CN111050354B - Method, device, related equipment and storage medium for RRC connection reconfiguration - Google Patents
Method, device, related equipment and storage medium for RRC connection reconfiguration Download PDFInfo
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Abstract
The invention discloses a method, a device, a base station, a terminal and a storage medium for reconfiguring Radio Resource Control (RRC) connection. The method comprises the following steps: the base station determining parameters of a reconfigured Radio Link Control (RLC) layer and/or a Medium Access Control (MAC) layer; generating a MAC Control Element (CE); the MAC CE carries configuration parameters of an RLC layer and/or an MAC layer for configuring the terminal; transmitting the MAC CE to the terminal; the transmitted MAC CE is used for configuring the RLC layer and/or MAC layer related parameters by the terminal.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a method, an apparatus, a related device, and a storage medium for radio resource control (RRC, radio Resource Control) connection reconfiguration.
Background
The third generation partnership project (3 GPP) fifth generation mobile communication technology (5G) New air interface (NR, new Radio) introduces the concept of default data bearer (default DRB) in the service data adaptation protocol (SDAP, service Data Adaptation Protocol) layer, that is, when New quality of service (QoS, quality of Service) flows (flows) or QoS flows requiring remapping do not have appropriate DRB mapping, the New air interface may be mapped to the default DRB for data transmission. On the other hand, in the latest conference progress of the 3GPP radio access network working group 2 (RAN 2, radio Access Network working group 2), it is considered that the default DRB is not always configured by the network side, and it is clearly shown that the behavior of the SDAP is temporarily undefined for those data packets without mapping rules when the default DRB is not established. And, if a new DRB is established using an RRC connection reconfiguration message in order to satisfy QoS flows to be mapped to an appropriate DRB, it causes a great delay.
Disclosure of Invention
In order to solve the existing technical problems, the embodiment of the invention provides a method, a device, related equipment and a storage medium for RRC connection reconfiguration.
The embodiment of the invention provides a method for reconfiguring RRC connection, which is applied to a base station and comprises the following steps:
determining parameters of a reconfiguration Radio Link Control (RLC) layer and/or a Medium Access Control (MAC) layer;
generating a MAC Control Element (CE); the MAC CE carries configuration parameters of an RLC layer and/or an MAC layer for configuring the terminal;
transmitting the MAC CE to the terminal; the transmitted MAC CE is used for configuring the RLC layer and/or MAC layer related parameters by the terminal.
In the above solution, the determining the parameter of the RLC layer and/or the MAC layer includes:
and when determining that the QoS flow cannot be mapped to the existing DRB, determining to reconfigure the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRB.
In the above solution, the determining that the downlink QoS flow cannot be mapped to the existing DRB includes:
determining that the new downlink QoS flow cannot be mapped to the existing DRB;
alternatively, it is determined that an existing QoS flow cannot be mapped onto the mapped DRB.
In the above scheme, the method further comprises:
The MAC CE is identified with a reserved downlink Logical Channel Identification (LCID).
In the above scheme, the generating the MAC CE includes:
and determining the parameter to be changed, setting a number corresponding to the parameter to be changed in the MAC CE, and setting a number of a value at a corresponding value position of the parameter to be changed in the MAC CE.
In the above scheme, the generating the MAC CE includes:
determining a parameter to be changed, and setting a first value in a corresponding position of the parameter to be changed in the MAC CE; and setting a number of the value at the corresponding value position of the parameter to be changed in the MAC CE.
The embodiment of the invention also provides a method for reconfiguring the RRC connection, which is applied to the terminal and comprises the following steps:
receiving an MAC CE sent by a base station;
and carrying out RRC connection reconfiguration according to the configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE.
In the above scheme, the method further comprises:
and identifying the MAC CE by utilizing the reserved downlink LCID.
In the above scheme, the method further comprises:
obtaining a number corresponding to a parameter to be changed in the MAC CE; determining parameters to be changed according to the numbers; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; and determining the value of the parameter to be changed by using the number of the parameter to be changed.
In the above scheme, the method further comprises:
indicating the corresponding position of the parameter to be changed in the MAC CE, obtaining a first value, and determining the parameter to be changed by using the first value; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; and determining the value of the parameter to be changed by using the number of the parameter to be changed.
The embodiment of the invention also provides a device for reconfiguring the RRC connection, which comprises:
a determining unit configured to determine parameters of the reconfigured RLC layer and/or MAC layer;
a configuration unit, configured to generate a MAC CE; the MAC CE carries configuration parameters of an RLC layer and/or an MAC layer for configuring the terminal; and transmitting the MAC CE to the terminal; the transmitted MAC CE is used for configuring the RLC layer and/or MAC layer related parameters by the terminal.
In the above solution, the determining unit is specifically configured to:
and when determining that the QoS flow cannot be mapped to the existing Data Radio Bearer (DRB), determining to reconfigure the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRB.
In the above solution, the configuration unit is further configured to:
and identifying the MAC CE by utilizing the reserved downlink LCID.
