving cell of the secondary system. Therefore, the overhead of signaling resources is saved, and the power consumption of the terminal is reduced.
And the auxiliary base station determines the frequency configuration range of the system according to the frequency configuration range of the different system, and configures the measurement in the frequency configuration range of the system for the terminal.
The measurement configuration performed by the secondary base station within the frequency configuration range of the system can be issued by the primary base station, for example, the measurement configuration is sent to the terminal through RRC connection reconfiguration. The measurement configuration of the secondary base station may be informed to the primary base station by a dual connectivity configuration response.
The secondary base station may also send the frequency configuration range of the present system and/or the frequency of the serving cell of the secondary system to the primary base station, for example, may send a dual connectivity configuration response to the primary base station.
Similar to the scenario that the base station of the different system is the secondary base station and the base station of the present system is the primary base station, the measurement configured by the secondary base station for the terminal in step S13 may take effect after the terminal attempts to access the secondary system successfully; or the terminal may perform measurement according to the measurement configuration of the secondary base station in response to receiving the measurement configuration of the secondary base station, but if the terminal fails to attempt to access the secondary system, the terminal may not perform measurement according to the measurement configuration of the secondary base station.
And after the measurement configuration of the auxiliary base station takes effect, the terminal carries out measurement according to the measurement configuration of the auxiliary base station.
Similar to the scenario that the different system base station is the auxiliary base station and the base station of the present system is the main base station, the main base station can also instruct the terminal to reserve the auxiliary system access measurement configuration, and the terminal can restore the measurement configured according to the main base station according to the reserved auxiliary system access measurement configuration when the attempt to access the auxiliary system fails.
Again, the previous example is used to further explain the case where the different system base station is the primary base station and the present system base station is the secondary base station. In the foregoing example, the LTE system is a primary system, the LTE base station is a base station of the primary system, the NR system is a secondary system, and the NR base station is a base station of a different system. The LTE base station configures the terminal with measurements on frequency F1, frequency F2, and frequency F3 so that the terminal attempts to access the NR base station. The frequency F1, the frequency F2, the frequency F3, and the frequency F4 are NR frequencies, i.e., secondary system frequencies. The iso-system frequency configuration range may include a frequency F1, a frequency F2, a frequency F3, and a frequency F4.
And the NR base station determines that the LTE base station carries out measurement configuration on the frequency F1, the frequency F2 and the frequency F3 through the dual-connection configuration request, and configures measurement for the terminal. The NR base station determines that the frequency of the serving cell includes frequency F1 and frequency F2, the NR base station may perform measurement configuration on frequency F1 and frequency F2, but not configure measurement for the terminal on frequency F3.
The NR base station may configure the measurement for the terminal on other secondary system frequencies than frequency F1, frequency F2, and frequency F3, for example, may configure the measurement for the terminal on frequency F4.
After the NR base station completes configuration, the LTE base station may be informed of the measurement configuration of the NR base station through a dual connectivity configuration response, where the measurement configuration may be the measurement configuration stored in the aforementioned RRC container. In addition to this, the measurement on the NR frequency configured by the NR base station may be indicated, or may not be indicated.
After receiving the dual connectivity configuration response, the LTE base station may send the measurement configuration of the NR base station to the terminal, and indicate that the terminal retains the measurement configuration on the frequency F1 and the frequency F2, so that the terminal may no longer perform measurement on the frequency F1 and the frequency F2 according to the LTE base station configuration.
In the implementation of the present invention, the frequency allocation range of the present system is determined according to the frequency allocation range of the different system, whether the different system base station is the secondary base station or the primary base station. Therefore, the frequency configuration range of the different system is comprehensively considered in the determination process of the frequency configuration range of the system, so that the frequency of the auxiliary system contained in the frequency configuration range of the system is more reasonable and targeted, the matching degree with the current communication scene is higher, and further, the terminal can be more accurately configured and measured according to the frequency configuration range of the system, and the resources of the communication system can be further saved.
Referring to fig. 3, an embodiment of the present invention further provides a communication system, which may include a base station 31 of the present system, a base station 32 of a different system, and a terminal 33.
Referring to fig. 4, the base station 31 of the present system in fig. 3 may include:
a different-system frequency configuration range receiving unit 41, adapted to receive a different-system frequency configuration range from a different-system base station, so as to determine a secondary system frequency measured by the different-system base station for terminal configuration;
the system frequency configuration range determining unit 42 is adapted to determine a system frequency configuration range according to the inter-system frequency configuration range, where the system frequency configuration range is used to instruct a base station of the system to configure a measured secondary system frequency for a terminal;
a configuration unit 43 adapted to configure the terminal with measurements in said frequency configuration range of the present system;
the terminal 33 (see fig. 3) has accessed the primary system and attempts to access the secondary system in a dual connection manner according to an instruction from the primary system;
the inter-system base station 34 (see fig. 3) is adapted to transmit the inter-system frequency configuration range to the local system base station.
