CN111867122B - Random access method, network side node and terminal - Google Patents
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- 238000004590 computer program Methods 0.000 claims description 7
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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Abstract
The invention provides a random access method, a network side node and a terminal. Wherein the method comprises the following steps: after sending a random access request to an auxiliary node, receiving a random access response message sent by a main node or the auxiliary node; and the uplink scheduling grant of the random access response message is used for indicating the target uplink resource of the main node. By adopting the random access method, after the terminal sends the random access request to the auxiliary node, the uplink scheduling authorization of the received random access response message is used for indicating the target uplink resource of the main node, so that the target uplink resource can be utilized to complete the random access process with the auxiliary node, and the problems that the random access process with the auxiliary node cannot be successfully completed and the access success probability is low due to poor uplink quality of the auxiliary node are avoided.
Description
Technical Field
The present invention relates to the field of wireless technologies, and in particular, to a random access method, a network side node, and a terminal.
Background
A terminal supporting Dual-Connectivity (DC) may connect two base stations simultaneously, and Dual-Connectivity may provide a higher rate for a user and improve the utilization rate of radio resources of the entire wireless network system.
At present, based on a dual connectivity framework in the prior art, in the secondary base station SgNB addition process, after the SgNB addition request obtains a response and the configuration of the corresponding secondary node is completed, the terminal initiates random access on the secondary node.
When the terminal initiates random access on the auxiliary node, a random access process is completed between the terminal and the auxiliary node, the requirement of msg1 and msg3 transmission in the random access process on an uplink channel is high, and when the uplink quality of the auxiliary node is poor, the random access process cannot be completed smoothly, so that the success probability of the random access process in the prior art is low.
Disclosure of Invention
The technical scheme of the invention aims to provide a random access method, a network side node and a terminal, which are used for solving the problem of low success probability of completing a random access process between the terminal and an auxiliary node in the addition process of an auxiliary base station SgNB under a dual-connection architecture.
One embodiment of the present invention provides a random access method, which is applied to a terminal under a dual connectivity architecture, wherein the method includes:
after sending a random access request to an auxiliary node, receiving a random access response message sent by a main node or the auxiliary node;
and the uplink scheduling grant of the random access response message is used for indicating the target uplink resource of the main node.
One embodiment of the present invention provides a random access method, which is applied to a network side node under a dual connectivity architecture, wherein the method includes:
after a terminal sends a random access request to an auxiliary node, a network side node sends a random access response message to the terminal;
wherein the uplink scheduling grant of the random access response message is used to indicate a target uplink resource of a master node, and the network side node is the slave node or the master node.
One embodiment of the present invention provides a terminal, including a transceiver, where the transceiver is configured to: after sending a random access request to an auxiliary node, receiving a random access response message sent by a main node or the auxiliary node;
and the uplink scheduling grant of the random access response message is used for indicating the target uplink resource of the master node.
One embodiment of the present invention provides a network side node, including a transceiver, where the transceiver is configured to:
after a terminal sends a random access request to an auxiliary node, sending a random access response message to the terminal;
wherein the uplink scheduling grant of the random access response message is used to indicate a target uplink resource of a master node, and the network side node is the slave node or the master node.
One embodiment of the present invention provides a terminal, including a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the processor, when executing the program, implements the random access method as described in any one of the above.
One embodiment of the present invention provides a network side node, including a memory, a processor, and a computer program stored in the memory and executable on the processor; wherein the processor, when executing the program, implements the random access method as described in any one of the above.
One embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the steps in the random access method as described in any one of the above.
At least one of the above technical solutions of the present invention has the following beneficial effects:
the random access method of the embodiment of the invention utilizes the characteristic that the transmission reliability of the main node is superior to that of the auxiliary node, and after the terminal sends the random access request to the auxiliary node, the uplink scheduling authorization of the received random access response message is used for indicating the target uplink resource of the main node, so that the terminal can further utilize the target uplink resource on the main node to complete the random access process with the auxiliary node, and the problems that the random access process with the auxiliary node cannot be successfully completed and the access success probability is lower due to poor uplink quality of the auxiliary node are solved.
