CN114501557B

CN114501557B - Auxiliary cell configuration method, device and equipment

Info

Publication number: CN114501557B
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: 2024-03-08
Anticipated expiration: 2040-11-11
Also published as: CN114501557A

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 existence of the auxiliary cell to be added is determined, determining the 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 length of the message after adding the auxiliary cell information in the handover command message is not more than the maximum message length according to the configuration information of the auxiliary cell; if yes, the source base station is instructed to send a switching command message carrying auxiliary cell information to the UE by sending a switching request confirmation message carrying 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 success rate of receiving the switching command message by the UE is improved, and the occupation of air interface resources and switching time delay are reduced.

Description

Auxiliary cell configuration method, device and equipment

Technical Field

The present invention relates to the field of wireless communications 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 enhance the perception of users, so that UEs (User Equipment) acquire as high as possible upload and download rates, CA (carrier aggregation, carrier aggregation technology) is introduced from LTE (Long Term Evolution ), and 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 a UE to continuously use CA during a connected state to obtain high user perception, when a cell handover occurs during a user movement, SCELL is directly configured for the UE in a handover command message, and the size of the handover command message is increased. The UE is generally interfered by the same-frequency neighbor cell in the handover band, the channel quality is poor, and the larger air interface signaling message brings a plurality of effects:

(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 air interface signaling message size occupies more PRBs (physical resource block, 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 places a great load on the air interface resources. Every time one SCELL is carried in the handover command, the size of the handover command is increased by about 60%, and the load of the air interface resource is further increased.

(2) If the current remaining PRB resource of one SLOT cannot carry one handover command message, the base station may divide the handover command message into a plurality of slices, and transmit on the plurality of SLOTs on the air interface, thereby causing an increase in the air interface delay.

(3) The more tiles, the greater the probability of message transmission failure under 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 configures the auxiliary cell directly in a switching command message, increases the size of the switching command message, increases the occupation of air interface resources of a source cell under the condition of poor channel quality of the source cell, and has overlarge switching time delay and low switching success rate.

In a first aspect, the present invention provides a secondary cell configuration method, applied to a target base station, where the method 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 maximum message length corresponding to the success rate of the source base station for sending the switching command message to the UE reaching a set threshold value according to the channel quality parameter;

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

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:

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 which does not carry auxiliary cell information to the UE by sending a handover request acknowledgement message which does not carry auxiliary cell information.

Optionally, the method further comprises:

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

and the source base station is instructed to send a switching command message carrying the information of the partial auxiliary cells to the UE by sending a switching request confirmation message carrying the information of the partial 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 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 includes:

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

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

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

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

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

The MIMO layer number, the number of physical resource blocks PRB and the number of symbols used in the downlink single time slot of the switching command message.

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

determining an initial message length before adding auxiliary cell information in a handover command message;

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

and determining the total length of the message after adding the auxiliary cell information in the handover command message according to the initial length of the message and the added message length.

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

the target cell of the handover has neighboring cells covered by the same cell;

and determining that the adjacent cell with the signal strength meeting the auxiliary cell adding condition exists in the target cell for switching 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, where the method includes:

Receiving a measurement report containing channel quality parameters sent by User Equipment (UE);

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

and receiving a switching request confirmation message carrying 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 auxiliary cell information, and sending a switching command message which is sent by the target base station and does not carry 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 processor determines a maximum message length corresponding to when the success rate of the source base station sending the handover command message to the UE reaches a set threshold, including:

Optionally, the processor determines the total length of the message after adding the secondary cell information in the handover command message according to the configuration information of the secondary cell, including:

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

the target cell of the handover has neighboring cells covered by the same cell;

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 an auxiliary cell to be added exists, a maximum message length corresponding to a success rate of the source base station sending a handover command message to the UE reaching 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 the 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 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 acknowledgement message sending unit is further configured to:

Optionally, the message length determining unit 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:

Optionally, the configuration condition determining unit 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:

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

the target cell of the handover has neighboring cells covered by the same cell;

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 channel quality parameters 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 a switching request confirmation message carrying 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 acknowledgement message receiving unit is further configured to:

In a seventh aspect, the present invention provides a computer program medium having a computer program stored thereon, 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 a secondary cell configuration method according to each of the foregoing aspects and any possible related aspects of the embodiments of the present application.

In a ninth aspect, the present invention provides a computer program product for, when run on an electronic device, causing the electronic device to perform a secondary cell configuration method implementing the above aspects of the embodiments of the present application and any one of the possible concerns related to the aspects.