The base station of the present system may be a master base station, the base station of the different system may be an auxiliary base station, the master base station is the base station of the master system, and the auxiliary base station is the base station of the auxiliary system. The communication system in the embodiment of the present invention is further described below with reference to a scenario in which the base station of the present system is a primary base station and the base station of the different system is a secondary base station.
In the above scenario, the present system frequency configuration range determining unit 42 is adapted to determine the present system frequency configuration range outside the inter-system frequency configuration range.
The terminal may record a secondary system access measurement configuration, where the secondary system access measurement configuration is a measurement configuration of a secondary system frequency that is issued by the primary base station to the terminal before the terminal accesses the secondary system, referring to fig. 5, where the primary base station may further include: a reservation indicating unit 51 adapted to indicate the terminal to reserve the secondary system access measurement configuration.
The terminal is suitable for receiving the indication of the main base station, reserving the auxiliary system access measurement configuration, and measuring the frequency within the frequency configuration range of the different system according to the measurement configuration of the auxiliary base station.
The communication system of the present invention will be further described below in a scenario in which the present system base station is a secondary base station and the inter-system base station is a primary base station.
Referring to fig. 6, the frequency configuration range determining unit of the present system may include: a secondary system serving cell frequency determining unit 61 adapted to determine a frequency of a serving cell of the secondary system; a first adding unit 62, adapted to add the frequency of the serving cell to the frequency configuration range of the present system.
Further, the system frequency configuration range determining unit may further include a second adding unit 63, adapted to add an auxiliary system frequency outside the different system frequency configuration range to the system frequency configuration range.
Referring to fig. 7, the secondary base station may further include a present system frequency configuration range transmitting unit 71 and/or a secondary system serving cell frequency transmitting unit 72; wherein, the present system frequency configuration range transmitting unit 71 is adapted to transmit the present system frequency configuration range to the main base station, and the secondary system serving cell frequency transmitting unit 72 is adapted to transmit the frequency of the serving cell of the secondary system to the main base station.
In a specific implementation, the terminal may record an access measurement configuration of the secondary system, where the access measurement configuration of the secondary system is a measurement configuration of a secondary system frequency issued by the primary base station to the terminal before the terminal accesses the secondary system, and the primary base station is further adapted to instruct the terminal to reserve the access measurement configuration of the secondary system.
Further, the terminal may receive the indication of the primary base station, reserve the access measurement configuration of the secondary system, and perform measurement according to the measurement configuration of the secondary base station on the frequency of the serving cell of the secondary system.
In a specific implementation, no matter the current system base station is a secondary base station, the different system base station is a primary base station, or the current system base station is a primary base station, and the different system base station is a secondary base station, a secondary base station measurement configuration may be issued to the terminal through the primary base station, where the secondary base station measurement configuration is a configuration in which the secondary base station performs measurement for indicating the terminal in a different system frequency configuration range or the current system frequency configuration range.
Further, the main base station may issue the secondary base station measurement configuration to the terminal through RRC connection reconfiguration.
The terminal may perform measurement according to the secondary base station configuration on a secondary system frequency at which the secondary base station configures measurement for the terminal in response to receiving the secondary base station measurement configuration. And if the attempt to access the auxiliary system fails, the terminal terminates the measurement according to the configuration of the auxiliary base station.
Or the terminal may also perform measurement according to the secondary base station configuration on a secondary system frequency where the secondary base station configures measurement for the terminal in response to the success of attempting to access the secondary system.
In a scenario where the base station of the present system is a primary base station and the base station of the different system is a secondary base station, or the base station of the present system is a secondary base station and the base station of the different system is a primary base station, the terms, principles, specific implementation, and beneficial effects related to the communication system in the embodiment of the present invention may be referred to in the corresponding description of the dual connectivity measurement configuration method, and are not described herein again.
From the perspective of the terminal, the terminal may receive the measurement configuration of the primary base station for measurement, and receive the measurement configuration of the secondary base station for measurement, and if the measurement configured by the primary base station and the secondary base station exceeds the upper limit of the measurement capability of the terminal, the measurement may be preferentially performed according to the measurement configuration of the secondary base station. In this case, the base station of the present system may be the primary base station or the secondary base station.
The terminal can also reserve the auxiliary system access measurement configuration according to the indication; and if the terminal is disconnected with the auxiliary base station, the terminal recovers the auxiliary system access measurement configuration for measurement.
The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes the steps of the foregoing dual connectivity measurement configuration method when running the computer instruction.
The embodiment of the present invention further provides a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are executed, the steps of the foregoing dual connectivity measurement configuration method are executed.
