CN110121203B

CN110121203B - Communication method and communication device

Info

Publication number: CN110121203B
Application number: CN201810365125.2A
Authority: CN
Inventors: 黎建辉; 杜振国; 庄宏成
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-02-05
Filing date: 2018-04-18
Publication date: 2020-12-04
Anticipated expiration: 2038-04-18
Also published as: CN110121203A

Abstract

The application provides a communication method and a communication device, which are applied to a communication system comprising terminal equipment and network equipment, wherein the terminal equipment comprises a wake-up radio frequency interface and a main interface, the terminal equipment is positioned in at least one TA in a plurality of tracking areas TA controlled by a mobility management entity MME, and the method comprises the following steps: the method comprises the steps that network equipment sends a first message to terminal equipment, wherein the first message is used for triggering and awakening a radio frequency interface to generate a trigger signal, the first message carries a first identifier, the first identifier is an identifier of the terminal equipment in a TA control range included in a first TA list, the length of the first identifier is smaller than that of a second identifier, and the second identifier is a unique identifier of the terminal equipment in an MME control range; the network equipment sends the first data to the terminal equipment, the format of the first data is the format matched with the main interface, the bit number required by the low-power consumption equipment can be reduced, the bearing characteristics of the wake-up frame are adapted, and the design of the multi-equipment wake-up frame is more flexible.

Description

Communication method and communication device

The present application claims priority from a chinese patent application filed by the chinese patent office on 2018, month 02, 05, having application number 201810111495.3 entitled "a method of identifying low power consumption devices," the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of communications, and more particularly, to a method and apparatus for identifying low power devices.

Background

Wake-up Radio (WUR), also called Wake-up Receiver (WUR), refers to that a terminal device introduces a WUR interface based on configuring a traditional main Radio interface (main Radio) or also called a main module. The master module is normally in an off state, and is activated only when a trigger signal is received from the WUR module, and then performs data communication with the base station through the master module. The 3rd Generation partnership Project (3 GPP) standards organization has introduced low power WURs to reduce The power consumption of terminal devices. The Signal that can be received and decoded by the WUR of the terminal device is called wake-up Signal (Wakeup Signal), and the reception and decoding of the wake-up Signal are much simpler than those of the conventional main interface Signal, so that the terminal device can reduce power consumption compared with the case of receiving the Signal by using the main module by using the WUR.

For a terminal device configured with a WUR interface, when no data is sent to the terminal device by a base station and the terminal device has no data transmission, a main communication interface of the terminal device is in a closed state, and the WUR interface is in an active state or an intermittent active state. When the base station has data to send to the terminal device, a wake-up frame is first sent to the WUR interface of the terminal device, so that the terminal device wakes up its own main communication interface. The wake-up frame should include an identifier ID of the terminal device, and only when the terminal device detects that the target ID of the wake-up frame matches itself, the terminal device wakes up its own main communication interface.

Because the modulation order of WUS is low and the reliability requirement is high, the amount of information that can be carried by the wake-up frame may be limited. In addition, in an application scenario of multi-device wake-up, the wake-up frame may also carry IDs of multiple devices. Thus, a longer device identification may not be suitable for carrying in the wake-up frame.

Disclosure of Invention

The application provides a communication method and a communication device, and provides a low-power-consumption equipment short identifier which can identify low-power-consumption equipment so as to reduce the number of bits required for identifying the low-power-consumption equipment.

In a first aspect, a communication method is provided, which is applied in a communication system including a terminal device and a network device, where the terminal device includes a wake-up radio frequency interface and a main interface, the wake-up radio frequency interface is configured to generate a trigger signal, the trigger signal is used to activate the main interface, the main interface is used for communication between the terminal device and the network device, and the terminal device is located in at least one of a plurality of tracking areas TA controlled by a mobility management entity MME, and the method includes:

the network device sends a first message to the terminal device through the wake-up radio frequency interface, where the first message is used to trigger the wake-up radio frequency interface to generate the trigger signal, and the first message carries a first identifier, where the first identifier is an identifier of the terminal device in a control range of a TA included in a first TA list, the first TA list includes at least one TA of the multiple TAs, and the length of the first identifier is smaller than that of the second identifier, and the second identifier is a unique identifier of the terminal device in the control range of the MME;

the network equipment receives first data sent by the network equipment, and the format of the first data is matched with that of the main interface.

It should be understood that, in the embodiment of the present application, the network device sends the wake frame WUS to the wake radio WUR of the terminal device, based on the first communication mode, that is, the data format of the WUS is that the wake radio WUR of the terminal device can identify and acquire the wake frame WUS. Such a communication scheme ensures that interfaces other than the WUR do not misconnect the wakeup frame WUS.

The network equipment sends a wakeup frame WUS to a wakeup radio frequency WUR of the terminal equipment based on the first communication mode, and the WUS activates the WUR to generate a trigger signal and activates a main interface of the terminal equipment. The network device may then communicate with the terminal device time. For example, the network device sends first data to the terminal device, and the terminal device receives the first data through the main interface, and such communication process is performed based on the second communication mode. I.e. the format of the first data is a data format that can be received and recognized by the main interface of the terminal device.

In particular, one MME may control a plurality of tracking areas TA, at least one of which the terminal device is located. The network device assigns the WU-TMSI to the UE on the network, and the WU-TMSI is the device identification in the TA or the TA list. The TA list of the present application includes at least one TA of the plurality of TAs controlled by one MME. For example, when the TA list includes 5 TAs, and the 5 TAs are controlled by the same MME, the WU-TMSI is the identity within the 5 TAs; when the TA list includes 1 TA, then the WU-TMSI is the unique identifier within that TA.

According to the technical scheme, the network equipment allocates the low-power-consumption equipment short identifier for the low-power-consumption terminal equipment, and the short identifier is used for communication between the low-power-consumption equipment and the network equipment. When the network equipment needs to send the wake-up frame to wake up the low-power-consumption equipment to communicate with the network equipment, the short identifier is carried in the wake-up frame WUS, so that the bit number required by identifying the low-power-consumption equipment can be reduced, and meanwhile, the space saved by the low-power-consumption equipment short identifier compared with a complete long identifier enables the design of the multi-equipment wake-up frame to be more flexible and can adapt to the characteristic that the number of bearing bits of the wake-up frame WUS is limited.

With reference to the first aspect, in certain implementations of the first aspect, the first identifier is generated based on the second identifier.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the sequence of the first identifier is intercepted from the sequence of the second identifier, or

The sequence of the first identifier is generated after the sequence of the second identifier is transformed based on a preset function.

It should be understood that the generation of the first identifier may be completed by the network device and sent to the terminal device, or may also be a parameter or a function generated by the terminal device receiving the first identifier sent by the network device, and the terminal device generates the first identifier, which is included in the embodiments of the present application, but is not limited to this.

For example, an 8-bit MMEC and a 32-bit MME temporary mobile subscriber identity M-TMSI constitute a 40-bit serving temporary mobile subscriber identity S-TMSI, and the first 24bits of the S-TMSI can be intercepted, so there is a WU-TMSI-MMEC + Partial M-TMSI.

For the WU-TMSI generation scheme, the original general ID construction mode is inherited, namely the WU-TMSI construction mode is as follows: management area + in-area ID. The method has the advantage of facilitating the tracking of the terminal equipment by the core network equipment MME based on the MME. However, the fact that the Partial M-TMSI domain has only 16bits means that up to 65536 packets (including one or more terminal devices in a group) can be made to terminal devices under the same MME.

Alternatively, the last 24bits of the S-TMSI may be truncated, so that WU-TMSI is Partial M-TMSI.

For the WU-TMSI generation scheme described above, 24bits of WU-TMSI are all taken to be M-TMSI, i.e., the in-region ID. The randomness of the ID is higher. In other words, for a terminal device, the probability of WU-TMSI duplication is smaller in TA list, i.e., the probability of false wake-up is much smaller.

It should be understood that the truncated 24bits are merely exemplary, and the present solution includes, but is not limited to, this.