In the above solution, the configuration unit is specifically configured to:
Determining a parameter to be changed, setting a number corresponding to the parameter to be changed in an MAC CE, and setting a number of a value at a corresponding value position of the parameter to be changed in the MAC CE;
or,
determining a parameter to be changed, and setting a first value in a corresponding position of the parameter to be changed in the MAC CE; and setting a number of the value at the corresponding value position of the parameter to be changed in the MAC CE.
The embodiment of the invention also provides a device for reconfiguring RRC connection, which comprises:
a receiving unit, configured to receive a MAC CE transmitted by a base station;
and the processing unit is used for carrying out RRC connection reconfiguration according to the configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE.
In the above solution, the processing unit is further configured to:
and identifying the MAC CE by utilizing the reserved downlink LCID.
In the above solution, the processing unit is further configured to:
obtaining a number corresponding to a parameter to be changed in the MAC CE; determining parameters to be changed according to the numbers; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; determining the value of the parameter to be changed by using the number of the parameter to be changed;
or,
indicating the corresponding position of the parameter to be changed in the MAC CE, obtaining a first value, and determining the parameter to be changed by using the first value; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; and determining the value of the parameter to be changed by using the number of the parameter to be changed.
The embodiment of the invention also provides a base station, which comprises:
a first processor for determining parameters for reconfiguring the RLC layer and/or the MAC layer; generating a MAC CE; the MAC CE carries configuration parameters of an RLC layer and/or an MAC layer for configuring the terminal;
a first communication interface for transmitting the MAC CE to the terminal; the transmitted MAC CE is used for configuring the RLC layer and/or MAC layer related parameters by the terminal.
In the above solution, the first processor is specifically configured to:
and when determining that the QoS flow cannot be mapped to the existing Data Radio Bearer (DRB), determining to reconfigure the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRB.
In the above aspect, the first processor is further configured to:
and identifying the MAC CE by utilizing the reserved downlink LCID.
In the above solution, the first processor is specifically configured to:
determining a parameter to be changed, setting a number corresponding to the parameter to be changed in an MAC CE, and setting a number of a value at a corresponding value position of the parameter to be changed in the MAC CE;
or,
determining a parameter to be changed, and setting a first value in a corresponding position of the parameter to be changed in the MAC CE; and setting a number of the value at the corresponding value position of the parameter to be changed in the MAC CE.
The embodiment of the invention also provides a terminal, which comprises:
the second communication interface is used for receiving the MAC CE sent by the base station;
and the second processor is used for carrying out RRC connection reconfiguration according to the configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE.
In the above aspect, the second processor is further configured to:
and identifying the MAC CE by utilizing the reserved downlink LCID.
In the above aspect, the second processor is further configured to:
obtaining a number corresponding to a parameter to be changed in the MAC CE; determining parameters to be changed according to the numbers; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; determining the value of the parameter to be changed by using the number of the parameter to be changed;
or,
indicating the corresponding position of the parameter to be changed in the MAC CE, obtaining a first value, and determining the parameter to be changed by using the first value; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; and determining the value of the parameter to be changed by using the number of the parameter to be changed.
The embodiment of the invention also provides a base station, which comprises: a first processor and a first memory for storing a computer program capable of running on the processor,
The first processor is configured to execute the steps of any method on the base station side when running the computer program.
The embodiment of the invention also provides a terminal, which comprises: a second processor and a second memory for storing a computer program capable of running on the processor,
and the second processor is used for executing any method step on the terminal side when the computer program is run.
The embodiment of the invention also provides a storage medium, on which a computer program is stored, the computer program, when being executed by a processor, realizes the steps of any method at the base station side or realizes the steps of any method at the terminal side.
The embodiment of the invention provides a method, a device, related equipment and a storage medium for RRC connection reconfiguration, wherein a base station determines parameters of a reconfigured RLC layer and/or an MAC layer; generating a MAC CE; the MAC CE carries configuration parameters of an RLC layer and/or an MAC layer for configuring the terminal; and transmitting the MAC CE to the terminal; the terminal performs RRC connection reconfiguration according to the received configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE, and uses the MAC CE to partially replace the RRC connection reconfiguration message without reestablishing a new DRB through the RRC connection reconfiguration message, so that the time delay can be greatly reduced.
Drawings
Fig. 1 is a flowchart of a method for RRC connection reconfiguration at a base station side according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a MAC CE format according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another MAC CE format according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for terminal-side RRC connection reconfiguration according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a method for RRC connection reconfiguration according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an apparatus for RRC connection reconfiguration according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an apparatus for RRC connection reconfiguration according to another embodiment of the present invention;
fig. 8 is a schematic diagram of a base station structure according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a terminal structure according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a system configuration of RRC connection reconfiguration according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
On the one hand, in 5G NR systems, control plane functionality sinking is an important task at present for RAN2 in order to accommodate more demanding latency requirements. Based on the idea of control plane sinking, RAN2 conferences are discussing the introduction of more MAC CEs to implement control functions that previously required RRC signaling to complete. This is because: the MAC layer is closer to the air interface, and compared with RRC signaling, the protocol stack processing delay can be greatly saved.
