WO2017028017A1 - Communication method, network device, and user equipment - Google Patents

Abstract

Embodiments of the present invention provide a wireless communication method, network device, and user equipment (UE), the method comprising: generating a configuration message comprising a first candidate configuration and a second candidate configuration of a radio bearer, wherein the first candidate configuration configures a DL RLC PDU size to be a fixed size, and the second candidate configuration configures the DL RLC PDU size to be a flexible size; and transmitting the configuration message to a UE. Thus, if cell capabilities are inconsistent when a UE undergoes a crossover including a state transition and a cell reselection, a configuration message generated by a network device can be used for configuring, according to the configuration message, a valid DL RLC PDU size after the cell reselection. Embodiments of the present invention provide a method for configuring a valid DL RLC PDU size when a UE undergoes a crossover including a state transition and a cell reselection.

Description

Communication method, network device and user equipment Technical field

The present invention relates to the field of communications, and in particular, to a method, a network device, and a user equipment for wireless communication.

Background technique

In the Universal Mobile Telecommunications System (UMTS), the user equipment (English User Equipment, UE for short) has a connected state and an idle state in the Radio Resource Control (RRC) state. In the idle state, the UE can receive broadcasts and pages; in the connected state, the UE can perform data transmission. The connection state is divided into: a Cell Dedicated Channel (CELL_DCH) state, a Cell Forward Access Channel (CELL_FACH) state, and a Cell Paging Channel (English Cell Paging Channel). CELL_PCH) state and UMTS Terrestrial Radio Access Network (UTRAN) URRAN Registration Area Paging Channel (URA_PCH) state.

When the UE initiates a state transition of CELL_DCH to CELL_FACH in a cell supporting the enhanced forward access channel E-FACH, in general, the downlink radio link control protocol data unit size is set in the reconfiguration message for establishing the radio bearer ( The English Down Link Radio Link Control Protocol Data Unit (DL RLC PDU size) is configured as a variable size (English flexible size). If during the state transition of CELL_DCH to CELL_FACH, the UE initiates cell reselection and reselects to a cell that does not support E-FACH. The target cell needs to carry the UE, such as the radio bearer information reconfiguration list (English RB information to reconfigure list), in the message sending update confirmation (English Cell Update Confirm) message, so that the target cell can The information about the DL RLC PDU size and the radio bearer mapping information (RB mapping info) is allocated to the UE. However, the current 3GPP protocol specifies that the target cell cannot be re-established during the process of the UE performing state transition and cell reselection. Configure the RB-related parameters to the UE. Therefore, the downlink RLC PDU size parameter of the UE is the flexible RLC PDU size configured for the previous original cell reconfiguration message. The target cell is an E-FACH. In this case, the DL RLC PDU size parameter of the UE is an invalid parameter, which may cause the UE to transmit the radio bearer (English Traffic Bearer English TRB) to send a reset, and even cause a call drop problem.

Summary of the invention

The embodiment of the invention provides a method, a network device and a user equipment for wireless communication, which can configure a downlink radio link control protocol data unit size when the state transition and the cell reselection procedure are crossed for the user equipment.

The first aspect provides a method for wireless communication, including: generating a configuration message, where the configuration message includes a first candidate configuration and a second candidate configuration of a radio bearer, where the first candidate configuration is a downlink wireless chain The path control protocol data unit size DL RLC PDU size is set to a fixed size, and the second candidate configuration is to set the DL RLC PDU size to a variable size; the configuration message is sent to the user equipment UE.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the configuration message includes a mapping information field of the radio bearer, and a first one of the at least one multiplexing option field of the mapping information field The DL RLC PDU size of the Multiplexing Option field is set to a fixed size.

In conjunction with the first aspect or the first possible implementation of the first aspect, in a second possible implementation of the first aspect, the DL in the second multiplexing option field in the at least one multiplexing option field The RLC PDU size can be set to one of a fixed size and a variable size.

With reference to the first aspect or the first to second possible implementation manners of the first aspect, in a third possible implementation manner of the first aspect, the configuration message includes downlink radio link control protocol information, The DL RLC PDU size of the radio bearer in the downlink radio link control protocol information is set to a variable size.

With reference to the first aspect or the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the UE is from a first link state to a second link state During the migration, the reconfiguration message is sent to the UE, where the first link state includes a cell dedicated channel CELL_DCH state; and the second link state includes at least one of the following states: a cell forward connection Incoming channel CELL_FACH state, cell paging channel CELL_PCH state and registration area paging channel URA_PCH state.

A second aspect provides a method for wireless communication, including: receiving, by a user equipment, a configuration message sent by a network device, where the configuration message includes a first candidate configuration and a second candidate of a radio bearer. a configuration, wherein the first candidate configuration is to set a downlink radio link control protocol data unit size DL RLC PDU size to a fixed size, and the second candidate configuration is to set a DL RLC PDU size to a variable size; The UE determines to use a fixed-size DL RLC PDU size or a variable-size DL RLC PDU size when communicating with the target cell according to the configuration message and the cell capability of the target cell after the cell reselection.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the configuration message includes a mapping information field of the radio bearer, and a first one of the at least one multiplexing option field of the mapping information field The DL RLC PDU size of the Multiplexing Option field is set to DL RLC PDU size.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the DL in the second multiplexing option field in the at least one multiplexing option field The RLC PDU size can be set to one of a fixed size and a variable size.

With reference to the second aspect or the first to second possible implementation manners of the second aspect, in a third possible implementation manner of the second aspect, the UE is configured from a first link state to a second link state Receiving, in the migration, receiving a reconfiguration message sent by the network device, where the first link state includes a cell dedicated channel CELL_DCH state; and the second link state includes at least one of the following states: a cell forward connection Incoming channel CELL_FACH state, cell paging channel CELL_PCH state and registration area paging channel URA_PCH state.

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the UE determines, according to the configuration message and a cell capability of a target cell after cell reselection, The fixed cell DL RLC PDU size or the variable size DL RLC PDU size is used when the target cell performs communication, including: when the UE needs to switch from the original cell supporting the enhanced forward access channel E-FACH state to not supporting In the target cell of the E-FACH state, the DL RLC PDU size of the RLC entity corresponding to the radio bearer is set to a fixed size according to the DL RLC PDU size in the at least one multiplexing option field.

In a third aspect, a network device is provided, including: a generating unit, where the generating unit is configured to generate a configuration message, where the configuration message includes a first candidate configuration and a second candidate configuration of a radio bearer, where the first candidate It is configured to set a downlink radio link control protocol data unit size DL RLC PDU size to a fixed size, the second candidate configuration is to set a DL RLC PDU size to a variable size, and a sending unit, the sending unit is configured to be used by the user The device UE sends the configuration message.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the configuration message The mapping information field of the radio bearer is included, and a DL RLC PDU size of a first multiplexing option field in at least one multiplexing option field of the mapping information field is set to a fixed size.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the DL in the second multiplexing option field in the at least one multiplexing option field The RLC PDU size can be set to one of a fixed size and a variable size.

With the third aspect or the first to the second possible implementation manners of the third aspect, in a third possible implementation manner of the third aspect, the configuration message includes downlink radio link control protocol information, The DL RLC PDU size of the radio bearer in the downlink radio link control protocol information is set to a variable size.

With reference to the third aspect or the first to third possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect, the UE is in the first link state to the second link state During the migration, the reconfiguration message is sent to the UE, where the first link state includes a cell dedicated channel CELL_DCH state; and the second link state includes at least one of the following states: a cell forward connection Incoming channel CELL_FACH state, cell paging channel CELL_PCH state and registration area paging channel URA_PCH state.

