WO2020211080A1 - Method for triggering random access process and related device - Google Patents

Abstract

Disclosed are a method for triggering a random access process. The method comprises: a terminal detecting a paging message on a first downlink carrier of a first cell, wherein the paging message is sent by the first access network device via the first downlink carrier, and the first cell is deployed in a first frequency layer; and after it is determined that the terminal is paged by the first access network device according to the paging message, the terminal sending a random access message on a first uplink carrier, wherein the first uplink carrier is deployed in a first cell on the first frequency layer or a second cell on the second frequency layer, and the first frequency layer is not overlapped with the second frequency layer, and the random access message is used for random access. Further provided in the embodiments of the present application are a corresponding terminal, a first access network device and a second access network device. By means of the technical solution of the present application, in the prior art, a second access network device is used to send a paging message in each beam direction, thereby improving the resource utilization rate in a paging process.

Description

Method and related device for triggering random access process Technical field

This application relates to the field of communication technology, and mainly relates to a method and related devices for triggering a random access process.

Background technique

The wireless traffic system can be triggered by uplink services or downlink services. The communication process triggered by the uplink service is triggered by the terminal device initiating a random access channel (RACH) process, so that a radio resource control (RRC) connection can be established with the access network device. After a successful connection Then business communication can be carried out. The communication process triggered by the downlink service is triggered by the access network device on the network side initiating a paging process to the terminal device. After receiving the paging message, the terminal device initiates the RACH process to establish an RRC connection with the access network device and then perform the business Communication.

Considering the mobility of the terminal device, the network side device cannot know the specific cell where the terminal device resides. Therefore, it is usually necessary to maintain a larger paging tracking area, that is, a larger number of cells generally form the paging area. Call the tracking area. Therefore, all cells in the paging tracking area where the terminal device resides need to initiate a paging message to the terminal device, so as to ensure that no matter which cell the terminal device resides in the paging tracking area, it will be A paging message is received. In the existing fourth generation (4G) system, the transmission of common channels and paging messages adopts an omnidirectional transmission mechanism or a wide beam transmission mechanism, so that 4G systems mainly deployed in low-frequency points can Omnidirectional transmission covers a large area of the cell; while the fifth generation (5G) system uses a beam-based transmission mechanism. In order to achieve a certain coverage area, the beam direction needs to be very thin, that is, the coverage angle is small, resulting in The unidirectional beam cannot satisfy the omni-directional coverage of the cell, so the 5G system adopts the beam scanning method, that is, the transmission of the common channel and the paging message needs to be sent through the beam scanning in each beam direction. Moreover, after receiving the paging message, the terminal device also triggers the random access process with the same network side device.

Therefore, for the transmission of paging messages, the existing 4G system needs to be sent separately in all cells in the paging tracking area; while for the 5G system based on the beam transmission mechanism, it is not only required to be in all cells in the paging tracking area. They are all sent separately, and they need to be sent separately in each beam direction in each cell in the paging tracking area. Therefore, the existing method is adopted from the paging to the successful completion of the random access procedure, so that the resource utilization efficiency in the transmission of the paging message is low.

Summary of the invention

The embodiment of the application provides a method for triggering a random access process, which avoids the use of a second access network device in the prior art to send paging messages in each beam direction, and improves resource utilization in the paging process. rate.

In view of this, the embodiments of this application provide the following solutions:

In the first aspect, an embodiment of the present application provides a method for triggering a random access procedure. The method may include: a terminal detects a paging message on a first downlink carrier of a first cell, and the paging message is sent by the first access network The device transmits through the first downlink carrier, and the first cell is deployed in the first frequency layer; after the terminal determines that it is paged by the first access network device according to the paging message, it transmits a random access message on the first uplink carrier. The uplink carrier is deployed in the first cell on the first frequency layer or the second cell on the second frequency layer. The first frequency layer and the second frequency layer do not overlap, and the random access message is used for random access. The first access network device is only responsible for sending paging messages on the first frequency layer, avoiding the use of the second access network device in the prior art to send paging messages in each beam direction, and improving paging Resource utilization in the process.

Optionally, in combination with the above first aspect, in a first possible implementation manner, before the terminal detects the paging message on the first downlink carrier of the first cell, it may further include: when the first uplink carrier is deployed on the first downlink carrier. In the second cell on the second frequency layer, the terminal receives the random access channel configuration information sent by the second access network device on the first downlink carrier of the second cell. The configuration information can be used as a basis for sending random access messages.

Optionally, in combination with the first possible implementation manner of the first aspect described above, in the second possible implementation manner, the terminal receives a random message sent by the second access network device on the first downlink carrier of the second cell. After the configuration information of the access channel, it may further include: the terminal receives the configuration signaling sent by the second access network device on the first downlink carrier of the second cell, and the configuration signaling carries the cell configuration information of the first cell; The terminal obtains the paging configuration information from the cell configuration information of the first cell; the terminal detecting the paging message on the first downlink carrier of the first cell may include: the terminal performs the paging according to the first downlink carrier of the first cell Configuration information detects paging messages. Since the paging configuration information comes from the first cell, the terminal can determine which first access network device is paged according to the paging configuration information, which improves the accuracy of paging.

Optionally, in combination with the above-mentioned first aspect, in a third possible implementation manner, the terminal detecting the paging message on the first downlink carrier of the first cell may include: the terminal detecting the synchronization signal of the first cell to Obtain the cell identity of the first cell; the terminal reads the paging configuration information according to the cell identity of the first cell; the terminal detects the paging message according to the paging configuration information on the first downlink carrier of the first cell. Since the cell identity of the first cell can be obtained from the synchronization signal, the paging configuration information obtained therefrom is more reliable.

Optionally, in combination with any one of the first to third possible implementation manners of the first aspect, in the fourth possible implementation manner, sending the random access message on the first uplink carrier may include: terminal Send a random access message to the second access network device on the first uplink carrier of the second cell according to the configuration information of the random access channel.

Optionally, in combination with the above-mentioned first aspect, in a fifth possible implementation manner, before the terminal detects the paging message on the first downlink carrier of the first cell, the method may further include: when the first uplink carrier is deployed When in the first cell on the first frequency layer, the terminal receives on the first downlink carrier the configuration information of the random access channel sent by the second access network device.

Optionally, in combination with the fifth possible implementation manner of the first aspect described above, in a sixth possible implementation manner, the terminal receives on the first downlink carrier a random access sent by a second access network device. After the configuration information of the incoming channel, it may further include: the terminal receives on the first downlink carrier the paging configuration information and identification information sent by the second access network device, where the identification information is independent of all The cell identity of the first cell.

Optionally, in combination with the sixth possible implementation manner of the first aspect described above, in the seventh possible implementation manner, the terminal detecting the paging message on the first downlink carrier of the first cell may include: A paging message is detected on a downlink carrier based on the identification information and the paging configuration message.

Optionally, in combination with the fifth or seventh possible implementation manner of the first aspect, in the eighth possible implementation manner, sending a random access message on the first uplink carrier may include: The first uplink carrier of the cell sends a random access message to the second access network device according to the configuration information of the random access channel.

Optionally, in combination with the above first aspect, in a ninth possible implementation manner, before the terminal detects the paging message on the first downlink carrier of the first cell, it may further include: the terminal is on the first downlink carrier Receiving the configuration information of the random access channel sent by the second access network device.

Optionally, in combination with the ninth possible implementation manner of the first aspect described above, in a tenth possible implementation manner, the terminal receives on the first downlink carrier the configuration of the random access channel sent by the second access network device After the information, it may also include: the terminal obtains a paging configuration message on the first downlink carrier, and the paging configuration message is used to detect the paging message.

Optionally, in combination with the tenth possible implementation manner of the first aspect described above, in the eleventh possible implementation manner, sending the random access message on the first uplink carrier may include: the terminal is on the first uplink carrier Send a random access message to the second access network device according to the configuration information of the random access channel, and the random access message and the identification information of the second access network device are forwarded by the second access network device to the first access network device ; The terminal receives the first response message sent by the first access network device on the first downlink carrier, the first response message includes uplink authorization information; the terminal sends the second access network device on the first uplink carrier according to the uplink authorization information Send the first message, the first message is forwarded by the second access network device to the first access network device; the terminal receives the second response message sent by the first access network device on the first downlink carrier, the second response message Including downstream data packets.

In the second aspect, an embodiment of the present application provides a method for triggering a random access process. The method may include: a second access network device sends configuration information of a random access channel to a terminal, and the configuration information of the random access channel is used for The terminal sends a random access message on the first uplink carrier. The first uplink carrier is deployed in the first cell on the first frequency layer or the second cell on the second frequency layer. The first frequency layer and the second frequency layer do not overlap. , The random access message is used for random access.

Optionally, in combination with the above second aspect, in the first possible implementation manner, after the second access network device sends the configuration information of the random access channel to the terminal, it may further include: when the first uplink carrier is deployed in In the second cell on the second frequency layer, the second access network device sends configuration signaling to the terminal on the first downlink carrier of the second cell. The configuration signaling carries the configuration information of the first cell. The configuration information includes paging configuration information, which is used by the terminal to detect paging messages.

Optionally, in combination with the first possible implementation manner of the second aspect described above, in the second possible implementation manner, the second access network device sends configuration signaling to the terminal on the first downlink carrier of the second cell After that, it may also include: the second access network device receives the random access message sent by the terminal on the first uplink carrier of the second cell.

Optionally, in combination with the above second aspect, in a third possible implementation manner, it may further include: when the first uplink carrier is deployed in the first cell on the first frequency layer, the second access network device is in the The first downlink carrier of a cell sends paging configuration information and identification information to the terminal. The identification information is a cell identification independent of the first cell. The identification information and the paging configuration message are used for the terminal to detect paging messages.