On the other hand, in long term evolution (LTE, long Term Evolution) systems, the RRC connection reconfiguration message contains a proprietary radio resource configuration, including configuration of parameters proprietary to each higher layer protocol stack layer (packet data convergence protocol (PDCP), radio link control protocol (RLC), medium access control protocol (MAC)). Unlike the LTE system, in the RRC reconfiguration message of the 5G NR system, the original proprietary radio resource configuration is divided into two parts of radio bearer configuration (radio bearconfig) for the configuration of SDAP and PDCP layer proprietary parameters and cell group configuration (CellGroupConfig) for the configuration of RLC and MAC layer proprietary parameters.
Therefore, in order to enable an already established DRB to more effectively support a new QoS flow without changing a mapping rule, an RRC connection reconfiguration message may be replaced with a MAC CE, i.e., parameters of an RLC-Beaerer configuration serving the DRB are changed by the MAC CE, without re-establishing a new DRB through the RRC connection reconfiguration message.
Based on this, in various embodiments of the present invention, when it is necessary to reconfigure parameters of the RLC layer and/or the MAC layer, the base station transmits the parameters of the RLC layer and/or the MAC layer, which are necessary to be configured, to the terminal using the MAC CE.
In the embodiment of the invention, as the MAC CE is used to replace the RRC connection reconfiguration message partially, the established DRB can support the new QoS flow more effectively without re-establishing the new DRB through the RRC connection reconfiguration message on the premise of not changing the mapping rule by changing the parameter of the RLC-Beeer configuration for providing service for the DRB, thus greatly reducing the time delay.
The embodiment of the invention provides a method for reconfiguring RRC connection, which is applied to a base station, as shown in fig. 1, and comprises the following steps:
step 101: determining parameters of the reconfiguration RLC layer and/or MAC layer;
here, when the scheme of the embodiment of the present invention is applied to a 5G system, the base station may be a next generation node B (gNB).
In practical applications, the base station needs to determine whether to reconfigure parameters of the RLC layer and/or the MAC layer according to the scenario in which the base station is located, that is, the base station needs to determine when to use the MAC CE to implement RRC connection reconfiguration according to the scenario in which the base station is located (which can also be understood as according to a specific implementation).
In the embodiment of the present invention, RRC connection reconfiguration may be performed without changing mapping rule, so that an established DRB may support new QoS flow more effectively, so that the scheme of the embodiment of the present invention may be suitable for a scenario in which QoS flow maps to an appropriate DRB.
Based on this, the specific implementation of step 101 may include:
and when determining that the QoS flow cannot be mapped to the existing DRB, determining to reconfigure the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRB.
Here, in actual application, the scene of determining that QoS flow cannot be mapped onto an existing DRB may include the following two scenes:
in the first scenario, the new downstream QoS flow cannot be mapped onto the existing DRB
Specifically, when a new downlink QoS flow arrives at the base station side, the SDAP layer at the base station side needs to determine whether the new downlink QoS flow can be mapped onto an existing appropriate DRB (including an default DRB), and if all existing DRBs including the default DRB cannot well carry the new downlink QoS flow, the base station side selects an existing DRB (including the default DRB) as a DRB mapped by the new downlink QoS flow according to an algorithm.
In this scenario, when it is determined that the new downlink QoS flow cannot be mapped onto the existing DRB, the base station considers that the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRB need to be reconfigured, i.e., the base station determines to reconfigure the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRB.
In the second scenario, existing QoS flows cannot be mapped onto mapped DRBs
That is, existing QoS flows are remapped for DRB
Specifically, when the existing QoS flows need to be remapped for DRBs, the base station side SDAP layer may modify parameters corresponding to the mapped DRBs for the QoS requirements of each QoS flow without changing the mapping rule.
In this scenario, when determining that the existing QoS flow is used for remapping the DRBs, the base station considers that the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRBs need to be reconfigured, i.e. the base station determines to reconfigure the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRBs.
Of course, in practical application, besides the two scenarios described above, that is, in addition to determining that QoS flow cannot be mapped onto an existing DRB, other scenarios of determining that parameters of the RLC layer and/or MAC layer are reconfigured, that is, any scenario that can only change parameters contained in CellGroupConfig is applicable.
Step 102: generating a MAC CE;
here, the MAC CE carries configuration parameters of the RLC layer and/or the MAC layer configuring the terminal.
In practical application, the base station determines the content of parameters to be changed, which are included in the MAC CE and need to be indicated to the terminal, according to the scene, in other words, the base station determines parameters of the reconfigured RLC layer and/or MAC layer, that is, configuration parameters of the RLC layer and/or MAC layer configuring the terminal, according to the scene.
For example, for the first scenario, the base station side modifies RLC-Bearer parameters corresponding to the DRBs to make the selected DRBs meet the requirement of carrying newly arrived downlink QoS flows while continuing to meet the existing QoS flows mapped to the DRBs. For example, by changing the parameters such as the logical channel priority, the priority bit rate (priority bit rate), the maximum bucket deep time (bucket duration) and the like in the logical channel configuration (logicalChannelConfig) corresponding to the RLC-beer, and including the parameters in the new MAC CE, the scheduling of the MAC layer is affected in a manner of configuring the terminal side, so that the corresponding DRB becomes a proper mapping object of the newly arrived downlink QoS flow.