A fourth aspect provides a user equipment, including: a receiving unit, configured to receive a configuration message sent by a network device, where the configuration message includes a first candidate configuration and a second candidate configuration of a radio bearer, where The first candidate configuration is to set a downlink radio link control protocol data unit size DL RLC PDU size to a fixed size, and the second candidate configuration is to set a DL RLC PDU size to a variable size; a determining unit, the determining And the unit is configured to determine, according to the configuration message and the cell capability of the target cell after the cell reselection, a fixed size DL RLC PDU size or a variable size DL RLC PDU size when communicating with the target cell.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the configuration message includes a mapping information field of the radio bearer, where a first one of the at least one multiplexing option field of the mapping information field is The DL RLC PDU size of the Multiplexing Option field is set to a fixed size.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the DL in the second multiplexing option field in the at least one multiplexing option field The RLC PDU size can be set to one of a fixed size and a variable size.

With reference to the fourth aspect or the first to the second possible implementation manners of the fourth aspect, in a third possible implementation manner of the fourth aspect, the determining unit is further configured to: determine that a state is required from the first link Switching to a second link state, wherein the first link state comprises a cell dedicated channel CELL_DCH state; the second link state includes at least one of a cell forward access channel CELL_FACH state, a cell paging channel CELL_PCH state, and a registration zone paging channel URA_PCH state.

With reference to the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the determining unit is specifically configured to: when the UE needs to support the enhanced forward access channel E- When the original cell in the FACH state is switched to the target cell that does not support the E-FACH state, the DL RLC PDU size of the RLC entity corresponding to the radio bearer is set according to the DL RLC PDU size in the at least one multiplexing option field. Fixed size.

In the embodiment of the present invention, the network device generates a configuration message, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to a fixed size, and the second candidate configuration is to use the DL. The RLC PDU size is set to a variable size. The configuration message is used to configure a legal DL RLC PDU size according to the configuration message after the cell reselection is performed, when the user equipment performs the state transition and the cell reselection. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

FIG. 1 is a schematic flowchart of a method for wireless communication according to an embodiment of the present invention.

2 is a schematic flowchart of a method of wireless communication according to another embodiment of the present invention.

FIG. 3 is a schematic flowchart of a method of wireless communication according to another embodiment of the present invention.

FIG. 4A is a schematic flowchart of a method for wireless communication according to another embodiment of the present invention.

FIG. 4B is a schematic flowchart of a method for wireless communication according to another embodiment of the present invention.

FIG. 5 is a schematic block diagram of a network device for wireless communication according to an embodiment of the present invention.

FIG. 6 is a schematic block diagram of a user equipment for wireless communication according to another embodiment of the present invention.

FIG. 7 is a schematic block diagram of a network device for wireless communication according to another embodiment of the present invention.

FIG. 8 is a schematic diagram of a user equipment for wireless communication according to another embodiment of the present invention.

detailed description

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example, Global Mobile Communication (GSM) system, code division multiple access (CDMA, English Code Division Multiple Access) System, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS, General Packet Radio Service), Long Term Evolution (LTE) system, LTE frequency Duplex (FDD, English Frequency Division Duplex) system, LTE time division duplex (TDD, English Time Division Duplex), Universal Mobile Telecommunications System (UMTS, English Universal Mobile Telecommunication System) or Global Interconnected Microwave Access (referred to as WiMAX, English Worldwide Interoperability for Microwave Access) communication systems, etc.

User equipment (UE, English User Equipment), also known as mobile terminal (MT, English Mobile Terminal), mobile user equipment, etc., can be accessed via a radio access network (for example, RAN, English Radio Access Network) One or more core networks communicate, the user equipment can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, can be portable, pocket, handheld, built-in computer Or a mobile device on the car.

The state transition of the user equipment is mainly done through the reconfiguration process. The process of the state transition may be initiated by the network side, such as the radio network controller RNC, or may be initiated by the UE.

Taking the crossover process of CELL_DCH to CELL_FACH state transition and handover from an E-FACH cell to a legacy FACH cell as an example, the reconfiguration process of the cross process can be as follows:

The network side sends radio bearer reconfiguration signaling to the UE, indicating that the target state of the state transition of the UE is CELL_FACH;

The UE performs cell reselection and is reselected by the current E-FACH cell to a legacy FACH cell;

The network device returns a Cell Update Confirm message to the UE;

After receiving the Cell Update Confirm message, the UE replies to the network side with a radio bearer reconfiguration complete message (English Radio Bearer Reconfiguration Complete) message;

The UE migrates the state from CELL_DCH to CELL_FACH and switches from one E-FACH cell to one legacy FACH cell.

FIG. 1 is a schematic flowchart of a method for wireless communication according to an embodiment of the present invention. The execution subject network device of the method may be a radio network controller (English Radio Network Controller, RNC for short). As shown in FIG. 1, the method 100 includes:

110. Generate a configuration message, where the configuration message includes a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the downlink radio link control protocol data unit size DL RLC PDU size to a fixed size, The second candidate configuration is to set the DL RLC PDU size to a variable size.

120. Send the configuration message to the user equipment UE.

It should be understood that in the crossover procedure of the state transition of the UE from CELL_DCH to CELL_FACH and the handover from one E-FACH cell to the legacy FACH cell, since the existing protocol requires the ongoing ongoing reconfiguration procedure to be performed, the target cell is to the UE. The message sending the Cell Update Confirm cannot carry the configuration information of the target cell, and the DL RLC PDU size supported by the target cell cannot be carried. Therefore, since the original cell is an E-FACH cell, the network device sends the status during the state transition. The DL RLC PDU size carried in the Radio Bearer Reconfiguration is flexible size. However, for the target cell of the legacy FACH, the configuration is invalid for the target cell, and thus may cause a TRB reset of the UE and even cause a call drop problem.

Therefore, the configuration message in step 110 carries both the variable-size DL RLC PDU size configured for the radio bearer and the fixed-size DL RLC PDU size configured for the radio bearer, and thus can be applied to the UE for status. The UE selects the legal DL RLC PDU size after the cell reselection according to the first candidate configuration and the second candidate configuration of the configuration message, when the cell capability is inconsistent between the cell and the cell reselection. It should be understood that the radio bearer in step 110 may be a specific radio bearer when the user equipment communicates with the network device, and may also be any radio bearer therein, which is not limited by the present invention.

In the embodiment of the present invention, the network device generates a configuration message, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to a fixed size, and the second candidate configuration is to use the DL. The RLC PDU size is set to a variable size. The configuration message is used to configure a legal DL RLC PDU size according to the configuration message after the cell reselection is performed, when the user equipment performs the state transition and the cell reselection. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

Optionally, as an embodiment of the present invention, the configuration message includes a mapping information field of a radio bearer, and a DL RLC PDU size of the first multiplexing option field in the at least one multiplexing option field of the mapping information field is set to be fixed. size.

Specifically, the configuration message includes a mapping information RB mapping info field of the radio bearer, for example, the configuration message is a Radio Bear Reconfiguration (RBR) message, and the RBR message in the state transition is used to send the RB mapping to the UE. Info, at least one multiplexing option in the RB mapping info, the DL RLC PDU size carried by the multiplexing option is a fixed size fixed size. That is, when the UE is handed over from an E-FACH cell to a legacy FACH cell, when the target cell is a legacy FACH cell, the UE carries the fixed size DL PDU size configuration in the previously received RBR message, so the UE The current DL RLC PDU size is configured as a fixed size according to the DL RLC PDU size carried in at least one multiplexing option in the RB mapping info, and the parameter caused by the configuration that only carries the flexible size in the RBR message is invalid. It should be understood that the parameter is invalid. The configuration message is not limited to the RBR message, and may be other radio bearer setup messages, and the present invention is not limited thereto.