Optionally, in combination with the third possible implementation manner of the second aspect described above, in the fourth possible implementation manner, the second access network device sends the paging configuration to the terminal on the first downlink carrier of the first cell After the information and the identification information, it may also include: the second access network device receives the random access message sent by the terminal on the first uplink carrier of the first cell.

Optionally, in combination with the second aspect described above, in a fifth possible implementation manner, after the second access network device sends the configuration information of the random access channel to the terminal, it may further include: Receive the random access message sent by the terminal on an uplink carrier and obtain the identification information; the second access network device forwards the random access message and identification information to the first access network device; the second access network device is on the first access network device After the network access device sends the first response message to the terminal, it receives the first message sent by the terminal on the first uplink carrier; the second access network device forwards the first message to the first access network device, so that the first access The network device sends a second response message to the terminal, where the second response message includes a downlink data packet.

In a third aspect, an embodiment of the present application provides a method for triggering a random access procedure. The method may include: the first access network device sends a paging message to the terminal through the first downlink carrier of the first cell. Used for the terminal to determine that it is paged by the first access network device, and the first cell is deployed in the first frequency layer.

Optionally, with reference to the third aspect described above, in the first possible implementation manner, after the first access network device sends a paging message to the terminal through the first downlink carrier of the first cell, it may further include: The access network device receives the random access message forwarded by the second access network device and the identification information of the second access network device. The random access message is sent by the terminal on the first uplink carrier; the first access network device is on the first uplink carrier; A first response message is sent to the terminal on a downlink carrier. The first response message includes uplink authorization information. The uplink authorization information is used by the terminal to send the first message to the second access network device on the first uplink carrier; The network device receives the first message forwarded by the second access network device; the first access network device sends a second response message to the terminal on the first downlink carrier, and the second response message includes a downlink data packet.

In a fourth aspect, an embodiment of the present application provides a terminal for triggering a random access procedure, which may include: a detection unit configured to detect a paging message on a first downlink carrier of a first cell, and the paging message is received by the first cell. The network-connected device transmits via the first downlink carrier, and the first cell is deployed in the first frequency layer; the transmitting unit is used to transmit random data on the first uplink carrier after determining that it is paged by the first access network device according to the paging message Access message. The first uplink carrier is deployed in the first cell on the first frequency layer or the second cell on the second frequency layer. The first frequency layer and the second frequency layer do not overlap. The random access message is used for random access. Access.

Optionally, in combination with the above fourth aspect, in the first possible implementation manner, it may further include: a first receiving unit, configured to detect the paging message on the first downlink carrier of the first cell before the detecting unit, When the first uplink carrier is deployed in the second cell on the second frequency layer, the first receiving unit receives the random access channel configuration information sent by the second access network device on the first downlink carrier of the second cell.

Optionally, in combination with the first possible implementation manner of the fourth aspect described above, in the second possible implementation manner, it may further include: a first acquiring unit, a first receiving unit, and further configured to be in the second cell of the second cell. After receiving the configuration information of the random access channel sent by the second access network device on a downlink carrier, the configuration signaling sent by the second access network device is received on the first downlink carrier of the second cell, and the configuration signaling is Carrying the cell configuration information of the first cell; the first obtaining unit is used to obtain paging configuration information from the cell configuration information of the first cell; the detecting unit is also used to obtain the paging configuration information on the first downlink carrier of the first cell according to the A paging message is detected by the paging configuration information acquired by the acquiring unit.

Optionally, in combination with the fourth aspect described above, in a third possible implementation manner, it may further include: a second acquiring unit and a detecting unit, further configured to detect the synchronization signal of the first cell to obtain the cell of the first cell Identification; a second acquisition unit, used to read the paging configuration information according to the cell identity of the first cell; a detection unit, used to read the paging configuration information acquired by the second acquisition unit on the first downlink carrier of the first cell Detect paging messages.

Optionally, in combination with any one of the first to third possible implementation manners of the fourth aspect described above, in the fourth possible implementation manner, the sending unit is configured to transmit data on the first uplink carrier of the second cell according to the The configuration information of the random access channel received by the first receiving unit sends a random access message to the second access network device.

Optionally, in combination with the above fourth aspect, in a fifth possible implementation manner, it may further include: a second receiving unit, a second receiving unit, configured to detect when the detection unit is on the first downlink carrier of the first cell Before detecting the paging message, when the first uplink carrier is deployed in the first cell on the first frequency layer, receive the random access channel configuration information sent by the second access network device on the first downlink carrier.

Optionally, in combination with the fifth possible implementation manner of the fourth aspect described above, in a sixth possible implementation manner, the second receiving unit is further configured to receive a second reception on the first downlink carrier. After the configuration information of the random access channel sent by the network access device, the paging configuration information and identification information sent by the second access network device are received on the first downlink carrier, and the identification information is independent of all The cell identity of the first cell.

Optionally, in combination with the sixth possible implementation manner of the fourth aspect described above, in the seventh possible implementation manner, the detection unit is configured to use the identification information and search information received by the second receiving unit on the first downlink carrier. The paging configuration message detects paging messages.

Optionally, in combination with the fifth or seventh possible implementation manner of the fourth aspect described above, in the eighth possible implementation manner, the sending unit is configured to receive data on the first uplink carrier of the first cell according to the second The configuration information of the random access channel received by the unit sends a random access message to the second access network device.

Optionally, in combination with the fourth aspect described above, in a ninth possible implementation manner, it may further include: a third receiving unit, a third receiving unit, configured to detect paging on the first downlink carrier of the first cell Before the message, receive the random access channel configuration information sent by the second access network device on the first downlink carrier.

Optionally, in combination with the above-mentioned ninth possible implementation manner of the fourth aspect, in the tenth possible implementation manner, it may further include: a third acquiring unit, an acquiring unit, configured for the third receiving unit in the first downlink After receiving the configuration information of the random access channel sent by the second access network device on the carrier, the paging configuration message is obtained on the first downlink carrier, and the paging configuration message is used to detect the paging message.

Optionally, in combination with the tenth possible implementation manner of the fourth aspect described above, in the eleventh possible implementation manner, the sending unit is configured to use the random access channel received by the third receiving unit on the first uplink carrier Sending a random access message to the second access network device, and the random access message and the identification information of the second access network device are forwarded by the second access network device to the first access network device; the third receiving unit , Used to receive the first response message sent by the first access network device on the first downlink carrier, the first response message including uplink authorization information; the sending unit, used to receive on the first uplink carrier according to the third receiving unit The first message is sent to the second access network device, the first message is forwarded by the second access network device to the first access network device; the third receiving unit is configured to receive on the first downlink carrier The second response message sent by the first access network device, where the second response message includes a downlink data packet.

In a fifth aspect, an embodiment of the present application provides a second access network device that triggers a random access process, which may include: a sending unit, configured to send configuration information of a random access channel to a terminal, and configuration information of the random access channel Used for the terminal to send random access messages on the first uplink carrier, the first uplink carrier is deployed in the first cell on the first frequency layer or the second cell on the second frequency layer, the first frequency layer and the second frequency layer Without coincidence, the random access message is used for random access.

Optionally, in combination with the above fifth aspect, in the first possible implementation manner, the sending unit is further configured to, after sending the configuration information of the random access channel to the terminal, when the first uplink carrier is deployed in the second frequency layer In the second cell, the configuration signaling is sent to the terminal on the first downlink carrier of the second cell. The configuration signaling carries the configuration information of the first cell. The configuration information of the first cell includes paging configuration information, The paging configuration information is used for the terminal to detect paging messages.

Optionally, in combination with the first possible implementation manner of the fifth aspect described above, in the second possible implementation manner, it may further include: a first receiving unit, where the first receiving unit is configured for the sending unit in the second cell After sending the configuration signaling to the terminal on the first downlink carrier of the second cell, the random access message sent by the terminal is received on the first uplink carrier of the second cell.

Optionally, in combination with the above fifth aspect, in a third possible implementation manner, the sending unit is further configured to: when the first uplink carrier is deployed in the first cell on the first frequency layer, in the first cell Paging configuration information and identification information are sent to the terminal on a downlink carrier, the identification information is a cell identification independent of the first cell, and the identification information and the paging configuration message are used for the terminal to detect the paging message.

Optionally, in combination with the third possible implementation manner of the fifth aspect described above, in the fourth possible implementation manner, it may further include: a second receiving unit, a second receiving unit, for the sending unit in the first cell After sending the paging configuration information and identification information to the terminal on the first downlink carrier, the random access message sent by the terminal is received on the first uplink carrier of the first cell.

Optionally, in combination with the above fifth aspect, in a fifth possible implementation manner, it may further include: a third receiving unit, a forwarding unit, and a third receiving unit, configured to send the random access channel configuration to the terminal by the sending unit After receiving the information, receive the random access message sent by the terminal on the first uplink carrier and obtain the identification information; a forwarding unit, configured to forward the random access message and identification information received by the third receiving unit to the first access network device; The third receiving unit is configured to receive the first message sent by the terminal on the first uplink carrier after the first access network device sends the first response message to the terminal; the forwarding unit is configured to forward the first message received by the third receiving unit A message is sent to the first access network device, so that the first access network device sends a second response message to the terminal, and the second response message includes a downlink data packet.

In a sixth aspect, an embodiment of the present application provides a first access network device that triggers a random access process, which may include: a sending unit, configured to send a paging message to the terminal through the first downlink carrier of the first cell, The paging message is used for the terminal to determine that it is paged, and the first cell is deployed in the first frequency layer.

