CN114501557A

CN114501557A - Secondary cell configuration method, device and equipment

Info

Publication number: CN114501557A
Application number: CN202011256431.6A
Authority: CN
Inventors: 王茂吉; 吴兆礼
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2022-05-13
Anticipated expiration: 2040-11-11
Also published as: CN114501557B

Abstract

The invention provides a method, a device and equipment for configuring a secondary cell, wherein the method comprises the following steps: receiving a switching request message sent by a source base station, wherein the switching request message carries channel quality parameters of a source cell; when the auxiliary cell to be added is determined to exist, the maximum message length when the success rate of the source base station sending the switching command message to the UE reaches a set threshold value is determined according to the channel quality parameters; determining whether the total message length after the auxiliary cell information is added in the switching command message is not more than the maximum message length or not according to the configuration information of the auxiliary cell; and if so, indicating the source base station to send a switching command message carrying the auxiliary cell information to the UE by sending a switching request confirmation message carrying the auxiliary cell information. By using the method of the invention, when the success rate of sending the switching command message reaches the preset threshold value, the auxiliary cell can be added, the success rate of receiving the switching command message by the UE is improved, and the occupation of air interface resources and the switching time delay are reduced.

Description

Secondary cell configuration method, device and equipment

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, and a device for configuring a secondary cell.

Background

In a wireless communication system, in order to improve User perception and enable a UE (User Equipment) to acquire an upload rate and a download rate as high as possible, a Carrier Aggregation (CA) is introduced from LTE (Long Term Evolution) and an NR (New Radio) is used. The CA additionally configures one or more SCELLs (Secondary cells) for the UE, so that the UE can use bandwidth resources of multiple cells to obtain higher upload and download rates.

In the prior art, in order to enable the UE to continuously use the CA during the connected state to obtain high user perception, when a cell handover occurs during a user moving process, the cell is directly configured for the UE in the handover command message, and the cell is directly configured in the handover command message, which increases the size of the handover command message. The UE is generally interfered by the neighboring cells with the same frequency in the handover area, the channel quality is poor, and a large air interface signaling message has many impacts:

(1) when the channel quality is poor, a very low MCS (Modulation and Coding Scheme, Modulation and Coding strategy) level needs to be used, and the same size of an air interface signaling message may occupy more PRBs (physical resource blocks). Taking NR as an example, a 600-byte air interface signaling message needs to occupy approximately 120 PRBs when the MCS level is 1, and needs to occupy approximately 160 PRBs when the MCS level is 0, which brings a great load to air interface resources. Each additional SCELL carried in the handover command increases the size of the handover command by approximately 60%, further increasing the load of the air interface resources.

(2) If the current remaining PRB resources of a timeslot SLOT cannot carry a handover command message, the base station will divide the handover command message into multiple fragments, and transmit the multiple SLOTs on the air interface, thereby causing the increase of the time delay on the air interface.

(3) The more fragmentation, the greater the probability of message transmission failure at poor channel quality.

Disclosure of Invention

The invention provides a method, a device and equipment for configuring an auxiliary cell, which solve the problems that the prior art directly configures the auxiliary cell in a switching command message, increases the size of the switching command message, causes the occupation of the air interface resource of a source cell to be increased, causes overlarge switching time delay and has low switching success rate under the condition of poor channel quality of the source cell.

In a first aspect, the present invention provides a method for configuring a secondary cell, which is applied to a target base station, and includes:

receiving a switching request message sent by a source base station, wherein the switching request message carries channel quality parameters of User Equipment (UE) in a source cell;

when the existence of the auxiliary cell to be added is determined, determining the corresponding maximum message length when the success rate of the source base station for sending the switching command message to the UE reaches a set threshold value according to the channel quality parameter;

determining whether the total message length after adding the auxiliary cell information in the switching command message is not more than the maximum message length according to the configuration information of the auxiliary cell;

and if so, indicating the source base station to send a switching command message carrying the auxiliary cell information to the UE by sending a switching request confirmation message carrying the auxiliary cell information.

Optionally, the method further comprises:

and if the total message length is greater than the maximum message length, indicating the source base station to send a switching command message which does not carry the auxiliary cell information to the UE by sending a switching request confirmation message which does not carry the auxiliary cell information.

Optionally, the method further comprises:

if the total message length is larger than the maximum message length, adding information of part of the auxiliary cells in the auxiliary cells to be added in the switching command message;

and instructing the source base station to send a switching command message carrying the information of the part of the auxiliary cells to the UE by sending a switching request confirmation message carrying the information of the part of the auxiliary cells.

Optionally, the channel quality parameter is a signal to interference plus noise ratio SINR determined by the UE according to the measurement reference signal.