Drawings
Fig. 1 is a flowchart illustrating a random access method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a random access method according to another embodiment of the present invention;
fig. 3 is a schematic flowchart of an adding process of an secondary base station SgNB according to an embodiment of the random access method implemented in the present invention;
fig. 4 is a schematic flowchart of an addition process of an secondary base station SgNB according to another embodiment of the present invention for implementing the random access method;
fig. 5 is a schematic structural diagram of a network side node according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a network-side node according to another embodiment of the present invention;
fig. 8 is a schematic structural diagram of a terminal according to another embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The random access method according to the embodiment of the present invention is applied to a wireless communication system, which is a dual connectivity architecture, for example, the dual connectivity architecture includes but is not limited to dual connectivity mode which can only be LTE/5G dual connectivity mode.
In order to solve the problem that the success probability of completing the random access process between a terminal and an auxiliary node is low in the process of adding an auxiliary base station SgNB under a dual-connection architecture, embodiments of the present invention provide a random access method, in which, after a random access request is sent to the auxiliary node, uplink scheduling grant of a received random access response message is used to indicate a target uplink resource of the main node, so that the random access process between the terminal and the auxiliary node can be completed through the auxiliary node of the main node, by using the characteristic that the transmission reliability of the main node is superior to that of the auxiliary node.
It should be noted that, in the embodiment of the present invention, the primary Node may also be referred to as a Master anchor (MN), and the Secondary Node may also be referred to as a Secondary anchor (SN).
Another embodiment of the present invention further provides a random access method, which is applied to a terminal under a dual connectivity architecture, as shown in fig. 1, the method includes:
s110, after sending a random access request to an auxiliary node, receiving a random access response message sent by a main node or the auxiliary node;
and the uplink scheduling grant of the random access response message is used for indicating the target uplink resource of the main node.
In the random access method according to the embodiment of the present invention, after sending a random access request to a terminal, in a received random access response message, an uplink scheduling grant UL grant is used to indicate a target uplink resource of a master node, so that the terminal can further utilize the target uplink resource on the master node to complete a random access process with an auxiliary node, thereby avoiding a problem that the random access process with the auxiliary node cannot be successfully completed due to poor uplink quality of the auxiliary node, and the access success probability is low.
Specifically, after sending the random access request, the terminal receives a random access response message in a Physical Downlink Control Channel (PDCCH) corresponding to the primary node or the secondary node according to the configuration information.
In this embodiment of the present invention, in step S110, in the step of receiving the random access response message sent by the primary node or the secondary node, the Timing advance command of the random access response message indicates the time synchronization information of the secondary node.
And indicating the time synchronization information of the auxiliary node in the Timing advance command of the random access response message so that the terminal keeps synchronization with the auxiliary node during uplink transmission after the random access of the auxiliary node.
When a terminal sends random access on an SN, a random access request, namely msgl, is sent to the SN; based on msg1 sent by the terminal, in the embodiment of the present invention, the SN or the MN may send a random access response message, that is, msg2, to the terminal. Through the target uplink resource of the MN indicated in the msg2, the terminal can utilize the target uplink resource of the MN indicated in the msg2 to complete the random access process with the SN.
In the embodiment of the present invention, based on msg1 sent by the terminal, SN or MN may send a random access response message, that is, msg2, to the terminal.
Further, the method further comprises:
and sending scheduling transmission to the main node through the target uplink resource.
That is, the terminal transmits msg3 to the master node according to the received msg 2.
Further, after transmitting msg3, the method further comprises:
and receiving an access feedback message sent by the main node according to the scheduling transmission.
That is, the receiving master node transmits msg4 in accordance with msg 3.