Optionally, in combination with the above sixth aspect, in the first possible implementation manner, it may further include: a receiving unit, a receiving unit, configured to send a paging to the terminal through the first downlink carrier of the first cell when the sending unit After receiving the message, the random access message forwarded by the second access network device and the identification information of the second access network device are received. The random access message is sent by the terminal on the first uplink carrier; the sending unit is used to download The first response message is sent to the terminal on the uplink carrier, the first response message includes uplink authorization information, and the uplink authorization information is used by the terminal to send the first message to the second access network device on the first uplink carrier; the receiving unit is used for receiving The first message forwarded by the second access network device; a sending unit, configured to send a second response message to the terminal on the first downlink carrier, the second response message including a downlink data packet.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, including instructions, characterized in that, when the instructions are executed on an electronic device, the electronic device is caused to execute the first aspect or the first aspect. Any one of the possible implementation methods.

In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, including instructions, characterized in that, when the instructions run on an electronic device, the electronic device is caused to execute the second aspect or the second aspect. Any one of the possible implementation methods.

In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium, including instructions, characterized in that, when the instructions are executed on an electronic device, the electronic device is caused to execute the third aspect or the third aspect. Any one of the possible implementation methods.

In a tenth aspect, the embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to execute a method such as the first aspect or any one of the possible implementation manners of the first aspect.

In an eleventh aspect, the embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the second aspect or any one of the possible implementation methods of the second aspect.

In the twelfth aspect, the embodiments of the present application provide a computer program product containing instructions that, when run on a computer, cause the computer to execute the third aspect or any one of the possible implementation methods of the third aspect.

In a thirteenth aspect, the present application provides a chip system including a processor, which is used to support the terminal to implement the functions involved in the first aspect or any one of the possible implementation manners of the first aspect. In a possible design, the chip system also includes a memory, and the memory is used to store the necessary program instructions and data of the micro-control unit. The chip system can be composed of chips, or include chips and other discrete devices.

In a fourteenth aspect, the present application provides a chip system including a processor, which is used to support a second access network device to implement the above-mentioned second aspect or any one of the possible implementations of the second aspect. . In a possible design, the chip system also includes a memory, and the memory is used to store the necessary program instructions and data of the micro-control unit. The chip system can be composed of chips, or include chips and other discrete devices.

In a fifteenth aspect, this application provides a chip system that includes a processor for supporting a first access network device to implement the functions involved in the third aspect or any one of the possible implementation manners of the third aspect. . In a possible design, the chip system also includes a memory, and the memory is used to store the necessary program instructions and data of the micro-control unit. The chip system can be composed of chips, or include chips and other discrete devices.

Among them, the technical effects brought by any one of the fourth aspect, seventh aspect, tenth aspect, and thirteenth aspect can be referred to the technical effects brought about by different implementation manners in the first aspect, which will not be omitted here. Repeat.

Among them, the technical effects brought by any one of the fifth aspect, the eighth aspect, the eleventh aspect, and the fourteenth aspect can be referred to the technical effects brought about by the different implementation manners in the second aspect. Repeat it again.

Among them, the technical effects brought by any one of the sixth aspect, the ninth aspect, the twelfth aspect, and the fifteenth aspect can be referred to the technical effects brought about by the different implementation manners in the third aspect. Repeat it again.

It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

In the embodiment of the present application, the first access network device sends a paging message to the terminal on the first downlink carrier of the first cell, so that the terminal can use the first uplink carrier after determining that it is paged by the first access network device. Random access messages are sent on the Internet to facilitate random access, so that the first access network device is only responsible for sending paging messages on the first frequency layer, which avoids the use of second access network devices in the prior art. Paging messages are sent in all beam directions, which improves resource utilization in the paging process.

Description of the drawings

Fig. 1 is a schematic diagram of a scenario of an embodiment of the present application;

2 is a schematic diagram of an embodiment of a method for triggering a random access process provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of another embodiment of a method for triggering a random access process provided by an embodiment of the present application;

4 is a schematic diagram of another embodiment of a method for triggering a random access process provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of another embodiment of a method for triggering a random access procedure provided by an embodiment of the present application;

Figure 6 shows a schematic structural diagram of a terminal that triggers a random access procedure;

FIG. 7 shows another schematic structural diagram of a terminal that triggers a random access procedure;

FIG. 8 shows another schematic structural diagram of a terminal that triggers a random access procedure;

FIG. 9 shows another schematic structural diagram of a terminal that triggers a random access procedure;

FIG. 10 shows a schematic structural diagram of a second access network device that triggers a random access process;

FIG. 11 shows another schematic structural diagram of a second access network device that triggers a random access process;

FIG. 12 shows a schematic structural diagram of a second access network device that triggers a random access process;

FIG. 13 shows a schematic structural diagram of a second access network device that triggers a random access process;

FIG. 14 shows a schematic structural diagram of a first access network device that triggers a random access process;

FIG. 15 shows another schematic structural diagram of a first access network device that triggers a random access process;

FIG. 16 is a schematic diagram of the hardware structure of the communication device in an embodiment of the present application.

detailed description

The embodiment of the present application provides a method and related device for triggering a random access process, which avoids sending paging messages in each beam direction, and improves the resource utilization rate from paging to random access.

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, without having to use To describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the implementation of the application described herein can be implemented in a sequence other than those illustrated or described herein, for example. In addition, the terms "include" and "have" and any variations of them are intended to cover non-exclusive inclusion.

In order to solve the problem of low resource utilization in the prior art, a new scheme for triggering the random access process is proposed in the embodiment of this application, thereby avoiding the need for paging tracking area in the prior art. Each cell sends the paging message once, and in the beam transmission-based mechanism, it is also necessary to send separately to each beam direction, which causes the problem of low resource utilization. Fig. 1 is a schematic diagram of a scenario in an embodiment of the present application. As shown in Figure 1, cells can be deployed on the frequency layer f1 and frequency layer f2 respectively. For the frequency layer f1, its frequency is usually 600MHz or 700MHz. Access network equipment or large towers can be deployed on the frequency layer f1. The large tower has a large coverage area and high power, and can send strong paging. Signal, but compared with the terminal that needs to initiate the business, the distance between the two is relatively long, for example: the big tower can be the current one-way downward broadcasting tower, or the macro base station with larger power, etc.; for frequency Layer f2, its frequency is usually 3.5GHz, 4.9GHz or 28GHz. Another access network device or small tower can be deployed on this frequency layer f2. The small tower has a small coverage area and is relatively small compared to business needs. For the initiating terminal, the distance between the two is relatively close, for example: the small tower can be a cellular tower and so on. The coverage of a large tower can include multiple small towers.

It can also be seen from Figure 1 that for paging, the big tower sends the terminal on the frequency layer f1 completely, while for the random access procedure, the terminal sends a random message to the small tower on the uplink carrier after receiving the paging message. The access message is used to trigger the random access procedure, so that the terminal can establish an RRC connection with the small tower and perform business communication.

The cell mentioned above can be composed of a pair of uplink carrier and downlink carrier. It should be noted that the terminal needs to be within the coverage of a small tower or a large tower.

The embodiment of the present application proposes a method for triggering the random access process. With reference to the introduction of the schematic diagram of the scenario of the present application in conjunction with the foregoing FIG. 1, the method and method for triggering the random access process provided by the embodiment of the present application will be introduced below. Please refer to FIG. Fig. 2 is a schematic diagram of an embodiment of a method for triggering a random access process provided by an embodiment of the present application.

As shown in FIG. 2, an embodiment of the method for triggering a random access process provided by the embodiment of the present application includes:

201. The first access network device sends a paging message to the terminal through the first downlink carrier of the first cell.

In this embodiment, the first cell is deployed in the first frequency layer, and the first access network device covers the first cell. Therefore, the first access network device can send to the terminal on the first downlink carrier of the first cell Paging message, the paging message can be carried in the physical downlink shared channel (PDSCH) or the physical downlink control channel (PDCCH), and the PDSCH can be scheduled by the PDCCH or not PDCCH scheduling is required.

202. The terminal detects the paging message on the first downlink carrier of the first cell, and the first cell is deployed in the first frequency layer.

In this embodiment, the terminal receives the paging message on the first downlink carrier of the first cell, and detects the paging message on the carrier. The specific detection method may be that before receiving the paging message, the paging configuration information sent by the second access network device is also received, so as to detect the paging message according to the paging configuration information to determine whether it is received by the first The network access device is paging; or the terminal obtains the paging configuration information after directly detecting the synchronization signal of the first cell, so as to detect the paging message according to the paging configuration information to determine whether it is accessed by the first network Device paging.

203. After determining that the terminal is paged by the first access network device according to the paging message, it sends a random access message on the first uplink carrier, where the random access message is used for random access.

In this embodiment, after the terminal determines that it is paged by the first access network device according to the paging message, that is to say, when the terminal needs to initiate a service at this time, it needs to perform random access in order to establish RRC with the network, thereby entering Data transmission and other processes. Therefore, the terminal needs to send a random access message on the first uplink carrier, and the random access message is used for random access.

It should be noted that the first uplink carrier mentioned above can be deployed in the first cell on the first frequency layer or the second cell on the second frequency layer. The first frequency layer and the second frequency layer do not overlap. . That is to say, for sending random access messages, the terminal can send on the first uplink carrier of the first cell on the first frequency layer, or on the first uplink carrier of the second cell on the second frequency layer. Sending provides a variety of applicable scenarios.