Optionally, determining a maximum message length corresponding to a case that a success rate of the source base station sending the handover command message to the UE reaches a set threshold includes:

determining the MCS level of a modulation and coding strategy adopted when the success rate of the source base station for sending the switching command message to the UE reaches a set threshold value according to the channel quality parameter;

and determining the maximum message length according to the MCS level and other parameter information for limiting the length of the switching command message.

inquiring the maximum message length corresponding to the channel quality parameters according to different channel quality parameters and a mapping table of the corresponding maximum message length when the pre-established success rate of sending the switching command message to the UE by the source base station reaches a set threshold; or

And inquiring the channel quality parameters and the maximum message lengths corresponding to other parameter information for limiting the length of the switching command message according to a mapping table of the maximum message lengths corresponding to different channel quality parameters and different other parameter information for limiting the length of the switching command message when the pre-established success rate of sending the switching command message to the UE by the source base station reaches a set threshold value.

Optionally, the other parameter information for limiting the length of the handover command message includes the following information:

the switching command message comprises the number of MIMO layers, the number of Physical Resource Blocks (PRBs) and the number of symbols used by the switching command message in a downlink single time slot.

Optionally, determining, according to the configuration information of the secondary cell, a total message length after adding the secondary cell information in the handover command message, includes:

determining the initial message length before adding the secondary cell information in the switching command message;

determining the message length increased after the auxiliary cell information is added in the switching command message according to the configuration information of the auxiliary cell;

and determining the total message length after the secondary cell information is added in the switching command message according to the initial message length and the added message length.

Optionally, when any one of the following conditions is satisfied, determining that there is a secondary cell to be added:

the target cell for switching has adjacent cells covered by the same;

and determining that the target cell to be switched has an adjacent cell of which the signal intensity meets the addition condition of the auxiliary cell according to the air interface measurement result of the UE carried in the switching request message.

In a second aspect, the present invention provides a secondary cell configuration method, applied to a source base station, including:

receiving a measurement report containing channel quality parameters sent by a user terminal UE;

sending a switching request message to a target base station, wherein the switching request message carries the channel quality parameters of the UE in a source cell;

and receiving a switching request confirmation message carrying the auxiliary cell information sent by the target base station, and sending a switching command message carrying the auxiliary cell information to the UE.

Optionally, the method further comprises:

and receiving a switching request confirmation message which is sent by the target base station and does not carry the auxiliary cell information, and sending a switching command message which does not carry the auxiliary cell information to the UE.

In a third aspect, the present invention provides a target base station configured by a secondary cell, including a memory and a processor, wherein:

the memory is used for storing a computer program;

the processor is used for reading the program in the memory and executing the following steps:

Optionally, the processor is further configured to:

Optionally, the determining, by the processor, a maximum message length corresponding to a case that a success rate of sending the handover command message to the UE by the source base station reaches a set threshold includes:

Optionally, the determining, by the processor, a total message length after adding the secondary cell information in the handover command message according to the configuration information of the secondary cell includes:

Optionally, the processor determines that there is a secondary cell to be added when any one of the following conditions is satisfied:

the target cell for switching has adjacent cells covered by the same;

and determining that the target cell to be switched has an adjacent cell of which the signal strength meets the addition condition of the auxiliary cell according to the air interface measurement result of the UE carried in the switching request message.

In a fourth aspect, the present invention provides a source base station configured by a secondary cell, including a memory and a processor, wherein:

the memory is used for storing a computer program;

Optionally, the processor is further configured to:

In a fifth aspect, the present invention provides an apparatus for secondary cell configuration, including:

a request message receiving unit, configured to receive a handover request message sent by a source base station, where the handover request message carries a channel quality parameter of a user equipment UE in a source cell;

a message length determining unit, configured to determine, when it is determined that there is an auxiliary cell to be added, a maximum message length corresponding to a case that a success rate of sending a handover command message to the UE by the source base station reaches a set threshold according to the channel quality parameter;

a configuration condition judging unit, configured to determine, according to the configuration information of the secondary cell, whether a total message length after adding the secondary cell information in the handover command message is not greater than the maximum message length;

and the confirmation message sending unit is used for indicating the source base station to send the switching command message carrying the auxiliary cell information to the UE by sending the switching request confirmation message carrying the auxiliary cell information if the switching request confirmation message is received.

Optionally, the acknowledgment message sending unit is further configured to:

Optionally, the determining, by the message length determining unit, a maximum message length corresponding to a case that a success rate of sending the handover command message to the UE by the source base station reaches a set threshold includes:

the switching command message comprises the number of MIMO layers, the number of PRBs (physical resource blocks) and the number of symbols used by the switching command message in a downlink single time slot.