Through the process, the target uplink resource of the master node indicated in msg2 is utilized, and the random access process between the terminal and the SN can be realized, so that the problems that the random access process with the auxiliary node cannot be successfully completed and the access success probability is low due to poor uplink quality of the auxiliary node are solved.
The random access method according to one embodiment of the present invention is applied to a network side node under a dual connectivity architecture, and as shown in fig. 2, the method includes:
s210, after a terminal sends a random access request to an auxiliary node, a network side node sends a random access response message to the terminal;
and the uplink scheduling grant of the random access response message is used for indicating a target uplink resource of a master node, and the network side node is the auxiliary node or the master node.
By adopting the random access method of the embodiment of the invention, in the random access response message sent to the terminal, the uplink scheduling grant (UL grant) is used for indicating the target uplink resource of the main node, so that the terminal can further utilize the target uplink resource on the main node to complete the random access process with the auxiliary node, and the problems that the random access process with the auxiliary node cannot be successfully completed and the access success probability is low due to poor uplink quality of the auxiliary node are avoided.
In this embodiment of the present invention, in step S210, in the step of sending the random access response message to the terminal, the Timing advance command of the random access response message indicates the time synchronization information of the secondary node.
And indicating the time synchronization information of the auxiliary node in the Timing advance command of the random access response message so that the terminal keeps synchronization with the auxiliary node during uplink transmission after the random access of the auxiliary node.
When the terminal sends random access on the SN, sending a random access request to the SN, namely msgl; based on msg1 sent by the terminal, in the embodiment of the present invention, the SN or the MN may send a random access response message, that is, msg2, to the terminal. Through the target uplink resource of the MN indicated in the msg2, the terminal can utilize the target uplink resource of the MN indicated in the msg2 to complete the random access process with the SN.
With the above random access method according to the embodiment of the present invention, further, when in step S210, the random access response message is sent by an SN, that is, when a network side node applied by the random access method is an SN, the method further includes:
after receiving a random access request sent by the terminal, sending a resource interaction request to the main node;
and receiving interactive information fed back by the main node according to the resource interactive request, wherein the interactive information comprises the target uplink resource.
Specifically, after the SN receives the msg1 sent by the terminal, the SN interacts with the MN to enable the SN to obtain an available uplink resource of the MN, determines the available uplink resource sent by the MN as a target uplink resource, and indicates the target uplink resource to the terminal through an uplink scheduling grant UL grant in the msg 2.
With the above random access method according to the embodiment of the present invention, further, when in step S110, the random access response message is sent by the MN, that is, when the network side node applied by the random access method is the MN, the method further includes:
receiving access request information sent by the auxiliary node after the random access request is acquired;
and sending a random access response message to the terminal according to the access request information.
Specifically, after the SN receives the msg1 sent by the terminal, the SN interacts with the MN with the received information of msg1, i.e., the access request information, so that the MN can send msg2 to the terminal according to the information of msg 1.
The SN interacts with a Random Access preamble in the msg1 with the MN, and the MN scrambles the Random Access response message through a Random Access-Radio Network temporary Identity (RA-RNTI) according to the preamble.
Further, in the random access method according to the embodiment of the present invention, before step S210, the method further includes:
acquiring a random access lead code in a random access request sent by the terminal to an auxiliary node;
and scrambling the random access response message through a random access radio network temporary identifier RA-RNTI according to the random access preamble.
When the random access response message is sent by an SN, that is, when the network side node to which the random access method is applied is an SN, the SN may directly determine a preamble by msg1 sent by the terminal; when the random access response message is sent by the MN, that is, the network side node to which the random access method is applied is the MN, the MN may obtain the information of msg1 and determine the preamble by interacting with the MN through the SN.
In one implementation manner of the embodiment of the present invention, according to the preamble in msg1, when msg2 is scrambled by RA-RNTI, the determination of RA-RNTI may be performed in a manner of the prior art, and will not be described in detail herein.