Alternatively, the base station may use 1-bit indication information to indicate whether the terminal device uses the front-end interception or the back-end interception, and use 5-bits indication information to indicate how many bits are intercepted. When the base station needs to wake up the terminal equipment in the wake-up frame WUS, the base station directly carries the WU-TMSI in the ID field of the target terminal equipment. When the terminal device detects that the ID field of the target terminal device in the WUS is the same as the WU-TMSI of the terminal device, the terminal device immediately wakes up the main communication interface to communicate with the base station.

Optionally, the sequence of the first identifier is generated after a transformation process is performed on the sequence of the S-TMSI or the M-TMSI.

For example, one embodiment of the transformation process is divided into two steps: 1. intercepting a bit string for S-TMSI or M-TMSI; 2. the bit string is scrambled using the MMEC and/or TAC. Here, TAC refers to an ID of the tracking area TA.

Specifically, the following steps may be performed.

In the first step, the S-TMSI or M-TMSI is intercepted in a manner to obtain a bit string.

And secondly, carrying out dislocation XOR operation on the obtained bit String, the MMEC String and the TAC String to obtain the WU-TMSI.

In practical application, the bit number and position of the truncation can be flexibly changed.

According to the scheme, the WU-TMSI is obtained by carrying out exclusive OR operation on a bit string obtained by partially intercepting an S-TMSI or an M-TMSI and then carrying out exclusive OR operation on the bit string, MMEC and TAC. Because the MMEC and the TAC have geographic location characteristics, after scrambling the bit string obtained by partially intercepting the S-TMSI or the M-TMSI by using the MMEC and the TAC bit string, further randomizing the directly intercepted bit string.

With reference to the first aspect and the foregoing implementations, in some possible implementations, the sequence of the first identifier is generated based on a random generation function.

That is, the base station can generate the WU-TMSI using an arbitrary sequence random generation function and configure it to the terminal device. If the base station and the terminal equipment both know the concrete expression of the sequence random generation function, the base station can also configure the parameters of the sequence random generation function for the terminal equipment, and the terminal equipment generates the WU-TMSI locally at the terminal equipment.

In summary, there are many possible implementations of generating the first identification sequence, and the embodiments of the present application include, but are not limited to, this.

The scheme provides a short identification WU-TMSI suitable for low-power consumption equipment, so that the number of bits required by identification terminal equipment is reduced, and the short identification WU-TMSI is more suitable for WUS awakening frames carrying bits with limited length. The space saved by the short identifier of the low-power-consumption device compared with the complete long identifier enables the design of the multi-device wake-up frame to be more flexible and can adapt to the characteristic that the number of bearing bits of the wake-up frame is limited.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, before the network device sends the first message to the terminal device, the method further includes:

the network device generates the first identifier;

and the network equipment sends the indication information of the first identifier to the terminal equipment.

and the network equipment receives the indication information of the first identifier sent by the terminal equipment.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the second identifier is a temporary mobile subscriber identity, M-TMSI, or S-TMSI, of a mobility management network element of the terminal device.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the network device is an access network device or a mobility management entity MME.

It will be appreciated that the length of the first identity WU-TMSI is less than the length of the current M-TMSI, 32bits, and the length of the WU-TMSI is greater than or equal to the length of the current C-RNTI, 16 bits. Obviously, if the length of the WU-TMSI is larger than the M-TMSI, the WUS only needs to carry the M-TMSI.

And when the terminal equipment is in a connected state, the first identifier is a cell radio network temporary identifier (C-RNTI) of the terminal equipment. Since the C-RNTI is 16bits when the terminal equipment is in a connected state, the C-RNTI is most convenient to be used as the identifier of the terminal equipment.

It should be appreciated that for terminal devices in the IDLE state RRC _ IDLE, the target terminal device in the WUS is identified as WU-TMSI; for the terminal device in the RRC _ CONNECTED state, the target terminal device identifier in the WUS is a cell-level unique identifier of the terminal device, such as C-RNTI. Because the terminal device is in what state, both the network side and the terminal device side know, and accordingly, what kind of target terminal device identifier should be sent by the network side and what kind of target terminal device identifier should be received by the terminal device are also naturally clear and unmistakable. Therefore, this method can shorten the information bit length in the WUS in the RRC _ CONNECTED state, and does not cause ambiguity when the base station transmits the WUS and the terminal device receives the WUS. However, since there are two WUS lengths, the base station should support transmission of the two lengths WUS, the terminal device should support reception of the two lengths WUS,

further, the first identity may be generated by the MME, in which case the MME generates the first identity in any of the possible ways described above. For example, first, the terminal device sends an identity request message, or a TA update message, to the network device requesting the network device to allocate a low power consumption device identity WU-TMSI to the terminal device. Secondly, the MME receives the request message and generates the first identity WU-TMSI. Then, the MME allocates the first identifier to the terminal device, and specifically, the allocated first identifier may be configured to the terminal device in a manner of radio resource control signaling RRC or media access control layer signaling MAC CE, or the like.

In a second aspect, a communication method is provided, which is applied in a communication system including a terminal device and a network device, where the terminal device includes a wake-up radio frequency interface and a main interface, the wake-up radio frequency interface is configured to generate a trigger signal, the trigger signal is used to activate the main interface, the main interface is used for communication between the terminal device and the access network device, and the terminal device is located in at least one TA of a plurality of tracking areas TAs controlled by a mobility management entity MME, and the method includes:

the terminal device receives a first message through the wakeup radio frequency interface, where the first message is used to trigger the wakeup radio frequency interface to generate the trigger signal, and the first message carries a first identifier, where the first identifier is an identifier of the terminal device in a control range of a TA included in a first TA list, the first TA list includes at least one TA of the multiple TAs, and the length of the first identifier is smaller than that of the second identifier, and the second identifier is a unique identifier of the terminal device in the control range of the MME;

after the terminal equipment determines that the first message is valid according to the first identifier, the terminal equipment controls the awakening radio frequency interface to generate a trigger signal according to the first message so as to activate the main interface;

the terminal equipment receives first data sent by the network equipment through the main interface, and the format of the first data is matched with that of the main interface.

It is to be understood that one MME may control a plurality of tracking areas TA, the terminal device being located within at least one tracking area TA. The network device assigns the WU-TMSI to the UE on the network, and the WU-TMSI is the device identification in the TA or the TA list. The TA list of the present application includes at least one TA of the plurality of TAs controlled by one MME. For example, when the TA list includes 5 TAs, and the 5 TAs are controlled by the same MME, the WU-TMSI is the identity within the 5 TAs; when the TA list includes 1 TA, then the WU-TMSI is the unique identifier within that TA.

According to the technical scheme, the network equipment allocates the low-power-consumption equipment short identifier for the low-power-consumption terminal equipment, and the short identifier is used for communication between the low-power-consumption equipment and the network equipment. When the network equipment needs to send the wakeup frame WUS to wake up the low-power consumption equipment to communicate with the network equipment, the short identifier is carried in the wakeup frame WUS, so that the bit number required by identifying the low-power consumption equipment can be reduced, and meanwhile, the space saved by the short identifier of the low-power consumption equipment compared with the complete long identifier is saved, so that the design of the multi-equipment wakeup frame is more flexible, and the characteristics of limited number of bearing bits of the wakeup frame WUS can be adapted.

With reference to the second aspect, in some possible implementations, the first identifier is generated based on the second identifier.

With reference to the second aspect and the foregoing implementation manner, in some possible implementation manners, the sequence of the first identifier is intercepted from the sequence of the second identifier, or

With reference to the second aspect and the foregoing implementations, in some possible implementations, the sequence of the first identifier is generated based on a random generation function.

For example, an 8-bit MMEC and a 32-bit sM-TMSI form a 40-bit S-TMSI, the first 24bits of the S-TMSI can be truncated, and WU-TMSI is MMEC + Partial M-TMSI.

Specifically, the following steps may be performed.

