CN105407511B - A kind of method and device of user equipment access carrier converging network - Google Patents

Abstract

The embodiment of the present invention provides a kind of method and device of user equipment access carrier converging network, is related to the communications field, can effectively utilize Internet resources to improve transmission rate.Including：Receive the first message that user equipment is sent, first message includes the ability of user equipment, the ability of user equipment is used to indicate user equipment and supports Frequency Division Duplex FDD frequency range and Time Division Duplex TDD frequency range, and for user equipment registration in first community, first community is the cell of TDD frequency range；Judge that the load value of second community is less than or equal to threshold value, second community is the cell of FDD frequency range, and for the coverage area of first community in the coverage area of second community, the priority of first community is higher than the priority of second community；Switching instruction is sent to user equipment, switching instruction is used to indicate user equipment and is switched to second community；Configuration message is sent to user equipment, configuration message is used to indicate user device configuration first community.For access carrier converging network.

Description

Method and device for user equipment to access carrier aggregation network

technical field

The present invention relates to the communication field, in particular to a method and device for user equipment to access a carrier aggregation network.

Background technique

With the continuous improvement of user data requirements, operators need to continuously improve network capacity and expand coverage to meet user needs through communication technologies. At present, operators are deploying frequency division duplex (English full name: Frequency Division Duplexing, English abbreviation: FDD) network and time division duplex (English full name Time Division Duplexing, English abbreviation: TDD) network, usually using carrier aggregation (English full name: Carrier Aggregation (English abbreviation: CA) technology integrates FDD network and TDD network to provide users with more abundant spectrum resources to improve network capacity and expand coverage to meet user needs. Since the FDD frequency band is much lower than the TDD frequency band, the coverage of the cell in the FDD network is usually taken as the coverage of the primary cell, and the coverage of the cell in the TDD network is taken as the coverage of the secondary cell. For example, as shown in Figure 1, the carrier aggregation network includes an evolved base station (English full name: evolved Node B, English abbreviation: eNB), including a micro base station within the coverage of the evolved base station, and the evolved base station uses the FDD frequency band for transmission Data, the micro base station uses the TDD frequency band to transmit data, the cell of the evolved base station is used as the primary cell, the cell of the micro base station is used as the secondary cell, and the secondary cell and the primary cell form a carrier aggregation cell pair. User equipment (English full name: User Experience, English abbreviation: UE) accesses the network through the primary cell, and only establishes a radio resource control (English full name: Radio Resource Control English abbreviation: RRC) connection with the primary cell, and then configures the secondary In a cell, the user equipment can use the TDD carrier and the FDD carrier to transmit data together.

In the prior art, operators generally set the priority of cells in the TDD frequency band higher than that of cells in the FDD frequency band, so as to fully utilize TDD resources to share traffic for the cells in the FDD frequency band. For a user equipment that initially accesses a carrier aggregation network, if the user equipment is simultaneously in the overlapping coverage area of a cell in the TDD frequency band and a cell in the FDD frequency band, the user equipment directly accesses a cell in the TDD frequency band, for example, user equipment 1 in Figure 1 . However, currently all user equipments only support FDD as a primary carrier and TDD as a secondary carrier. When user equipment camps on a cell in the TDD frequency band and uses TDD as the primary carrier, it is no longer possible to use carrier aggregation technology to configure a cell in the FDD frequency band as a secondary cell, and use FDD as a secondary carrier, and it is impossible to use TDD and FDD carriers together. Data transmission, but can only be in the state of single-carrier data transmission, and cannot effectively use network resources to increase the transmission rate.

Contents of the invention

Embodiments of the present invention provide a method and device for user equipment to access a carrier aggregation network, which can effectively use network resources to increase transmission rates.

In order to achieve the above object, the technical solution adopted in the embodiment of the present invention is:

In the first aspect, a method for user equipment accessing a carrier aggregation network is provided, which is applied to a base station, including:

receiving a first message sent by the user equipment, where the first message includes the capability of the user equipment, and the capability of the user equipment is used to indicate that the user equipment supports a frequency division duplex FDD frequency band and a time division duplex TDD frequency band, the The user equipment is registered in a first cell, and the first cell is a TDD frequency band cell;

Judging that the load value of the second cell is less than or equal to the threshold value, the second cell is a cell in the FDD frequency band, the coverage of the first cell is within the coverage of the second cell, and the priority of the first cell is higher than the priority of the second cell;

sending a handover indication to the user equipment, where the handover indication is used to instruct the user equipment to handover to the second cell;

sending a configuration message to the user equipment, where the configuration message is used to instruct the user equipment to configure the first cell.