In the embodiment of the present application, the first access network device sends a paging message to the terminal on the first downlink carrier of the first cell, so that the terminal can use the first uplink carrier after determining that it is paged by the first access network device. Random access messages are sent on the Internet to facilitate random access, so that the first access network device is only responsible for sending paging messages on the first frequency layer, which avoids the use of second access network devices in the prior art. Paging messages are sent in all beam directions, which improves resource utilization in the paging process.

The first uplink carrier in FIG. 2 can be deployed in different frequency layers, so it can be described from a different perspective that the terminal sends a random access message on the first uplink carrier.

For ease of understanding, for the scenario where the first uplink carrier is deployed in the second cell on the second frequency layer, the specific process in the embodiment of this application will be described in detail below. Please refer to FIG. 3, which is an example of this application. A schematic diagram of another embodiment of a method for triggering a random access process is provided.

301. The second access network device sends configuration information of a random access channel to a terminal.

In this embodiment, the configuration information of the random access channel may include: random access RACH preamble sequence configuration information or RACH time-frequency resource configuration information, etc.

It should be noted that the purpose of sending the configuration information of the random access channel is to enable the terminal to send a random access message according to the configuration information of the random access channel on the first uplink carrier, thereby performing random access.

302. When the first uplink carrier is deployed in the second cell on the second frequency layer, the terminal receives configuration information of the random access channel on the first downlink carrier of the second cell.

In this embodiment, when the first uplink carrier is deployed in the second cell on the second frequency layer, it means that the second access network device can be deployed with the second frequency layer and cover the second cell, or at this time The terminal will camp on the second cell. Therefore, the terminal can receive the random access channel configuration information sent by the second access network device on the first downlink carrier of the second cell.

It should be noted that, because the second access network device in this embodiment is deployed with a second frequency layer, it shows that the second access network device at this time can trigger the uplink service, but cannot perform downloading. Business triggering. The mentioned triggering process of the uplink service is triggered by the terminal initiating a random access RACH process to the second access network device, while the triggering process of the downlink service cannot be performed, which can be understood as the second access network device’s failure. The paging process can be initiated to the terminal.

303. The second access network device sends configuration signaling to the terminal on the first downlink carrier of the second cell, where the configuration signaling carries cell configuration information of the first cell.

In this embodiment, the terminal needs to detect the paging message according to the paging configuration information, and the paging message in the embodiment of this application is used by the first access network device on the first downlink carrier of the first cell. Therefore, the terminal must know the cell configuration information of the first cell to be able to obtain the paging configuration information. Therefore, the paging configuration information can be obtained by sending configuration signaling by the second access network device. Of course, the configuration signaling must carry the cell configuration information of the first cell.

The cell configuration information of the first cell may further include: a cell identity of the first cell or configuration information for detecting a common channel, and so on.

304. The terminal obtains paging configuration information from the cell configuration information of the first cell.

In this embodiment, the paging configuration information may include time-frequency resources of the PDCCH used to schedule the paging message, and so on.

305. The first access network device sends a paging message to the terminal on the first downlink carrier of the first cell.

In this embodiment, the first cell is deployed on the first frequency layer and does not overlap with the second frequency layer. In order for the paging message to be sent through the first access network device, the terminal must and be able to camp in the first cell on the first frequency layer, that is to say, in the embodiment of this application, the terminal needs to camp in The first cell also needs to camp in the second cell, so the terminal can receive the paging message on the first downlink carrier of the first cell.

It should be noted that the first access network device in this embodiment is only deployed with the first frequency layer, which shows that the first access network device at this time can trigger downlink services, but cannot perform uplink services. Trigger. The mentioned triggering process of the downlink service is triggered by the first access network device initiating a paging process to the terminal. The inability to trigger the uplink service can be understood as the terminal cannot initiate a random access RACH process to the first access network device to trigger.

306. The terminal detects the paging message according to the paging configuration information on the first downlink carrier of the first cell.

In this embodiment, since the paging configuration information can be the time-frequency resource of the PDCCH used to schedule the paging message, etc., the terminal can determine that it is indeed paged by the first access network device according to the paging configuration information. Huh.

Optionally, for the detection of paging messages, the following methods can also be used: the terminal detects the synchronization signal of the first cell to obtain the cell identity of the first cell; the terminal reads the paging configuration information according to the cell identity of the first cell ; The terminal detects the paging message according to the paging configuration information. The aforementioned synchronization signal of the first cell may be a primary and secondary synchronization signal in a new radio (NR) system that currently supports unicast transmission. The synchronization signal can determine the cell identity of the first cell, and then Read the broadcast message of the first cell according to the cell identifier, thereby obtaining paging configuration information for detecting the paging message from the broadcast message. In addition, the configuration information for detecting the common channel can also be obtained from the broadcast message.

307. After determining that the terminal is paged by the first access network device according to the paging message, it sends a random access message to the second access network device on the first uplink carrier of the second cell according to the configuration information of the random access channel. The random access message is used for random access.

In this embodiment, the terminal detects the paging message according to the paging configuration information to determine that after being paged by the first access network device, because the second frequency layer is deployed in the second access network device, and the second access network device The networked equipment covers the second cell where the terminal resides. Therefore, the terminal can send a random access message to the second access network device on the first uplink carrier of the second cell according to the above-mentioned random access channel configuration information, so that the second access network device receives the random access After entering the message, the random access procedure can be triggered to establish an RRC with the terminal to facilitate data transmission and so on.

In the embodiment of the application, since the first access network device is deployed with the first frequency layer and the second access network device is deployed with the second frequency layer, the first access network device that can only initiate downlink services is in the first cell. Send a paging message to the terminal on the first downlink carrier, so that the terminal can send a random access message to the second access network device that can initiate an uplink service on the first uplink carrier, so that the second access network device can perform random access Access, since the first access network device is only responsible for sending paging messages on the first frequency layer, and the second access network device is responsible for random access on the second frequency layer, avoiding the second frequency layer in the prior art. The access device needs to send paging messages in each beam direction, which improves resource utilization in the paging process.

For ease of understanding, for the scenario where the first uplink carrier is deployed in the first cell on the first frequency layer, the specific process in the embodiment of this application will be described in detail below. Please refer to FIG. 4, which is an example of this application. A schematic diagram of another embodiment of a method for triggering a random access process is provided.

401. The second access network device sends configuration information of a random access channel to a terminal.

In this embodiment, the configuration information of the random access channel may include: random access preamble sequence configuration information or RACH time-frequency resource configuration information, etc.

It should be noted that the purpose of sending the configuration information of the random access channel is to enable the terminal to send a random access message according to the configuration information of the random access channel on the first uplink carrier, thereby performing random access.

402. When the first uplink carrier is deployed in the first cell on the first frequency layer, the second access network device sends paging configuration information and identification information to the terminal on the first downlink carrier of the first cell.

In this embodiment, the first uplink carrier is deployed in the first cell on the first frequency layer, which means that the first cell can also be covered by the second access network device. At this time, the second access network device is also deployed There is a first frequency layer, or at this time the terminal will camp in the first cell. Therefore, the terminal can obtain paging configuration information and identification information on the first downlink carrier of the first cell.

The above-mentioned paging configuration information may include time-frequency resources of the PDCCH used to schedule paging messages, etc. The identification information is scrambled information and is independent of the cell identification of the first cell. This is because Both the first access network device and the second access network device exist in the first frequency layer at the same time, and the first cell is deployed in the first frequency layer at this time, so it is necessary to use the scrambled identification information to clarify the paging message The sending source is sent by the first access network device on the first cell.

It should be noted that in this embodiment, both the second access network device and the first access network device are equipped with the first frequency layer. In order to improve resource utilization, the first access network device with higher power is used. The triggering of the downlink service is performed, and the triggering of the uplink service is performed by the second access network device closer to the terminal.

The above-mentioned paging configuration information and identification information can also be obtained in the following ways:

Optionally, method 1: The terminal receives the configuration signaling sent by the second access network device on the first downlink carrier of the first cell, such as RRC signaling, and the configuration signaling carries the configuration of the first cell Information; the terminal obtains paging configuration information and identification information from the cell configuration information of the first cell.

Optionally, Manner 2: The terminal may also detect the synchronization signal of the first cell to obtain the cell identity of the first cell; the terminal reads the paging configuration information and identification information according to the cell identity of the first cell. The mentioned synchronization signal of the first cell can be a primary and secondary synchronization signal in an NR system that currently supports unicast transmission. The synchronization signal can determine the cell identity of the first cell, and then read the first cell identity according to the cell identity. The broadcast message of the cell, thereby obtaining the paging configuration information and identification information used to detect the paging message from the broadcast message. In addition, the configuration information for detecting the common channel can also be obtained from the broadcast message.

403. The first access network device sends a paging message to the terminal on the first downlink carrier of the first cell.

In this embodiment, the first cell is deployed on the first frequency layer and is covered by the first access network device, and the first access network device should also be deployed with the first frequency layer. In the process that does not involve the second frequency layer, in order to send a paging message through the first access network device, the terminal must be camped in the first cell that can be covered by the first access network device and the second access network device at the same time. Staying means being able to camp in the first cell on the first frequency layer, so that the terminal can receive the paging message on the first downlink carrier of the first cell.

404. The terminal detects the paging message according to the paging configuration information and the identification information on the first downlink carrier of the first cell.

In this embodiment, since the paging configuration information can be the time-frequency resource of the PDCCH used to schedule the paging message, etc., the terminal can determine that it is indeed the first access network device based on the paging configuration information and identification information. Paging.

405. After determining that the terminal is paged by the first access network device according to the paging message, it sends a random access message to the second access network device on the first uplink carrier of the first cell according to the configuration information of the random access channel. The random access message is used for random access.