Optionally, the determining, by the configuration condition determining unit, a total message length obtained by adding the secondary cell information to the handover command message according to the configuration information of the secondary cell includes:

Optionally, when any one of the following conditions is satisfied, the message length determining unit determines that there is a secondary cell to be added:

the target cell for switching has adjacent cells covered by the same;

In a sixth aspect, the present invention provides an apparatus for secondary cell configuration, including:

a measurement report receiving unit, configured to receive a measurement report including a channel quality parameter, sent by a user equipment UE;

a request message sending unit, configured to send a handover request message to a target base station, where the handover request message carries a channel quality parameter of the UE in a source cell;

and the confirmation message receiving unit is used for receiving the switching request confirmation message which is sent by the target base station and carries the auxiliary cell information, and sending a switching command message which carries the auxiliary cell information to the UE.

Optionally, the acknowledgment message receiving unit is further configured to:

In a seventh aspect, the present invention provides a computer program medium, on which a computer program is stored, which when executed by a processor, implements the steps of a secondary cell configuration method as provided in the first aspect above.

In an eighth aspect, the present invention provides a chip, where the chip is coupled to a memory in a device, so that the chip invokes, when running, program instructions stored in the memory, to implement the above aspects and any one of the aspects related to the secondary cell configuration method according to the embodiments of the present application.

In a ninth aspect, the present invention provides a computer program product, which when run on an electronic device, causes the electronic device to execute a secondary cell configuration method that implements the above aspects of the embodiments of the present application and any one of the aspects related to the above aspects.

The method, the device and the equipment for configuring the auxiliary cell have the following beneficial effects that:

whether the auxiliary cells are added to the target cell and the number of the added auxiliary cells are determined through the channel quality information of the source cell, under the condition that the channel quality of the source cell is poor, the auxiliary cells are not configured or are less configured in the switching command message, the size of the switching command message is reduced, the success rate of receiving the switching command message by the user terminal UE is improved, the occupation of the air interface resources of the source cell is reduced, and the too long switching time delay is avoided.

Drawings

Fig. 1 is a signaling flowchart of configuring a secondary cell in the prior art according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a system for configuring a secondary cell according to an embodiment of the present invention;

fig. 3 is a signaling flowchart of secondary cell configuration according to an embodiment of the present invention;

fig. 4 is a flowchart of determining, by a handover destination cell, an auxiliary cell SCELL that can be added according to a channel quality parameter of a source cell according to an embodiment of the present invention;

fig. 5 is a flowchart of a method for configuring a secondary cell on a target base station side according to an embodiment of the present invention;

fig. 6 is a flowchart of a source base station side secondary cell configuration method according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a target base station configured by a secondary cell according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a source base station configured in a secondary cell according to an embodiment of the present invention;

fig. 9 is a schematic diagram of an apparatus for configuring a secondary cell on a target base station side according to an embodiment of the present invention;

fig. 10 is a schematic diagram of an apparatus for configuring a secondary cell on a source base station side according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the prior art, in order to enable the UE to continuously use the CA during the connected state to obtain high user perception, when a cell handover occurs during the user moving process, the cell is directly configured for the UE in the handover command message.

The conditions for directly configuring the SCELL for the UE in the handover command message include: the coverage relationship between the SCELL and the PCELL (Primary Cell), the signal strength of the SCELL, the service requirements of the user, and the like;

for a cell handover scenario, the SCELL may be added directly to the handover command message as follows:

1. if the target CELL CELL1 to be switched has an adjacent CELL CELL2 completely covered with the target CELL CELL, which can be CA with the CELL CELL1, the switching command message can be directly added with the CELL CELL2 as the SCELL of the UE;

2. the handover preparation request carried by the handover source CELL to the handover target CELL1 carries the air interface measurement result of the UE, and the CELL1 determines from the measurement result that the signal strength of the CELL2 meets the SCELL addition condition, so that the CELL2 can be directly added to the handover command message as the SCELL.

The basic flow of the prior art to directly configure the SCELL for the UE in the handover command message is given below:

as shown in fig. 1, an embodiment of the present invention provides a signaling flowchart for configuring a secondary cell in the prior art:

here, the switching flow with SCELL addition is described by XN switching in the SA mode of 5G independent networking, and the flows of NG switching, SA intra-station switching, and LTE intra-system switching are similar to the following flows.