For the second scenario, the SDAP layer at the base station side may modify parameters corresponding to the mapped DRBs for the QoS requirement of each QoS flow on the premise of not changing the mapping rule, for example, may change parameters such as logical channel priority, prioritisedBitRate, bucketSizeDuration and the like in the LogicalChannelConfig corresponding to the RLC-Bearer, and include the parameters in the new MAC CE to configure the terminal side, so as to implement the remapping function.
It should be noted that: in the embodiment of the invention, the MAC CE name is not defined forcefully, but only the realized function is defined.
Here, since the MAC CE is not available in the related art, the MAC CE may be referred to as a new MAC CE.
To identify the new MAC CE and to save resources, it may be identified by the terminal by using the existing one of the reserved downstream.
Based on this, in an embodiment, the method may further include:
and the base station identifies the MAC CE by utilizing the reserved downlink LCID.
Since the MAC CE is a new MAC CE, a format of the MAC CE needs to be defined.
Based on this, the embodiment of the present invention provides two formats. Fig. 2 is a schematic diagram of a format of a MAC CE. In fig. 2, the first byte represents a bitmap (bitmap), R represents a reserved bit, pn represents whether the corresponding parameter is represented in the following V field, and Vn represents the number of the value after the corresponding parameter is changed if Pn is set to be valid.
When the MAC format shown in fig. 2 is employed, the method may further include:
determining a parameter to be changed, and setting a first value in a corresponding position of the parameter to be changed in the MAC CE; and setting a number of the value at the corresponding value position of the parameter to be changed in the MAC CE.
Wherein, the corresponding position indicating the parameter to be changed refers to Pn in fig. 2, and the corresponding value position indicating the parameter to be changed refers to Vn in fig. 2.
Fig. 3 is another format diagram of a MAC CE. In fig. 3, pm represents the number corresponding to the parameter to be changed, and Vm represents the number of the value after the corresponding parameter is changed.
When the MAC format shown in fig. 3 is employed, the method may further include:
and determining the parameter to be changed, setting a number corresponding to the parameter to be changed in the MAC CE, and setting a number of a value at a corresponding value position of the parameter to be changed in the MAC CE.
In practical application, one of the above formats may be selected as a MAC CE format as required.
It should be noted that: in practical application, the length of the sub-protocol data unit (sub-PDU) corresponding to the MAC CE may be long, or may be designed to be a fixed length according to different scenes, which is not limited in the embodiment of the present invention.
The following illustrates how the MAC CE is set.
The LogicalChannelConfig Information Element (IE) in 3GPP latest version 38.331 contains the parameter bucketSizeDuration, which takes the following values:
bucketSizeDuration ENUMERATED{ms5,ms10,ms20,ms50,ms100,ms150,ms300,ms500,ms1000,spare7,spare6,spare5,spare4,spare3,spare2,spare1}。
the location of Pm bitmap (format shown in fig. 2) or the number value of Pm (format shown in fig. 3) corresponding to the bucketSizeDuration parameter can be fixed between the base station and the terminal in a pre-defined manner. For example, the bucketSizeduration may be specified by P in bitmap 2 To indicate or correspond to the number of Pm being 2 (binary indication in the Pm field being 0010), and the value of this parameter corresponding to the value field being V 2 . The above parameter bucketSizeduration has a total of 16 values, thus V 2 The field may use 4 bits to represent the number corresponding to all values. If the value of the bucketSizeduration needs to be changed to ms100 (corresponding value number 12, binary 1100), for the first possible design, the corresponding P 2 The bitmap field is set to 1 and V 2 The domain value is 1100; for the second possible design, correspond to P 2 The field value is 0010, and V 2 The field value is 1100. Terminal on-line connectionAfter the MAC CE is received, the value of the bucketSizeduration parameter is changed to ms100 through analyzing the content in the MAC CE, so that the quick configuration of the base station to the corresponding parameters of the terminal is realized.
Step 103: and sending the MAC CE to the terminal.
Here, the transmitted MAC CE is used for the terminal to configure the RLC layer and/or the MAC layer related parameters. Specifically, the transmitted MAC CE is used for the terminal to configure the RLC layer and/or the related parameters of the MAC layer indicated in the MAC CE.
That is, in the embodiment of the present invention, the parameters in CellGroupConfig are configured by a new MAC CE.
Correspondingly, the embodiment of the invention also provides a method for reconfiguring the RRC connection, which is applied to the terminal, as shown in fig. 4, and comprises the following steps:
step 401: receiving an MAC CE sent by a base station;
step 402: and carrying out RRC connection reconfiguration according to the configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE.
Wherein, in an embodiment, the method may further comprise:
and identifying the MAC CE by utilizing the reserved downlink LCID.
In an embodiment, when the base station uses the MAC CE format shown in fig. 2, the method may further include:
indicating the corresponding position of the parameter to be changed in the MAC CE, obtaining a first value, and determining the parameter to be changed by using the first value; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; and determining the value of the parameter to be changed by using the number of the parameter to be changed.
In an embodiment, when the base station uses the MAC CE format shown in fig. 3, the method may further include:
obtaining a number corresponding to a parameter to be changed in the MAC CE; determining parameters to be changed according to the numbers; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; and determining the value of the parameter to be changed by using the number of the parameter to be changed.