In this embodiment, the terminal detects the paging message according to the paging configuration information to determine that after being paged by the first access network device, since the second access network device is also deployed with the first frequency layer, and the second access network device The network equipment covers the first cell where the terminal resides. Therefore, the terminal can send a random access message to the second access network device on the first uplink carrier of the first cell according to the above-mentioned random access channel configuration information, so that the second access network device receives the random access After entering the message, the random access procedure can be triggered to establish an RRC with the terminal to facilitate data transmission and so on.

In the embodiment of the present application, since the first access network device and the second access network device are simultaneously deployed with the first frequency layer, the first access network device with larger power can be selected to initiate downlink services to the terminal, which can send more The strong paging signal enables the terminal to send a random access message to the second access network device that can initiate uplink services on the first uplink carrier of the first cell, so that the second access network device can perform random access. The first access network device is only responsible for sending paging messages on the first frequency layer, while the second access network device is only responsible for random access on the first frequency layer, avoiding the second access in the prior art The device needs to send paging messages in each beam direction, which improves resource utilization in the paging process.

For ease of understanding, the specific process in the embodiment of the present application will be described in detail below. Please refer to FIG. 5, which is a schematic diagram of another embodiment of a method for triggering a random access process provided in an embodiment of the present application.

501. The second access network device sends configuration information of a random access channel to a terminal.

In this embodiment, the configuration information of the random access channel may include: random access RACH preamble sequence configuration information or RACH time-frequency resource configuration information, etc.

It should be noted that the purpose of sending the configuration information of the random access channel is to enable the terminal to send a random access message according to the configuration information of the random access channel on the first uplink carrier, thereby performing random access.

502. The terminal obtains a paging configuration message on the first downlink carrier.

In this embodiment, because the first cell is only deployed on the first frequency layer, and is covered by the first access network device and the second access network device.

It should be noted that the first access network device in this embodiment is deployed with the first frequency layer, but the second access network device does not deploy the first frequency layer or the second frequency layer, so the terminal will choose to use this Camping in the first cell on the first frequency layer allows the terminal to receive the configuration information of the random access channel sent by the second access network device on the first downlink carrier of the first cell.

The above-mentioned method for obtaining paging configuration information can be as follows: the terminal detects the synchronization signal of the first cell to obtain the cell identity of the first cell; the terminal reads the paging configuration information and the identity according to the cell identity of the first cell information. The mentioned synchronization signal of the first cell can be a primary and secondary synchronization signal in an NR system that currently supports unicast transmission. The synchronization signal can determine the cell identity of the first cell, and then read the first cell identity according to the cell identity. The broadcast message of the cell, thereby obtaining the paging configuration information and identification information used to detect the paging message from the broadcast message. In addition, the configuration information for detecting the common channel can also be obtained from the broadcast message.

503. The first access network device sends a paging message to the terminal on the first downlink carrier of the first cell.

In this embodiment, the first cell is deployed on the first frequency layer and is covered by the first access network device, and the first access network device should also be deployed with the first frequency layer. When the second frequency layer is not involved and the second cell is not involved at the same time, if you want to send a paging message through the first access network device, the terminal must be able to use both the first access network device and the second access network device. Camping in the covered first cell, that is, being able to camp in the first cell on the first frequency layer, so that the terminal can receive the paging message on the first downlink carrier of the first cell.

504. The terminal detects the paging message according to the paging configuration information on the first downlink carrier of the first cell.

In this embodiment, since the paging configuration information can be the time-frequency resource of the PDCCH used to schedule the paging message, etc., the terminal can determine that it is indeed paged by the first access network device according to the paging configuration information. Huh.

505. After determining that the terminal is paged by the first access network device according to the paging message, the terminal sends a random access message to the second access network device on the first uplink carrier according to the configuration information of the random access channel.

In this embodiment, the terminal detects the paging message according to the paging configuration information, so as to determine that it is paged by the first access network device. Therefore, the terminal can send a random access message to the second access network device on the first uplink carrier of the first cell according to the foregoing configuration information of the random access channel.

It should be noted that in this embodiment, the first access network device is deployed with the first frequency layer, and the first access network device with higher power can be selected to initiate downlink services to the terminal. For the initiation of uplink services, in this implementation In the example, it is necessary to forward the random access message and identification information to the first access network device with the help of the second access network device that can only initiate the uplink service but not the downlink service, so as to complete the random access process.

It is further explained that the aforementioned second access network device that can only initiate uplink services but cannot initiate downlink services does not deploy the first frequency layer or the second frequency layer.

506. The second access network device forwards the random access message and the identification information of the second access network device to the first access network device.

In this embodiment, because the second access network device does not deploy a downlink carrier at this time, and the terminal is far from the first access network device, it is not possible to completely rely on the interaction between the first access network device and the terminal. During the access process, at this time, after receiving the random access message, the second access network device needs to send the random access message to the first access network device with a downlink carrier.

It should be noted that before forwarding the random access message and the identification information of the second access network device to the first access network device, the second access network device also needs to obtain its own identification information. The purpose is to complete the random access message. After the access process, the first access network device can be made to redirect the terminal back to the second cell covered by the second access network device on the second frequency layer according to the identification information of the second access network device.

507. The first access network device sends a first response message to the terminal on the first downlink carrier, where the first response message includes uplink authorization information.

In this embodiment, since the first access network device only has a downlink carrier and is far away from the terminal, after receiving the random access message, it will feed back to the terminal a first response message including uplink authorization information, so that the terminal can follow the The uplink authorization information sends the first message to the second access network device.

508. The terminal sends the first message to the second access network device on the first uplink carrier according to the uplink authorization information.

509. The second access network device forwards the first message to the first access network device.

In this embodiment, the second access network device at this time does not deploy a downlink carrier, and the terminal is far from the first access network device. At this time, the second access network device is required to receive the first message. The first message needs to be sent to the first access network device with the downlink carrier, and the random access process is completed by means of the first access network device.

510. The first access network device sends a second response message to the terminal on the first downlink carrier, where the second response message includes a downlink data packet.

In this embodiment, after the terminal receives the second response message sent by the first access network device, it can be determined that the random access process has been successfully completed at this time.

In the embodiment of this application, since the first access network device is deployed with the first frequency layer, but the second access network device is not deployed with the first frequency layer or the second frequency layer, the first access network device with larger power can be selected. The network access device initiates a downlink service to the terminal, that is, sends a paging message to the terminal on the first downlink carrier of the first cell, so that the terminal can only initiate uplink services and cannot initiate downlinks on the first uplink carrier of the first cell. The second access network device of the service sends a random access message, and the second access network device forwards the random access message to the first access network device, thereby completing the random access process, avoiding the prior art The second access device needs to send paging messages in each beam direction, which improves resource utilization in the paging process; at the same time, the terminal only camps on the first cell on the first frequency layer, which prevents the terminal from being The problem of large power consumption caused by the presence of multiple frequency layers.

The foregoing mainly introduces the solution provided by the embodiment of the present application from the perspective of interaction between various network elements. It can be understood that, in order to realize the above-mentioned functions, the terminal, the first access network device, and the second access network device include hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that in combination with the modules and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The embodiment of the present application can divide the terminal, the first access network device, and the second access network device into functional modules according to the foregoing method examples. For example, each functional module can be divided corresponding to each function, or two or two The above functions are integrated in a processing module. The above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

Fig. 6 shows a schematic structural diagram of a terminal that triggers a random access procedure.

As shown in FIG. 6, the terminal 60 that triggers the random access procedure provided by the embodiment of the present application includes: a detection unit 601 and a sending unit 602;

The detecting unit 601 is configured to detect a paging message on the first downlink carrier of the first cell, the paging message is sent by the first access network device through the first downlink carrier, and the first cell is deployed in the first frequency layer;

The sending unit 602 is configured to send a random access message on a first uplink carrier after determining that it is paged by the first access network device according to the paging message. The first uplink carrier is deployed in the first cell or on the first frequency layer. For the second cell on the second frequency layer, the first frequency layer and the second frequency layer do not overlap, and the random access message is used for random access.

In the embodiment of the present application, the first access network device is only responsible for sending paging messages on the first frequency layer, which avoids using the second access network device to send paging messages in each beam direction in the prior art. Improved resource utilization in the paging process.

For ease of understanding, the following describes the terminal in the random access process in the embodiment of the present application in detail. Please refer to FIG. 7. Another embodiment of the terminal 70 in the random access process in the embodiment of the present application includes a detection unit 701 and a sending unit. 702; The function is similar to the above 601-602;

The terminal in the embodiment of the present application may further include: a first receiving unit 703,

The first receiving unit 703 is used for detecting the paging message on the first downlink carrier of the first cell before the detecting unit is deployed when the first uplink carrier is deployed in the second cell on the second frequency layer. The configuration information of the random access channel sent by the second access network device is received on the first downlink carrier of the second cell.

Further, the terminal in the embodiment of the present application may further include: a first obtaining unit 704,

The first receiving unit 703 is further configured to receive on the first downlink carrier of the second cell after receiving the configuration information of the random access channel sent by the second access network device on the first downlink carrier of the second cell The configuration signaling sent by the second access network device, where the configuration signaling carries cell configuration information of the first cell;

The first obtaining unit 704 is configured to obtain paging configuration information from the cell configuration information of the first cell;

The detecting unit 701 is configured to detect a paging message on the first downlink carrier of the first cell according to the paging configuration information obtained by the first obtaining unit 704.