The auxiliary cell configuration method, the device and the equipment provided by the invention have the following beneficial effects:

and determining whether the destination cell adds auxiliary cells and the number of the added auxiliary cells through the channel quality information of the source cell, and under the condition that the channel quality of the source cell is bad, not configuring the auxiliary cells or configuring less auxiliary cells in the switching command message, so that 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 air interface resources of the source cell is reduced, and overlarge switching time delay is avoided.

Drawings

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

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

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

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

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

fig. 6 is a flowchart of a method for configuring a secondary cell at a source base station 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 by 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 at a target base station according to an embodiment of the present invention;

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

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

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

The conditions for configuring SCELL directly for UE in handover command message include: coverage relation of SCELL and PCELL (Primary Cell), signal strength of SCELL, service requirement of user, etc.;

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

1. the adjacent CELL CELL2 with complete coverage in the target CELL CELL1 to be switched can be CA with the CELL1, and then CELL2 can be directly added into the switching command message as SCELL of UE;

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

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

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

here, the description of the switching procedure with SCELL addition is performed by XN switching in 5G independent networking SA mode, and the procedures of NG switching, switching in SA station, switching in LTE system are similar to those described below.

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

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

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

4. after the target base station handover preparation is completed, a handover request acknowledgement message HANDOVER REQUEST ACKNOWLEDGE is sent to the source base station;

If the target base station determines that the SCELL addition condition is satisfied, SCELL addition is performed, and configuration information of SCELL is included in the handover command message rrcurfiguration in the handover request confirm message HANDOVER REQUEST ACKNOWLEDGE.

5. The source base station transmits a switching command message RrcReconfiguration containing scell configuration information to a user terminal (UE);

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

7. the user terminal UE sends a sequence 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 an access and mobility management function AMF;

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

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

The current handover based on measurement generally only uses RSRP (Reference Signal Receiving Power, reference signal received power) as a decision condition for whether to switch, and does not allow the terminal to report the measurement quantity of channel quality such as SINR (Signal to Interference plus Noise Ratio ), so the radio resource control connection reconfiguration including measurement configuration in step 1 of the procedure of fig. 1 generally does not instruct the terminal to report SINR, and the measurement report MeasurementReport in step 2 does not include channel quality information such as SINR of the source cell, and cannot further notify the channel quality information of the source cell to the target cell; in step 4 of the flow of fig. 1, the destination cell determines that the conditions are met at the time of handover preparation to directly add SCELL, and the channel quality of the source cell is not considered in these conditions.

In the prior art, the technical scheme of directly configuring 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 same-frequency neighbor cell in the handover band, the channel quality is poor, and the larger air interface signaling message brings a plurality of effects:

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

a) When the target cell is switched to add SCELL, the channel quality of the source cell is not considered, if the channel quality of the UE in the source cell is poor, larger switching command message can cause the occupation of more air interface resources of the source cell;

b) When the SCELL is added in the switching target cell, the channel quality of the source cell is not considered, if the channel quality of the UE in the source cell is poor, the larger switching command message can be fragmented, and the switching delay is increased;

c) When the target cell is switched to add SCELL, the channel quality of the source cell is not considered, 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 of failure of the terminal to receive the switching command message is increased, and the probability of switching failure is increased.

Aiming at the problems, the embodiment of the application provides a method, a device and equipment for configuring an auxiliary cell, which are used for determining the auxiliary cell capable of being added through channel quality information, so that the size of a switching command message is reduced, the occupation of air interface resources is reduced, overlarge switching time delay is avoided, and the switching success rate is improved. The following provides an implementation manner of a secondary cell configuration method, a secondary cell configuration device and a secondary cell configuration device.

Example 1

As shown in fig. 2, an embodiment of the present invention provides a schematic diagram of a system configured by a secondary cell, including:

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

A source base station 102, configured to send a radio resource control connection reconfiguration rrcurfig including a measurement configuration message to a user terminal UE, and instruct the user terminal UE to report a channel quality parameter; transmitting 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 handover command message RrcReconfiguration to a user terminal (UE); a sequence number status transfer message SN STATUS TRANSFER is sent to the target base station.

A target base station 103, configured to perform handover preparation, and send a handover request acknowledgement message HANDOVER REQUEST ACKNOWLEDGE 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; the UE context release message UE CONTEXT RELEASE is sent 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 acknowledgement message PATH SWITCH REQUEST ACKNOWLEDGE.

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

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

as an alternative 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.

The channel quality parameter may be any parameter reflecting the channel quality of the cell.

2. After the user terminal UE meets the triggering condition of the measurement event in the measurement configuration, a measurement report MeasurementReport containing channel quality parameters is sent to the source base station;

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

when judging whether to add the SCELL, on the basis of the judging conditions in the prior art, judging whether to add the SCELL and the number of the SCELLs which can be added simultaneously according to the channel quality parameters of the source cell.