The scheme provides a short identification WU-TMSI suitable for low-power consumption equipment, so that the number of bits required by identification terminal equipment is reduced, and the short identification WU-TMSI is more suitable for WUS awakening frames carrying bits with limited length. The space saved by the short identifier of the low-power-consumption device compared with the complete long identifier enables the design of the multi-device wake-up frame to be more flexible.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, before the terminal device receives the first message through the wake-up radio frequency interface, the method further includes:

the terminal equipment generates the first identification;

the terminal device sends the indication information of the first identifier to the network device.

the terminal device receives the indication information of the first identifier sent by the network device.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, when the terminal device is in a connected state, the first identifier is a cell radio network temporary identifier C-RNTI of the terminal device.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the second identifier is a mobility management network element temporary mobile subscriber identity M-TMSI or a serving temporary mobile subscriber identity S-TMSI of the terminal device.

In a third aspect, a communication apparatus is provided, which may be an access network device or a core network device and is configured in a communication system including a terminal device, where the terminal device includes a wake-up radio frequency interface and a main interface, the wake-up radio frequency interface is configured to generate a trigger signal, the trigger signal is used to activate the main interface, the main interface is used for communication between the terminal device and the communication apparatus, and the terminal device is located in at least one of a plurality of tracking areas TA controlled by the core network device. The communication device includes:

a communication unit, configured to send a first message to the terminal device through the wake-up radio frequency interface, where the first message is used to trigger the wake-up radio frequency interface to generate the trigger signal, and the first message carries a first identifier, where the first identifier is an identifier of the terminal device in a first TA list, the first TA list includes at least one TA of the multiple TAs, and a length of the first identifier is smaller than a length of the second identifier, and the second identifier is a unique identifier of the terminal device in the MME control range;

and the processing unit is used for communicating with the terminal equipment through the main interface after the terminal equipment controls the awakening radio frequency interface to generate a trigger signal to activate the main interface according to the first message.

Optionally, the first identity is generated based on the second identity.

Specifically, the sequence of the first identifier is obtained by intercepting the sequence of the second identifier, or the sequence of the first identifier is generated by transforming the sequence of the second identifier based on a preset function.

Optionally, the sequence of first identifiers is generated based on a random generating function.

For the specific generation process of the first identifier, reference is made to the foregoing description, and details are not described herein for simplicity. It should be understood that the generation of the first identifier may be performed by the processing unit of the communication apparatus, or the communication unit may receive the first identifier sent by the terminal device, which includes but is not limited to this application.

As a possible implementation manner, before the communication unit sends the first message to the terminal device through the wake-up radio frequency interface, the processing unit generates the first identifier; the communication unit transmits the indication information of the first identifier to the terminal device.

In another possible implementation manner, before the communication unit sends the first message to the terminal device through the wake-up radio frequency interface, the communication unit receives indication information of the first identifier sent by the terminal device.

Optionally, the second identifier is a mobility management network element temporary mobile subscriber identity M-TMSI or a serving temporary mobile subscriber identity S-TMSI of the terminal device.

In another possible implementation manner, the communication device is an access network device or a mobility management entity MME.

In a fourth aspect, a communication apparatus is provided, which may be a terminal device, the terminal device including a wake-up radio frequency interface and a main interface, the wake-up radio frequency interface being configured to generate a trigger signal, the trigger signal being configured to activate the main interface, the main interface being configured to be used for communication between the terminal device and the access network device, the terminal device being located in at least one of a plurality of tracking areas TA controlled by a mobility management entity MME, the method including:

a communication unit, configured to receive a first message through the wake-up radio frequency interface, where the first message is used to trigger the wake-up radio frequency interface to generate the trigger signal, and the first message carries a first identifier, where the first identifier is an identifier of the terminal device in a first TA list, the first TA list includes at least one TA of the multiple TAs, and a length of the first identifier is smaller than a length of the second identifier, and the second identifier is a unique identifier of the terminal device in a control range of the MME;

the processing unit is used for controlling the awakening radio frequency interface to generate a trigger signal according to the first message after the first message is determined to be valid according to the first identifier so as to activate the main interface;

the communication unit is also used for communicating with the network equipment through the main interface.

Optionally, the first identity is generated based on the second identity.

For the specific generation process of the first identifier, reference is made to the foregoing description, and details are not described herein for simplicity. It should be understood that the generation of the first identifier may be performed by the processing unit of the communication apparatus, or the communication unit may receive the first identifier sent by the network device, which includes but is not limited to this application.

As a possible implementation manner, before the communication unit receives the first message through the wake-up radio frequency interface, the method further includes: the terminal equipment generates the first identification; the terminal device sends the indication information of the first identifier to the network device.

In another possible implementation manner, before the communication unit receives the first message through the wake-up radio frequency interface, the method further includes: the terminal device receives the indication information of the first identifier sent by the network device.

Optionally, when the terminal device is in a connected state, the first identifier is a cell radio network temporary identifier C-RNTI of the terminal device.

Optionally, the second identifier is a temporary mobile subscriber identity M-TMSI or S-TMSI of a mobility management network element of the terminal device.

The processing unit may determine the state of the communication device, for example, when the processing unit determines whether the communication device is in a CONNECTED state RRC _ CONNECTED or an IDLE state RRC _ IDLE. The processing unit takes the low power short identifier WU-TMSI as the target terminal device identifier in the WUs, regardless of the CONNECTED RRC _ CONNECTED or IDLE RRC _ IDLE state. The identification method can enable the awakening frame WUS to carry information with short and fixed bit length, and simplifies the design of a data structure in the WUS.

Or when the processing unit judges that the communication device is in the RRC _ IDLE state, the processing unit identifies the target terminal equipment in the WUS as the WU-TMSI; when the processing unit judges that the communication device is in the RRC _ CONNECTED state, the processing unit identifies the target terminal equipment in the WUS as the cell-level unique identification of the terminal equipment, such as C-RNTI.

This method can shorten the information bit length in the WUS in the RRC _ CONNECTED state and does not cause ambiguity when the base station transmits a WUS and the terminal device receives a WUS. Since there are two WUS lengths, the base station should support transmission of the two length WUS, and the terminal device should support reception of the two length WUS.

In a fifth aspect, a network device is provided that includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver to transmit and receive signals, the memory is configured to store a computer program, and the processor is configured to call and execute the computer program from the memory, so that the network device performs the method in any one of the first aspect and any one of the possible implementation manners of the first aspect.

In a sixth aspect, a terminal device is provided that includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver to transmit and receive signals, the memory is configured to store a computer program, and the processor is configured to call and run the computer program from the memory, so that the terminal device performs the method in any one of the second aspect and any one of the possible implementation manners of the second aspect.

In a seventh aspect, a communication apparatus is provided, where the communication apparatus may be a network device designed by the method described above, or a chip disposed in the network device. The communication device includes: a processor, coupled to the memory, and configured to execute the instructions in the memory to implement the method performed by the network device in the first aspect and any one of the possible implementations of the first aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface.

In an eighth aspect, a communication device is provided, which may be the terminal device in the method design or a chip provided in the terminal device. The communication device includes: a processor, coupled to the memory, and configured to execute the instructions in the memory to implement the method performed by the terminal device in any possible implementation manner of the second aspect and the second aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface.

In a ninth aspect, a network entity is provided, which may be a network entity in a core network, such as a mobility management entity, MME, or a gateway (such as a serving gateway, SGW, and/or a packet data gateway, PGW). The network entity may also be a network entity in the information management system IMS. The network entity is configured to identify a service type of the UE and notify the base station of the identified UE service information, so as to support the UE and the base station to implement the scheme designed in the first aspect and the second aspect of the communication method in a cooperative manner.

A tenth aspect provides a communication system, where the system includes the network device (e.g., a base station or a mobility management network element MME) in any one of the foregoing possible implementations of the third aspect and the third aspect, and the terminal device UE in any one of the possible implementations of the fourth aspect and the fourth aspect; alternatively, the system comprises the base station of the third aspect and the network entity of the ninth aspect; alternatively, the system comprises the UE of the fourth aspect, the base station of the third aspect, and the network entity of the ninth aspect.