Table 1 shows the addition of the DL RLC PDU size configured as fixed size in the multiplexing option of mapping info.

Table 1

Optionally, as an embodiment of the present invention, the DL RLC PDU size in the second multiplexing option field in the second multiplexing option field of the at least one multiplexing option may be set to a fixed size and a variable size. one of.

That is, when the RB mapping info includes the DL RLC PDU size carried by the at least one multiplexing option in the multiplexing option, the DL RLC PDU size may be selected and configured in the fixed size or the flexible size, and the DL RLC PDU size is carried in the multiplexing option. The transport channel types match.

Table 2 shows the addition of the DL RLC PDU size configured as an optional flexible size or fixed size in the multiplexing option of the mapping info.

Table 2

Optionally, as an embodiment of the present invention, the configuration message includes downlink radio link control protocol information, where the DL RLC PDU size of the radio bearer is set to a variable size.

Specifically, for example, when the user equipment migrates from the CELL_DCH state to the CELL_FACH state, the downlink radio link control protocol information RLC info in the state transition reconfiguration message carries the DL RLC PDU size configured as flexible size. The user equipment in the cell supporting E-FACH will use the DL RLC PDU size to communicate with the cell, and when the user equipment switches to not support the E-FACH cell, the fixed size carried in other cells according to the configuration message will be required. The DL RLC PDU size sets the DL RLC PDU size of the radio bearer.

Optionally, as an embodiment of the present invention, when the UE migrates from the first link state to the second link state, sending the reconfiguration message to the UE, where the first link state includes a cell dedicated channel CELL_DCH state; The second link state includes at least one of the following states: before the cell The access channel CELL_FACH state, the cell paging channel CELL_PCH state, and the registration area paging channel URA_PCH state.

It should be understood that the main advantage of enhancing FACH and enhancing PCH is that when the UE is in the CELL_FACH state, CELL_PCH or URA_PCH state, a High Speed Downlink Shared Channel (HS-DSCH for short) can be used. Enhanced FACH (ie, E-FACH) characteristics include the use of the HS-DSCH channel while supporting the downlink L2 enhancement feature.

Specifically, when the UE needs to migrate from the first link state to the second link state in a cell supporting enhanced FACH, in order to better utilize the L2 enhancement feature, the downlink RLC PDU size is configured in the parameter configuration. If the cell reselection occurs during the state transition, and the cell is not supported by the E-FACH, the current DL RLC PDU size is invalid. Therefore, the network side needs to send multiple configurations. DL RLC PDU size for fixed size.

Optionally, as an embodiment of the present invention, the network device generates a configuration message, where the configuration message is used to set the default DL RLC PDU size of the UE to a fixed size fixed size.

Specifically, the network device configures a default DL RLC PDU size for the UE by means of a broadcast message or other default configuration, in addition to the UE state transition or the cell reselection procedure, and the present invention includes but is not limited thereto. When the UE detects that the current DL RLC PDU size is invalid, for example, the target cell capability to which the handover is not supported, for example, the target cell is a legacy cell of the Legacy FACH, and the cell to which the UE belongs before the cell handover is an E-FACH cell, so configuration The downlink RLC PDU size of the flexible size will be invalid. In this case, the UE can communicate using the default downlink RLC PDU size (fixed size).

Optionally, as an embodiment of the present invention, the method further includes: receiving a trigger message sent by the UE, where the trigger message is used to indicate that the network device configures a DL RLC PDU size for the UE, and sends the configuration message to the UE, where the configuration message is sent. The DL RLC PDU size configured by the network device for the UE is carried.

Specifically, when the UE detects that the current downlink RLC PDU size in the target cell is invalid, for example, the target cell capability to which the handover is performed is not supported, for example, the target cell is a cell of the Legacy FACH, and the cell to which the UE belongs before the cell handover is The E-FACH cell, therefore, the DL RLC PDU size configured with flexible size will be invalid, triggering a cell update procedure and requesting the network device to reconfigure the legal DL RLC PDU size.

It should be understood that the trigger message may be a response message of a reconfiguration message, such as a reconfiguration failure. The information is requested to re-configure the legal configuration information on the network side. The present invention is not limited thereto, and any other message that can trigger the network device to perform DL RLC PDU size for the UE falls within the protection scope of the present invention.

In the embodiment of the present invention, the network device generates a configuration message, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to a fixed size, and the second candidate configuration is to use the DL. The RLC PDU size is set to a variable size. The configuration message is used to configure a legal DL RLC PDU size according to the configuration message after the cell reselection is performed, when the user equipment performs the state transition and the cell reselection. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

In the crossover procedure of the state transition of CELL_DCH to CELL_FACH and the handover from one E-FACH cell to the legacy FACH cell, since the existing protocol requires that the ongoing ongoing reconfiguration process needs to be performed, the Cell Update Confirm is sent to the UE in the target cell. The configuration information of the target cell cannot be carried in the message, and the DL RLC PDU size supported by the target cell cannot be carried. Therefore, since the original cell is an E-FACH cell, the Radio Bearer Reconfiguration sent by the network device is carried in the state transition process. The DL RLC PDU size is flexible size. However, for the target cell of the legacy FACH, the configuration is invalid for the target cell, and thus may cause a TRB reset of the UE, and even cause a call drop problem. Therefore, by carrying a fixed-size and variable-size DL RLC PDU size in the configuration message, the user equipment can select a legal DL RLC PDU size configuration, and the embodiment of the present invention can solve the abnormal call drop in the D2F and CU process cross scenarios. The problem is to improve key performance indicators (English Key Performance Indicators, KPI for short).

FIG. 2 is a schematic flowchart of a method for wireless communication according to another embodiment of the present invention. The execution body of the method may be a UE. As shown in FIG. 2, the method 200 includes:

210. The user equipment UE receives a configuration message sent by the network device, where the configuration message includes a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is a downlink radio link control protocol data unit size DL RLC PDU. The size is set to a fixed size, and the second candidate configuration is to set the DL RLC PDU size to a variable size.

220. The UE determines, according to the configuration message and the cell capability of the target cell after the cell reselection, that the DL RLC PDU size or the variable size DL RLC PDU size is used when communicating with the target cell.

Specifically, in the crossover process of the state transition of the UE from CELL_DCH to CELL_FACH and the handover from one E-FACH cell to the legacy FACH cell, since the existing protocol requires that the ongoing ongoing reconfiguration process needs to be performed, the target cell is to the UE. The message sending the Cell Update Confirm cannot carry the configuration information of the target cell, and the DL RLC PDU size supported by the target cell cannot be carried. Therefore, since the original cell is an E-FACH cell, the network device sends the status during the state transition. The DL RLC PDU size carried in the Radio Bearer Reconfiguration is flexible size. However, for the target cell of the legacy FACH, the configuration is invalid for the target cell, and thus may cause a TRB reset of the UE and even cause a call drop problem.

It should be understood that, in step 210, the configuration message received by the UE may be an RBR, and may also be a message for other radio bearers, and the present invention is not limited thereto. It should be understood that the radio bearer in step 210 may be a specific radio bearer when the user equipment communicates with the network device, and may also be any one of the radio bearers, which is not limited by the present invention.