The computer readable storage medium may be an optical disc, a mechanical hard disk, a solid state hard disk, etc.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (18)

1. A dual connectivity measurement configuration method, comprising:
receiving a different system frequency configuration range from a different system base station to determine a secondary system frequency measured by the different system base station for the terminal configuration;
determining a frequency configuration range of the system according to the frequency configuration range of the different system, wherein the frequency configuration range of the system is used for indicating a base station of the system to configure a measured auxiliary system frequency for a terminal;
configuring the measurement in the frequency configuration range of the system for the terminal;
the terminal accesses a main system and tries to access the auxiliary system in a dual-connection mode according to an instruction from the main system; the base station of the system is a main base station, the base station of the different system is an auxiliary base station, the main base station is a base station of the main system, and the auxiliary base station is a base station of the auxiliary system;
the determining the frequency configuration range of the system according to the frequency configuration range of the different system comprises: determining a frequency of a serving cell of the secondary system; adding the frequency of the service cell to the frequency configuration range of the system, and adding the auxiliary system frequency outside the frequency configuration range of the different system to the frequency configuration range of the system.
2. The dual connectivity measurement configuration method of claim 1, further comprising: and transmitting the frequency configuration range of the system to a main base station.
3. The dual connectivity measurement configuration method of claim 1, further comprising: and transmitting the frequency of the serving cell of the secondary system to the main base station.
4. The method according to claim 1, wherein the measurement configuring the terminal in the frequency configuration range of the present system is performed after the attempt to access the secondary system is successful.
5. A communication system, comprising: the system comprises a local system base station, a heterogeneous system base station and a terminal;
the base station of the present system includes:
the different-system frequency configuration range receiving unit is suitable for receiving a different-system frequency configuration range from a different-system base station so as to determine an auxiliary system frequency measured by the different-system base station for terminal configuration;
the system frequency configuration range determining unit is suitable for determining the system frequency configuration range according to the different system frequency configuration range, and the system frequency configuration range is used for indicating the system base station to configure and measure the auxiliary system frequency for the terminal;
the configuration unit is suitable for configuring the terminal with the measurement in the frequency configuration range of the system;
the terminal has access to the main system and tries to access to the auxiliary system in a double-connection mode according to the indication from the main system;
the inter-system base station is suitable for sending the inter-system frequency configuration range to the local system base station;
the base station of the system is a main base station, the base station of the different system is an auxiliary base station, the main base station is a base station of the main system, and the auxiliary base station is a base station of the auxiliary system;
the frequency configuration range determining unit of the present system includes: a secondary system serving cell frequency determining unit adapted to determine a frequency of a serving cell of the secondary system; a first adding unit, adapted to add the frequency of the serving cell to the frequency configuration range of the present system; and the second adding unit is suitable for adding the auxiliary system frequency out of the frequency configuration range of the different system to the frequency configuration range of the system.
6. The communication system of claim 5, wherein the secondary base station further comprises: and the system frequency configuration range sending unit is suitable for sending the system frequency configuration range to the main base station.
7. The communication system of claim 5, wherein the secondary base station further comprises: and the secondary system serving cell frequency sending unit is suitable for sending the frequency of the serving cell of the secondary system to the main base station.
8. The communication system according to claim 7, wherein the terminal records a secondary system access measurement configuration, the secondary system access measurement configuration is a measurement configuration of a secondary system frequency that the terminal issues to the terminal by the primary base station before accessing the secondary system, and the primary base station is further adapted to instruct the terminal to reserve the secondary system access measurement configuration.
9. The communication system according to claim 8, wherein the terminal is adapted to receive the indication of the primary base station, to reserve the secondary system access measurement configuration, and to perform measurements at the frequency of the serving cell of the secondary system according to the measurement configuration of the secondary base station.
10. The communication system according to any one of claims 6 to 9, wherein a secondary base station measurement configuration is issued to the terminal by the primary base station, and the secondary base station measurement configuration is a configuration in which a secondary base station performs measurement for instructing a terminal in an inter-system frequency configuration range or a local system frequency configuration range.
11. The communication system according to claim 10, wherein the secondary base station measurement configuration is issued to the terminal by RRC connection reconfiguration.
12. The system of claim 10, wherein the terminal performs the measurement according to the secondary base station configuration at a secondary system frequency at which the secondary base station configures the measurement for the terminal in response to receiving the secondary base station measurement configuration.
13. The communication system according to claim 12, wherein if the attempt to access the secondary system fails, the terminal terminates the measurement according to the secondary base station configuration.
14. The communication system of claim 10, wherein the terminal performs the measurement according to the secondary base station configuration on a secondary system frequency on which the secondary base station configures the measurement for the terminal in response to the success of the attempt to access the secondary system.
15. The communication system according to claim 5, wherein the terminal is adapted to receive the measurement configuration of the primary base station for measurement and receive the measurement configuration of the secondary base station for measurement, and if the measurement of the primary base station and the secondary base station configuration exceeds the terminal measurement capability upper limit, the measurement is preferentially performed according to the measurement configuration of the secondary base station.
16. The communication system according to claim 5, wherein the terminal retains the secondary system access measurement configuration according to the indication; and if the terminal is disconnected with the auxiliary base station, the terminal recovers the auxiliary system access measurement configuration for measurement.
17. A base station comprising a memory and a processor, the memory storing a computer program operable on the processor, wherein the processor performs the steps of the dual connectivity measurement configuration method of any of claims 1 to 4 when executing the computer program.
18. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the dual connectivity measurement configuration method of any one of claims 1 to 4.
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