In addition, in step S210 of the embodiment of the present invention, in the random access response message, that is, the msg2, the resource location and length of the uplink scheduling grant UL grant and the Timing advance command Timing may be determined by using a manner in the prior art, which is not described in detail herein.
Further, in this embodiment of the present invention, when the network-side node is an MN, after step S210, the method further includes:
receiving scheduling transmission sent by the terminal through the target uplink resource;
and sending an access feedback message to the terminal according to the scheduling transmission.
The scheduling transmission is also msg3 in the random access process, and the feedback message is also msg4 in the random access process. After the terminal receives the msg2 sent by the MN or the SN, the msg3 is sent to the MN according to the target uplink resource indicated in the msg2, and the MN further feeds back msg4 according to the received msg 3.
By the mode, the target uplink resource on the main node is utilized to realize the random access process between the terminal and the SN.
With one embodiment of the random access method according to the embodiment of the present invention, as shown in fig. 3, a process of adding the secondary base station SgNB specifically includes:
s310, the MN sends an SgNB access request to the SN;
s320, the SN sends an SgNB access request confirmation message to the MN;
s330, the MN sends a Radio Resource Control (RRC) connection reconfiguration message to the terminal UE;
s340, the UE feeds back an RRC connection reconfiguration completion message to the MN;
s350, the MN sends an SgNB reconfiguration completion message to the SN;
s360, the UE sends a random access request (msg1) to the SN;
s370, interacting uplink resources available for the MN between the SN and the MN, and determining the uplink resources as target uplink resources;
s380, the SN sends a random access response message (msg2) to the UE according to the determined target uplink resource;
s390, the UE sends a scheduled transmission (msg3) to the MN;
s391, the MN sends an access feedback message (msg4) to the UE.
In the process of adding the secondary base station SgNB, S360 to S391 are processes in which the UE initiates random access on the SN, and after receiving the msg1 sent by the UE, the SN interacts with the MN through the uplink resource available to the MN, and can indicate the target uplink resource on the MN in the msg2 sent to the UE.
With reference to fig. 4, the process of adding the secondary base station SgNB according to another embodiment of the random access method in the embodiment of the present invention specifically includes:
s410, the MN sends an SgNB access request to the SN;
s420, the SN sends an SgNB access request confirmation message to the MN;
s430, the MN sends a Radio Resource Control (RRC) connection reconfiguration message to the terminal UE;
s440, the UE feeds back an RRC connection reconfiguration completion message to the MN;
s450, the MN sends a SgNB reconfiguration completion message to the SN;
s460, the UE sends a random access request (msg1) to the SN;
s470, the information of msg1 is exchanged between SN and MN;
s480, the MN sends a random access response message (msg2) to the UE according to the information of the msg 1;
s490, the UE sends a scheduled transmission (msg3) to the MN;
s491, the MN sends an access feedback message (msg4) to the UE.
In the process of adding the secondary base station SgNB, S460 to S491 are processes in which the UE initiates random access on the SN, wherein the SN sends the information of msg1 to the MN after receiving msg1 sent by the UE, and the MN sends msg2 to the UE to indicate a target uplink resource on the MN.
An embodiment of the present invention further provides a network side node, as shown in fig. 5, where the network side node 500 includes a processor 510 and a transceiver 520, where the transceiver 520 is configured to:
after a terminal sends a random access request to an auxiliary node, a network side node sends a random access response message to the terminal;
and the uplink scheduling grant of the random access response message is used for indicating a target uplink resource of a master node, and the network side node is the auxiliary node or the master node.
Optionally, the time advance command of the random access response message indicates time synchronization information of the secondary node.
Optionally, when the network-side node is the secondary node, the transceiver 520 is further configured to:
after receiving a random access request sent by the terminal, sending a resource interaction request to the main node;
and receiving interaction information fed back by the main node according to the resource interaction request, wherein the interaction information comprises the target uplink resource.