In an eleventh aspect, there is provided a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method of the above-mentioned aspects.

In a twelfth aspect, a computer-readable medium is provided, which stores program code, which, when run on a computer, causes the computer to perform the method of the above-mentioned aspects.

In a thirteenth aspect, a chip system is provided, which comprises a processor for enabling a terminal device to implement the functions referred to in the above aspects, such as generating, receiving, determining, sending, or processing data and/or information referred to in the above methods. In one possible design, the system-on-chip further includes a memory for storing program instructions and data necessary for the terminal device. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

In a fourteenth aspect, a chip system is provided, which includes a processor for enabling a network device to implement the functions recited in the above aspects, such as generating, receiving, determining, sending, or processing data and/or information recited in the above methods. In one possible design, the system-on-chip further includes a memory for storing program instructions and data necessary for the terminal device. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system provided in an embodiment of the present application.

Fig. 2 is a schematic interface diagram of a terminal device and a network device according to an embodiment of the present application.

Fig. 3 is a schematic diagram of a wake-up signal transmission cycle according to an embodiment of the present disclosure.

Fig. 4 is a schematic diagram illustrating an example of a structure of a terminal device identifier according to an embodiment of the present application.

Fig. 5 is a schematic flowchart of an example of a communication method according to an embodiment of the present application.

Fig. 6 is an interaction diagram of an example communication method according to an embodiment of the present application.

Fig. 7 is a schematic diagram illustrating an example of terminal device identifier generation according to an embodiment of the present application.

Fig. 8 is a schematic diagram of generation of a further example of a terminal device identifier according to an embodiment of the present application.

Fig. 9 is a schematic diagram of further example of terminal device identifier generation according to an embodiment of the present application.

Fig. 10 is an interaction diagram of another example of a communication method provided in the embodiment of the present application.

Fig. 11 is an interaction diagram of another communication method provided in the embodiment of the present application.

Fig. 12 is a schematic block diagram of an example of a communication apparatus according to an embodiment of the present application.

Fig. 13 is another exemplary schematic block diagram of a communication device provided in an embodiment of the present application.

Fig. 14 is a schematic structural diagram of an example of a terminal device according to an embodiment of the present application.

Fig. 15 is a schematic structural diagram of another example of the terminal device according to the embodiment of the present application.

Fig. 16 is a schematic structural diagram of an example of a network device according to an embodiment of the present application.

Fig. 17 is a schematic structural diagram of another example of a network device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

It should be understood that the manner, the case, the category, and the division of the embodiments are only for convenience of description and should not be construed as a particular limitation, and features in various manners, the category, the case, and the embodiments may be combined without contradiction.

It should also be understood that "first", "second", and "third" in the embodiments of the application are merely for distinction and should not constitute any limitation to the application.

It should also be understood that, in the various embodiments of the present application, the sequence numbers of the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the inherent logic of the processes, and should not constitute any limitation to the implementation process of the embodiments of the present application.

It should be noted that in the implementation of the present application, the "protocol" may refer to a standard protocol in the field of communications, and may include, for example, an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in the present application.

It should be further noted that, in the embodiment of the present application, the "predefined" may be implemented by saving a corresponding code, table, or other means that can be used to indicate related information in advance in a device (for example, including a terminal device and a network device), and the present application is not limited to a specific implementation manner thereof. For example, the predefined may refer to a definition in a protocol.

It should be noted that, in the embodiments of the present application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand the meaning. Information (information), signal (signal), message (message), channel (channel) may sometimes be mixed, it should be noted that the intended meaning is consistent when the distinction is not emphasized. "of", "corresponding", and "corresponding" may sometimes be used in combination, it being noted that the intended meaning is consistent when no distinction is made.

It should be noted that, in the embodiments of the present application, "reporting" and "feedback" are often used interchangeably, but those skilled in the art can understand the meaning thereof. For the terminal device, reporting CSI and feeding back CSI may both be CSI transmitted through a physical uplink channel. Therefore, in the embodiments of the present application, the intended meanings thereof are consistent when the differences are not emphasized.

It should be further noted that "and/or" describes an association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one" means one or more than one; "at least one of a and B", similar to "a and/or B", describes an association relationship of associated objects, meaning that three relationships may exist, for example, at least one of a and B may mean: a exists alone, A and B exist simultaneously, and B exists alone. The technical solution provided by the present application will be described in detail below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, a future fifth Generation (5G) System, or a New Radio Network (NR), etc.

Fig. 1 is a schematic diagram of a wireless communication system 100 suitable for use with embodiments of the present application. For the convenience of understanding the embodiments of the present application, a communication system applicable to the embodiments of the present application will be first described in detail by taking the communication system 100 shown in fig. 1 as an example. As shown in fig. 1, the wireless communication system 100 may include one or more access network devices, such as the access network device 110 shown in fig. 1; the wireless communication system 100 may also include one or more terminal devices, such as terminal device 120, terminal device 130, and terminal device 140 shown in fig. 1; the wireless communication system 100 may also include a core network device, such as the core network device 130 shown in fig. 1. The wireless communication system 100 may support Coordinated Multiple Points Transmission (CoMP), that is, Multiple cells or Multiple network devices may cooperate to participate in data Transmission of one terminal device or jointly receive data sent by one terminal device, or Multiple cells or Multiple network devices perform cooperative scheduling or cooperative beamforming. Wherein the plurality of cells may belong to the same network device or different network devices and may be selected according to channel gain or path loss, received signal strength, received signal order, etc.

The access network equipment is a network element in the access network. In the communication system 100, the access network device 110 may be a device for communicating with a mobile device, and it should be understood that the access network device 110 may be any device having a wireless transceiving function or a chip provided to the device, and the device includes but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home evolved NodeB, or Home Node B, HNB), BaseBand Unit (Base band Unit, BBU), Access Point (AP) in Wireless Fidelity (WIFI) system, etc., and may also be 5G, such as NR, gbb in system, or TRP, transmission Point (TRP or TP), one or a group of antennas (including multiple antennas, NB, or a transmission panel) of a Base Station in 5G system, such as a baseband unit (BBU), or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may also include a Radio Unit (RU). The CU implements part of the function of the gNB, and the DU implements part of the function of the gNB, for example, the CU implements Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP) layers, and the DU implements Radio Link Control (RLC), Medium Access Control (MAC) and Physical (PHY) layers. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as RRC layer signaling or PHCP layer signaling, may also be considered to be transmitted by the DU or by the DU + RU under this architecture. It is to be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into Network devices in an access Network RAN, or may be divided into Network devices in a Core Network (CN), which is not limited herein.

In addition, in this embodiment of the present application, the access network device provides a service for a cell, and the terminal device communicates with the access network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the access network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), Micro cells (Micro cells), Pico cells (Pico cells), Femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.

The core network device 130 may be connected to a plurality of access network devices, and configured to control the access network devices, and may distribute data received from a network side (e.g., the internet) to the access network devices, for example, in an embodiment of the present application, the core network device may be a network element (MME) responsible for Mobility Management, and the present application is not limited thereto.

In this embodiment of the present application, the network device may include an access network device 110 or a core network device 130, and this embodiment of the present application mainly relates to communication and interaction between a terminal device and the network device, and for convenience of description, the access network device and the core network device are collectively referred to as the network device herein, or in a specific interaction description, are also described as the access network device and the core network device, respectively.

The terminal equipment 120 in the wireless communication system 100 may also be referred to as User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical treatment (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios. The terminal device and the chip that can be installed in the terminal device are collectively referred to as a terminal device in this application.

In addition, in the embodiment of the present application, the terminal device may also be a terminal device in an Internet of Things (IoT) system, the IoT is an important component of future information technology development, and the main technical feature of the IoT is to connect an object with a network through a communication technology, so as to implement an intelligent network with interconnected human-computer and interconnected objects.

