CN111866948B - Communication method, base station, user equipment and device with storage function - Google Patents
Communication method, base station, user equipment and device with storage function Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0205—Traffic management, e.g. flow control or congestion control at the air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0284—Traffic management, e.g. flow control or congestion control detecting congestion or overload during communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1215—Wireless traffic scheduling for collaboration of different radio technologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/02—Data link layer protocols
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Abstract
The application discloses a communication method, a base station, user equipment and a device with a storage function, wherein the method comprises the following steps: the base station detects an uplink communication mode to be performed by the user equipment and confirms whether the uplink communication mode supports a packet data convergence protocol packet copying function or not; if the uplink communication mode supports the packet data convergence protocol packet copying function, an activation/deactivation instruction is sent to the user equipment, so that the user equipment enables/disables the packet data convergence protocol packet copying function during uplink communication. By the method, the reliability of communication transmission can be enhanced.
Description
The application relates to a communication method, a base station, user equipment and a device with a storage function, which are classified applications of an application patent application with the application number of 201710312051.1 and the application date of 2017, 05 and 05.
Technical Field
The present application relates to the field of communications, and in particular, to a communication method, a base station, a user equipment, and a device with a storage function.
Background
With the development of a 5G NR (New Radio) network, a situation in which a 4G LTE (Long Term Evolution ) network and a 5G NR network are simultaneously connected to a UE (User Equipment) will occur. The RAN2# NR ad hoc conference agrees with a "split SRB (Signalling radio bearer, signaling radio bearer)" structure, and it is proposed that an RRC (Radio Resource Control, radio resource control protocol) message may be sent through one or both of LTE or NR communication modes, which may increase reliability of transmission and reduce signal delay.
DL (Downlink) refers to a transmission channel from a base station to a UE, and UL (Uplink) refers to a transmission channel from a UE to a base station. The inventor of the present application has found in long-term research and development that when DL adopts a split SRB structure, a base station can select a communication mode by itself, and when UL adopts a split SRB structure, UE cannot independently complete the selection of the communication mode.
Disclosure of Invention
The technical problem mainly solved by the embodiment of the application is to provide a communication method, a base station, user equipment and a device with a storage function, which can solve the problem of starting a packet data convergence protocol layer packet copy function in UL communication.
In order to solve the technical problems, the application adopts a technical scheme that: a method of communication, comprising: the base station detects an uplink communication mode to be performed by the user equipment and confirms whether the uplink communication mode supports a packet data convergence protocol packet copying function or not; if the uplink communication mode supports the packet data convergence protocol packet copying function, an activation instruction is sent to the user equipment, so that the user equipment adopts the packet data convergence protocol packet copying function in the uplink communication.
In order to solve the technical problems, the application adopts another technical scheme that: a method of communication, comprising: the user equipment receives an activation/deactivation instruction from the base station, wherein the activation/deactivation instruction is sent by the base station based on the fact that the base station supports a packet data convergence protocol packet copying function in an uplink communication mode to be performed by the user equipment; the user equipment enables a packet data convergence protocol packet copying function in uplink communication.
In order to solve the technical problems, the application adopts another technical scheme that: a base station comprising a third processing circuit and a third communication circuit electrically coupled to each other, the third processing circuit executing instructions in operation to implement a method as described above.
In order to solve the technical problems, the application adopts another technical scheme that: a user equipment comprising a fourth processing circuit and a fourth communication circuit electrically coupled to each other, the fourth processing circuit executing instructions in operation to implement a method as described above.
The beneficial effects of the application are as follows: different from the situation in the prior art, the embodiment of the application sends the activation instruction to the UE under the condition that the UL communication supports the packet data convergence protocol layer packet replication function, so that the UE enables the packet data convergence protocol layer packet replication function in the UL communication, and the reliability of communication transmission is enhanced.