1. The source base station sends down the radio resource control connection reconfiguration RrcReconfiguration containing the measurement configuration message to the user terminal UE;

2. after determining that the trigger condition of the measurement event in the measurement configuration is met, the User Equipment (UE) sends a measurement report MeasurementReport to the source base station;

3. the source base station sends a HANDOVER REQUEST message to the target base station;

4. after the preparation of the target base station switching is completed, a switching REQUEST confirmation message is sent to the source base station;

wherein, if the target base station judges that the adding SCELL condition is satisfied, SCELL adding is performed, and the configuration information of SCELL is included in the HANDOVER command message RrcReconfiguration in the HANDOVER REQUEST ACKNOWLEDGE message HANDOVER REQUEST ACKNOWLEDGE.

5. A source base station transmits a switching command message RrcReconfiguration containing scell configuration information to a User Equipment (UE);

6. the source base station sends a serial number state transmission message SN STATUS TRANSFER to the target base station;

7. the user terminal UE sends a serial number state transmission message RrcReconfigurationcomplete to the target base station;

8. the target base station sends a path switching REQUEST message PATH SWITCH REQUEST to the access and mobility management function AMF;

9. the AMF replies a path switch REQUEST ACKNOWLEDGE message PATH SWITCH REQUEST ACKNOWLEDGE message to the target base station;

10. the target base station sends a UE CONTEXT RELEASE message UE CONTEXT RELEASE to the source base station.

Currently, handover based on measurement generally only uses RSRP (Reference Signal Receiving Power) as a decision condition for deciding whether to switch, and does not allow a terminal to report a measurement quantity of channel quality such as SINR (Signal to Interference plus Noise Ratio), so that the rrc reconfiguration including measurement configuration in step 1 of the flow of fig. 1 generally does not indicate the terminal to report SINR, and the measurement report MeasurementReport in step 2 does not include channel quality information such as SINR of a source cell, and thus cannot further notify the channel quality information of the source cell to a target cell; in step 4 of the above-mentioned flow of fig. 1, the destination cell determines that the conditions are satisfied in preparation for handover and directly adds SCELL, and the channel quality of the source cell is not considered in these conditions.

However, in the prior art, the above technical solution of directly configuring the SCELL in the handover command message without considering the channel quality of the source cell increases the size of the handover command message. The UE is generally interfered by the neighboring cells with the same frequency in the handover area, the channel quality is poor, and a large air interface signaling message has many impacts:

In summary, the scheme for adding SCELL to the handover destination cell in the prior art has the following disadvantages:

a) the channel quality of the source cell is not considered when the SCELL is added in the switching target cell, if the channel quality of the UE in the source cell is poor, a larger switching command message can cause more empty resource occupation of the source cell;

b) the channel quality of the source cell is not considered when the SCELL is added to the switching target cell, if the channel quality of the UE in the source cell is poor, a larger switching command message may be fragmented, and further the switching time delay is increased;

c) when adding the SCELL, the switching target cell does not consider the channel quality of the source cell, if the channel quality of the UE in the source cell is poor, the larger switching command message may be fragmented, so that the probability that the terminal fails to receive the switching command message is increased, and the probability of the switching failure is increased.

In view of the above problems, embodiments of the present application provide a method, an apparatus, and a device for configuring an auxiliary cell, where an auxiliary cell that can be added is determined by channel quality information, so as to reduce the size of a handover command message, reduce the occupation of air interface resources, avoid too long handover delay, and improve the handover success rate. Embodiments of a method, an apparatus, and a device for configuring a secondary cell according to embodiments of the present invention are described below.

Example 1

As shown in fig. 2, an embodiment of the present invention provides a schematic diagram of a system for secondary cell configuration, where the system includes:

the method comprises the steps that a user terminal UE101 sends a measurement report MeasurementReport containing channel quality parameters to a source base station after meeting a trigger condition of a measurement event in measurement configuration; and sending a handover command completion message RrcReconfigurationComplete to the target base station.

A source base station 102, configured to send a rrc reconfiguration including a measurement configuration message to a user equipment UE, and instruct the user equipment UE to report a channel quality parameter; sending a HANDOVER REQUEST message to a target base station, wherein the HANDOVER REQUEST message carries channel quality parameters of the UE in a source cell; issuing a switching command message RrcReconfiguration to a user terminal UE; and sending a serial number STATUS TRANSFER message SN STATUS TRANSFER to the target base station.

The target base station 103 is configured to perform HANDOVER preparation, and send a HANDOVER REQUEST acknowledgement message HANDOVER acknowledgement to the source base station after the HANDOVER preparation is completed; sending a path switch REQUEST message PATH SWITCH REQUEST to the access and mobility management function AMF; sending a UE CONTEXT RELEASE message UE CONTEXT RELEASE to the source base station.