It should be understood that, for convenience of understanding only, the network device and the terminal device are schematically illustrated in fig. 1, but this should not limit the present application, and the wireless communication system may further include a greater or lesser number of network devices, and may also include a greater number of terminal devices, and the network devices communicating with different terminal devices may be the same network device, or different network devices, and the number of network devices communicating with different terminal devices may be the same or different, and the present application does not limit this.

In addition, the communication system 100 may be a PLMN network, a D2D network, an M2M network, an IoT network, an NB-IoT network, or other networks, and fig. 1 is a simplified schematic diagram for example, and other access network devices may be included in the network, which is not shown in fig. 1.

In order to facilitate understanding of the embodiments of the present application, in the embodiments of the present application, communication and interaction among a base station eNB, a terminal device UE, and a mobility management entity MME are specifically described.

A brief introduction to several nouns or terms referred to in this application follows.

1. Wake-up radio frequency WUR and wake-up signal

The Wake-up radio is also known as a Wake-up Receiver (WUR). The WUR is to introduce a WUR interface into a terminal device (e.g., UE) based on configuring a traditional main radio interface (main radio) or also called a master module.

The Signal available for reception and decoding by the wake up radio WUR is called the wake up Signal. The WUR of the UE is continuously in a receiving state or intermittently in the receiving state, and when the WUR receives a wake-up signal (e.g., a wake-up packet, also called a wake-up frame, etc.) from the base station in the receiving state, the WUR sends a trigger signal to the main module to wake up the main module in the off state, and then performs data interaction with the main module of the base station through the awakened main module. The base station side logically also comprises a main module and a WUR module, but for the current 3GPP standard, the main module is often an OFDM broadband transmitter, and the WUR wake-up signal can be a narrow-band signal (to reduce the receiving power consumption of the WUR). For example, a part of subcarriers of the OFDM signal is left vacant and the signal is transmitted only in a narrow band corresponding to the WUR wake-up signal, thereby generating a narrow band signal, which is an example of generating a WUR narrow band signal using an OFDM wideband transmitter, so the base station side may include only one host interface.

In the specific implementation of the base station, the main module and the WUR module can be separately implemented, that is, the base station side can also include the main module and the WUR module at the same time.

2. Trigger signal

The trigger signal is used to trigger and activate the main interface. The master module is normally in an off state, and is activated only when a trigger signal is received from the WUR module, and then performs data communication with the base station through the master module. The triggering signal may be an interrupt signal sent by the WUR module to the main module, and is used to trigger the main module to enter an active state, and the triggering signal is a UE internal signal and may be transmitted in a wired or wireless manner. It should be noted that, the WUR module sends the trigger signal to the master module logically, in an actual system, the WUR interface may also forward the received wake-up signal to the processor, and the processor determines whether to wake up the master module, at this time, the trigger signal is actually sent by the processor, or the processor instructs other modules to send the trigger signal.

In general, a network device may send pages to terminal devices in both idle and connected states. The paging procedure may be triggered by the core network as shown in fig. 1 to notify a certain terminal device of receiving a paging request, or may be triggered by the network device to notify system information update. Paging messages in the LTE system are carried by a Physical Downlink Shared Channel (PDSCH) scheduled by a Physical Downlink Control Channel (PDCCH). For example, the Paging messages of 16 UEs at most may be carried in one PDSCH channel, the Paging messages of multiple UEs form one Paging List, the UE reads the Paging Record of each UE in the Paging List, and the Paging Record includes the Identity UE-Identity of the paged UE. If the UE finds that the UE mark of the UE is consistent with a certain UE-Identity, the UE judges that the UE is paged by the network equipment. Since paging messages of a plurality of UEs are transmitted in one PDSCH and network equipment does not know the channel quality of idle UEs, a general network may use a conservative MCS, a lower code rate, or a larger scheduling bandwidth when sending paging to UEs to ensure that UEs at the cell edge can receive the paging messages.

It should be understood that, in this embodiment of the present application, the network device sends a wakeup frame WUS to the wakeup radio WUR of the terminal device based on the first communication mode, and the WUS activates the WUR to generate a trigger signal, and activates the host interface of the terminal device. The network device may then communicate with the terminal device time. For example, the network device sends first data to the terminal device, and the terminal device receives the first data through the main interface, and such communication process is performed based on the second communication mode. I.e. the format of the first data is a data format that can be received and recognized by the main interface of the terminal device. This application includes but is not limited to.

Fig. 2 shows a schematic interface diagram between a terminal device 120 and a base station 110 according to an embodiment of the present application. Specifically, the above concept will be described in detail with reference to fig. 2.

In this communication system, the modules for data communication, collectively referred to as master communication modules, may also be referred to as master interfaces or master modules, such as master interface 122 shown in fig. 2; the modules for device wake-up, collectively referred to as wake-up radio, may also be referred to as wake-up radio interface or wake-up radio (WUR), such as the main interface 121 shown in fig. 2. The eNB 110 comprises at least one main interface 111 and an antenna module 112; the UE 120 includes at least one WUR interface 121, a host interface 122, and an antenna module 123. Of course, the eNB 110 in fig. 2 may further include a WUR interface, which is not limited in this application.

The eNB 110 sends a wakeup frame 150 (one of wakeup signals) to the WUR 121 of the UE 120, and when the WUR 121 of the UE 120 receives the wakeup frame 150 from the base station in a receiving state, sends a trigger signal to the main interface 122 to wake up the main module in a closed state, and then interacts with the main interface 111 of the eNB 110 through the woken main interface 122 to perform a data frame 160, thereby completing a communication process.

In addition, the antennas of the eNB 110 and the UE 120 are shown in fig. 2, it should be understood that the eNB 110 and the UE 120 may both have only one antenna, which mainly considers that the same antenna may be shared when the host interface and the WUR interface use the same or close frequency band carriers, so as to save cost and simplify the device structure. Of course, it is obviously also possible for the host interface and the WUR module to use different antennas, respectively. When the main interface and the WUR interface use different frequency band carriers with large distance in the frequency domain, the main interface and the WUR interface should be configured with different antennas. For example, the host interface uses the 6GHz band and the WUR interface uses the 1.8GHz band, where the two should use different antennas.

The UE can reduce power consumption by receiving signals using the WUR compared to receiving signals using the host interface, and the main reason is that the reception and decoding of the wake-up signal are much simpler than those of the conventional host interface. The wake-up signal is usually modulated by an on-off key (OOK) modulation, a Frequency Shift Keying (FSK), an Amplitude Shift Keying (ASK), and so on, which are easy to demodulate by the receiving end. Taking OOK modulation as an example, the receiving end determines the information carried by the received signal according to the presence or absence of energy, for example, the presence of energy is 1, and the absence of energy is 0. In the conventional main interface signal, since the transmitting end uses Orthogonal Frequency Division Multiplexing (OFDM), Turbo coding/Low-density Parity Check (LDPC)/Polar Code (Polar Code) channel coding, etc., correspondingly, the receiving end needs to perform complex signal processing operations such as Fast Fourier Transform (FFT), Forward Error Correction (FEC) decoding, etc., which require a large amount of energy consumption. Another way to implement low power WUR is for the receiving end to employ a passive receiver, such as Near Field Communication (NFC) technology.

In fig. 2, the main interface 111 of the eNB 110 and the main interface 122 of the UE 120 may be communication interfaces such as a wireless (WiFi) communication interface or a BlueTooth (BlueTooth). For cost saving and design simplification, the WUR interface on the UE side often only supports the reception capability of the wake-up signal, but not the transmission capability.