Specifically, in step 220, when the UE detects that the DL RLC PDU size configured before the cell reselection is an invalid parameter, the configuration message includes a DL RLC PDU size configured to be a fixed size and a DL RLC configured to be a variable size. The PDU size, so the UE can reconfigure the parameters of the cell reselection according to the DL RLC PDU size carried in the configuration message, and determine the DL RLC PDU size of the RLC entity corresponding to the bearer according to the first candidate configuration and the second candidate configuration.

In the embodiment of the present invention, the network device generates a configuration message, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to a fixed size, and the second candidate configuration is to use the DL. The RLC PDU size is set to a variable size. The configuration message is used to configure a legal DL RLC PDU size according to the configuration message after the cell reselection is performed, when the user equipment performs the state transition and the cell reselection. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

Optionally, as an embodiment of the present invention, the configuration message includes a mapping information field of the radio bearer, and a DL RLC PDU size of a first multiplexing option field in at least one multiplexing option field of the mapping information field. Set to a fixed size.

Specifically, the configuration message includes a mapping information RB mapping info field, for example, the configuration message is an RBR message, and the RBR message in the state transition includes RB mapping info, and at least one multiplexing option carried in the RB mapping info is a DL RLC PDU carried by the multiplexing option. Size is a fixed size fixed size. That is, when the UE is handed over from an E-FACH cell to a legacy FACH cell, when the target cell is a legacy FACH cell, the UE carries the fixed size DL PDU size configuration in the previously received RBR message, so the UE The current DL RLC PDU size is configured as a fixed size according to the DL RLC PDU size carried in at least one multiplexing option in the RB mapping info, and the parameter caused by the configuration that only carries the flexible size in the RBR message is invalid. It should be understood that the parameter is invalid. The configuration message is not limited to the RBR message, and may be other radio bearer setup messages, and the present invention is not limited thereto.

Optionally, as an embodiment of the present invention, the DL RLC PDU size in the second multiplexing option field in the at least one multiplexing option field may be set to one of a fixed size and a variable size.

That is, when the RB mapping info includes the DL RLC PDU size carried by the at least one multiplexing option in the multiplexing option, the DL RLC PDU size may be selected and configured in the fixed size or the flexible size, and the DL RLC PDU size is carried in the multiplexing option. The transport channel types match.

Optionally, as an embodiment of the present invention, when the UE migrates from the first link state to the second link state, sending the reconfiguration message to the UE, where the first link state includes a cell dedicated channel CELL_DCH state; The second link state includes at least one of the following: a cell forward access channel CELL_FACH state, a cell paging channel CELL_PCH state, and a registration area paging channel URA_PCH state.

Specifically, when the UE needs to migrate from the first link state to the second link state in a cell supporting enhanced FACH, in order to better utilize the L2 enhancement feature, the downlink RLC PDU size is configured in the parameter configuration. If the cell reselection occurs during the state transition, and the cell is not supported by the E-FACH, the current DL RLC PDU size is invalid. Therefore, the network side needs to send multiple configurations. The fixed size DL RLC PDU size.

It should be understood that the main advantage of enhancing FACH and enhancing PCH is that when the UE is in the CELL_FACH state, CELL_PCH or URA_PCH state, a High Speed Downlink Shared Channel (HS-DSCH for short) can be used. Enhanced FACH (ie, E-FACH) characteristics include the use of the HS-DSCH channel while supporting the downlink L2 enhancement feature.

Optionally, the UE determines to use a fixed-size DL RLC PDU size or a variable-size DL when communicating with the target cell according to the configuration message and the cell capability of the target cell after the cell reselection. The RLC PDU size includes: when the UE needs to switch from the original cell supporting the enhanced forward access channel E-FACH state to the target cell not supporting the E-FACH state, according to the DL RLC PDU size in the at least one multiplexing option field The DL RLC PDU size of the RLC entity corresponding to the radio bearer is set to a fixed size.

Specifically, the DL RLC PDU size carried by the at least one multiplexing option multiplexing option of the mapping information is a fixed size fixed size, and the UE may be configured according to the configuration message, because the configuration information includes the mapping information rb mapping info of the radio bearer. The DL RLC PDU size after the UE performs cell reselection is fixed size.

For example, the DL RLC PDU size of the UE after the cell reselection is set to the fixed size according to the configuration message. The specific step is: after the UE receives the configuration message, according to the cell capability, the current state, and the specific parameters in the configuration message. The information is selected as a different multiplexing option multiplexing option; when the UE migrates from the CELL_DCH to the CELL_FACH state, and the selected transport channel type corresponding to the multiplexing option is FACH, if the currently stored DL RLC PDU size (for example, it may be The size of the downlink RLC PDU size of the RLC info received in the reconfiguration message is configured as flexible size. If the current RLC PDU size is determined to be invalid, the UE will be fixed according to the configuration carried in the rb mapping info. The DL RLC PDU size of size sets the downlink RLC PDU size parameter of the RLC entity corresponding to the RB.

Specifically, the foregoing process further includes the UE re-establishing a receiving end RLC entity corresponding to the radio bearer.

Optionally, as an embodiment of the present invention, the UE determines to use a fixed-size DL RLC PDU size or a variable-size DL RLC PDU when communicating with the target cell according to the configuration message and the cell capability of the target cell after cell reselection. Size, including: when the UE needs to switch from the original cell that does not support the enhanced forward access channel E-FACH state to the target cell that supports the E-FACH state, the DL RLC PDU size setting in the at least one multiplexing option field The DL RLC PDU size of the RLC entity corresponding to the radio bearer is a variable size.

Specifically, the configuration message includes the mapping information rb mapping info of the radio bearer, and the DL RLC PDU size carried by the at least one multiplexing option included in the mapping information is a variable size flexible size, and the UE sets the UE to perform cell according to the configuration message. The reselected DL RLC PDU size includes: when the UE needs to switch to the E-FACH cell during the state transition, the DL RLC PDU currently carried by the UE is set according to the DL RLC PDU size carried by the at least one multiplexing Size is flexible size.

Optionally, as one embodiment of the present invention, multiple multiplexing in the mapping information The option carries the DL RLC PDU size configured as fixed size or the DL RLC PDU size configured as flexible size. Then, the UE receives the configuration message, directly ignores the configuration in the DL RLC PDU size in the RLC info, selects the multiplexing option according to the actual situation, and then configures the configuration based on the configuration information of the DL RLC PDU size in the selected multiplexing option. The downlink RLC PDU size parameter in the RLC entity corresponding to the RB. In other words, if the target cell to be switched to is an E-FACH cell, the DL RLC PDU size configured to be flexible size may be carried according to multiple multiplexing options in the mapping information, and the DL RLC PDU size is preferably set to flexible size. The DL RLC PDU size can also be set to fixed size. This is because the cell supporting E-FACH can support the DL RLC PDU size of the radio bearer configured to be fixed or flexible size, while the radio bearer DL RLC PDU size is flexible. The size of the radio bearer is better. If the target cell to be switched to is a legacy FACH cell, the DL RLC PDU size is legally matched only when the DL RLC PDU size is fixed. At this time, the UE may set the DL RLC PDU size to the fixed size according to the DL RLC PDU size configured as the fixed size in the multiple multiplexing options in the mapping information.

Optionally, as an embodiment of the present invention, the configuration message is used to set a default DL RLC PDU size of the UE to a fixed size fixed size, and the UE sets, according to the reconfiguration message, a DL RLC PDU size after the cell performs cell reselection, including The DL RLC PDU size currently carried by the UE is set to the fixed size according to the configuration message.