The access and mobility management function AMF104 is configured to reply to the target base station with a path switch REQUEST ACKNOWLEDGE message PATH SWITCH REQUEST ACKNOWLEDGE message.

As shown in fig. 3, an embodiment of the present invention provides a signaling flowchart for secondary cell configuration.

1. A source base station issues a radio resource control connection reconfiguration RrcReconfiguration containing a measurement configuration message, and indicates a terminal to report a channel quality parameter to a User Equipment (UE);

as an optional implementation manner, the channel quality parameter is a signal to interference plus noise ratio SINR determined by the UE according to the measurement reference signal.

It should be noted that the channel quality parameter may be any parameter reflecting the channel quality of the cell.

2. After meeting the trigger condition of the measurement event in the measurement configuration, the user terminal UE sends a measurement report MeasurementReport containing channel quality parameters to the source base station;

3. a source base station sends a HANDOVER REQUEST message to a target base station, wherein the HANDOVER REQUEST message carries channel quality parameters of UE in a source cell;

4. after the preparation for switching the target base station is finished, sending a switching REQUEST confirmation message to the source base station;

when judging whether to add the SCELL, on the basis of the judging condition of the prior art, whether to add the SCELL and the number of the SCELLs which can be added simultaneously are further judged according to the channel quality parameter of the source cell.

If it is finally determined to perform the SCELL addition, the configuration information of the SCELL is included in the HANDOVER command message RrcReconfiguration in the HANDOVER REQUEST ACKNOWLEDGE message HANDOVER REQUEST ACKNOWLEDGE.

As an optional implementation manner, if the total length of the message is greater than the maximum message length, the source base station is instructed to send a handover command message not carrying the secondary cell information to the UE by sending a handover request acknowledgement message not carrying the secondary cell information.

As an optional implementation manner, if the total length of the message is greater than the maximum message length, adding information of a part of the secondary cells to be added to the handover command message;

5. A source base station issues a handover command message RrcReconfiguration to a User Equipment (UE), wherein the handover command message RrcReconfiguration may or may not contain scell configuration information;

as an optional implementation manner, a handover request acknowledgement message that is sent by the target base station and does not carry the secondary cell information is received, and a handover command message that does not carry the secondary cell information is sent to the UE.

7. the user terminal UE sends a switching command completion message RrcReconfiguration complete to the target base station;

The embodiment of the present invention provides a flowchart for switching a destination cell to determine an adding secondary cell SCELL according to a channel quality parameter of a source cell, as shown in fig. 4:

step S401, receiving a HANDOVER REQUEST message HANDOVER REQUEST;

step S402, determining whether to add SCELL to the handover command according to the original conditions in the prior art, if yes, executing step S403, and if no, executing step S410;

as an alternative embodiment, when any one of the following conditions is satisfied, it is determined that the SCELL may be added to the handover command:

the target cell for switching has adjacent cells covered by the same;

Step S403, determining whether the HANDOVER REQUEST message HANDOVER REQUEST includes the channel quality parameter of the source cell, if yes, performing step S404, and if no, performing step S410;

step S404, according to the channel quality parameter, determining the maximum message length corresponding to the time when the success rate of the source base station sending the switching command message to the UE reaches the set threshold;

it should be noted that the length of the handover command message may be represented by a bit number.

It should be noted that, the maximum message length corresponding to the determination that the success rate of the source base station sending the handover command message to the UE reaches the set threshold may be calculated in real time, or the maximum message length corresponding to the channel quality parameter may be queried through a mapping table of different channel quality parameters and corresponding maximum message lengths when the pre-established success rate of the source base station sending the handover command message to the UE reaches the set threshold.

As an optional implementation manner, determining a maximum message length corresponding to a case that a success rate of sending a handover command message to a UE by a source base station reaches a set threshold includes:

It should be noted that the other parameter information for limiting the length of the handover command message includes the following information:

Step S405, determining the initial message length before adding the auxiliary cell information in the switching command message;

it should be noted that, the number of message bits before the handover command message does not add the secondary cell information is calculated.

It should be noted that the sizes of the initial message lengths of the cells with different configuration parameters are different, and the initial message length is obtained by assembling the message at the handover destination side every time of handover.

Step S406, determining whether a secondary cell to be added exists, if so, executing step S407, otherwise, executing step S410;

step S407, determining the total message length after adding the auxiliary cell information in the handover command message according to the configuration information of the auxiliary cell;

determining that the SCELL to be added exists, and calculating the number of air interface messages bit added after the SCELL is added according to the configuration of the SCELL.