The embodiment of the invention also provides a method for reconfiguring the RRC connection, as shown in fig. 5, which comprises the following steps:
step 501: the base station determines parameters of the reconfiguration RLC layer and/or the MAC layer;
step 502: the base station generates a MAC CE;
here, the MAC CE carries configuration parameters of the RLC layer and/or the MAC layer configuring the terminal.
Step 503: the base station sends the MAC CE to the terminal;
here, the transmitted MAC CE is used for the terminal to configure the RLC layer and/or the MAC layer related parameters.
Step 504: the terminal receives the MAC CE sent by the base station; and performing RRC connection reconfiguration according to the configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE.
It should be noted that: the specific processing procedures of the base station and the terminal are described in detail above, and are not described in detail here.
The base station determines the parameters of the reconfiguration RLC layer and/or the MAC layer; generating a MAC CE; the MAC CE carries configuration parameters of an RLC layer and/or an MAC layer for configuring the terminal; and transmitting the MAC CE to the terminal; the terminal performs RRC connection reconfiguration according to the received configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE, and uses the MAC CE to partially replace the RRC connection reconfiguration message without re-establishing a new DRB through the RRC connection reconfiguration message, so that the time delay can be greatly reduced, and the rapid configuration of the parameters in the CellGroupConfig can be realized.
In addition, the reserved downlink LCID is used to identify the MAC CE, so that the terminal can identify the MAC CE.
In order to implement the method of the embodiment of the present invention, the embodiment of the present invention further provides an apparatus for RRC connection reconfiguration, which is disposed on a base station, as shown in fig. 6, and includes:
a determining unit 61 for determining parameters of the reconfigured RLC layer and/or MAC layer;
a configuration unit 62 for generating a MAC CE; the MAC CE carries configuration parameters of an RLC layer and/or an MAC layer for configuring the terminal; and transmitting the MAC CE to the terminal; the transmitted MAC CE is used for configuring the RLC layer and/or MAC layer related parameters by the terminal.
In the embodiment of the present invention, RRC connection reconfiguration may be performed without changing mapping rule, so that an established DRB may support new QoS flow more effectively, so that the scheme of the embodiment of the present invention may be suitable for a scenario in which QoS flow maps to an appropriate DRB.
Based on this, the determining unit 61 is specifically configured to:
and when determining that the QoS flow cannot be mapped to the existing Data Radio Bearer (DRB), determining to reconfigure the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRB.
Here, in actual application, the scene where the determining unit 61 determines that QoS flow cannot be mapped onto an existing DRB may include the following two scenes:
in the first scenario, the new downlink QoS flow cannot be mapped onto the existing DRB;
in a second scenario, existing QoS flows are determined for the remapping of DRBs.
Here, since the MAC CE is not available in the related art, the MAC CE may be referred to as a new MAC CE.
To identify the new MAC CE and to save resources, it may be identified by the terminal by using the existing one of the reserved downstream.
Based on this, in an embodiment, the configuration unit 62 is further configured to:
and identifying the MAC CE by utilizing the reserved downlink LCID.
Since the MAC CE is a new MAC CE, a format of the MAC CE needs to be defined.
Based on this, the embodiment of the present invention provides two formats, as shown in fig. 2 and 3, respectively.
When the MAC format shown in fig. 2 is adopted, the configuration unit 62 is specifically configured to:
determining a parameter to be changed, and setting a first value in a corresponding position of the parameter to be changed in the MAC CE; and setting a number of the value at the corresponding value position of the parameter to be changed in the MAC CE.
When the MAC format shown in fig. 3 is adopted, the configuration unit 62 is specifically configured to:
determining a parameter to be changed, setting a number corresponding to the parameter to be changed in an MAC CE, and setting a number of a value at a corresponding value position of the parameter to be changed in the MAC CE;
in practice, the determining unit 61 may be implemented by a processor in the RRC connection reconfigured device; the configuration unit 62 may be implemented by a processor in the RRC connection reconfiguration device in combination with a communication interface.
In order to implement the method at the terminal side of the embodiment of the present invention, the embodiment of the present invention further provides an apparatus for RRC connection reconfiguration, which is disposed on a terminal, as shown in fig. 7, and includes:
a receiving unit 71, configured to receive a MAC CE transmitted by a base station;
and a processing unit 72, configured to perform RRC connection reconfiguration according to the configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE.
Wherein, in an embodiment, the processing unit 72 is further configured to:
and identifying the MAC CE by utilizing the reserved downlink LCID.
In an embodiment, when the base station uses the MAC CE format shown in fig. 2, the processing unit 72 is further configured to:
indicating the corresponding position of the parameter to be changed in the MAC CE, obtaining a first value, and determining the parameter to be changed by using the first value; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; and determining the value of the parameter to be changed by using the number of the parameter to be changed.
In an embodiment, when the base station uses the MAC CE format shown in fig. 3, the processing unit 72 is further configured to:
obtaining a number corresponding to a parameter to be changed in the MAC CE; determining parameters to be changed according to the numbers; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; determining the value of the parameter to be changed by using the number of the parameter to be changed;
in practical applications, the receiving unit 71 may be implemented by a communication interface in the RRC connection reconfiguration device; the processing unit 72 may be implemented by a processor in an RRC connection reconfiguration device.