Drawings
FIG. 1 is a flow chart of a first embodiment of the communication method of the present application;
fig. 2 is a schematic diagram of a PDU (Protocol Data Unit ) structure;
FIG. 3 is a schematic diagram of a PDU structure carrying an instruction for selecting a communication mode according to a first embodiment of the communication method of the present application;
FIG. 4 is a schematic diagram of a first reference table written with selection instructions according to an embodiment of the communication method of the present application;
FIG. 5 is a schematic diagram of a second reference table written in a selection instruction according to an embodiment of the communication method of the present application;
FIG. 6 is a flow chart of a second embodiment of the communication method of the present application;
fig. 7 is a schematic structural diagram of a first embodiment of a base station of the present application;
fig. 8 is a schematic structural diagram of a first embodiment of the user equipment of the present application;
FIG. 9 is a flow chart of a third embodiment of the communication method of the present application;
FIG. 10 is a diagram showing a PDU structure carrying an activation instruction according to a third embodiment of the communication method of the present application
FIG. 11 is a flow chart of a fourth embodiment of the communication method of the present application;
fig. 12 is a schematic structural diagram of a second embodiment of a base station of the present application;
fig. 13 is a schematic structural diagram of a second embodiment of the user equipment of the present application;
FIG. 14 is a diagram illustrating a protocol stack corresponding to a packet duplication function of the PDCP layer;
fig. 15 is a schematic structural view of an embodiment of the device with memory function of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.
Referring to fig. 1, fig. 1 is a schematic flow chart of a first embodiment of the communication method of the present application, wherein the flow chart of the first embodiment of the communication method includes the following steps:
step 101: the base station evaluates the transmission quality of at least two communication modes which can be selected for use by the user equipment so as to select at least one communication mode;
in one embodiment, the base stations include an eNB (4G base station) and a gNB (5G base station), and in this embodiment, a split SRB structure is adopted when the UE performs uplink transmission. The base stations communicate wirelessly with each other, and the two base stations evaluate parameters such as signal strength, transmission speed, transmission signaling reliability and the like of the connection with each other and the UE. In one application scenario, two base stations eNB and gNB designate an eNB as a master base station, and the master base station selects one or two communication methods of LTE and NR as a UL communication method according to the evaluation result.
Step 102: transmitting the selected at least one communication mode to the user equipment so that the user equipment performs uplink communication by using the selected at least one communication mode;
specifically, the eNB, as the master base station, will generate an instruction to the UE according to the result of the selection, for example, select LTE as the communication scheme. In one application scenario, the selection instruction is carried in an RRC message for transmission. Since the RRC message is transmitted with a large consumption, it is not transmitted frequently, and the selection of the communication scheme is determined based on the quality of the connection communication between the two base stations and the UE, which is time-efficient, so that the effective time of the message needs to be limited. Thus, the RCC message carries, in addition to the selection instruction, the validity time for selecting this communication mode. Generally, a timing device is built in the UE, after the UE receives an RCC message carrying an instruction for selecting a communication mode, the UE reads the effective time in the RCC message, starts a built-in timing function when the RCC message carries the selection instruction, starts counting down to the limit of the read effective time, and after the counting time is finished, the UE does not use the selected communication mode any more, but uses a communication mode with a default priority in the UE setting, for example, NR.
In another application scenario, the instruction to select the communication mode is carried in a PDU (Protocol Data Unit ) in the PDCP (Packet Data Convergence Protocol, packet data convergence protocol) layer. Referring to fig. 2 in combination, fig. 2 is a schematic diagram of a PDU (Protocol Data Unit ) structure. The D/C field of the PDC is used to indicate whether the PDC is a control PDU (C) or a data PDU (D), either of which can be used to carry instructions to select a communication mode. R denotes a reserved field, and there are four reserved fields in the header of a general PDU, two of which fields 11, 12 are used by the present application to carry instructions for selecting a communication mode. As shown in fig. 3, fig. 3 is a schematic PDU structure diagram of writing two fields 11 and 12 with an instruction for selecting a communication mode. 11. The original R (reserved field) is changed to S (select instruction) after an instruction for selecting a communication scheme is written.