As an optional implementation manner, determining, according to the configuration information of the secondary cell, a total message length after adding the secondary cell information in the handover command message includes:

Step S408, determining whether the total message length is not greater than the maximum message length, if so, executing step S409, and if not, executing step S410;

step S409, determining that the secondary cell can be added in the handover command message, and adding the configuration information of the secondary cell in the handover command message.

It should be noted that, the number of bits occupied by the configuration information of the secondary cell is added to the number of bits of the handover command message.

Step S410, determining not to add the configuration information of the secondary cell in the handover command message.

As an optional implementation manner, when the pre-established success rate of the source base station sending the handover command message to the UE reaches the set threshold, the mapping table of the maximum message length corresponding to different channel quality parameters includes:

mapping a prior information table used by the maximum BIT number of a switching command message when a certain switching success rate is met according to the SINR of the UE in a source cell, wherein the specific method comprises the following steps:

mapping MCS levels according to the SINR;

and obtaining a prior information table through theoretical analysis calculation, simulation test, current network actual measurement and other ways according to information such as MCS level, MIMO layer number limited and used by the switching command, PRB number limited and used by the switching command, symbol number limited and used by the downlink single SLOT.

As an alternative implementation, the prior information table is obtained by a theoretical analysis and calculation method.

Suppose that: (1) the switching command message fixedly uses the MIMO layer number of 1, namely single stream transmission; (2) the maximum number of PRBs used by the switching command message is 50; (3) the number of symbols used by the switching command message in a single slot is 12;

based on the above assumed conditions:

(1) when the SINR is 120, the UE is considered good, and the use of a higher MCS level (26) also allows the UE to successfully receive the handover command message with a high probability (99%).

According to the MCS (26), the MIMO layer number (single stream) used by the switching command, the maximum PRB number (50) used by the switching command and the symbol number (12) used by the single slot of the switching command, the maximum length of the switching command message can be calculated to be 30000bit, and at the moment, when the set SINR is 120, the maximum transmission length of the switching command is 30000 bit;

(2) when the SINR is 30, the UE is considered to be in a bad point, and a lower MCS level (4) is needed to make the UE have a high probability (99%) of successfully receiving the handover command message.

According to the MCS (4), the MIMO layer number (single stream) used by the switching command, the maximum PRB number (50) used by the switching command and the symbol number (12) used by the single slot of the switching command, the maximum length of the switching command message can be calculated to be 4000bit, and at the moment, when the SINR is set to be 30, the maximum transmission length of the switching command is 4000 bit;

the resulting mapping is shown in table 1 below:

TABLE 1 SNIR vs. Handover Command maximum BIT mapping Table given Handover success Rate

SINR protocol valuing	Maximum BIT number of handover command message
		0	Abit
1	Bbit
		2	Cbit
……	……
		126	Ybit
127	Zbit

Example 2

An embodiment of the present invention provides a flowchart of a method for configuring a secondary cell on a target base station side, where as shown in fig. 5, the method includes:

step S501, receiving a switching request message sent by a source base station, wherein the switching request message carries channel quality parameters of User Equipment (UE) in a source cell;

step S502, when determining that the auxiliary cell to be added exists, determining the corresponding maximum message length when the success rate of the source base station sending the switching command message to the UE reaches the set threshold value according to the channel quality parameter;

step S503, according to the configuration information of the auxiliary cell, determining whether the total message length after the auxiliary cell information is added in the switching command message is not greater than the maximum message length;

step S504, if yes, the source base station is instructed to send a switching command message carrying the auxiliary cell information to the UE by sending a switching request confirmation message carrying the auxiliary cell information.

Optionally, the method further comprises:

the target cell for switching has adjacent cells covered by the same;

The embodiment of the present invention provides a flowchart of a source base station side secondary cell configuration method, as shown in fig. 6, including:

step S601, receiving a measurement report containing channel quality parameters sent by a user terminal UE;

step S602, sending a switching request message to a target base station, wherein the switching request message carries the channel quality parameter of the UE in a source cell;

step S603, receiving a handover request acknowledgement message carrying the secondary cell information sent by the target base station, and sending a handover command message carrying the secondary cell information to the UE.

Optionally, the method further comprises:

The method for configuring the secondary cell of the target base station provided in the embodiment of the present invention is the same as the target base station in embodiment 1 of the present invention, and is applied to various implementation manners of performing secondary cell configuration by the target base station in the system provided in the embodiment, and may be applied to a target base station configured by a secondary cell in the embodiment, and a description thereof is omitted here.

The method for configuring a source base station and an auxiliary cell provided in the embodiment of the present invention belongs to the same inventive concept as the source base station in embodiment 1 of the present invention, and is applied to various implementation manners for configuring an auxiliary cell by a source base station in a system provided in the embodiment, and may be applied to a source base station configured by an auxiliary cell in the embodiment, and a description thereof is omitted here.