It should be noted that the sending end of the wake-up signal may be a base station, and the receiving end is a terminal device equipped with a WUR, such as the aforementioned terminal devices listed above, such as a mobile phone, a sensor, etc.; the sending end of the wake-up signal may also be a terminal device, such as the aforementioned terminal devices such as a mobile phone; the receiving end is other terminal equipment equipped with the WUR, such as the terminal equipment listed in the foregoing, such as a smart watch, a bracelet and the like; the sending end of the wake-up signal can also be terminal equipment, such as the aforementioned terminal equipment such as a mobile phone, and the receiving end is a base station equipped with a WUR; the sending end of the wake-up signal can also be terminal equipment, such as a smart watch, a bracelet and the like, and the receiving end is terminal equipment equipped with a WUR, such as a mobile phone. In short, the transmitting end of the wake-up signal needs to have the capability of transmitting the wake-up signal, and the receiving end needs to be equipped with the WUR interface to receive the wake-up signal. For convenience of description, the base station in this application refers to a transmitting end of the wake-up signal, and the UE refers to a receiving end of the wake-up signal, and does not represent a specific product form of the transceiver device. Herein, the wake-up signal is a general term for all signals that can be received and decoded by the WUR, and for example, the wake-up signal may be the aforementioned wake-up frame, but also other frames. It should be understood that the embodiments of the present application are not limited thereto.

If the WUR of the UE is active for a long time, it is obvious that power consumption is relatively high. One solution is that the WUR is intermittently in an active state, and a time window in which the WUR of the UE is in the active state is called a Wakeup window (Wakeup window), as shown in fig. 3, a schematic diagram of the Wakeup window provided in the embodiment of the present application is shown. The occurrence of such awake windows should be regular so that the base station can know when the WUR of the UE can receive the awake signal. For example, in fig. 3, T is a period during which WUR is active for a time T (time shown as a shaded portion in the figure). Specifically, for example, T is 100ms and T is 20ms, then WUR is active for 20ms every 100 ms. It should be understood that the time T and T is only an example, and the present application includes but is not limited thereto.

When the base station has data to send to the UE, the wake-up frame 150 may be sent in the wake-up window t time of the UE, so as to wake up the main interface 122 of the UE 120. The starting time, the window duration and the period of the awake window may be predefined by a standard or configured by the base station. Certainly, an awake window may not be introduced, that is, the WUR of the UE is always in a monitoring state, so that the base station may awake the UE at any time, which is beneficial to reducing the awake delay, and has a disadvantage of increasing the energy consumption of the UE.

For a terminal device with a WUR interface, that is, a UE is configured with the WUR interface, when a base station has no data to send to the UE and the UE has no data transmission, a main communication interface (such as NR/LTE/CDMA/GSM) of the UE is in an off state, and the WUR interface is in an active state or an intermittent active state as shown in fig. 3. When the base station has data to send to the UE, a wake-up frame is first sent to the WUR interface of the UE so as to enable the UE to wake up the own main communication interface. The wake-up frame should include the ID of the UE, and only when the UE detects that the target UE ID of the wake-up frame matches the UE itself, the UE wakes up its own main communication interface.

Currently, one method for identifying the terminal device on the network side is to use a Service-Temporary Mobile Subscriber Identity (S-TMSI). The S-TMSI is a shortened form of Globally Unique Temporary user Identity (GUTI) to achieve a more efficient wireless signaling flow for paging and service requests.

The S-TMSI is composed of two parts, as shown in FIG. 4, of an 8-bit MME Code (MMEC) and a 32-bit MME Temporary Mobile Subscriber Identity (M-TMSI). Wherein, the M-TMSI is a unique temporary mobile user identification in the control range of the MME.

In LTE and NR, the network side pages the user with S-TMSI, and this identity is carried in the Physical Downlink Shared Channel (PDSCH). Since the PDSCH can carry a large amount of information, S-TMSI can be used for user identification. However, the WUS has the characteristics of low modulation order, high reliability requirement and the like, and the amount of information that can be carried by the wakeup frame may be limited; in addition, in an application scenario of multi-device wake-up, a wake-up frame may also carry user identification IDs of multiple devices. Thus, a longer subscriber identity may not be suitable for carrying in the wake-up frame. In addition, when a wakeup frame WUS is transmitted in a Wireless local area network (WIFI), the WUS supports two rates of 62.5kb/s and 250kb/s, namely 62.5b/ms and 250 b/ms. Assuming that a wake-up frame is transmitted in a unit of one subframe (1ms) in the WUS, each wake-up frame can only carry information of about 62bits and 250 bits. At least a wake-up indication field needs to be carried in the wake-up frame to indicate that the frame is a wake-up frame, and other possible extension fields. Carrying a full S-TMSI identification indication in the wake-up frame is not necessarily the best way to identify low power devices.

At present, another method for identifying a terminal device at a Network side is to use a Cell Radio Network Temporary Identifier (C-RNTI) of 16bits, where the C-RNTI is a unique Identifier of a CONNECTED RRC _ CONNECTED UE in a Cell. But the C-RNTI can only be used for UEs in RRC _ CONNECTED state. Since the WUR technique may be applied to both CONNECTED RRC _ CONNECTED and IDLE RRC _ IDLE states, and C-RNTI cannot be applied to a low power device in the RRC _ IDLE state, a limitation on the scenario of using C-RNTI to identify the low power device is identified.

Therefore, the application provides a method for identifying low-power-consumption equipment, and provides a short identifier suitable for the low-power-consumption equipment, which can reduce the number of bits required for identifying the low-power-consumption equipment, and the short identifier is more suitable for WUS awakening frames carrying bits with limited length. Meanwhile, the space saved by the short identifier of the low-power-consumption device compared with the complete long identifier enables the design of the multi-device wake-up frame to be more flexible.

Fig. 5 is a schematic diagram of an example of identifying a low power consumption device according to an embodiment of the present application, where the method 500 may be applied to a network device in the communication system described in fig. 1 and fig. 2, and in particular, to a network device in a communication system including an access network device, a terminal device, and a mobility management entity MME, where the terminal device includes a wake-up radio frequency interface and a main interface, the wake-up radio frequency interface is configured to generate a trigger signal, the trigger signal is used to activate the main interface, the main interface is used for communication between the terminal device and the access network device, and the terminal device is located in at least one of a plurality of tracking areas TA controlled by the MME, and it should be understood that the present application is not limited thereto.

As mentioned previously, whether the existing S-TMSI of 40bits or M-TMSI of 32bits or C-RNTI of 16bits has limitations, the present application proposes a low power device identifier, which we will call for convenience of description a low power device short identifier (WU-TMSI), which is a device identifier within a TA or TA list. It should be understood that the specific names may be replaced by other names, including but not limited to those provided herein.

It is to be understood that one MME may control a plurality of tracking areas TA, at least one of which the terminal device is located. The network device allocates the WU-TMSI for the UE on the network, and the network side can allocate the WU-TMSI for the low-power-consumption device through a mobility management network element, wherein the mobility management network element can be an MME. The TA list of the present application includes at least one TA of the plurality of TAs controlled by one MME. For example, when the TA list includes 5 TAs, and the 5 TAs are controlled by the same MME, the WU-TMSI is the identity within the 5 TAs; when the TA list includes 1 TA, then the WU-TMSI is the unique identifier within that TA.

Furthermore, it should be understood that in the embodiments of the present application, the WU-TMSI is limited in consideration that, when the terminal device is in only one TA, the WU-TMSI of the terminal device is unique within the TA; when the terminal device is in the TA list formed by 5 TAs at the same time, the WU-TMSI may not be unique, and at this time, the identities of multiple terminal devices may be the same, and the network side may wake up multiple terminal devices with similar functions at the same time. Even if the WUS awakens a plurality of terminal devices by mistake, when the terminal devices start to communicate with the network devices by using the main interface, the network devices still use the S-TMSI or the M-TMSI to identify the terminal devices under the main interface, so that the network devices can uniquely page target terminal devices by using the unique identification of the S-TMSI or the M-TMSI after the WUS awakening. This application includes, but is not limited to, this.

Fig. 6 is illustrated in detail from a schematic view of the interaction between the terminal device and the network device. Specifically, the specific interaction process among the MME, the access network device and the terminal device is shown when the MME allocates the first identity WU-TMSI to the terminal device UE. Next, a method for identifying a low power consumption device according to an embodiment of the present application is described with reference to fig. 5 and 6.

As shown in fig. 6, the method 600 includes the following.

S601, the MME allocates a first identifier WU-TMSI to the terminal equipment, and the terminal equipment receives the first identifier allocated by the MME.