Because the head of the PDU originally has idle reserved fields, the addition of an instruction for selecting a communication mode in the fields does not affect the data originally transmitted by the PDU and the reliability of transmission, thereby saving resources. The transmission of the PDU consumes less resources than the transmission of the RCC, and the transmission frequency of the PDU is more frequent than the RCC, so that the instruction for selecting the communication mode can be carried by the PDU in the PCDP and the timing can be performed without carrying the effective time of the instruction.
The instruction for selecting the communication mode is carried in the PDU in the PDCP layer, the PDCP layer belongs to the data link layer and is positioned at the upper layer of the RRC layer belonging to the network upper layer, after the UE receives the PDU carrying the instruction for selecting the communication mode, the PDCP layer and the RRC layer can communicate, and the RRC layer can read the instruction for selecting the communication mode, so that the UE can carry out UL communication according to the communication mode selected by the base station.
In yet another application scenario, the instruction for selecting a communication mode is carried in a MAC CE (Control Element) of a MAC (Media Access Control, medium access Control) layer. Since the MAC CE transmits less resources than the RRC, and the frequency of transmission is more frequent than the RRC, when the MAC CE is used to carry the command for selecting the communication scheme, the validity period of the command need not be limited.
The command for selecting the communication mode is carried in the MAC CE in the MAC layer, the MAC layer belongs to the data link layer and is positioned at the upper layer of the RRC layer belonging to the network upper layer, after the UE receives the MAC CE carrying the command for selecting the communication mode, the MAC layer and the RRC layer can communicate, and the RRC layer can read the command for selecting the communication mode, so that the UE can carry out UL communication according to the communication mode selected by the base station.
As can be seen from the above description, in the embodiment of the present application, the instruction for selecting the communication mode is carried by using the PDU and the MAC CE in the RCC or PDCP, and the instruction is transmitted to the UE through DL communication, so as to help the UE select an appropriate communication mode to perform UL communication adopting the split SRB structure, so that the method is simple and feasible, and resources are not wasted.
Referring to fig. 4 and 5 in combination, fig. 4 is a first reference table written by the selection instruction of the present application, and fig. 5 is a second reference table written by the selection instruction of the present application. In the prior art, there are three options for the communication mode: LTE, NR, both. Therefore, a space of 2 bits is required in binary to represent the selected communication mode, e.g., 00 (LTE), 01 (NR), 10 (Both). The embodiment of the application provides a new method for representing a selected communication mode, and only 1bit of transmission resource is needed.
In fig. 4, L represents LTE, N represents NR, and B represents Both, and are set in the UE in a certain order, and if one letter represents the current communication mode, letters (front and rear letters) on two sides adjacent to the letter are optional communication modes. For example, the current communication scheme is NR, and the selected communication scheme is LTE, the current selected position is one bit backward, and in this embodiment, one bit backward is represented by "0", so the content of the transmission instruction is "0"; if the current communication scheme is NR and the selected communication scheme is Both, the current position advances by one bit, and in this embodiment, the advancing by one bit is indicated by "1", so the content of the transmitted instruction is "1".
Similarly, if the current communication mode is LTE and the selected communication mode is Both, the content of the transmitted instruction is "0", and if the selected communication mode is NR, the content of the transmitted instruction is "1"; if the current communication scheme is Both and the selected communication scheme is NR, the content of the transmitted command is "0", and if the selected communication scheme is LTE, the content of the transmitted command is "1". The details may be referred to in fig. 5. When the selected communication mode is the same as the current communication mode, no instruction is sent, and the UE can maintain the current communication mode to perform UL communication.
In other embodiments, the ordering of L, N, B is not necessarily consistent with fig. 4, nor is the meaning represented by "0" and "1" necessarily consistent with fig. 5.
In this embodiment, the base station may arrange the communication modes selectable by the UE into a sequence as shown in fig. 4, and send the sequence to the UE during downlink communication, where the UE receives and stores the sequence, and when receiving a selection instruction sent by the base station, selects an UL communication mode according to the current communication mode in the stored sequence and the location direction indicated by the selection instruction. In other embodiments, the operation of arranging the sequences of the communication modes may be set in advance by the UE and notified to the base station, or the sequences of the unified communication modes may be set in the base station and the UE.