It should be noted that: in the RRC connection reconfiguration device provided in the foregoing embodiment, only the division of each program module is used for illustration, and in practical application, the process allocation may be performed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules, so as to complete all or part of the processes described above. In addition, the apparatus for RRC connection reconfiguration provided in the foregoing embodiments and the method embodiment for RRC connection reconfiguration belong to the same concept, and detailed implementation procedures of the apparatus for RRC connection reconfiguration are referred to in the method embodiment, which is not described herein again.
Based on the hardware implementation of the program modules, and in order to implement the method of the embodiment of the present invention, the embodiment of the present invention further provides a base station, as shown in fig. 8, the base station 80 includes:
a first communication interface 81 capable of information interaction with other devices;
the first processor 82 is connected to the first communication interface 81 to implement information interaction with the terminal, and is configured to execute the methods provided by one or more technical solutions on the base station side when running the computer program. And the computer program is stored on the first memory 83.
Specifically, a first processor 82 for determining parameters for reconfiguring the RLC layer and/or the MAC layer; generating a MAC CE; the MAC CE carries configuration parameters of an RLC layer and/or an MAC layer for configuring the terminal;
a first communication interface 81 for transmitting the MAC CE to the terminal; the transmitted MAC CE is used for configuring the RLC layer and/or MAC layer related parameters by the terminal.
In one embodiment, the first processor 82 is specifically configured to:
and when determining that the QoS flow cannot be mapped to the existing Data Radio Bearer (DRB), determining to reconfigure the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRB.
Here, in practical application, the scenario where the first processor 82 determines that QoS flow cannot be mapped onto an existing DRB may include the following two scenarios:
in the first scenario, the new downlink QoS flow cannot be mapped onto the existing DRB;
in a second scenario, existing QoS flows are determined for the remapping of DRBs.
In an embodiment, the first processor 82 is further configured to:
and identifying the MAC CE by utilizing the reserved downlink LCID.
In one embodiment, the first processor 82 is specifically configured to:
determining a parameter to be changed, setting a number corresponding to the parameter to be changed in an MAC CE, and setting a number of a value at a corresponding value position of the parameter to be changed in the MAC CE;
or,
determining a parameter to be changed, and setting a first value in a corresponding position of the parameter to be changed in the MAC CE; and setting a number of the value at the corresponding value position of the parameter to be changed in the MAC CE.
It should be noted that: the specific processing procedures of the first processor 82 and the first communication interface 81 are described in the method embodiment, and are not described herein.
Of course, in practice, the various components in the base station 80 are coupled together by a bus system 84. It is understood that the bus system 84 is used to enable connected communications between these components. The bus system 84 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled as bus system 84 in fig. 8.
The first memory 83 in the embodiment of the present invention is used to store various types of data to support the operation of the base station 80. Examples of such data include: any computer program for operation on the base station 80.
The method disclosed in the above embodiment of the present invention may be applied to the first processor 82 or implemented by the first processor 82. The first processor 82 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method described above may be performed by instructions in the form of integrated logic circuits or software in hardware in the first processor 82. The first processor 82 may be a general purpose processor, a digital signal processor (DSP, digital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The first processor 82 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the invention can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the first memory 83, said first processor 82 reading information in the first memory 83, in combination with its hardware performing the steps of the method as described above.
In an exemplary embodiment, the base station 80 may be implemented by one or more application specific integrated circuits (ASICs, application Specific Integrated Circuit), DSPs, programmable logic devices (PLDs, programmable Logic Device), complex programmable logic devices (CPLDs, complex Programmable Logic Device), field Programmable Gate Arrays (FPGAs), field-Programmable Gate Array), general purpose processors, controllers, microcontrollers (MCUs, micro Controller Unit), microprocessors (microprocessors), or other electronic elements for performing the aforementioned methods.
Based on the hardware implementation of the program modules, and in order to implement the method at the terminal side in the embodiment of the present invention, the embodiment of the present invention further provides a terminal, as shown in fig. 9, where the terminal 90 includes:
a second communication interface 91 capable of information interaction with the base station;
and the second processor 92 is connected with the second communication interface 91 to realize information interaction with the base station, and is used for executing the methods provided by one or more technical schemes on the terminal side when running the computer program. And the computer program is stored on the second memory 93.
Specifically, the second communication interface 91 is configured to receive a MAC CE sent by a base station;
The second processor 92 is configured to perform RRC connection reconfiguration according to configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE.
In an embodiment, the second processor 92 is further configured to:
and identifying the MAC CE by utilizing the reserved downlink LCID.
In an embodiment, the second processor 92 is further configured to:
obtaining a number corresponding to a parameter to be changed in the MAC CE; determining parameters to be changed according to the numbers; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; determining the value of the parameter to be changed by using the number of the parameter to be changed;
or,
indicating the corresponding position of the parameter to be changed in the MAC CE, obtaining a first value, and determining the parameter to be changed by using the first value; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; and determining the value of the parameter to be changed by using the number of the parameter to be changed.