Specifically, the network device configures a default DL RLC PDU size for the UE by means of a broadcast message or other default configuration, in addition to the UE state transition or the cell reselection procedure, and the present invention includes but is not limited thereto. When the UE detects that the current DL RLC PDU size is invalid, for example, the target cell capability to which the handover is not supported, for example, the target cell is a legacy cell of the Legacy FACH, and the cell to which the UE belongs before the cell handover is an E-FACH cell, so configuration The downlink RLC PDU size of the flexible size will be invalid. In this case, the UE can communicate using the default downlink RLC PDU size (fixed size).

Optionally, as an embodiment of the present invention, the method includes: sending a trigger message to the network device, where the trigger message is used to instruct the network device to send a configuration message to the UE. Specifically, when the UE detects that the current downlink RLC PDU size in the target cell is invalid, for example, the target cell capability to which the handover is performed is not supported, for example, the target cell is a cell of the Legacy FACH, and the cell to which the UE belongs before the cell handover is E-FACH cell, therefore configured with flexible size DL RLC PDU size It will be invalid, and will trigger a cell update procedure, requesting the network device to reconfigure the legal DL RLC PDU size. It should be understood that the type of the configuration message sent by the UE to trigger the network device may be a legacy configuration message, or may be an embodiment of the present invention. The configuration messages listed in the present invention are not limited thereto.

In the embodiment of the present invention, the network device generates a configuration message, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to a fixed size, and the second candidate configuration is to use the DL. The RLC PDU size is set to a variable size. The configuration message is used to configure a legal DL RLC PDU size according to the configuration message after the cell reselection is performed, when the user equipment performs the state transition and the cell reselection. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

In the crossover procedure of the state transition of CELL_DCH to CELL_FACH and the handover from one E-FACH cell to the legacy FACH cell, since the existing protocol requires that the ongoing ongoing reconfiguration process needs to be performed, the Cell Update Confirm is sent to the UE in the target cell. The configuration information of the target cell cannot be carried in the message, and the DL RLC PDU size supported by the target cell cannot be carried. Therefore, since the original cell is an E-FACH cell, the Radio Bearer Reconfiguration sent by the network device is carried in the state transition process. The DL RLC PDU size is flexible size. However, for the target cell of the legacy FACH, the configuration is invalid for the target cell, and thus may cause a TRB reset of the UE, and even cause a call drop problem. Therefore, by carrying a fixed-size and variable-size DL RLC PDU size in the configuration message, the user equipment can select a legal DL RLC PDU size configuration, and the embodiment of the present invention can solve the abnormal call drop in the D2F and CU process cross scenarios. The problem is to improve the dropped call KPI.

FIG. 3 is a schematic flowchart of a method of wireless communication according to another embodiment of the present invention. As shown in FIG. 3, the method includes:

301. The network device sends, to the user equipment, a reconfigured Radio Bearer Reconfiguration message of the original cell radio bearer. Specifically, the RLC info of the radio bearer reconfiguration message carries a flexible size configuration that supports the E-FACH cell, and the mapping info of the reconfiguration message carries at least a fixed size configuration that supports the FACH cell. Further, the weight The mapping info of the configuration message can also carry a flexible size configuration that supports the E-FACH cell.

302. The user equipment sends a cell update Cell Update message to the network device, so as to be reselected into the target cell of the Legacy FACH.

303. The network device sends a cell reselection confirmation Cell Update Confirm message to the user equipment. The DL RLC PDU size configuration information of the target cell cannot be carried in the cell reselection acknowledgement message.

The user equipment sends a radio bearer reconfiguration complete message to the network device. Specifically, after receiving the configuration message, the user equipment receives the configuration message according to the cell capability, the current state, and the specific parameters in the configuration message. The information selects different multiplexing options multiplexing option.

When the UE migrates from the CELL_DCH to the CELL_FACH state, and the transport channel type corresponding to the selected multiplexing option is FACH, if the currently stored DL RLC PDU size (due to the downlink of the RLC info in the reconfiguration message received during the state transition) If the RLC PDU size is configured as a flexible size, the UE determines that the current RLC PDU size is an invalid configuration parameter, and the UE sets the RLC entity corresponding to the RB according to the DL RLC PDU size configured as the fixed size carried in the rb mapping info. Downstream RLC PDU size parameter.

Specifically, the foregoing process further includes the UE re-establishing a receiving end RLC entity corresponding to the radio bearer RB.

Specifically, if at least one multiplexing option of the mapping information in the reconfiguration message in step 301 carries only the DL RLC PDU size configured as the fixed size. Then, specifically, when the UE migrates from the CELL_DCH to the CELL_FACH state, and the transport channel type corresponding to the selected multiplexing option is FACH, if the currently stored DL RLC PDU size (for example, it may be the weight received during the state transition) If the size of the downlink RLC PDU size of the RLC info in the configuration message is configured to be flexible, the UE determines that the current RLC PDU size is an invalid configuration parameter, and the UE configures the DL RLC PDU size according to the fixed size in the rb mapping info. Set the downlink RLC PDU size parameter of the RLC entity corresponding to the RB.

Specifically, if at least one multiplexing option of the mapping information in the reconfiguration message in step 301 carries both the DL RLC PDU size configured as the fixed size and the DL RLC PDU size configured as the flexible size. Then, the UE receives the configuration message, directly ignores the configuration in the DL RLC PDU size in the RLC info, selects the multiplexing option according to the actual situation, and then configures the configuration based on the configuration information of the DL RLC PDU size in the selected multiplexing option. The downlink RLC PDU size parameter in the RLC entity corresponding to the RB. In other words, if the target cell to be switched to is a legacy FACH cell, the DL RLC PDU size can be set to a fixed size according to the DL RLC PDU size configured as the fixed size in the multiplexing option in the mapping information; When the target cell to be switched is an E-FACH cell, the configuration may be carried according to multiple multiplexing options in the mapping information. For the DL RLC PDU size of flexible size, set the DL RLC PDU size to flexible size.

In the embodiment of the present invention, the network device generates a configuration message, where the configuration message carries a downlink radio link control protocol data unit size DL RLC PDU size configured to be a fixed size and a DL RLC PDU size configured to be a variable size, where the configuration message is used. When the cell capability of the user equipment is inconsistent between the state transition and the cell reselection, the cell reselection is performed, and the legal DL RLC PDU size is configured according to the configuration message. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

In the crossover procedure of the state transition of CELL_DCH to CELL_FACH and the handover from one E-FACH cell to the legacy FACH cell, since the existing protocol requires that the ongoing ongoing reconfiguration process needs to be performed, the Cell Update Confirm is sent to the UE in the target cell. The configuration information of the target cell cannot be carried in the message, and the DL RLC PDU size supported by the target cell cannot be carried. Therefore, since the original cell is an E-FACH cell, the Radio Bearer Reconfiguration sent by the network device is carried in the state transition process. The DL RLC PDU size is flexible size. However, for the target cell of the legacy FACH, the configuration is invalid for the target cell, and thus may cause a TRB reset of the UE, and even cause a call drop problem. Therefore, by carrying a fixed-size and variable-size DL RLC PDU size in the configuration message, the user equipment can select a legal DL RLC PDU size configuration, and the embodiment of the present invention can solve the abnormal call drop in the D2F and CU process cross scenarios. The problem is to improve the dropped call KPI.