In other embodiments, the base station and the UE do not have to sort the three communication modes LTE, NR, both, but only need to establish a table similar to fig. 5, and when a certain communication mode is defined in the table as the current communication mode, the instruction content that needs to be sent by the other two communication modes is selected.
As can be seen from the above description, in the embodiment of the present application, the instruction sent to the UE is edited by comparing the positional relationship (forward or backward) between the selected communication mode and the current communication mode in the table sequence, and in some cases, the selected communication mode can be expressed by only requiring 1bit of transmission resource. The space of the instruction can be saved, and the resource is saved.
Referring to fig. 6, fig. 6 is a flow chart of a second embodiment of the communication method of the present application, which includes the following steps:
step 601: the method comprises the steps that user equipment receives a communication mode selection instruction from a base station, wherein the communication mode selection instruction carries at least one communication mode selected by the base station by evaluating transmission quality of at least two communication modes which can be selected by the user equipment;
referring to fig. 1 in combination, the communication manner is that the transmission quality of the base stations of other communication manners to which the UE can selectively connect by the master base station is compared with each other, thereby obtaining the UE. The selection instruction is compiled by the master base station and carried by the RCC message, PDU of PDCP, MAC CE or other message to facilitate the reception of the UE.
Step 602: performing uplink communication by using the selected at least one communication mode;
specifically, after receiving the RCC message, PDU of PDCP, MAC CE or other message carrying the selection instruction, the UE reads the content of the selection instruction from these messages, for example, the RCC layer PDCP layer or the MAC layer communicates to obtain the instruction for UL communication mode. After the UE reads the instruction, the UE selects a communication mode according to the content of the instruction to perform UL communication.
As can be seen from the above description, in the second embodiment of the communication method of the present application, the UE receives the instruction of the communication mode selected by the base station through evaluation, and selects the communication mode to perform UL communication according to the instruction, which can dynamically adjust the UL communication mode, is conducive to reasonable allocation of communication resources, and can read the instruction content carried in other messages, thereby saving transmission space and avoiding resource waste.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of a base station of the present application, and the base station 70 includes a first processing circuit 71 and a first communication circuit 72. The first communication circuit 72 is for communicating with communication circuits of other base stations, and for knowing the communication quality of each other, and for evaluating the communication quality of each other by the operation of the first processing circuit 71, a suitable communication scheme is selected. The first processing circuit 71 composes an instruction according to the selected communication scheme, and carries the instruction in an RCC message, a PDU of PDCP, or a MAC CE, and the first communication circuit 72 transmits the message carrying the instruction of the selected communication scheme to the UE.
As can be seen from the above description, in the first embodiment of the base station of the present application, the first communication circuit receives the communication signals of other base stations, obtains a suitable UL communication mode through the operation of the first processing circuit, edits the communication mode into an instruction, carries the instruction in other messages, and sends the instruction to the UE through the first communication circuit, so that the communication resources can be allocated reasonably, and other communication spaces are not occupied.
Referring to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of the ue according to the present application. The user equipment 80 comprises a second processing circuit 81 and a second communication circuit 82. The second communication circuit 82 is arranged to receive a message from the base station carrying an instruction to select a communication mode. The second processing circuit 81 is configured to read an instruction for selecting a communication scheme from the message received by the second communication circuit 82, and perform UL communication according to the communication scheme selected by the instruction.
As can be seen from the above description, in the first embodiment of the user equipment of the present application, the second communication circuit receives the message carrying the instruction for selecting the communication mode, and the second processing circuit reads the instruction and controls the UE to perform UL communication according to the instruction by using the selected communication mode, so that dynamic adjustment of the communication mode is facilitated, reasonable allocation of communication resources is facilitated, and the instruction carried in other messages is read, so that resources consumed for transmitting the instruction can be effectively saved.