It should be noted that: the specific processing procedures of the second processor 92 and the second communication interface 91 are described in the method embodiment, and are not described herein.
Of course, in actual practice, the various components in terminal 90 are coupled together by bus system 94. It is understood that the bus system 94 is used to enable connected communication between these components. The bus system 94 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled as bus system 94 in fig. 9.
The second memory 93 in the embodiment of the present invention is used to store various types of data to support the operation of the terminal 90. Examples of such data include: any computer program for operation on the terminal 90.
The method disclosed in the above embodiment of the present invention may be applied to the second processor 92 or implemented by the second processor 92. The second processor 92 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the method described above may be performed by instructions in the form of integrated logic circuits or software in hardware in the second processor 92. The second processor 92 described above may be a general purpose processor, DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 92 may implement or perform the methods, steps and logic blocks disclosed in embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the invention can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 93, said second processor 92 reading information in the second memory 93, in combination with its hardware performing the steps of the method as described above.
In an exemplary embodiment, the terminal 90 can be implemented by one or more ASIC, DSP, PLD, CPLD, FPGA, general-purpose processors, controllers, MCU, microprocessor, or other electronic elements for performing the foregoing methods.
It is to be understood that the memories (the first memory 83, the second memory 93) of the embodiment of the present invention may be volatile memories or nonvolatile memories, and may include both volatile and nonvolatile memories. Wherein the nonvolatile Memory may be Read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable programmable Read Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory), magnetic random access Memory (FRAM, ferromagnetic random access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk Read Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). The memory described by embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.
In order to implement the method of the embodiment of the present invention, the embodiment of the present invention further provides a system for RRC connection reconfiguration, as shown in fig. 10, where the system includes:
a base station 101 for determining parameters for reconfiguring the RLC layer and/or the MAC layer; generating a MAC CE; the MAC CE carries configuration parameters of the RLC layer and/or the MAC layer configuring the terminal 102; and transmitting the MAC CE to the terminal 102; the sent MAC CE is used for the terminal to configure the related parameters of the RLC layer and/or the MAC layer;
a terminal 102 for receiving the transmitted MAC CE of the base station 101; and performing RRC connection reconfiguration according to the configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE.
It should be noted that: the specific processing procedures of the base station 101 and the terminal 102 are described in detail above, and will not be described in detail here.
In an exemplary embodiment, the present invention further provides a storage medium, i.e. a computer storage medium, in particular a computer readable storage medium, for example comprising a first memory 83 storing a computer program executable by the first processor 82 of the base station 80 for performing the steps of the aforementioned base station side method. For example, further comprises a second memory 93 storing a computer program executable by the second processor 92 of the terminal 90 to perform the steps of the terminal-side method described above. The computer readable storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM.
It should be noted that: the technical schemes described in the embodiments of the present invention may be arbitrarily combined without any collision.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (24)
1. A method of radio resource control, RRC, connection reconfiguration, applied to a base station, the method comprising:
determining parameters of a reconfiguration Radio Link Control (RLC) layer and/or a Medium Access Control (MAC) layer;
generating a MAC control unit CE; the MAC CE carries configuration parameters of an RLC layer and/or an MAC layer for configuring the terminal;
transmitting the MAC CE to the terminal; the sent MAC CE is used for the terminal to configure the related parameters of the RLC layer and/or the MAC layer; wherein,,
the determining to reconfigure parameters of the RLC layer and/or the MAC layer includes:
when it is determined that the quality of service flow QoS flow cannot be mapped onto an existing data radio bearer DRB, it is determined to reconfigure parameters of an RLC layer and/or a MAC layer corresponding to the existing DRB.
2. The method of claim 1, wherein the determining that QoS flows cannot be mapped onto existing DRBs comprises:
determining that the new downlink QoS flow cannot be mapped to the existing DRB;
Alternatively, it is determined that an existing QoS flow cannot be mapped onto the mapped DRB.
3. The method according to claim 1, wherein the method further comprises:
and identifying the MAC CE by utilizing the reserved downlink logical channel identification LCID.
4. The method of claim 1, wherein the generating the MAC CE comprises:
and determining the parameter to be changed, setting a number corresponding to the parameter to be changed in the MAC CE, and setting a number of a value at a corresponding value position of the parameter to be changed in the MAC CE.
5. The method of claim 1, wherein the generating the MAC CE comprises:
determining a parameter to be changed, and setting a first value in a corresponding position of the parameter to be changed in the MAC CE; and setting a number of the value at the corresponding value position of the parameter to be changed in the MAC CE.
6. A method for RRC connection reconfiguration, applied to a terminal, the method comprising:
receiving an MAC CE sent by a base station;
performing RRC connection reconfiguration according to configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE; wherein,,
and the MAC CE is sent when the base station determines that the QoS flow cannot be mapped to the existing DRB and determines to reconfigure the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRB.
7. The method of claim 6, wherein the method further comprises:
and identifying the MAC CE by utilizing the reserved downlink LCID.
8. The method of claim 6, wherein the method further comprises:
obtaining a number corresponding to a parameter to be changed in the MAC CE; determining parameters to be changed according to the numbers; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; and determining the value of the parameter to be changed by using the number of the parameter to be changed.