An embodiment of the present invention provides a schematic diagram of a target base station configured in a secondary cell, as shown in fig. 7, including:

memory 701, processor 702, transceiver 703, and bus interface 704.

The processor 702 is responsible for managing the bus architecture and general processing, and the memory 701 may store data used by the processor 702 in performing operations. The transceiver 703 is used for receiving and transmitting data under the control of the processor 702.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 702, and various circuits of memory, represented by memory 701, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 702 is responsible for managing the bus architecture and general processing, and the memory 701 may store data used by the processor 702 in performing operations.

The processes disclosed in the embodiments of the invention can be implemented in the processor 702 or implemented by the processor 702. In implementation, the steps of the signal processing flow may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 702. The processor 702 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The storage medium is located in the memory 701, and the processor 702 reads the information in the memory 701, and completes the steps of the signal processing flow in combination with the hardware thereof.

Specifically, the processor 702 is configured to read the program in the memory 701 and execute:

Optionally, the processor is further configured to:

the target cell for switching has adjacent cells covered by the same;

The schematic diagram of a source base station configured by a secondary cell provided in an embodiment of the present invention, as shown in fig. 8, includes:

a memory 801, a processor 802, a transceiver 803, and a bus interface 804.

The processor 802 is responsible for managing the bus architecture and general processing, and the memory 801 may store data used by the processor 802 in performing operations. The transceiver 803 is used for receiving and transmitting data under the control of the processor 802.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 802 and various circuits of memory represented by memory 801 being linked together in particular. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 802 is responsible for managing the bus architecture and general processing, and the memory 801 may store data used by the processor 802 in performing operations.

The process disclosed in the embodiments of the present invention can be applied to the processor 802, or implemented by the processor 802. In implementation, the steps of the signal processing flow may be accomplished by instructions in the form of hardware, integrated logic circuits, or software in the processor 802. The processor 802 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 801, and the processor 802 reads the information in the memory 801 and completes the steps of the signal processing flow in combination with the hardware thereof.

Specifically, the processor 802 is configured to read the program in the memory 801 and execute:

Optionally, the processor is further configured to:

The target base station configured for the secondary cell provided in the embodiment of the present invention is the same inventive concept as the target base station of embodiment 1 of the present invention, and various embodiments of performing secondary cell configuration on the target base station in the system provided in the embodiment may be applied to a target base station configured for a secondary cell in the embodiment, and are not repeated here.

The source base station configured for the secondary cell provided in the embodiment of the present invention is the same inventive concept as the source base station of embodiment 1 of the present invention, and is applied to various implementation manners of performing a secondary cell configuration by the source base station in the system provided in the embodiment, and may be applied to a source base station configured for a secondary cell in the embodiment, and a description thereof is omitted here.

An embodiment of the present invention provides a schematic diagram of a device for configuring a secondary cell on a target base station side, as shown in fig. 9, including:

a request message receiving unit 901, configured to receive a handover request message sent by a source base station, where the handover request message carries a channel quality parameter of a user equipment UE in a source cell;

a message length determining unit 902, configured to determine, when it is determined that there is an auxiliary cell to be added, a maximum message length corresponding to a case that a success rate of sending a handover command message to the UE by the source base station reaches a set threshold according to the channel quality parameter;

a configuration condition determining unit 903, configured to determine, according to the configuration information of the secondary cell, whether a total message length obtained after adding the secondary cell information in the handover command message is not greater than the maximum message length;

a confirmation message sending unit 904, configured to instruct the source base station to send a handover command message carrying the secondary cell information to the UE by sending a handover request confirmation message carrying the secondary cell information if the UE is in the serving cell.

Optionally, the acknowledgment message sending unit is further configured to:

the target cell for switching has adjacent cells covered by the same;

An embodiment of the present invention provides a schematic diagram of a device for configuring a source base station side secondary cell, as shown in fig. 10, including:

a measurement report receiving unit 1001 configured to receive a measurement report including a channel quality parameter sent by a user equipment UE;

a request message sending unit 1002, configured to send a handover request message to a target base station, where the handover request message carries a channel quality parameter of the UE in a source cell;

a confirmation message receiving unit 1003, configured to receive a handover request confirmation message carrying the secondary cell information sent by the target base station, and send a handover command message carrying the secondary cell information to the UE.

Optionally, the acknowledgment message receiving unit is further configured to:

The apparatus for configuring a secondary cell of a target base station provided in the embodiment of the present invention is the same as the target base station in embodiment 1 of the present invention, and is applied to various implementation manners of performing a secondary cell configuration by the target base station in the system provided in the embodiment, and may be applied to a target base station configured by a secondary cell in this embodiment, and details thereof are not repeated here.