Optionally, the first identifier is an identifier of the terminal device within a control range of a TA included in a first TA list, the first TA list includes at least one TA of the multiple TAs, and a length of the first identifier is smaller than a length of the second identifier, and the second identifier is a unique identifier of the terminal device within a control range of the MME.

The second identification is a unique temporary mobile subscriber identification (S-TMSI) or M-TMSI within the control range of the MME, because the M-TMSI contains 32bits of indication information, and the S-TMSI has 8bits of MME identification on the basis of the 32bits of M-TMSI, and the information amount is larger.

It is to be understood that one MME may control a plurality of tracking areas TA, at least one of which the terminal device is located. The network device assigns the WU-TMSI to the UE on the network, and the WU-TMSI is the device identification in the TA or the TA list. The TA list of the present application includes at least one TA of the plurality of TAs controlled by one MME. For example, when the terminal device is within only one TA, then the WU-TMSI of the terminal device is unique within that TA; when the terminal device is in a TA list of multiple TAs at the same time, the WU-TMSI may not be unique,

optionally, the first identity is generated based on the second identity. Specifically, there are the following three possible implementations.

The first method is as follows:

as a possible implementation, the sequence of the first identifier is truncated from the sequence of the second identifier. For example, the sequence of the first identifier is generated by partially truncating the sequence of S-TMSI or M-TMSI.

For example, as shown in fig. 7, the 8-bit MMEC and the 32-bit sm-TMSI constitute a 40-bit S-TMSI, and the first 24bits of the S-TMSI can be truncated, so there is WU-TMSI MMEC + Partial M-TMSI.

For the WU-TMSI generation scheme of FIG. 7, the original general ID configuration mode is inherited, that is, the WU-TMSI configuration is as follows: management area + in-area ID. The method has the advantage of facilitating the tracking of the terminal equipment by the core network equipment MME based on the MME. However, the fact that the Partial M-TMSI domain has only 16bits means that up to 65536 packets (including one or more terminal devices in a group) can be made to terminal devices under the same MME.

Alternatively, as shown in fig. 8, the last 24bits of the S-TMSI may be truncated, so that WU-TMSI is Partial M-TMSI.

For the WU-TMSI generation scheme of FIG. 8, 24bits of WU-TMSI are all taken to be M-TMSI, i.e., the in-region ID. The randomness of the ID is higher than in the truncation scheme of fig. 7. In other words, the probability of WU-TMSI repetition in TA list is much smaller for a terminal device than for the interception scheme of fig. 7, i.e. the probability of false wake-up is much smaller.

Under the scheme provided by the first mode, the base station can use 1bit indication information to indicate whether the terminal equipment uses the front interception or the back interception, and use 5bits indication information to indicate how many bits are intercepted. When the base station needs to wake up the terminal equipment in the wake-up frame WUS, the base station directly carries the WU-TMSI in the ID field of the target terminal equipment. When the terminal device detects that the ID field of the target terminal device in the WUS is the same as the WU-TMSI of the terminal device, the terminal device immediately wakes up the main communication interface to communicate with the base station.

The second method comprises the following steps:

the sequence of the first identifier is generated after the sequence of the second identifier is transformed based on a preset function. For example, the first identified sequence is generated after the S-TMSI or M-TMSI sequence is subjected to transformation processing.

Alternatively, an embodiment of the transformation process is divided into two steps: 1. intercepting a bit string for S-TMSI or M-TMSI; 2. the bit string is scrambled using the MMEC and/or TAC. Here, TAC refers to an ID of the tracking area TA.

Specifically, the following steps may be performed.

And secondly, carrying out dislocation XOR operation on the obtained bit String, the MMEC String and the TAC String to obtain the WU-TMSI, as shown in FIG. 9.

Without loss of generality, the first step of FIG. 9 intercepts the last 24bits of the S-TMSI as an example. In practical application, the bit number and position of the truncation can be flexibly changed.

Assuming that WU-TMSI requires x bits (x > -16), the MMEC string is a string of bits resulting from pre-or post-interpolation of (x-8) 0bits to the MMEC. And the TAC string is a bit string obtained after pre-interpolation or post-interpolation of (x-16) 0bits to the TAC.

The third method comprises the following steps:

the sequence of first identifiers is generated based on a random generating function. That is, the base station can generate the WU-TMSI using an arbitrary sequence random generation function and configure it to the terminal device.

If the base station and the terminal equipment both know the concrete expression of the sequence random generation function, the base station can also configure the parameters of the sequence random generation function for the terminal equipment, and the terminal equipment generates the WU-TMSI locally at the terminal equipment.

The scheme provides a short identification WU-TMSI suitable for low-power consumption equipment, and the short identification WU-TMSI is suitable for the characteristic that the number of bearing bits of a wake-up frame is limited, so that the number of bits required by identification terminal equipment is reduced, and the short identification WU-TMSI is more suitable for the WUS wake-up frame carrying bits with limited length. The space saved by the short identifier of the low-power-consumption device compared with the complete long identifier enables the design of the multi-device wake-up frame to be more flexible.

further, the first identity may be generated by the MME, in which case the MME generates the first identity in any of the possible ways described above. For example, first, the terminal device sends an identity request message, or a TA update message, to the network device requesting the network device to allocate a low power consumption device identity WU-TMSI to the terminal device. Secondly, the MME receives the request message and generates the first identity WU-TMSI. Then, the MME allocates the first identifier to the terminal device, and specifically, the allocated first identifier may be configured to the terminal device in a Radio Resource Control (RRC) signaling or a Media Access Control (MAC CE) signaling mode.

In this case, the MME maintains a mapping table of M-TMSI to WU-TMSI IDs for all terminal devices within the MME control range, as shown in table 1 below, where the mapping in the table is one-to-one. In the following table 1, the terminal device has a one-to-one mapping relationship between the International Mobile Subscriber identity Number (IMSI) of the terminal device in the International range, the unique identity M-TMSI or S-TMSI of the terminal device in the MME control range, and the first identity WU-TMSI.

TABLE 1

Or, in another case, in the process of allocating the identifier to the terminal device, the terminal device generates the first identifier, and the MME sends, to the terminal device, an indication message, where the indication message is used to indicate the terminal device to generate the first identifier, and the indication message includes a parameter or a function for generating the first identifier, and the like. After receiving the indication message, the terminal device generates the first identifier according to the parameter or the function, and specifically, the first identifier may be generated according to any of the foregoing manners, which is not described herein again for simplicity.

It should be understood that the execution of S601 may be only performed when the terminal device is in only one TA, or when the terminal device is in a TA list composed of a plurality of TAs at the same time, the execution of S601 may be only performed when the terminal device moves between TA lists, and so on. Optionally, the execution of S601 may also be used when the terminal device initially accesses the network device, or receives multiple times of network-side paging, which is included in the embodiments of the present application but not limited thereto.

S602, MME sends a first paging message to access network equipment, and the first paging message is used for initiating paging to the terminal equipment.

Optionally, the first paging message may carry the first identifier. For the MME, the MME allocates a first identifier for the terminal equipment, so the MME can carry the first identifier WU-TMSI when initiating paging to the terminal equipment.

S603, the base station receives the first paging message sent by the MME, and executes S604 to send a wake-up frame to the terminal equipment accessed by the base station, wherein the wake-up frame carries the first identifier.

The base station plays a role of a bridge in the process of paging the terminal equipment by the MME, receives the first paging message of the MME, obtains the identifier of the terminal equipment in the first paging message, and sends the wake-up frame to the plurality of accessed terminal equipment. The base station may access a plurality of terminal devices, and after receiving the wake-up frame, the plurality of terminal devices obtain the identifier of the terminal device carried in the wake-up frame.

And S605, the terminal equipment receives a wakeup frame WUS sent by the base station through the wakeup radio frequency module WUR, and the wakeup frame WUS carries the first identifier WU-TMSI.

After receiving the wakeup frame WUS, the terminal device executes S502 in fig. 5, and after determining that the first message is valid according to the first identifier, the terminal device controls the wakeup radio frequency interface to generate a trigger signal according to the first message, so as to activate the main interface.