Referring to fig. 9, fig. 9 is a flowchart of a communication method according to a third embodiment of the present application. A third embodiment of the communication method of the present application comprises the steps of:
step 901: the base station detects an uplink communication mode to be performed by the user equipment and confirms whether the uplink communication mode supports a packet data convergence protocol layer packet copying function or not;
specifically, in the NR communication mode, the UE supports the packet data convergence protocol layer packet copy function. Therefore, the base station needs to detect the UL communication mode which is about to be performed by the UE, and if the UL communication mode which is about to be performed by the UE is LTE or other communication modes which do not support the packet data convergence protocol layer packet replication function, an activation instruction is not sent to the UE, so as to avoid wasting resources;
step 902: if the uplink communication mode supports the packet data convergence protocol packet copying function, sending an activation/deactivation instruction to the user equipment so that the user equipment can start/stop the packet data convergence protocol packet copying function during uplink communication;
specifically, if the UL communication mode that the UE is about to perform is NR, this means that the packet data convergence protocol layer packet duplication function can be activated in the UL communication mode that the UE is about to perform, and the base station needs to determine whether the packet data convergence protocol layer packet duplication function needs to be activated in the UL communication that the UE is about to perform, and if so, the base station issues an activation instruction to the UE, and if not, issues a deactivation instruction.
In one application scenario, the activation instruction is carried in a PDU (Protocol Data Unit ) in the PDCP (Packet Data Convergence Protocol, packet data convergence protocol) layer. Referring to fig. 2 in combination, fig. 2 is a schematic diagram of a PDU (Protocol Data Unit ) structure. The D/C field of the PDC is used to indicate whether the PDC is a control PDU (C) or a data PDU (D). R denotes a reserved field, and there are four reserved fields in the header of a general PDU, two of which fields 11, 12 are used by the present application to carry instructions for selecting a communication mode. As shown in fig. 10, fig. 10 is a schematic PDU structure diagram in which two fields 11 and 12 are written with an instruction for selecting a communication mode. 11. 12 is originally that R (reserved field) becomes a (activate instruction) after an instruction for selecting a communication scheme is written. In other embodiments, not necessarily two fields are changed, but one, three, or four fields are also possible.
Because the head of the PDU originally has idle reserved fields, the addition of an instruction for selecting a communication mode in the fields does not affect the data originally transmitted by the PDU and the reliability of transmission, thereby saving resources. The transmission of the PDU consumes less resources than the transmission of the RCC, and the transmission frequency of the PDU is more frequent than the RCC, so that the instruction for selecting the communication mode can be carried by the PDU in the PCDP and the timing can be performed without carrying the effective time of the instruction.
After receiving the PDU containing the activation instruction, the UE reads the activation instruction in the PDU, and enables the packet data convergence protocol layer packet copy function when performing UL communication.
The method of sending the deactivation command is identical to the method of sending the activation command, except that the command content is different, and therefore, the details are not repeated here. After receiving the PDU containing the deactivation instruction, the UE reads the deactivation instruction and deactivates the packet data convergence protocol layer packet copying function when performing UL communication.
As can be seen from the above description, the present application can effectively save resources by carrying the activation instruction for enabling the packet data convergence protocol layer packet copy function in the header of the PDU, and the enabling the packet data convergence protocol layer packet copy function can increase the reliability of communication transmission.
Referring to fig. 11, fig. 11 is a flow chart of a fourth embodiment of the communication method of the present application, which includes the following steps:
step 1101: the user equipment receives an activation/deactivation instruction from a base station, wherein the activation/deactivation instruction is sent by the base station based on the fact that the uplink communication mode to be carried out by the user equipment is detected to support a packet data convergence protocol layer packet copying function;
referring to fig. 9 in combination, since the UE cannot independently enable the packet data convergence protocol layer packet duplication function in UL communication and the packet data convergence protocol layer packet duplication function is currently only supported in the NR communication mode, the base station first needs to detect whether UL communication that the UE is about to perform selects the NR communication mode, and if so, the base station issues an activation instruction for the packet data convergence protocol layer packet duplication function. The activation instruction may be carried by a data PDU of the PDCP, stored in a header of the PDU.
Step 1102: the user equipment enables/disables a packet data convergence protocol layer packet copy function in uplink communications.