In a second aspect, a base station is provided, including:

The receiving unit is configured to receive a first message sent by the user equipment, the first message includes the capability of the user equipment, and the capability of the user equipment is used to indicate that the user equipment supports frequency division duplex FDD frequency band and time division duplex In the TDD frequency band, the user equipment is registered in a first cell, and the first cell is a cell in the TDD frequency band;

a processing unit, configured to determine that the load value of the second cell is less than or equal to a threshold value, the second cell is a cell in the FDD frequency band, the coverage of the first cell is within the coverage of the second cell, the the priority of the first cell is higher than the priority of the second cell;

a sending unit, configured to send a handover instruction to the user equipment, where the handover instruction is used to instruct the user equipment to switch to the second cell;

The sending unit is further configured to send a configuration message to the user equipment, where the configuration message is used to instruct the user equipment to configure the first cell.

Compared with the prior art, the method and device for user equipment accessing a carrier aggregation network provided by the embodiments of the present invention cannot effectively use network resources when the user equipment camps on a cell in the TDD frequency band and uses TDD as the main carrier. Increase transfer rate. According to the capability of the user equipment reported by the user equipment, the present invention instructs the user equipment to support frequency division duplex FDD frequency band and time division duplex TDD frequency band, and judges that the load value of the cell in the FDD frequency band where the user equipment is located is less than or equal to a threshold value, send a handover instruction to the user equipment, instructing the user equipment to switch to a cell in the FDD frequency band, and then send a configuration message to the user equipment, instructing the user equipment to configure a cell in the TDD frequency band, so that the user equipment is in The carrier aggregation state enables the user equipment to use the TDD carrier and the FDD carrier to transmit data together, and can effectively use network resources to increase the transmission rate.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 provides a schematic diagram of a carrier aggregation network in the prior art;

FIG. 2 is a flowchart of a method for user equipment to access a carrier aggregation network according to an embodiment of the present invention;

FIG. 3 is a flow chart of another method for user equipment to access a carrier aggregation network according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a base station provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1

An embodiment of the present invention provides a method for a user equipment to access a carrier aggregation network, which is applied to a base station, as shown in FIG. 2 , including:

Step 101. Receive a first message sent by a user equipment.

The first message includes the capability of the user equipment, and the capability of the user equipment is used to indicate that the user equipment supports a frequency division duplex FDD frequency band and a time division duplex TDD frequency band, and the user equipment is registered in the first cell, The first cell is a cell in the TDD frequency band.

Step 102, judging that the load value of the second cell is less than or equal to a threshold value.

The second cell is a cell in the FDD frequency band, the coverage of the first cell is within the coverage of the second cell, and the priority of the first cell is higher than that of the second cell.

Step 103: Send a handover instruction to the user equipment, where the handover instruction is used to instruct the user equipment to handover to the second cell.

Step 104: Send a configuration message to the user equipment, where the configuration message is used to instruct the user equipment to configure the first cell.

Compared with the prior art, when the user equipment camps on a cell in the TDD frequency band and uses TDD as the main carrier, network resources cannot be effectively used to increase the transmission rate. According to the capability of the user equipment reported by the user equipment, the present invention instructs the user equipment to support frequency division duplex FDD frequency band and time division duplex TDD frequency band, and judges that the load value of the cell in the FDD frequency band where the user equipment is located is less than or equal to a threshold value, send a handover instruction to the user equipment, instructing the user equipment to switch to a cell in the FDD frequency band, and then send a configuration message to the user equipment, instructing the user equipment to configure a cell in the TDD frequency band, so that the user equipment is in The carrier aggregation state enables the user equipment to use the TDD carrier and the FDD carrier to transmit data together, and can effectively use network resources to increase the transmission rate.

Example 2

An embodiment of the present invention provides a method for user equipment to access a carrier aggregation network, which is applied to the carrier aggregation network shown in Figure 1, assuming that the cell within the coverage of the eNB is the first cell, the first cell is the primary cell, and the eNB The cell of the micro base station within the coverage is the second cell, and the second cell is the secondary cell, as shown in FIG. 3 , the method includes:

Step 201, user equipment 1 sends a registration request to eNB.

User equipment 1 enters an area where the coverage of the first cell and the coverage of the second cell overlap, and since the priority of the first cell is higher than the priority of the second cell, the user equipment sends a registration request to the eNB, and the The registration request includes the cell number of the first cell, and is used to request the eNB to register with the first cell, the first cell is a cell in the TDD frequency band, and the second cell is a cell in the FDD frequency band. It should be noted that the eNB may manage the cells of the eNB and the cells of the micro base stations within the coverage of the eNB in a unified manner.

Step 202, the eNB sends a registration response message to the user equipment 1 .

User equipment 1 registers with the first cell according to the registration response message.

Step 203, the user equipment 1 sends a first message to the eNB.

The first message includes the capability of the user equipment 1, and the capability of the user equipment 1 is used to indicate that the user equipment 1 supports a frequency division duplex FDD frequency band and a time division duplex TDD frequency band.