FIG. 4A is a schematic flowchart of a method for wireless communication according to another embodiment of the present invention. As shown in FIG. 4A, the method includes:

401. The network device sends a reconfigured Radio Bearer Reconfiguration message of the original cell radio bearer to the user equipment. Specifically, the RLC info of the radio bearer reconfiguration message carries a flexible size configuration supporting the E-FACH cell.

402. The user equipment sends a cell update Cell Update message to the network device, so as to be reselected into the target cell of the Legacy FACH.

403. The network device sends a cell reselection confirmation Cell Update Confirm message to the user equipment. The DL RLC PDU size configuration information of the target cell cannot be carried in the cell reselection confirmation message.

404. The user equipment sends a radio bearer reconfiguration complete message to the network device to complete the radio bearer reconfiguration complete message.

405. When the user equipment determines that the reconfiguration message is received during the state transition, RLC info The downlink RLC PDU size is configured as a flexible size, and then the current RLC PDU size is determined to be an invalid configuration parameter, and the cell update message is sent to the network device, where the cell update message is used to trigger the network device to send a reconfiguration message that is legal to the target cell.

406. The network device sends a Cell Update Confirm of the target cell to the user equipment, where the message carries the legal DL RLC PDU size, that is, the DL RLC PDU size is set to the fixed size.

In the embodiment of the present invention, the user equipment triggers the network device to re-select the legal DL RLC PDU size for the user equipment by sending a trigger message to the network device. Therefore, when the cell capability of the user equipment is inconsistent between the state transition and the cell reselection, the user equipment can perform a cell reselection and configure a legal DL RLC PDU size according to the configuration message. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

FIG. 4B is a schematic flowchart of a method for wireless communication according to another embodiment of the present invention. As shown in FIG. 4B, the method includes:

401. The network device sends a reconfigured Radio Bearer Reconfiguration message of the original cell radio bearer to the user equipment. Specifically, the RLC info of the radio bearer reconfiguration message carries a flexible size configuration supporting the E-FACH cell.

402. The user equipment sends a cell update Cell Update message to the network device, so as to be reselected into the target cell of the Legacy FACH.

403. The network device sends a cell reselection confirmation Cell Update Confirm message to the user equipment. The DL RLC PDU size configuration information of the target cell cannot be carried in the cell reselection confirmation message.

404. The user equipment sends a radio bearer reconfiguration failure message to the network device. Specifically, when the user equipment determines that the downlink RLC PDU size of the RLC info in the reconfiguration message received during the state transition is configured to be flexible, the current RLC PDU size is determined to be an invalid configuration parameter, that is, the network device needs to be legally requested. DL RLC PDU size. 405. The network device sends a reconfiguration Radio Bearer Reconfiguration message of the original cell radio bearer to the user equipment.

Specifically, since the newly selected cell supports only the FACH, the fixed size is configured in the DL RLC PDU size in the RLC info.

Specifically, after receiving the configuration message in step 405, the user equipment configures a legal parameter according to the cell capability, the current state, and specific parameters in the configuration message.

Specifically, the foregoing process further includes the UE re-establishing a receiving end RLC entity corresponding to the radio bearer.

406. The user equipment sends a reconfiguration complete message of the target cell radio bearer to the network device.

In the embodiment of the present invention, the user equipment triggers the network device to re-select the legal DL RLC PDU size for the user equipment by sending a trigger message to the network device. Therefore, when the cell capability of the user equipment is inconsistent between the state transition and the cell reselection, the user equipment can perform a cell reselection and configure a legal DL RLC PDU size according to the configuration message. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

In the crossover procedure of the state transition of CELL_DCH to CELL_FACH and the handover from one E-FACH cell to the legacy FACH cell, since the existing protocol requires that the ongoing ongoing reconfiguration process needs to be performed, the Cell Update Confirm is sent to the UE in the target cell. The configuration information of the target cell cannot be carried in the message, and the DL RLC PDU size supported by the target cell cannot be carried. Therefore, since the original cell is an E-FACH cell, the Radio Bearer Reconfiguration sent by the network device is carried in the state transition process. The DL RLC PDU size is flexible size. However, for the target cell of the legacy FACH, the configuration is invalid for the target cell, and thus may cause a TRB reset of the UE, and even cause a call drop problem. Therefore, by sending a trigger message to the network device, the triggering network device carries the DL RLC PDU size of the target cell in the configuration message (for example, when the target cell is a legacy FACH cell, the DL RLC PDU size carried is a fixed size), the user equipment The legal DL RLC PDU size configuration can be obtained. The embodiment of the present invention can solve the problem of abnormal call drop in the cross scenario of the D2F and CU processes, and improve the dropped call KPI.

1 to 4, the method of the embodiment of the present invention is discussed in detail. The network device and the user equipment of the embodiment of the present invention are introduced from the perspective of the device in conjunction with FIG. 4 to FIG.

FIG. 5 is a schematic block diagram of a network device for wireless communication according to an embodiment of the present invention. As shown in FIG. 5, the network device 500 includes:

a generating unit 510, configured to generate a configuration message, where the configuration message includes a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is a downlink radio link control protocol data unit size DL RLC PDU The size is set to a fixed size, and the second candidate configuration is to set the DL RLC PDU size to a variable size.

The sending unit 520 is configured to send the foregoing configuration message to the user equipment UE.

In the embodiment of the present invention, the network device generates a configuration message, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to be solid. The second candidate configuration is to set the DL RLC PDU size to a variable size, and the configuration message is used to perform cell reselection according to the configuration when the cell capabilities of the user equipment are in a state transition and the cell reselection crossover process are inconsistent. The message is configured with a valid DL RLC PDU size. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

Optionally, as an embodiment of the present invention, the configuration message includes a mapping information field of the radio bearer, and the DL RLC PDU size of the first multiplexing option field in the at least one multiplexing option field of the mapping information field is set to a fixed size. .

Optionally, as an embodiment of the present invention, the DL RLC PDU size in the second multiplexing option field in the at least one multiplexing option field may be set to one of a fixed size and a variable size.

Optionally, as an embodiment of the present invention, the configuration message includes downlink radio link control protocol information, where the downlink radio link control protocol information includes a DL RLC PDU size configured to be a variable size.

Optionally, as an embodiment of the present invention, the determining unit 520 is configured to: when the UE migrates from the first link state to the second link state, send the reconfiguration message to the UE, where the first link state includes Cell dedicated channel CELL_DCH state; the second link state includes at least one of the following: a cell forward access channel CELL_FACH state, a cell paging channel CELL_PCH state, and a registered area paging channel URA_PCH state.

It should be understood that the network device 500 according to an embodiment of the present invention may correspond to an execution body of a method for wireless communication of an embodiment of the present invention, and the above and other operations and/or functions of respective modules in the network device 500 are respectively implemented The respective processes in FIGS. 1 to 2 and the corresponding processes of the respective methods in FIGS. 3 to 4 are not described herein again for the sake of brevity.

In the embodiment of the present invention, the network device generates a configuration message, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to a fixed size, and the second candidate configuration is to use the DL. The RLC PDU size is set to a variable size. The configuration message is used to configure a legal DL RLC PDU size according to the configuration message after the cell reselection is performed, when the user equipment performs the state transition and the cell reselection. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

FIG. 6 is a schematic block diagram of a user equipment for wireless communication according to another embodiment of the present invention. Figure 6 As shown, the user device 600 includes:

The receiving unit 610 is configured to receive a configuration message sent by the network device, where the configuration message includes a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is a downlink radio link control protocol The data unit size DL RLC PDU size is set to a fixed size, and the second candidate configuration is to set the DL RLC PDU size to a variable size.