In one application scenario, after receiving the PDU carrying the activation instruction, the UE reads the content of the activation instruction of its header, and enables the packet data convergence protocol layer packet copy function during UL communication. The protocol stack diagram corresponding to the packet replication function of the enabled packet data convergence protocol layer is shown in fig. 14, and two identical data units PDCP PDU1 are sent out by the PDCP layer through two different links, and reach the physical layer through the MAC layer. Similarly, communication between the physical layer and the MAC layer and PDCP layer is also transmitted over two different links. In other embodiments, data packets may also be transmitted simultaneously over three or more links, effectively improving the reliability of the transmission.
In other application scenarios, after receiving the PDU carrying the deactivation instruction, the UE reads the content of the deactivation instruction of its header, and disables the packet data convergence protocol layer packet copy function during UL communication.
As can be seen from the above description, the UE in the fourth embodiment of the present application may receive the activation and deactivation command sent by the base station and carried in the PDU header, so as to enable and disable the packet data convergence protocol layer packet duplication function in UL communication accordingly, thereby improving transmission reliability and saving resources.
Referring to fig. 12, fig. 12 is a schematic diagram of a second embodiment of a base station according to the present application, and the base station 120 includes a third processing circuit 121 and a third communication circuit 122. The third communication circuit 122 is configured to communicate with the UE, and the third processing circuit 121 detects whether UL communication that is about to be performed by the UE supports the packet data convergence protocol layer packet duplication function, if so, continues to determine whether the packet data convergence protocol layer packet duplication function needs to be enabled, and if so, the third communication circuit 122 sends the PDU with the activation instruction to the UE. If the deactivation order to deactivate the packet data convergence protocol layer packet copy function does not need to be carried in the header of the PDU, the third communication circuit 122 sends the PDU carrying the deactivation order to the UE.
As can be seen from the above description, in the second embodiment of the base station of the present application, the third communication circuit detects the UL communication mode that the UE will perform, and the third processing circuit determines whether the communication mode supports the packet data convergence protocol layer packet replication function, if so, it continues to determine whether the packet data convergence protocol layer packet replication function needs to be started, and then the activation/deactivation instruction is carried in the PDU and sent to the UE, so that resources can be saved, and meanwhile, the transmission reliability is enhanced.
Referring to fig. 13, fig. 13 is a schematic structural diagram of a second embodiment of the ue according to the present application,
the user equipment 130 includes a fourth processing circuit 131 and a fourth communication circuit 132. The fourth communication circuit 132 is configured to accept PDUs carrying activation/deactivation instructions from the base station. The fourth processing circuit 131 is configured to read the activation/deactivation instruction from the PDU received by the fourth communication circuit 132, and accordingly enable/disable the packet data convergence protocol layer packet copy function at the time of UL communication.
As can be seen from the above description, in the second embodiment of the present application, the PDU carrying the activation/deactivation command is received by the fourth processing circuit, and the fourth processing circuit reads the command and accordingly enables/disables the packet data convergence protocol layer packet replication function in UL communication, so that the reliability of transmission can be effectively enhanced. And the instructions carried in other messages are read, so that the resources consumed by sending the instructions can be effectively saved.
Referring to fig. 15, fig. 15 is a schematic structural diagram of an embodiment of a device with storage function of the present application, in which at least one program or instruction 151 is stored in a device 150 with storage function, the program 151 or instruction is used to execute the communication method shown in fig. 1, 6, 9 and 11. In one embodiment, the device with the storage function may be a storage chip, a hard disk, a mobile hard disk, a flash disk, an optical disk or other tools capable of reading and writing in the terminal, a server or the like.
As can be seen from the above description, the program or the instruction stored in the embodiment of the apparatus with a storage function of the present application may be used to perform selection of UL communication mode and send the result of the selection, so that the UE performs UL communication according to the result of the selection. The program or the instruction stored in the device embodiment with the storage function can also be used for judging whether the upcoming UL communication supports the packet data convergence protocol layer packet copy function, and sending the activation/deactivation instruction under the supporting condition, so that the packet data convergence protocol layer packet copy function is correspondingly activated/deactivated in the UL traffic of the user equipment.