Step 204, the eNB judges that the load value of the second cell is less than or equal to the threshold value.

After receiving the capability of the user equipment 1 sent by the user equipment 1, the eNB judges whether the load value of the second cell where the user equipment 1 is located is less than or equal to a threshold value. Usually, the load value can be judged by the occupancy rate α of a physical resource block (English full name: physicalresource block, English abbreviation: PRB). Similarly, the threshold value of the load value may be the threshold value α _th of the occupancy rate of the PRB. Specifically, the eNB can determine whether the PRB occupancy rate α of the second cell is less than or equal to the PRB occupancy threshold α _th , wherein the PRB occupancy threshold can be set by the operator itself, and the operator can refer to the cell The historical PRB occupancy conditions are set. Generally, the PRB occupancy rate threshold α _th can be set to 70%. It should be noted that when judging the load value of the cell, the service type used by the user equipment may also be referred to, or the load value of the cell may be judged by referring to the service type together with the PRB occupancy rate.

When the load value of the second cell is less than or equal to the threshold value, step 205 is performed. When the load value of the second cell is less than or equal to the threshold value, it indicates that the load of the cell in the FDD frequency band is low, and even if the user equipment is handed over to the cell in the FDD frequency band, it will not cause too much burden on the cell in the FDD frequency band.

When the load value of the second cell is less than or equal to the threshold value, step 206 is performed.

Step 205, the eNB sends a first radio resource control connection reconfiguration message to the user equipment 1 .

The first radio resource control connection reconfiguration message (Radio Resource Control ConnectionReconfiguration) includes the handover indication, and the handover indication is used to instruct the user equipment 1 to handover to the second cell.

Further, the first RRC connection reconfiguration message further includes a handover cause field (handovercause), the handover cause field is a newly added field in the first RRC connection reconfiguration message, and the handover cause field is located in the first RRC connection reconfiguration message. In the Mobility ControlInfo field of a RRC connection reconfiguration message. When the handover reason field is set to "1", it indicates a fallback to the carrier aggregation state; when the handover reason field is set to "0", it indicates other handover, that is, the handover caused by carrier aggregation is not required, but caused by other reasons switch.

Step 206, the eNB sends an indication to the user equipment 1 to continue camping on the first cell.

Step 207, the user equipment 1 switches to the second cell.

For the specific process of switching the user equipment 1 to the second cell, reference may be made to the handover process in LTE, which will not be repeated here.

Step 208 , the eNB sends a second radio resource control connection reconfiguration message to the user equipment 1 .

The second radio resource control connection reconfiguration message is used to instruct the user equipment to configure the first cell.

Step 209, the user equipment 1 configures the first cell according to the second radio resource control connection reconfiguration message.

User equipment 1 configures the first cell according to the second radio resource control connection reconfiguration message, sends a second radio resource control connection reconfiguration complete message to the eNB, and the eNB activates the first cell.

Compared with the prior art, when the user equipment camps on a cell in the TDD frequency band and uses TDD as the main carrier, network resources cannot be effectively used to increase the transmission rate. According to the capability of the user equipment reported by the user equipment, the present invention instructs the user equipment to support frequency division duplex FDD frequency band and time division duplex TDD frequency band, and judges that the load value of the cell in the FDD frequency band where the user equipment is located is less than or equal to a threshold value, send a handover instruction to the user equipment, instructing the user equipment to switch to a cell in the FDD frequency band, and then send a configuration message to the user equipment, instructing the user equipment to configure a cell in the TDD frequency band, so that the user equipment is in The carrier aggregation state enables the user equipment to use the TDD carrier and the FDD carrier to transmit data together, and can effectively use network resources to increase the transmission rate.

In particular, if the user equipment is within the coverage of the cell of the eNB and the coverage of at least two cells of the micro base station, the user equipment first measures the signal quality from the user equipment to each micro base station, and selects the best signal quality The cell of a micro base station is registered. Then execute step 203 to step 209 .

Example 3

An embodiment of the present invention provides a user equipment 30, as shown in FIG. 4 , including:

The receiving unit 301 is configured to receive a first message sent by the user equipment, the first message includes the capability of the user equipment, and the capability of the user equipment is used to indicate that the user equipment supports frequency division duplex FDD frequency band and time division A duplex TDD frequency band, the user equipment is registered in a first cell, and the first cell is a cell in the TDD frequency band;

The processing unit 302 is configured to determine that the load value of the second cell is less than or equal to a threshold value, the second cell is a cell in the FDD frequency band, and the coverage of the first cell is within the coverage of the second cell, so The priority of the first cell is higher than the priority of the second cell;

A sending unit 303, configured to send a handover instruction to the user equipment, where the handover instruction is used to instruct the user equipment to switch to the second cell;

The sending unit 303 is further configured to send a configuration message to the user equipment, where the configuration message is used to instruct the user equipment to configure the first cell.