Optionally, when the network-side node is the master node, the transceiver 520 is further configured to:
receiving access request information sent by the auxiliary node after the random access request is acquired;
and the transceiver sends a random access response message to the terminal according to the access request information.
Optionally, the processor 510 is configured to:
acquiring a random access lead code in a random access request sent by the terminal to an auxiliary node;
and scrambling the random access response message through a random access radio network temporary identifier RA-RNTI according to the random access lead code.
Optionally, when the network-side node is the master node, the transceiver 520 is further configured to:
receiving scheduling transmission sent by the terminal through the target uplink resource;
and sending an access feedback message to the terminal according to the scheduling transmission.
In the random access response message sent to the terminal, the network side node in the embodiment of the present invention uses the uplink scheduling grant UL grant to indicate the target uplink resource of the master node, so that the terminal can further utilize the target uplink resource on the master node to complete the random access process with the slave node, thereby avoiding the problem that the random access process with the slave node cannot be successfully completed due to poor uplink quality of the slave node, and the access success probability is low.
An embodiment of the present invention further provides a terminal, as shown in fig. 6, where the terminal 600 includes a transceiver 610, where the transceiver 610 is configured to: after sending a random access request to an auxiliary node, receiving a random access response message sent by a main node or the auxiliary node;
and the uplink scheduling grant of the random access response message is used for indicating the target uplink resource of the main node.
Optionally, in the terminal, the time advance command of the random access response message indicates time synchronization information of the secondary node.
Optionally, the terminal, wherein the transceiver 610 is further configured to:
and sending scheduling transmission to the main node through the target uplink resource.
Optionally, in the terminal, after sending the scheduled transmission to the primary node through the target uplink resource, the transceiver 610 is further configured to:
and receiving a feedback message sent by the main node according to the scheduling transmission.
In the terminal according to the embodiment of the present invention, after sending the random access request to the terminal, in the received random access response message, the uplink scheduling grant UL grant is used to indicate the target uplink resource of the primary node, so that the terminal can further utilize the target uplink resource on the primary node to complete the random access process with the secondary node, thereby avoiding the problem that the random access process with the secondary node cannot be successfully completed due to poor uplink quality of the secondary node, and the access success probability is low.
Another network-side node is provided in the embodiments of the present invention, as shown in fig. 7, including a transceiver 701, a memory 702, a processor 700, and a program stored in the memory 702 and executable on the processor 700; the processor 700 calls and executes programs and data stored in the memory 702.
The transceiver 701 receives and transmits data under the control of the processor 700, and specifically, the processor 700 is configured to read a program in the memory 702 and execute the following processes:
after a terminal sends a random access request to an auxiliary node, sending a random access response message to the terminal;
wherein the uplink scheduling grant of the random access response message is used to indicate a target uplink resource of a master node, and the network side node is the slave node or the master node.
Optionally, the time advance command of the random access response message indicates time synchronization information of the secondary node.
Optionally, when the network-side node is the secondary node, the processor 700 is further configured to:
after receiving a random access request sent by the terminal, sending a resource interaction request to the main node;
and receiving interactive information fed back by the main node according to the resource interactive request, wherein the interactive information comprises the target uplink resource.
Optionally, when the network-side node is the master node, the processor 700 is further configured to:
receiving access request information sent by the auxiliary node after the random access request is acquired;
wherein, the processor 700 sends a random access response message to the terminal according to the access request information.
Optionally, the processor 700 is further configured to:
acquiring a random access lead code in a random access request sent by the terminal to an auxiliary node;
and scrambling the random access response message through a random access radio network temporary identifier RA-RNTI according to the random access preamble.
Optionally, when the network-side node is the master node, the processor 700 is further configured to:
receiving scheduling transmission sent by the terminal through the target uplink resource;
and sending an access feedback message to the terminal according to the scheduling transmission.