If the SCELL addition is finally determined, configuration information of SCELL is included in the handover command message rrcureconfiguration in the handover request confirm 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 that does not carry secondary cell information to the UE by sending a handover request acknowledgement message that does not carry secondary cell information.

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

5. The source base station issues a handover command message rrcureconfiguration to the UE, where the UE may or may not include scell configuration information;

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

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

The embodiment of the invention provides a flow chart for determining an auxiliary cell SCELL which can be added by a handover destination cell according to channel quality parameters of a source cell, as shown in fig. 4:

step S401, receiving a HANDOVER REQUEST message;

step S402, judging whether SCELL can be added in the switching command according to the original condition in the prior art, if so, executing step S403, otherwise, executing step S410;

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

the target cell of the handover has neighboring cells covered by the same cell;

Step S403, determining whether the HANDOVER REQUEST message includes the channel quality parameter of the source cell, if so, executing step S404, otherwise, executing step S410;

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

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

It should be noted that, when the success rate of sending the handover command message from the source base station to the UE reaches the set threshold, the corresponding maximum message length may be calculated in real time, or when the success rate of sending the handover command message from the source base station to the UE reaches the set threshold, the mapping table of the corresponding maximum message length may be used to query the maximum message length corresponding to the channel quality parameter.

As an optional implementation manner, 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 includes:

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

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

the number of bits of the message before the auxiliary cell information is not added to the handover command message is calculated.

The message initial lengths of the cells with different configuration parameters are different, and each time the cell is switched, the message initial length is obtained by assembling a message at the switching destination side.

Step S406, determining whether there is a secondary cell to be added, if yes, executing step S407, otherwise, executing step S410;

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

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

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

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

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

The number of bits occupied by the configuration information of the secondary cell is increased from the number of bits of the handover command message.

Step S410, determining that the configuration information of the secondary cell is not added in the handover command message.

As an optional implementation manner, when a success rate of sending a handover command message to a UE by a pre-established source base station reaches a set threshold, mapping tables of different channel quality parameters and corresponding maximum message lengths include:

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

mapping MCS levels according to SINR;

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

As an alternative embodiment, the prior information table is obtained by means of theoretical analysis and calculation.

Assume that: (1) The switching command message is fixedly transmitted by using the MIMO layer number of 1, namely single stream; (2) the maximum PRB number used by the switching command message is 50; (3) The number of symbols used in a single slot of the switching command message is 12;

based on the above assumption:

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

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

(2) When the SINR is 30, the UE is considered to be at the difference point, and a lower MCS level (4) needs to be used to make the UE have a high probability (99%) of successfully receiving the handover command message.

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

The resulting mapping is shown in table 1 below:

table 1 mapping table of maximum BIT number of SNIR and handover command given handover success rate

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

Example 2

The embodiment of the invention provides a flow chart of a target base station side auxiliary cell configuration method, as shown in fig. 5, comprising the following steps:

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

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

step S503, according to the configuration information of the auxiliary cell, determining whether the total message length after adding the auxiliary cell information in the handover 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 of the handover has neighboring cells covered by the same cell;

The embodiment of the invention provides a flow chart of a source base station side auxiliary cell configuration method, as shown in fig. 6, comprising the following steps:

step S601, receiving a measurement report containing channel quality parameters sent by a User Equipment (UE);

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

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

Optionally, the method further comprises:

The method for configuring the secondary cell of the target base station provided by the embodiment of the present invention belongs to the same inventive concept as the target base station of the above embodiment 1, and various implementations of performing a secondary cell configuration by the target base station in the system provided by the above embodiment can be applied to a target base station configured by a secondary cell in the present embodiment, which will not be repeated here.

The method for configuring the secondary cell of the source base station provided by the embodiment of the present invention belongs to the same inventive concept as the source base station of the above embodiment 1 of the present invention, and various implementations of configuring the secondary cell by the source base station in the system provided by the above embodiment can be applied to the source base station configured by the secondary cell in the present embodiment, which will not be repeated here.

An embodiment of the present invention provides a schematic diagram of a target base station configured by 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 to receive and transmit data under the control of the processor 702.

The bus architecture may include any number of interconnecting buses and bridges, and in particular one or more processors represented by the processor 702 and various circuits of the memory, represented by the memory 701, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described 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 flow disclosed in the embodiments of the present invention may be applied to the processor 702, or may be implemented by the processor 702. In implementation, the steps of the signal processing flow may be performed by integrated logic circuitry in hardware or instructions in 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 device, discrete hardware components, and may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the invention. The 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 embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as 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 its hardware.