9. The method of claim 6, wherein the method further comprises:
indicating the corresponding position of the parameter to be changed in the MAC CE, obtaining a first value, and determining the parameter to be changed by using the first value; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; and determining the value of the parameter to be changed by using the number of the parameter to be changed.
10. An apparatus for RRC connection reconfiguration, comprising:
a determining unit configured to determine parameters of the reconfigured RLC layer and/or MAC layer;
a configuration unit, configured to generate a MAC CE; the MAC CE carries configuration parameters of an RLC layer and/or an MAC layer for configuring the terminal; and transmitting the MAC CE to the terminal; the sent MAC CE is used for the terminal to configure the related parameters of the RLC layer and/or the MAC layer; wherein,,
The determining unit is specifically configured to:
when it is determined that the quality of service flow QoS flow cannot be mapped onto an existing data radio bearer DRB, it is determined to reconfigure parameters of an RLC layer and/or a MAC layer corresponding to the existing DRB.
11. The apparatus of claim 10, wherein the configuration unit is further configured to:
and identifying the MAC CE by utilizing the reserved downlink LCID.
12. The apparatus according to claim 10, wherein the configuration unit is specifically configured to:
determining a parameter to be changed, setting a number corresponding to the parameter to be changed in an MAC CE, and setting a number of a value at a corresponding value position of the parameter to be changed in the MAC CE;
or,
determining a parameter to be changed, and setting a first value in a corresponding position of the parameter to be changed in the MAC CE; and setting a number of the value at the corresponding value position of the parameter to be changed in the MAC CE.
13. An apparatus for RRC connection reconfiguration, comprising:
a receiving unit, configured to receive a MAC CE transmitted by a base station;
a processing unit, configured to perform RRC connection reconfiguration according to configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE; wherein,,
and the MAC CE is sent when the base station determines that the QoS flow cannot be mapped to the existing DRB and determines to reconfigure the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRB.
14. The apparatus of claim 13, wherein the processing unit is further configured to:
and identifying the MAC CE by utilizing the reserved downlink LCID.
15. The apparatus of claim 13, wherein the processing unit is further configured to:
obtaining a number corresponding to a parameter to be changed in the MAC CE; determining parameters to be changed according to the numbers; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; determining the value of the parameter to be changed by using the number of the parameter to be changed;
or,
indicating the corresponding position of the parameter to be changed in the MAC CE, obtaining a first value, and determining the parameter to be changed by using the first value; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; and determining the value of the parameter to be changed by using the number of the parameter to be changed.
16. A base station, comprising:
a first processor for determining parameters for reconfiguring the RLC layer and/or the MAC layer; generating a MAC CE; the MAC CE carries configuration parameters of an RLC layer and/or an MAC layer for configuring the terminal;
A first communication interface for transmitting the MAC CE to the terminal; the sent MAC CE is used for the terminal to configure the related parameters of the RLC layer and/or the MAC layer; wherein,,
the first processor is specifically configured to:
and when determining that the QoS flow cannot be mapped to the existing Data Radio Bearer (DRB), determining to reconfigure the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRB.
17. The base station of claim 16, wherein the first processor is further configured to:
and identifying the MAC CE by utilizing the reserved downlink LCID.
18. The base station of claim 16, wherein the first processor is specifically configured to:
determining a parameter to be changed, setting a number corresponding to the parameter to be changed in an MAC CE, and setting a number of a value at a corresponding value position of the parameter to be changed in the MAC CE;
or,
determining a parameter to be changed, and setting a first value in a corresponding position of the parameter to be changed in the MAC CE; and setting a number of the value at the corresponding value position of the parameter to be changed in the MAC CE.
19. A terminal, comprising:
the second communication interface is used for receiving the MAC CE sent by the base station;
A second processor, configured to perform RRC connection reconfiguration according to configuration parameters of the RLC layer and/or the MAC layer carried in the MAC CE; wherein,,
and the MAC CE is sent when the base station determines that the QoS flow cannot be mapped to the existing DRB and determines to reconfigure the parameters of the RLC layer and/or the MAC layer corresponding to the existing DRB.
20. The terminal of claim 19, wherein the second processor is further configured to:
and identifying the MAC CE by utilizing the reserved downlink LCID.
21. The terminal of claim 19, wherein the second processor is further configured to:
obtaining a number corresponding to a parameter to be changed in the MAC CE; determining parameters to be changed according to the numbers; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; determining the value of the parameter to be changed by using the number of the parameter to be changed;
or,
indicating the corresponding position of the parameter to be changed in the MAC CE, obtaining a first value, and determining the parameter to be changed by using the first value; the number of the parameter value to be changed is obtained at the position of the parameter value in the MAC CE; and determining the value of the parameter to be changed by using the number of the parameter to be changed.
22. A base station, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,
wherein the first processor is adapted to perform the steps of the method of any of claims 1 to 5 when the computer program is run.
23. A terminal, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,
wherein the second processor is adapted to perform the steps of the method of any of claims 6 to 9 when the computer program is run.
24. A storage medium having stored thereon a computer program, which when executed by a processor, performs the steps of the method of any of claims 1 to 5 or performs the steps of the method of any of claims 6 to 9.
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