Specifically, the configuration message is a second radio resource control connection reconfiguration message.

The processing unit 302 is specifically used for:

It is judged that the occupancy rate of the PRB of the second cell is less than or equal to the PRB occupancy rate threshold.

If the load value of the second cell is less than or equal to a threshold value, the sending unit 303 is specifically configured to:

sending a first radio resource control connection reconfiguration message to the user equipment, where the first radio resource control connection reconfiguration message includes the handover indication. The first radio resource control connection reconfiguration message further includes a handover cause field, and the handover cause field is located in the mobility control information field of the first radio resource control connection reconfiguration message.

Compared with the prior art, when the user equipment camps on a cell in the TDD frequency band and uses TDD as the main carrier, network resources cannot be effectively used to increase the transmission rate. According to the capability of the user equipment reported by the user equipment, the present invention instructs the user equipment to support frequency division duplex FDD frequency band and time division duplex TDD frequency band, and judges that the load value of the cell in the FDD frequency band where the user equipment is located is less than or equal to a threshold value, send a handover instruction to the user equipment, instructing the user equipment to switch to a cell in the FDD frequency band, and then send a configuration message to the user equipment, instructing the user equipment to configure a cell in the TDD frequency band, so that the user equipment is in The carrier aggregation state enables the user equipment to use the TDD carrier and the FDD carrier to transmit data together, and can effectively use network resources to increase the transmission rate.

Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the above-described devices and units can refer to the corresponding process in the foregoing method embodiments, and details are not repeated here.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (8)

1. A method for user equipment to access a carrier aggregation network, characterized in that it is applied to a base station, comprising: receiving a first message sent by the user equipment, where the first message includes the capability of the user equipment, and the capability of the user equipment is used to indicate that the user equipment supports a frequency division duplex FDD frequency band and a time division duplex TDD frequency band, the The user equipment is registered in a first cell, and the first cell is a TDD frequency band cell; Judging that the load value of the second cell is less than or equal to the threshold value, the second cell is a cell in the FDD frequency band, the coverage of the first cell is within the coverage of the second cell, and the priority of the first cell is higher than the priority of the second cell; sending a handover indication to the user equipment, where the handover indication is used to instruct the user equipment to handover to the second cell; sending a configuration message to the user equipment, where the configuration message is a second radio resource control connection reconfiguration message, and the configuration message is used to instruct the user equipment to configure the first cell so that the user equipment is in carrier aggregation state, so that the user equipment uses the TDD carrier and the FDD carrier to transmit data together. 2. The method according to claim 1, wherein said judging that the load value of the second cell is less than or equal to a threshold value comprises: It is judged that the occupancy rate of the PRB of the second cell is less than or equal to the PRB occupancy rate threshold. 3. The method according to claim 2, wherein the sending the handover instruction to the user equipment comprises: sending a first radio resource control connection reconfiguration message to the user equipment, where the first radio resource control connection reconfiguration message includes the handover indication. 4. The method according to claim 3, wherein the first radio resource control connection reconfiguration message further includes a handover reason field, and the handover reason field is located in the first radio resource control connection reconfiguration message Mobile control information field. 5. A base station, characterized in that, comprising: The receiving unit is configured to receive a first message sent by the user equipment, the first message includes the capability of the user equipment, and the capability of the user equipment is used to indicate that the user equipment supports frequency division duplex FDD frequency band and time division duplex In the TDD frequency band, the user equipment is registered in a first cell, and the first cell is a cell in the TDD frequency band; a processing unit, configured to determine that the load value of the second cell is less than or equal to a threshold value, the second cell is a cell in the FDD frequency band, the coverage of the first cell is within the coverage of the second cell, the the priority of the first cell is higher than the priority of the second cell; a sending unit, configured to send a handover instruction to the user equipment, where the handover instruction is used to instruct the user equipment to switch to the second cell; The sending unit is further configured to send a configuration message to the user equipment, where the configuration message is a second radio resource control connection reconfiguration message, and the configuration message is used to instruct the user equipment to configure the first cell, so that The user equipment is in the carrier aggregation state, so that the user equipment uses the TDD carrier and the FDD carrier to transmit data together. 6. The base station according to claim 5, wherein the processing unit is specifically configured to: It is judged that the occupancy rate of the PRB of the second cell is less than or equal to the PRB occupancy rate threshold. 7. The base station according to claim 6, wherein when the load value of the second cell is less than or equal to a threshold value, the sending unit is specifically configured to: sending a first radio resource control connection reconfiguration message to the user equipment, where the first radio resource control connection reconfiguration message includes the handover indication. 8. The base station according to claim 7, wherein the first radio resource control connection reconfiguration message further includes a handover cause field, and the handover cause field is located in the first radio resource control connection reconfiguration message Mobile control information field.