The determining unit 620 is configured to determine, according to the configuration message and the cell capability of the target cell after the cell reselection, that the fixed size DL RLC PDU size or the variable size DL RLC PDU size is used when communicating with the target cell.

In the embodiment of the present invention, the network device generates a configuration message, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to a fixed size, and the second candidate configuration is to use the DL. The RLC PDU size is set to a variable size. The configuration message is used to configure a legal DL RLC PDU size according to the configuration message after the cell reselection is performed, when the user equipment performs the state transition and the cell reselection. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

Optionally, as an embodiment of the present invention, the configuration message includes a mapping information field of a radio bearer, and a DL RLC PDU size of the first multiplexing option field in the at least one multiplexing option field of the mapping information field is set to be fixed. size.

Optionally, as an embodiment of the present invention, the DL RLC PDU size in the second multiplexing option field of the at least one multiplexing option may be set to one of a fixed size and a variable size.

Optionally, as an embodiment of the present invention, the determining unit 620 is further configured to: determine that a handover from a first link state to a second link state is required, where the first link state includes a cell dedicated channel CELL_DCH state. The second link state includes at least one of a cell forward access channel CELL_FACH state, a cell paging channel CELL_PCH state, and a registration zone paging channel URA_PCH state.

Optionally, as an embodiment of the present invention, the determining unit 620 is specifically configured to: when the UE needs to switch from an original cell supporting an enhanced forward access channel E-FACH state to the target cell not supporting an E-FACH state. And setting, according to the DL RLC PDU size in the at least one multiplexing option field, the DL RLC PDU size of the RLC entity corresponding to the radio bearer is a fixed size.

It should be understood that the user equipment 600 according to an embodiment of the present invention may correspond to an execution body of a method for wireless communication of an embodiment of the present invention, and the above-described respective modules of the user equipment 600 and The operations and/or functions are respectively implemented in order to implement the respective methods in FIG. 1 to FIG. 2 and the corresponding processes in the respective methods in FIG. 3 to FIG. 4, and are not described herein again for brevity.

In the embodiment of the present invention, the network device generates a configuration message, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to a fixed size, and the second candidate configuration is to use the DL. The RLC PDU size is set to a variable size. The configuration message is used to configure a legal DL RLC PDU size according to the configuration message after the cell reselection is performed, when the user equipment performs the state transition and the cell reselection. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

FIG. 7 is a schematic block diagram of a network device for wireless communication according to another embodiment of the present invention. As shown in FIG. 7, an embodiment of the present invention further provides a network device 700, which includes a processor 701, a memory 702, a bus system 703, a receiver 704, and a transmitter 705. The processor 701, the memory 702 and the receiver 704 are connected by a bus system 703 for storing instructions for executing instructions stored in the memory 702 and controlling the receiver 704 to receive information. The processor 701 is configured to: generate a configuration message, where the configuration message includes a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is a downlink radio link control protocol data unit size DL RLC PDU The size is set to a fixed size, and the second candidate configuration is to set the DL RLC PDU size to a variable size; the transmitter 705 is configured to: send the configuration message to the user equipment UE.

Based on the foregoing technical solution, in the embodiment of the present invention, the network device 700 generates a configuration message, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to a fixed size, The second candidate is configured to set the DL RLC PDU size to a variable size. The configuration message is configured to perform legal reselection according to the configuration message after performing cell reselection in the process of performing state transition and cell reselection in the user equipment. DL RLC PDU size. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

It should be understood that, in the embodiment of the present invention, the processor 701 may be a central processing unit ("CPU"), and the processor 701 may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The memory 702 can include read only memory and random access memory and provides instructions and data to the processor 701. A portion of the memory 702 can also include a non-volatile random access memory. For example, the memory 702 can also store information of the device type.

The bus system 703 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 703 in the figure.

In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 701 or an instruction in a form of software. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702 and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.

Optionally, as an embodiment of the present invention, the configuration message includes a mapping information field of a radio bearer, and a DL RLC PDU size of the first multiplexing option field in the at least one multiplexing option field of the mapping information field is set to be fixed. size.

Optionally, as an embodiment of the present invention, the DL RLC PDU size in the second multiplexing option field in the second multiplexing option field in the at least one multiplexing option may be set to be in a fixed size and a variable size. One.

Optionally, as an embodiment of the present invention, the configuration message includes downlink radio link control protocol information, and the DL RLC PDU size of the radio bearer in the downlink radio link control protocol information is set to a variable size.

Optionally, as an embodiment of the present invention, the transmitter 705 is further configured to: when the UE migrates from the first link state to the second link state, send the reconfiguration message to the UE, where the first chain The path state includes a cell dedicated channel CELL_DCH state; the second link state includes at least one of a cell forward access channel CELL_FACH state, a cell paging channel CELL_PCH state, and a registered area paging channel URA_PCH state.

Based on the foregoing technical solution, in the embodiment of the present invention, the network device 700 generates a configuration message, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to a fixed size, The second candidate configuration is to set the DL RLC PDU size to a variable size, and the configuration message is used to perform state transition and cell reselection on the user equipment. When the cell capacity in the process is inconsistent, the cell reselection is performed, and the legal DL RLC PDU size is configured according to the configuration message. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

FIG. 8 is a schematic diagram of a user equipment for wireless communication according to another embodiment of the present invention. As shown in FIG. 8, an embodiment of the present invention further provides a user equipment 800, which includes a processor 801, a memory 802, a bus system 803, a receiver 804, and a transmitter 805. The processor 801, the memory 802 and the receiver 804 are connected by a bus system 803 for storing instructions for executing instructions stored by the memory 802 and controlling the receiver 804 to receive information. The receiver 804 is configured to: receive a configuration message sent by the network device, where the configuration message includes a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is a downlink radio link control protocol The data unit size DL RLC PDU size is set to a fixed size, and the second candidate configuration is to set the DL RLC PDU size to a variable size; the processor 801 is configured to: according to the configuration message and the target cell after cell reselection The cell capability determines to use a fixed size DL RLC PDU size or a variable size DL RLC PDU size when communicating with the target cell.

Based on the foregoing technical solution, the user equipment 800 of the embodiment of the present invention generates a configuration message by the receiving network device, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to The second candidate configuration is to set the DL RLC PDU size to a variable size. The configuration message is used to perform cell reselection according to the configuration when the cell capabilities of the user equipment are in the state transition and the cell reselection crossover process are inconsistent. The message is configured with a valid DL RLC PDU size. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

It should be understood that, in the embodiment of the present invention, the processor 801 may be a central processing unit ("CPU"), and the processor 801 may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The memory 802 can include read only memory and random access memory and provides instructions and data to the processor 1001. A portion of the memory 802 may also include a non-volatile random access memory. For example, the memory 802 can also store information of the device type.

The bus system 803 may include a power bus and a control bus in addition to the data bus. And status signal bus, etc. However, for clarity of description, various buses are labeled as bus system 803 in the figure.

In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 801 or an instruction in a form of software. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in memory 802, and processor 801 reads the information in memory 802 and, in conjunction with its hardware, performs the steps of the above method. To avoid repetition, it will not be described in detail here.

Optionally, as an embodiment of the present invention, the configuration message includes: a mapping information field of the radio bearer, and a DL RLC PDU size of a first multiplexing option field in at least one multiplexing option field of the mapping information field. Set to a fixed size.