Where in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 700 and various circuits of memory represented by memory 702 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 701 may be a number of elements including a transmitter and a receiver providing a means for communicating with various other apparatus over a transmission medium. The processor 700 is responsible for managing the bus architecture and general processing, and the memory 702 may store data used by the processor 700 in performing operations.
Another aspect of the embodiments of the present invention further provides a terminal, as shown in fig. 8, including: a processor 801; and a memory 803 connected to the processor 801 through a bus interface 802, wherein the memory 803 is used for storing programs and data used by the processor 801 in executing operations, and the processor 801 calls and executes the programs and data stored in the memory 803.
The transceiver 804 is connected to the bus interface 802, and is configured to receive and transmit data under the control of the processor 801, and specifically, the processor 801 is configured to read a program in the memory 803, and execute the following processes:
after sending a random access request to an auxiliary node, receiving a random access response message sent by a main node or the auxiliary node;
and the uplink scheduling grant of the random access response message is used for indicating the target uplink resource of the main node.
Optionally, the time advance command of the random access response message indicates time synchronization information of the secondary node.
Optionally, the processor 801 is further configured to:
and sending scheduling transmission to the main node through the target uplink resource.
Optionally, after sending a scheduling transmission to the master node through the target uplink resource, the processor 801 is further configured to:
and receiving an access feedback message sent by the main node according to the scheduling transmission.
It should be noted that in FIG. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by the processor 801 and various circuits of memory represented by the memory 803 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 804 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different terminals, the user interface 805 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 801 in performing operations.
Those skilled in the art will understand that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program includes instructions for executing part or all of the steps of the above methods; and the program may be stored in a readable storage medium, which may be any form of storage medium.
In addition, the present invention also provides a computer readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the steps in the random access method as described in any one of the above.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other media capable of storing program codes.
While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the principles of the invention as set forth in the appended claims.
Claims (10)
1. A random access method is applied to a terminal under a dual connectivity architecture, and is characterized in that the method comprises the following steps:
after sending a random access request to an auxiliary node, receiving a random access response message sent by a main node or the auxiliary node;
and the uplink scheduling grant of the random access response message is used for indicating the target uplink resource of the main node.
2. The random access method according to claim 1, wherein in the step of receiving the random access response message sent by the primary node or the secondary node, the timing advance command of the random access response message indicates the timing synchronization information of the secondary node.
3. The random access method of claim 1, wherein the method further comprises:
and sending scheduling transmission to the main node through the target uplink resource.
4. The random access method of claim 3, wherein after sending the scheduled transmission to the primary node over the target uplink resource, the method further comprises:
and receiving an access feedback message sent by the main node according to the scheduling transmission.
5. A random access method is applied to a network side node under a dual connectivity architecture, and is characterized in that the method comprises the following steps:
after a terminal sends a random access request to an auxiliary node, a network side node sends a random access response message to the terminal;
wherein the uplink scheduling grant of the random access response message is used to indicate a target uplink resource of a master node, and the network side node is the slave node or the master node.
6. A terminal comprising a transceiver, wherein the transceiver is configured to:
after sending a random access request to an auxiliary node, receiving a random access response message sent by a main node or the auxiliary node;
and the uplink scheduling grant of the random access response message is used for indicating the target uplink resource of the main node.
7. A network-side node comprising a transceiver, wherein the transceiver is configured to:
after a terminal sends a random access request to an auxiliary node, a network side node sends a random access response message to the terminal;
and the uplink scheduling grant of the random access response message is used for indicating a target uplink resource of a master node, and the network side node is the auxiliary node or the master node.
8. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor; a random access method according to any one of claims 1 to 4, when the processor executes the program.
9. A network-side node comprising a memory, a processor and a computer program stored on the memory and executable on the processor; wherein the processor, when executing the program, implements the random access method of claim 5.
10. A computer readable storage medium, having stored thereon a computer program, characterized in that the program, when being executed by a processor, is adapted to carry out the steps of the random access method of any one of claims 1 to 4, or to carry out the steps of the random access method of claim 5.
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