Optionally, the terminal in the embodiment of the present application may further include: a second acquiring unit 705,

The detecting unit 701 is also configured to detect the synchronization signal of the first cell to obtain the cell identity of the first cell;

The second acquiring unit 705 is configured to read paging configuration information according to the cell identity of the first cell;

The detecting unit 701 is configured to detect a paging message on the first downlink carrier of the first cell according to the paging configuration information acquired by the second acquiring unit 705.

Further, the sending unit 702 in the embodiment of the present application can also be used to send the configuration information of the random access channel received by the first receiving unit 703 to the second access network device on the first uplink carrier of the second cell. Send random access message.

In this embodiment of the application, the paging configuration information obtained by the first obtaining unit 704 or the second obtaining unit 705 enables the terminal to detect the paging message sent by the first access network device according to the paging configuration information, which can effectively improve detection Accuracy.

For ease of understanding, the following describes the terminal in the random access process in the embodiment of the present application in detail. Please refer to FIG. 8. Another embodiment of the terminal 80 in the random access process in the embodiment of the present application includes a detection unit 801 and a sending unit. 802; The function is similar to the above 601-602;

The terminal in the embodiment of the present application may further include: a second receiving unit 803,

The second receiving unit 803 is configured to: before the detecting unit 801 detects a paging message on the first downlink carrier of the first cell, when the first uplink carrier is deployed in the first cell on the first frequency layer, The configuration information of the random access channel sent by the second access network device is received on the uplink carrier.

Further, the second receiving unit 803 in the embodiment of the present application is further configured to receive, on the first downlink carrier, the configuration information of the random access channel sent by the second access network device, after On a downlink carrier, paging configuration information and identification information sent by the second access network device are received, where the identification information is a cell identity independent of the first cell.

Further, the detecting unit 801 in the embodiment of the present application can also be used to detect a paging message on the first downlink carrier according to the identification information and the paging configuration message received by the second receiving unit 803.

Further, the sending unit 802 in the embodiment of the present application can also be used to send to the second access network device according to the configuration information of the random access channel received by the second receiving unit 803 on the first uplink carrier of the first cell Random access message.

In this embodiment of the application, the second receiving unit 803 receives the paging configuration information and identification information, so that the terminal distinguishes the first cell on the same frequency layer, clarifies the source of the paging message, and avoids the use of the second connection in the prior art. The network access device sends paging messages in each beam direction, which improves resource utilization in the paging process.

For ease of understanding, the following describes the terminal in the random access process in the embodiment of the present application in detail. Please refer to FIG. 9. Another embodiment of the terminal 90 in the random access process in the embodiment of the present application includes a detection unit 901 and a sending unit. 902; The function is similar to the above 601-602;

The terminal in the embodiment of the present application may further include: a third receiving unit 903,

The third receiving unit 903 is configured to receive the configuration of the random access channel sent by the second access network device on the first downlink carrier before the detecting unit 901 detects the paging message on the first downlink carrier of the first cell information.

Further, the terminal in the embodiment of the present application may further include: a third acquiring unit 904,

The third obtaining unit 903 is configured to obtain the paging configuration message on the first downlink carrier after the third receiving unit 903 receives the configuration information of the random access channel sent by the second access network device on the first downlink carrier , The paging configuration message is used to detect paging messages.

Further, the sending unit 902 in the embodiment of the present application may also be used to send a random access message to the second access network device on the first uplink carrier according to the configuration information of the random access channel received by the third receiving unit 903 , The random access message and the identification information of the second access network device are forwarded by the second access network device to the first access network device;

The third receiving unit 903 may also be configured to receive a first response message sent by the first access network device on the first downlink carrier, where the first response message includes uplink authorization information;

The sending unit 902 may also be configured to send a first message to the second access network device based on the uplink authorization information received by the third receiving unit 903 on the first uplink carrier, and the first message is forwarded by the second access network device to the second access network device. 1. Access network equipment;

The third receiving unit 903 may also be configured to receive a second response message sent by the first access network device on the first downlink carrier, where the second response message includes a downlink data packet.

In the embodiment of the present application, the first access network device is only responsible for sending paging messages on the first frequency layer, which avoids using the second access network device to send paging messages in each beam direction in the prior art. Improved resource utilization in the paging process.

FIG. 10 shows a schematic structural diagram of a second access network device that triggers a random access process.

As shown in FIG. 10, the second access network device 100 that triggers the random access process provided by the embodiment of the present application includes: a sending unit 1001;

The sending unit 1001 is configured to send configuration information of the random access channel to the terminal. The configuration information of the random access channel is used for the terminal to send the random access message on the first uplink carrier, and the first uplink carrier is deployed on the first frequency layer. The first cell or the second cell on the second frequency layer, the first frequency layer and the second frequency layer do not overlap, and the random access message is used for random access.

The sending unit 1001 of the embodiment of the application sends the configuration information of the random access channel to the terminal, so that the terminal can send the random access message according to the configuration information of the random access channel, so that the second access network device is only responsible for the access of the random process. This avoids the use of the second access network device in the prior art to send paging messages in each beam direction, and improves the resource utilization rate in the paging process.

For ease of understanding, the second access network device in the random access process in the embodiment of the present application will be described in detail below, please refer to FIG. 11, another aspect of the second access network device 110 in the random access process in the embodiment of the present application is An embodiment includes a sending unit 1101; the function is similar to the above-mentioned 1001;

The sending unit 1101 is further configured to, after sending the configuration information of the random access channel to the terminal, when the first uplink carrier is deployed in the second cell on the second frequency layer, send the information to the first downlink carrier of the second cell The terminal sends configuration signaling, the configuration signaling carries configuration information of the first cell, the configuration information of the first cell includes paging configuration information, and the paging configuration information is used by the terminal to detect paging messages.

The second access network device in the embodiment of the present application may further include: a first receiving unit 1102,

The first receiving unit 1102 is configured to receive the random access message sent by the terminal on the first uplink carrier of the second cell after the sending unit 1101 sends configuration signaling to the terminal on the first downlink carrier of the second cell.

Further, the sending unit 1101 in the embodiment of the present application can also be used to send a search to the terminal on the first downlink carrier of the first cell when the first uplink carrier is deployed in the first cell on the first frequency layer. Paging configuration information and identification information, the identification information is a cell identification independent of the first cell, and the identification information and paging configuration message are used for the terminal to detect the paging message.

The sending unit 1101 in the embodiment of the present application sends the configuration information of the random access channel to the terminal, so that the terminal can send the random access message according to the configuration information of the random access channel, so that the second access network device is only responsible for the access of the random process. It avoids the use of the second access network device in the prior art to send paging messages in each beam direction, which improves resource utilization in the paging process; and can also send paging configuration information and identification information To the terminal, the terminal can detect the paging message sent by the first access network device according to the paging configuration information and the identification information, which can effectively improve the accuracy of detection.

For ease of understanding, the second access network device in the random access process in the embodiment of the present application will be described in detail below, please refer to FIG. 12, another aspect of the second access network device 120 in the random access process in the embodiment of the present application is An embodiment includes a sending unit 1201; the function is similar to the above-mentioned 1001;

The second access network device in the embodiment of the present application may further include: a second receiving unit 1202,

The second receiving unit 1202 is configured to receive the random access sent by the terminal on the first uplink carrier of the first cell after the sending unit 1201 sends the paging configuration information and identification information to the terminal on the first downlink carrier of the first cell. Into the message.

The sending unit 1001 in the embodiment of the present application sends the configuration information of the random access channel to the terminal, so that the terminal can send the random access message according to the configuration information of the random access channel, so that after the second receiving unit 1202 receives the random access message It is only responsible for the access of the random process, which avoids using the second access network device in the prior art to send paging messages in each beam direction, and improves the resource utilization rate in the paging process.

For ease of understanding, the following describes in detail the terminal of the random access process in the embodiment of the present application. Please refer to FIG. 13. Another embodiment of the second access network device 130 of the random access process in the embodiment of the present application includes sending Unit 1301; similar to the function of 1001 above;

The second access network device in the embodiment of the present application may further include: a third receiving unit 1302, a forwarding unit 1303,

The third receiving unit 1302 is configured to receive the random access message sent by the terminal on the first uplink carrier after the sending unit 1301 sends the configuration information of the random access channel to the terminal, and obtain identification information;

The forwarding unit 1303 is configured to forward the random access message and identification information received by the third receiving unit 1302 to the first access network device;

The third receiving unit 1302 is configured to receive the first message sent by the terminal on the first uplink carrier after the first access network device sends the first response message to the terminal;

The forwarding unit 1303 is configured to forward the first message received by the third receiving unit 1302 to the first access network device, so that the first access network device sends a second response message to the terminal, and the second response message includes a downlink data packet.

In the embodiment of this application, because the second access network device does not have the capability of downlink services, the forwarding unit 1303 is required to forward the random access message and the first message sent by the terminal to the first access network device, so that the In the case of network equipment, the random access process is completed, and at the same time, it avoids that the second access equipment is only responsible for random access and does not need to send paging messages in each beam direction, which improves the resource utilization rate in the paging process .

Figure 14 shows a schematic structural diagram of a first access network device that triggers a random access process.

As shown in FIG. 14, the first access network device 140 that triggers the random access process provided by the embodiment of the present application includes: a sending unit 1401;

The sending unit 1401 is configured to send a paging message to the terminal through the first downlink carrier of the first cell. The paging message is used for the terminal to determine to be paged, and the first cell is deployed in the first frequency layer.

In the embodiment of the present application, the first access network device is only responsible for sending paging messages on the first frequency layer, which avoids using the second access network device to send paging messages in each beam direction in the prior art. Improved resource utilization in the paging process.