Optionally, as an embodiment of the present invention, the DL RLC PDU size in the second multiplexing option field in the at least one multiplexing option field may be set to one of a fixed size and a variable size.

Optionally, as an embodiment of the present invention, the processor 801 is further configured to: determine that the user equipment 800 needs to be switched from a first link state to a second link state, where the first link state includes a cell dedicated channel CELL_DCH State; the second link state includes at least one of a cell forward access channel CELL_FACH state, a cell paging channel CELL_PCH state, and a registration zone paging channel URA_PCH state.

Optionally, as an embodiment of the present invention, the processor 801 is further configured to: when the UE needs to switch from an original cell supporting an enhanced forward access channel E-FACH state to not supporting an E-FACH state. And setting, by the DL RLC PDU size in the at least one multiplexing option field, the DL RLC PDU size of the RLC entity corresponding to the radio bearer to be a fixed size.

Based on the foregoing technical solution, the user equipment 800 of the embodiment of the present invention generates a configuration message by the receiving network device, where the configuration message carries a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to set the DL RLC PDU size to The second candidate configuration is to set the DL RLC PDU size to a variable size. The configuration message is used to perform cell reselection according to the configuration when the cell capabilities of the user equipment are in the state transition and the cell reselection crossover process are inconsistent. The message is configured with a valid DL RLC PDU size. Therefore, the embodiment of the present invention provides a method for configuring a legal DL RLC PDU size in a state transition and a cell reselection cross process of a user equipment.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, for clarity of hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. Including a number of instructions to make a computer device (can be a personal computing The machine, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent person can be easily conceived within the technical scope of the present invention by any person skilled in the art. Modifications or substitutions are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims (20)

A method of wireless communication, comprising: Generating a configuration message, where the configuration message includes a first candidate configuration and a second candidate configuration of the radio bearer, wherein the first candidate configuration is to set a downlink radio link control protocol data unit size DL RLC PDU size to a fixed size, The second candidate configuration is to set the DL RLC PDU size to a variable size; The configuration message is sent to the user equipment UE. The method according to claim 1, wherein the configuration message includes a mapping information field of the radio bearer, and a DL of a first multiplexing option field in at least one multiplexing option field of the mapping information field The RLC PDU size is set to a fixed size. The method according to claim 1 or 2, wherein the DL RLC PDU size in the third multiplexing option field in the at least one multiplexing option field is set to one of a fixed size and a variable size. The method according to any one of claims 1 to 3, wherein the configuration message includes downlink radio link control protocol information, and the radio bearer DL RLC in the downlink radio link control protocol information The PDU size is set to a variable size. The method according to any one of claims 1 to 4, wherein the reconfiguration message is sent to the UE when the UE migrates from a first link state to a second link state, wherein The first link state includes a cell dedicated channel CELL_DCH state; the second link state includes at least one of a cell forward access channel CELL_FACH state, a cell paging channel CELL_PCH state, and a registration area Call the channel URA_PCH status. A method of wireless communication, comprising: The user equipment UE receives a configuration message sent by the network device, where the configuration message includes a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is a downlink radio link control protocol data unit size DL RLC The PDU size is set to a fixed size, and the second candidate configuration is to set the DL RLC PDU size to a variable size; the UE determines the target according to the configuration message and the cell capability of the target cell after cell reselection. The cell uses a fixed-size DL RLC PDU size or a variable-size DL RLC PDU size for communication. The method according to claim 6, wherein the configuration message includes a mapping information field of the radio bearer, and a DL of a first multiplexing option field in at least one multiplexing option field of the mapping information field The RLC PDU size is set to a fixed size. The method according to claim 6 or 7, wherein the DL RLC PDU size in the third multiplexing option field in the at least one multiplexing option field is set to one of a fixed size and a variable size. The method according to any one of claims 6 to 8, wherein when the UE migrates from a first link state to a second link state, receiving a reconfiguration message sent by the network device, where The first link state includes a cell dedicated channel CELL_DCH state; the second link state includes at least one of a cell forward access channel CELL_FACH state, a cell paging channel CELL_PCH state, and a registration area Call the channel URA_PCH status. The method according to claim 9, wherein the UE determines to use a fixed-size DL RLC PDU size when communicating with the target cell according to the configuration message and the cell capability of the target cell after cell reselection. Or variable size DL RLC PDU size, including: When the UE needs to switch from the original cell supporting the enhanced forward access channel E-FACH state to the target cell not supporting the E-FACH state, according to the DL RLC PDU size in the at least one multiplexing option field The DL RLC PDU size of the RLC entity corresponding to the radio bearer is set to a fixed size. A network device, comprising: a generating unit, where the generating unit is configured to generate a configuration message, where the configuration message includes a first candidate configuration and a second candidate configuration of a radio bearer, where the first candidate configuration is a downlink radio link control protocol data unit size The DL RLC PDU size is set to a fixed size, the second candidate configuration is to set the DL RLC PDU size to a variable size, and the sending unit is configured to send the configuration message to the user equipment UE. The network device according to claim 11, wherein the configuration message includes a mapping information field of the radio bearer, and a first multiplexing option field in at least one multiplexing option field of the mapping information field The DL RLC PDU size is set to a fixed size. The network device according to any one of claims 11 or 12, wherein a DL RLC PDU size in a third multiplexing option field in the at least one multiplexing option field is set to a fixed size and a variable One of the sizes. The network device according to any one of claims 11 to 13, wherein the configuration message includes downlink radio link control protocol information, and the radio bearer DL in the downlink radio link control protocol information The RLC PDU size is set to a variable size. A network device according to any one of claims 11 to 14, wherein Transmitting the reconfiguration message to the UE when the UE migrates from the first link state to the second link state, where the first link state includes a cell dedicated channel CELL_DCH state; the second chain The path state includes at least one of the following states: a cell forward access channel CELL_FACH state, a cell paging channel CELL_PCH state, and a registration area paging channel URA_PCH state. A user equipment, comprising: a receiving unit, configured to receive a configuration message sent by the network device, where the configuration message includes a first candidate configuration and a second candidate configuration of the radio bearer, where the first candidate configuration is to control the downlink radio link The protocol data unit size DL RLC PDU size is set to a fixed size, and the second candidate configuration is to set the DL RLC PDU size to a variable size; a determining unit, configured to determine, according to the configuration message and the cell capability of the target cell after cell reselection, a fixed-size DL RLC PDU size or a variable-size DL RLC when communicating with the target cell PDU size. The user equipment according to claim 16, wherein the configuration message includes a mapping information field of the radio bearer, and a first multiplexing option field in at least one multiplexing option field of the mapping information field The DL RLC PDU size is set to a fixed size. The user equipment according to claim 16 or 17, wherein the DL RLC PDU size in the third multiplexing option field in the at least one multiplexing option field is set to one of a fixed size and a variable size . The user equipment according to any one of claims 16 or 18, wherein the determining unit is further configured to: Determining that a transition from a first link state to a second link state is required, wherein the first link state comprises a cell dedicated channel CELL_DCH state; the second link state comprises at least one of: a cell before The access channel CELL_FACH state, the cell paging channel CELL_PCH state, and the registration area paging channel URA_PCH state. The user equipment according to claim 19, wherein the determining unit is specifically configured to: When the UE needs to switch from the original cell supporting the enhanced forward access channel E-FACH state to the target cell not supporting the E-FACH state, according to the DL RLC PDU size in the at least one multiplexing option field The DL RLC PDU size of the RLC entity corresponding to the radio bearer is set to a fixed size.

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