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

Optionally, the processor is further configured to:

the target cell of the handover has neighboring cells covered by the same cell;

The schematic diagram of a source base station configured by a secondary cell provided by the embodiment of the 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 configured to receive and transmit data under the control of the processor 802.

The bus architecture may include any number of interconnecting buses and bridges, and in particular one or more processors represented by the processor 802 and various circuits of the memory, represented by the memory 801. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described 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 flow disclosed in the embodiments of the present invention may be applied to the processor 802, or implemented by the processor 802. In implementation, the steps of the signal processing flow may be performed by integrated logic circuitry in hardware or instructions in 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 device, discrete hardware components, and may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the invention. The 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 embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as 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 its hardware.

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

Optionally, the processor is further configured to:

The target base station configured by the secondary cell provided by the embodiment of the present invention belongs to the same inventive concept as the target base station of the above embodiment 1 of the present invention, and various implementations of performing a secondary cell configuration by the target base station in the system provided by the above embodiment can be applied to the target base station configured by a secondary cell in the present embodiment, which will not be repeated here.

The source base station configured by the secondary cell provided by the embodiment of the present invention belongs to the same inventive concept as the source base station of the above embodiment 1 of the present invention, and various implementations of performing a secondary cell configuration by the source base station in the system provided by the above embodiment can be applied to the source base station configured by a secondary cell in the present embodiment, which will not be repeated here.

An embodiment of the present invention provides a schematic diagram of a device for configuring a secondary cell at a target base station, 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 a secondary cell to be added exists, a maximum message length corresponding to a success rate of the source base station sending a handover command message to the UE reaching a set threshold according to the channel quality parameter;

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

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

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

the target cell of the handover has neighboring cells covered by the same cell;

An embodiment of the present invention provides a schematic diagram of a device for configuring a secondary cell at a source base station, 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;

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

The device for configuring the secondary cell of the target base station provided by the embodiment of the present invention belongs to the same inventive concept as the target base station of the above embodiment 1 of the present invention, and various implementations of configuring the secondary cell by the target base station in the system provided by the above embodiment can be applied to the target base station configured by the secondary cell in the present embodiment, which will not be repeated here.

The device for configuring the secondary cell of the source base station provided by the embodiment of the present invention belongs to the same inventive concept as the source base station of the above embodiment 1 of the present invention, and various implementations of configuring the secondary cell by the source base station in the system provided by the above embodiment can be applied to the source base station configured by the secondary cell in the present embodiment, which will not be repeated here.

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

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

In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.

The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed over 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 this embodiment.

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

In the above embodiments, it may be implemented in whole or in part 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, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The foregoing has described in detail the technical solutions provided herein, and specific examples have been used to illustrate the principles and embodiments of the present application, where the above examples are only used to help understand the methods and core ideas of the present application; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

It will be appreciated by those skilled in the art that 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. The secondary cell configuration method is characterized by being applied to a target base station and comprising the following steps:

2. The method as recited in claim 1, further comprising:

3. The method as recited in claim 1, further comprising:

If the total message length is greater than the maximum message length, adding the information of part of 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 from a measurement reference signal.

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

6. The method according to any one of claims 1 to 5, wherein determining 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 value includes:

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

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

9. The method according to claim 1, characterized in that it is determined that there is a secondary cell to be added when any of the following conditions is fulfilled:

the target cell of the handover has neighboring cells covered by the same cell;

10. A secondary cell configuration method, applied to a source base station, comprising:

when the target base station determines that the auxiliary cell to be added exists, determining the maximum message length corresponding to the success rate of the source base station sending the switching command message to the UE reaching a set threshold according to the channel quality parameter; and determining the total length of the message added with the auxiliary cell information in the handover command message according to the configuration information of the auxiliary cell, and sending a handover request confirmation message carrying the auxiliary cell information to the UE after the total length of the message is not more than the maximum message length.

11. The method as recited in 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 from a 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 configured to read the program in the memory and execute:

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 from the measurement reference signal.

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

18. The target base station according to any one of claims 13 to 17, wherein the processor determining 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 value includes:

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

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

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

the target cell of the handover has neighboring cells covered by the same cell;

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 configured to read the program in the memory and execute:

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:

26. An apparatus for secondary cell configuration, comprising:

a confirmation message receiving unit, configured to receive the maximum message length corresponding to when the success rate of the device for sending the handover command message to the UE reaches a set threshold according to the channel quality parameter when the target base station determines that the secondary cell to be added exists; and determining the total length of the message added with the auxiliary cell information in the handover command message according to the configuration information of the auxiliary cell, and sending a handover request confirmation message carrying the auxiliary cell information to the UE after the total length of the message is not more than the maximum message length.

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 of claims 1 to 9 or claims 10 to 12.