For ease of understanding, the following describes in detail the first access network device of the random access process in the embodiment of the present application. Please refer to FIG. 15. One embodiment includes a sending unit 1501; the function is similar to the above-mentioned 1401;

The second access network device in the embodiment of the present application may further include, and further include: a receiving unit 1502,

The receiving unit 1502 is configured to receive the random access message forwarded by the second access network device and the identifier of the second access network device after the sending unit 1501 sends a paging message to the terminal through the first downlink carrier of the first cell Information, the random access message is sent by the terminal on the first uplink carrier;

The sending unit 1501 is configured to send a first response message to the terminal on the first downlink carrier, the first response message includes uplink authorization information, and the uplink authorization information is used by the terminal to send to the second access network device on the first uplink carrier First news

The receiving unit 1502 is configured to receive the first message forwarded by the second access network device;

The sending unit 1501 is configured to send a second response message to the terminal on the first downlink carrier, where the second response message includes a downlink data packet.

In the embodiment of the present application, the first access network device is only responsible for sending paging messages on the first frequency layer, which avoids using the second access network device to send paging messages in each beam direction in the prior art. Improved resource utilization in the paging process.

The above describes the terminal, the first access network device, or the second access network device in the embodiment of the present application from the perspective of a modular functional entity. The following describes the terminal and the first access network device in the embodiment of the present application from the perspective of hardware processing. Network equipment or second access network equipment. FIG. 16 is a schematic diagram of the hardware structure of the communication device in an embodiment of the present application. As shown in Figure 16, the communication device may include:

The communication device includes at least one processor 1601, a communication line 1607, a memory 1603 and at least one communication interface 1604.

The processor 1601 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (server IC), or one or more programs for controlling the execution of the program of this application Integrated circuits.

The communication line 1607 may include a path to transmit information between the aforementioned components.

The communication interface 1604 uses any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet.

The memory 1603 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions The dynamic storage device, the memory can exist independently, and is connected to the processor through the communication line 1607. The memory can also be integrated with the processor.

The memory 1603 is used to store computer-executed instructions for executing the solution of the present application, and the processor 1601 controls the execution. The processor 1601 is configured to execute computer-executable instructions stored in the memory 1603, so as to implement the method for triggering a random access process provided in the foregoing embodiment of the present application.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application program code, which is not specifically limited in the embodiments of the present application.

In a specific implementation, as an embodiment, the communication device may include multiple processors, such as the processor 1601 and the processor 1602 in FIG. 16. Each of these processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).

In a specific implementation, as an embodiment, the communication device may further include an output device 1605 and an input device 1606. The output device 1605 communicates with the processor 1601, and can display information in a variety of ways. The input device 1606 communicates with the processor 1601 and can receive user input in a variety of ways. For example, the input device 1606 may be a mouse, a touch screen device, a sensor device, or the like.

The aforementioned communication device may be a general-purpose device or a dedicated device. In a specific implementation, the communication device may be a desktop computer, a portable computer, a network server, a wireless terminal device, an embedded device, or a device with a similar structure in FIG. 16. The embodiment of the application does not limit the type of communication device.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part.

Those skilled in the art can clearly understand that for the convenience and concise description, the specific working process of the terminal, the first access network device or the second access network device, unit and module described above can be implemented with reference to the foregoing method. The corresponding process in the example will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the above-described embodiments of the terminal, the first access network device, or the second access network device are merely illustrative. For example, the division of the units is only a logical function division, which may be implemented in actual implementation. There are other ways of dividing, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, modules or units, and may be in electrical, mechanical or other forms.

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, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code .

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, a person of ordinary skill in the art should understand that: The technical solutions recorded in the embodiments are modified, or some of the technical features are equivalently replaced; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (46)

1. A method for triggering a random access process, characterized in that it comprises:

   The terminal detects a paging message on the first downlink carrier of the first cell, the paging message is sent by the first access network device through the first downlink carrier, and the first cell is deployed in the first downlink carrier. Frequency layer

   After determining that the terminal is paged by the first access network device according to the paging message, the terminal sends a random access message on a first uplink carrier, and the first uplink carrier is deployed on the first frequency layer The first cell or the second cell on the second frequency layer, the first frequency layer and the second frequency layer do not overlap, and the random access message is used for random access.
2. The method according to claim 1, wherein before the terminal detects the paging message on the first downlink carrier of the first cell, the method further comprises:

   When the first uplink carrier is deployed in the second cell on the second frequency layer, the terminal receives the random access sent by the second access network device on the first downlink carrier of the second cell Channel configuration information.
3. The method according to claim 2, wherein after the terminal receives on the first downlink carrier of the second cell the configuration information of the random access channel sent by the second access network device, the method further comprises :

   Receiving, by the terminal, on the first downlink carrier of the second cell, configuration signaling sent by the second access network device, where the configuration signaling carries cell configuration information of the first cell;

   The terminal obtains paging configuration information from the cell configuration information of the first cell;

   The terminal detecting the paging message on the first downlink carrier of the first cell includes:

   The terminal detects the paging message according to the paging configuration information on the first downlink carrier of the first cell.
4. The method according to claim 1, wherein the terminal detecting the paging message on the first downlink carrier of the first cell comprises:

   Detecting the synchronization signal of the first cell by the terminal to obtain the cell identity of the first cell;

   The terminal reads paging configuration information according to the cell identity of the first cell;

   The terminal detects the paging message according to the paging configuration information on the first downlink carrier of the first cell.
5. The method according to any one of claims 2 to 4, wherein the sending a random access message on the first uplink carrier comprises:

   The terminal sends the random access message to the second access network device on the first uplink carrier of the second cell according to the configuration information of the random access channel.
6. The method according to claim 1, wherein before the terminal detects the paging message on the first downlink carrier of the first cell, the method further comprises:

   When the first uplink carrier is deployed in the first cell on the first frequency layer, the terminal receives on the first downlink carrier the configuration information of the random access channel sent by the second access network device .
7. The method according to claim 6, wherein after the terminal receives on the first downlink carrier the configuration information of the random access channel sent by the second access network device, the method further comprises:

   The terminal receives, on the first downlink carrier, paging configuration information and identification information sent by the second access network device, where the identification information is a cell identification independent of the first cell.
8. The method according to claim 7, wherein the terminal detecting the paging message on the first downlink carrier of the first cell comprises:

   The terminal detects a paging message on the first downlink carrier according to the identification information and the paging configuration message.
9. The method according to claim 6 or 8, wherein the sending a random access message on the first uplink carrier comprises:

   The terminal sends the random access message to the second access network device on the first uplink carrier of the first cell according to the configuration information of the random access channel.
10. The method according to claim 1, wherein before the terminal detects the paging message on the first downlink carrier of the first cell, the method further comprises:

    The terminal receives, on the first downlink carrier, the configuration information of the random access channel sent by the second access network device.
11. The method according to claim 10, wherein after the terminal receives on the first downlink carrier the configuration information of the random access channel sent by the second access network device, the method further comprises:

    The terminal obtains a paging configuration message on the first downlink carrier, and the paging configuration message is used to detect the paging message.
12. The method according to claim 11, wherein the sending a random access message on the first uplink carrier comprises:

    The terminal sends the random access message to the second access network device on the first uplink carrier according to the configuration information of the random access channel, the random access message and the second access The identification information of the network access device is forwarded by the second access network device to the first access network device;

    Receiving, by the terminal, a first response message sent by the first access network device on the first downlink carrier, where the first response message includes uplink authorization information;

    The terminal sends a first message to the second access network device on the first uplink carrier according to the uplink authorization information, and the first message is forwarded by the second access network device to the second access network device. 1. Access network equipment;

    The terminal receives a second response message sent by the first access network device on the first downlink carrier, where the second response message includes a downlink data packet.
13. A method for triggering a random access process, characterized in that it comprises:

    The second access network device sends configuration information of a random access channel to the terminal, where the configuration information of the random access channel is used by the terminal to send a random access message on the first uplink carrier, and the first uplink carrier is deployed In the first cell on the first frequency layer or the second cell on the second frequency layer, the first frequency layer and the second frequency layer do not overlap, and the random access message is used for random access.
14. The method according to claim 13, wherein after the second access network device sends the configuration information of the random access channel to the terminal, the method further comprises:

    When the first uplink carrier is deployed in the second cell on the second frequency layer, the second access network device sends configuration signaling to the terminal on the first downlink carrier of the second cell, The configuration signaling carries configuration information of the first cell, the configuration information of the first cell includes paging configuration information, and the paging configuration information is used by the terminal to detect the paging message.
15. The method according to claim 14, wherein after the second access network device sends configuration signaling to the terminal on the first downlink carrier of the second cell, the method further comprises:

    The second access network device receives the random access message sent by the terminal on the first uplink carrier of the second cell.
16. The method according to claim 13, further comprising:

    When the first uplink carrier is deployed in the first cell on the first frequency layer, the second access network device sends a paging to the terminal on the first downlink carrier of the first cell Configuration information and identification information, where the identification information is a cell identification independent of the first cell, and the identification information and the paging configuration message are used by the terminal to detect a paging message.
17. The method according to claim 16, wherein after the second access network device sends paging configuration information and identification information to the terminal on the first downlink carrier of the first cell, the method further comprises :

    The second access network device receives the random access message sent by the terminal on the first uplink carrier of the first cell.
18. The method according to claim 13, wherein after the second access network device sends the configuration information of the random access channel to the terminal, the method further comprises:

    The second access network device receives the random access message sent by the terminal on the first uplink carrier, and obtains identification information;

    The second access network device forwards the random access message and the identification information to the first access network device;

    The second access network device receives the first message sent by the terminal on the first uplink carrier after the first access network device sends the first response message to the terminal;