Compared with the prior art, the embodiment of the application adopts the split SRB structure, and one or two of LTE and NR can be selected as the UL communication mode, thereby improving the reliability of UL communication and reducing the delay of signal transmission. And the communication modes can be dynamically adjusted based on the quality of the current two communication modes, so that the communication resources are reasonably allocated and utilized, and the resource waste is reduced. Meanwhile, the selection instruction occupies the transmission resource of the minimum data bit, and further resources are saved.
In addition, the embodiment of the application informs the UE to start in UL communication under the condition that the UL communication mode supports the packet data convergence protocol layer packet replication function, thereby improving the transmission reliability.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.
Claims (10)
1. A method of communication, comprising:
the base station detects an uplink communication mode to be performed by the user equipment and confirms whether the uplink communication mode supports a packet data convergence protocol packet replication function or not;
if the uplink communication mode supports the packet data convergence protocol packet copying function, sending an activation/deactivation instruction to the user equipment so that the user equipment can start/stop the packet data convergence protocol packet copying function during uplink communication;
before the base station detects the upcoming uplink communication mode of the user equipment, the method further comprises the following steps:
and sending a selection instruction of the uplink communication mode to the user equipment so that the user equipment determines the uplink communication mode based on the current communication mode in the stored sequence and the position direction indicated by the selection instruction, wherein the selection instruction of the uplink communication mode is carried by one data bit.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises,
if the uplink communication mode supports the packet data convergence protocol packet replication function, sending an activation/deactivation instruction to the user equipment includes:
and sending the activation instruction to the user equipment through a data protocol data unit in a packet data convergence protocol.
3. The method according to claim 2, wherein the activation instruction is carried by a header of the data protocol data unit.
4. The method of claim 1, wherein before the base station detects an upcoming uplink communication mode for the user equipment and confirms whether the uplink communication mode supports a packet data convergence protocol packet duplication function, the method further comprises:
the base station evaluates the transmission quality of at least two communication modes which can be selected by the user equipment so as to select at least one communication mode as an uplink communication mode to be performed by the user equipment;
the sending an activation/deactivation instruction to the user equipment to enable/disable a packet data convergence protocol packet duplication function when the user equipment is in uplink communication, including:
and sending an activation/deactivation instruction to the user equipment so that the user equipment enables/disables the packet data convergence protocol packet replication function in uplink communication and determines the upcoming uplink communication mode according to the activation/deactivation instruction.
5. A method of communication, comprising:
the user equipment receives an activation/deactivation instruction from a base station, wherein the activation/deactivation instruction is sent by the base station based on the fact that the uplink communication mode to be carried out by the user equipment is detected to support a packet data convergence protocol packet copying function;
the user equipment enables/disables a packet data convergence protocol packet copying function in uplink communication;
wherein before the user equipment receives the activation/deactivation instruction from the base station, the method further comprises:
the user equipment receives a selection instruction of the uplink communication mode sent by the base station, and determines the uplink communication mode based on the current communication mode in a stored sequence and the position direction indicated by the selection instruction, wherein the selection instruction of the uplink communication mode is carried by one data bit.
6. The method of claim 5, wherein the step of determining the position of the probe is performed,
the activation instruction includes a data protocol data unit in a packet data convergence protocol.
7. The method of claim 5, wherein after the user equipment receives the activation/deactivation instruction from the base station, the method further comprises:
and determining an upcoming uplink communication mode of the user equipment according to the activation/deactivation instruction.
8. A base station comprising a third processing circuit and a third communication circuit electrically coupled to each other, the third processing circuit, in operation, executing instructions to implement the method of any of claims 1-3.
9. A user equipment comprising fourth processing circuitry and fourth communications circuitry electrically coupled to each other, the fourth processing circuitry, in operation, executing instructions to implement the method of any of claims 5-6.
10. An apparatus having a storage function, characterized in that instructions are stored which, when executed, implement the method of any of claims 1-4, 5-7.
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| CN108810982B (en) | 2021-09-07 |
| CN111866948A (en) | 2020-10-30 |
| CN108810982A (en) | 2018-11-13 |
| WO2018201678A1 (en) | 2018-11-08 |
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