The apparatus for configuring a source base station and an auxiliary cell provided in the embodiment of the present invention belongs to the same inventive concept as the source base station in embodiment 1 of the present invention, and is applied to various implementation manners of performing an auxiliary cell configuration by a source base station in a system provided in the embodiment, and may be applied to a source base station configured by an auxiliary cell in this embodiment, and a description thereof is omitted here.

The present invention also provides a computer program medium having a computer program stored thereon, which when executed by a processor, implements the steps of one of the secondary cell configuration methods applied to a target base station provided in the above-described embodiment 2.

The present invention also provides a computer program medium having a computer program stored thereon, which when executed by a processor, implements the steps of one of the secondary cell configuration methods applied to a source base station provided in the above-described embodiment 2.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may be stored in a computer readable storage medium.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.

The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The technical solutions provided by the present application are introduced in detail, and the present application applies specific examples to explain the principles and embodiments of the present application, and the descriptions of the above examples are only used to help understand the method and the core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for configuring a secondary cell, applied to a target base station, includes:

2. The method of claim 1, further comprising:

3. The method of claim 1, further comprising:

if the total message length is larger than the maximum message length, adding information of a part of auxiliary cells in the auxiliary cells to be added in the switching command message;

4. The method of claim 1, wherein the channel quality parameter is a signal to interference plus noise ratio (SINR) determined by the UE according to the measurement reference signal.

5. The method of claim 1, wherein determining the maximum message length corresponding to the success rate of the source base station sending the handover command message to the UE reaching the set threshold comprises:

6. The method according to any one of claims 1 to 5, wherein determining the maximum message length corresponding to the success rate of the source base station sending the handover command message to the UE reaching the set threshold comprises:

7. The method according to claim 3 or 5, wherein the other parameter information for limiting the length of the handover command message comprises the following information:

8. The method of claim 1, wherein determining the total message length after adding the secondary cell information in the handover command message according to the configuration information of the secondary cell comprises:

9. The method of claim 1, wherein the secondary cell to be added is determined to exist when any one of the following conditions is satisfied:

the target cell for switching has adjacent cells covered by the same;

10. A method for configuring a secondary cell, applied to a source base station, includes:

11. The method of claim 10, further comprising:

12. The method of claim 10, wherein the channel quality parameter is a signal to interference plus noise ratio (SINR) determined by the UE according to the measurement reference signal.

13. A target base station for secondary cell configuration, comprising a memory and a processor, wherein:

the memory is used for storing a computer program;

the processor is used for reading the program in the memory and executing:

14. The target base station of claim 13, wherein the processor is further configured to:

15. The target base station of claim 13, wherein the processor is further configured to:

16. The target base station of claim 13, wherein the channel quality parameter is a signal to interference plus noise ratio (SINR) determined by the UE according to the measurement reference signal.

17. The target base station of claim 13, wherein the processor determines a maximum message length corresponding to a success rate of the source base station sending the handover command message to the UE reaching a set threshold, including:

18. The target base station according to any of claims 13 to 17, wherein the processor determines a maximum message length corresponding to a success rate of the source base station sending the handover command message to the UE reaching a set threshold, including:

19. The target base station according to claim 15 or 17, wherein the other parameter information for limiting the length of the handover command message comprises the following information:

20. The target base station of claim 13, wherein the processor determines, according to the configuration information of the secondary cell, a total message length after adding the secondary cell information in the handover command message, including:

21. The target base station of claim 13, wherein the processor determines that there is a secondary cell to be added when any of the following conditions is met:

the target cell for switching has adjacent cells covered by the same;

22. A source base station for secondary cell configuration, comprising a memory and a processor, wherein:

the memory is used for storing a computer program;

the processor is used for reading the program in the memory and executing:

23. The source base station of claim 22, wherein the processor is further configured to:

24. The source base station of claim 22, wherein the channel quality parameter is a signal to interference plus noise ratio (SINR) determined by the UE from the measurement reference signal.

25. An apparatus for secondary cell configuration, comprising:

and the confirmation message sending unit is used for indicating the source base station to send a switching command message carrying the auxiliary cell information to the UE by sending a switching request confirmation message carrying the auxiliary cell information if the switching request confirmation message is received.

26. An apparatus for secondary cell configuration, comprising:

27. A computer program medium having stored thereon a computer program which, when executed by a processor, performs the steps of a secondary cell configuration method as claimed in any one of claims 1 to 9 or claims 10 to 12.