    The second access network device forwards the first message to the first access network device, so that the first access network device sends a second response message to the terminal, the second response message Including downstream data packets.
19. A method for triggering a random access process, characterized in that it comprises:

    The first access network device sends a paging message to the terminal through the first downlink carrier of the first cell. The paging message is used by the terminal to determine that it is paged by the first access network device. The cell is deployed in the first frequency layer.
20. The method according to claim 19, wherein after the first access network device sends a paging message to the terminal through the first downlink carrier of the first cell, the method further comprises:

    The first access network device receives the random access message forwarded by the second access network device and the identification information of the second access network device, and the random access message is transmitted by the terminal on the first uplink carrier. send;

    The first access network device sends a first response message to the terminal on the first downlink carrier, where the first response message includes uplink authorization information, and the uplink authorization information is used by the terminal on the first downlink carrier. Sending a first message to the second access network device on an uplink carrier;

    Receiving, by the first access network device, the first message forwarded by the second access network device;

    The first access network device sends a second response message to the terminal on the first downlink carrier, where the second response message includes a downlink data packet.
21. A terminal for triggering a random access procedure, characterized in that it comprises:

    The detection unit is configured to detect a paging message on the first downlink carrier of the first cell, the paging message is sent by the first access network device through the first downlink carrier, and the first cell Deploy in the first frequency layer;

    The sending unit is configured to send a random access message on a first uplink carrier after determining that it is paged by the first access network device according to the paging message, and the first uplink carrier is deployed on the first frequency The first cell on the layer or the second cell on the second frequency layer, the first frequency layer and the second frequency layer do not overlap, and the random access message is used for random access.
22. The terminal according to claim 21, further comprising: a first receiving unit

    The first receiving unit is used for when the first uplink carrier is deployed in the second cell on the second frequency layer before the detection unit detects the paging message on the first downlink carrier of the first cell At this time, the first receiving unit receives the random access channel configuration information sent by the second access network device on the first downlink carrier of the second cell.
23. The terminal according to claim 22, further comprising: a first obtaining unit,

    The first receiving unit is further configured to: after receiving, on the first downlink carrier of the second cell, the configuration information of the random access channel sent by the second access network device, in the first cell of the second cell Receiving, on a downlink carrier, configuration signaling sent by the second access network device, where the configuration signaling carries cell configuration information of the first cell;

    The first obtaining unit is configured to obtain paging configuration information from the cell configuration information of the first cell;

    The detecting unit is configured to detect the paging message on the first downlink carrier of the first cell according to the paging configuration information acquired by the first acquiring unit.
24. The terminal according to claim 21, further comprising: a second acquiring unit,

    The detection unit is further configured to detect the synchronization signal of the first cell to obtain the cell identity of the first cell;

    The second acquiring unit is configured to read paging configuration information according to the cell identity of the first cell;

    The detecting unit is configured to detect the paging message on the first downlink carrier of the first cell according to the paging configuration information acquired by the second acquiring unit.
25. The terminal according to any one of claims 22 to 24, characterized in that:

    The sending unit is configured to send the random access channel to the second access network device on the first uplink carrier of the second cell according to the configuration information of the random access channel received by the first receiving unit Access message.
26. The terminal according to claim 21, further comprising: a second receiving unit,

    The second receiving unit is configured to, before the detecting unit detects the paging message on the first downlink carrier of the first cell, when the first uplink carrier is deployed on the first frequency layer. When the cell is in a cell, receiving the configuration information of the random access channel sent by the second access network device on the first downlink carrier.
27. The terminal according to claim 26, wherein:

    The second receiving unit is further configured to receive, on the first downlink carrier, the first downlink carrier after receiving the random access channel configuration information sent by the second access network device. 2. Paging configuration information and identification information sent by the access network device, where the identification information is a cell identification independent of the first cell.
28. The terminal according to claim 27, wherein:

    The detection unit is configured to detect a paging message on the first downlink carrier according to the identification information and the paging configuration message received by the second receiving unit.
29. The terminal according to claim 25 or 28, wherein the sending unit is configured to transmit data on the first uplink carrier of the first cell according to the random access channel received by the second receiving unit. The configuration information sends the random access message to the second access network device.
30. The terminal according to claim 21, further comprising: a third receiving unit,

    The third receiving unit is configured to receive, on the first downlink carrier, the random access sent by the second access network device before the detecting unit detects the paging message on the first downlink carrier of the first cell. Incoming channel configuration information.
31. The terminal according to claim 30, further comprising: a third acquiring unit,

    The acquiring unit is configured to, after the third receiving unit receives, on the first downlink carrier, the configuration information of the random access channel sent by the second access network device, obtain the paging on the first downlink carrier A configuration message, where the paging configuration message is used to detect the paging message.
32. The terminal according to claim 31, wherein:

    The sending unit is configured to send the random access message to the second access network device on the first uplink carrier according to the configuration information of the random access channel received by the third receiving unit, The random access message and the identification information of the second access network device are forwarded by the second access network device to the first access network device;

    The third receiving unit is configured to receive a first response message sent by the first access network device on the first downlink carrier, where the first response message includes uplink authorization information;

    The sending unit is configured to send a first message to the second access network device on the first uplink carrier according to the uplink authorization information received by the third receiving unit, where the first message is sent by the first uplink carrier. The second access network device forwards to the first access network device;

    The third receiving unit is configured to receive a second response message sent by the first access network device on the first downlink carrier, where the second response message includes a downlink data packet.
33. A second access network device for triggering a random access process, characterized in that it comprises:

    The sending unit is configured to send configuration information of a random access channel to a terminal, where the configuration information of the random access channel is used by the terminal to send a random access message on a first uplink carrier, and the first uplink carrier is deployed on The first cell on the first frequency layer or the second cell on the second frequency layer, where the first frequency layer and the second frequency layer do not overlap, and the random access message is used for random access.
34. The second access network device according to claim 33, wherein:

    The sending unit is further configured to: after sending the configuration information of the random access channel to the terminal, when the first uplink carrier is deployed in the second cell on the second frequency layer, in the first cell of the second cell The configuration signaling is sent to the terminal on the downlink carrier, the configuration signaling carries configuration information of the first cell, the configuration information of the first cell includes paging configuration information, and the paging configuration information is used for all The terminal detects the paging message.
35. The second access network device according to claim 34, further comprising: a first receiving unit,

    The first receiving unit is configured to receive the terminal on the first uplink carrier of the second cell after the sending unit sends the configuration signaling to the terminal on the first downlink carrier of the second cell The random access message sent.
36. The second access network device according to claim 33, wherein:

    The sending unit is further configured to send a paging to the terminal on the first downlink carrier of the first cell when the first uplink carrier is deployed in the first cell on the first frequency layer Configuration information and identification information, where the identification information is a cell identification independent of the first cell, and the identification information and the paging configuration message are used by the terminal to detect a paging message.
37. The second access network device according to claim 36, further comprising: a second receiving unit,

    The second receiving unit is configured to transmit the paging configuration information and identification information to the terminal on the first downlink carrier of the first cell, and then perform the first uplink of the first cell. Receiving the random access message sent by the terminal on a carrier.
38. The second access network device according to claim 33, further comprising: a third receiving unit and a forwarding unit,

    The third receiving unit is configured to receive the random access message sent by the terminal on the first uplink carrier after the sending unit sends the configuration information of the random access channel to the terminal, and obtain identification information;

    The forwarding unit is configured to forward the random access message and the identification information received by the third receiving unit to the first access network device;

    The third receiving unit is configured to receive the first message sent by the terminal on the first uplink carrier after the first access network device sends the first response message to the terminal;

    The forwarding unit is configured to forward the first message received by the third receiving unit to the first access network device, so that the first access network device sends a second response message to the terminal , The second response message includes a downlink data packet.
39. A first access network device for triggering a random access process, characterized in that it comprises:

    The sending unit is configured to send a paging message to the terminal through the first downlink carrier of the first cell, where the paging message is used for the terminal to determine to be paged, and the first cell is deployed in the first frequency layer.
40. The first access network device according to claim 39, further comprising: a receiving unit,

    The receiving unit is configured to receive the random access message forwarded by the second access network device and the second access after the sending unit sends a paging message to the terminal through the first downlink carrier of the first cell Identification information of the network equipment, the random access message is sent by the terminal on the first uplink carrier;

    The sending unit is configured to send a first response message to the terminal on the first downlink carrier, where the first response message includes uplink authorization information, and the uplink authorization information is used by the terminal on the first downlink carrier. Sending a first message to the second access network device on an uplink carrier;

    The receiving unit is configured to receive the first message forwarded by the second access network device;

    The sending unit is configured to send a second response message to the terminal on the first downlink carrier, where the second response message includes a downlink data packet.
41. A computer-readable storage medium, comprising instructions, characterized in that, when the instructions are executed on an electronic device, the electronic device is caused to execute the method according to any one of claims 1-12.
42. A computer-readable storage medium, comprising instructions, wherein when the instructions run on an electronic device, the electronic device is caused to execute the method according to any one of claims 13-18.
43. A computer-readable storage medium, comprising instructions, wherein when the instructions run on an electronic device, the electronic device is caused to execute the method according to any one of claims 19-20.
44. A computer program product, comprising instructions, characterized in that, when the instructions are run on a computer, the computer executes the method according to any one of claims 1-12.
45. A computer program product, comprising instructions, characterized in that, when the instructions run on a computer, the computer executes the method according to any one of claims 13-18.
46. A computer program product, comprising instructions, characterized in that, when the instructions run on a computer, the computer executes the method according to any one of claims 19-20.

Images