Because the terminal equipment is configured with the WUR interface, when the base station does not send data to the terminal equipment and the terminal equipment does not transmit data, the main communication interface of the terminal equipment is in a closed state, and the WUR interface is in an active state or an intermittent active state. When the base station sends data to the terminal equipment, a wakeup frame WUS is firstly sent to a WUR interface of the terminal equipment so as to enable the terminal equipment to wake up the own main communication interface. The wake-up frame should include an identifier ID of the terminal device, and only when the terminal device detects that the target ID of the wake-up frame matches itself, the terminal device wakes up its own main communication interface.

The terminal equipment receives the awakening frame sent by the base station, acquires the first identification WU-TMSI carried by the awakening frame, and compares the identification with the identification of the terminal equipment. And through comparison, if the identifier is consistent with the self identifier, receiving the awakening frame, and triggering the WUR to generate a trigger signal for triggering and activating the main interface. The master module is normally in an off state, and is activated only when a trigger signal is received from the WUR module, and then performs data communication with the base station through the master module.

If the identification is not consistent with the self identification, the wake-up frame is discarded, and a trigger signal does not need to be generated to wake up the main interface. The triggering signal may be an interrupt signal sent by the WUR module to the main module, and is used to trigger the main module to enter an active state, and the triggering signal is a UE internal signal and may be transmitted in a wired or wireless manner. It should be noted that, the WUR module sends the trigger signal to the master module logically, in an actual system, the WUR interface may also forward the received wake-up signal to the processor, and the processor determines whether to wake up the master module, at this time, the trigger signal is actually sent by the processor, or the processor instructs other modules to send the trigger signal. It is to be understood that the embodiments of the present application include, but are not limited to, the foregoing.

When the above process is completed, the terminal device has activated the main interface 122, the network device executes S520 in fig. 5, and the network device sends first data to the terminal device, where the format of the first data is a format matched with the main interface.

In the subsequent link of the network equipment and the terminal equipment, the communication is carried out through respective main interfaces, and the S-TMSI or the M-TMSI is used by the network equipment to identify the terminal equipment under the main interfaces, so that the S-TMSI or the M-TMSI which is a unique identifier can be provided after the false wake-up to ensure that the network equipment can uniquely page the target terminal equipment. There is a unique identification of S-TMSI or M-TMSI even after false wake-up to ensure that the network device can uniquely page the target terminal device.

In the embodiment of the application, the network device sends the wakeup frame WUS to the wakeup radio WUR of the terminal device, and the wakeup frame WUS is based on a first communication mode, that is, the data format of the WUS is identifiable and acquirable by the wakeup radio WUR of the terminal device. Such a communication scheme ensures that interfaces other than the WUR do not misconnect the wakeup frame WUS.

According to the technical scheme, a WU-TMSI is allocated to the terminal equipment within the control range of the MME through the MME, and the ID mapping table within the control range of the MME is updated. If the terminal device enters the WUR activation mode, the network side may instruct the MME to page the terminal device with S-TMSI when the network side needs to page the terminal device. And the MME sends a paging request to the base stations under the TA or TAI list to which the low-power consumption equipment belongs according to the local ID mapping table, wherein the base stations carry the low-power consumption short identifications WU-TMSI of the terminal equipment and indicate the base stations to page the terminal equipment by the short identifications WU-TMSI. And then, the base station wakes up the target terminal equipment by carrying the target WU-TMSI in the WUS, and wakes up the main interface when the target terminal equipment finds that the target WU-TMSI carried in the WUS is consistent with the WU-TMSI distributed by the target terminal equipment, and then the base station communicates with the base station through the main interface.

In the above flow, when the network side allocates WU-TMSI, the terminal device should be in RRC _ Connected state. When the base station transmits the WUS, the terminal device can be in an RRC _ Connected state or an RRC _ Idle state.

Besides the MME for allocating the low-power-consumption short identifier WU-TMSI to the terminal equipment, the network side can also allocate the WU-TMSI to the low-power-consumption equipment through the base station.

Fig. 10 is a schematic diagram illustrating another example of a low power consumption device according to an embodiment of the present application, as shown in fig. 10, and fig. 10 is also applied to the communication systems described in fig. 1 and fig. 2. Fig. 10 is illustrated in detail from a schematic view of the interaction between the terminal device and the network device. The specific interaction process between the MME, the base station and the terminal device when the base station allocates the first identity WU-TMSI to the terminal device is specifically shown. Next, a method for identifying a low power consumption device according to an embodiment of the present application is described with reference to fig. 10 and 11. In this embodiment, a base station 1, a base station 2 to a base station n are described, where a plurality of tracking areas TA are included in one MME control range, and one TA may include a plurality of base stations.

As shown in fig. 10, the method 1000 includes the following.

S1001, the base station 1 allocates a first identifier WU-TMSI to the terminal equipment, and the terminal equipment receives the first identifier allocated by the MME.

S1002, the base station 1 indicates update of the ID mapping table among all base stations in the same TA area.

Specifically, in the above process, the base station allocates a WU-TMSI to the terminal device, and the base station indicates to update the ID mapping table to other base stations in the same TA through an X2 interface or the like. It should be understood that the X2 interface is an interconnection interface between base stations, enabling direct transmission of data and signaling. A base station under the same TA maintains an ID mapping table of S-TMSI to WU-TMSI (or M-TMSI to WU-TMSI) of all terminal equipment in the TA, and as shown in the following table 2, first identifications WU-TMS and S-TMSI of the terminal equipment are mapped one by one.

TABLE 2

UE numbering	S-TMSI	WU-TMSI	…
				1	40bits	X bits	…
2	40bits	X bits	…
				3	40bits	X bits	…
…	…	…	…

By updating the mapping table of the terminal device between the base stations, all the base stations under one TA can form a consensus on the identifier of the terminal device.

After that, if the terminal device enters the WUR activation mode, when the network side needs to page the terminal device, the flow shown in fig. 11 may be executed. Fig. 11 is a schematic diagram for identifying a low power consumption device according to another example provided in the embodiment of the present application. Thereafter, when the network side wants to initiate paging for the terminal device, the MME may be paged with an S-TMSI indication. The MME indicates the paging terminal equipment with S-TMSI to all base stations (such as base station 1, base station 2 to base station n) under the TA to which the low power consumption equipment belongs. And then, the base station wakes up the target terminal equipment by carrying the target WU-TMSI in the WUS in the wake-up frame according to the local ID mapping table, and wakes up the main interface when the target terminal equipment finds that the target WU-TMSI carried in the WUS is consistent with the WU-TMSI distributed by the target terminal equipment, so as to communicate with the base station through the main interface.

Specifically, as shown in fig. 11, the method 1100 includes the following.

S1101, an MME initiates a first paging message to a base station, wherein the first paging message carries a second identifier. For example, the second identifier is S-TMSI or M-TMSI.

Optionally, this step may also carry the first identity, provided that the base station informs the MME of the low power device short identity WU-TMSI in a certain way after allocating the low power device short identity WU-TMSI to the terminal device. If the MME already has the short identification information of the terminal equipment, the MME initiates paging to the base station and can also carry the low-power consumption equipment short identification WU-TMSI, namely the first identification. It is to be understood that this application includes, but is not limited to.

S1102, the base station sends a wakeup frame WUS to the terminal equipment, and the wakeup frame carries the first identifier.

And S1103, the terminal device receives the wake-up frame, controls the wake-up radio frequency interface to generate a trigger signal according to the wake-up frame after determining that the wake-up frame is valid according to the first identifier, so as to activate the main interface, and the terminal device communicates with the network device through the main interface.

The network equipment sends a wakeup frame WUS to a wakeup radio frequency WUR of the terminal equipment based on the first communication mode, and the WUS activates the WUR to generate a trigger signal and activates a main interface of the terminal equipment. The network device may then communicate with the terminal device time. For example, the network device sends first data to the terminal device, and the terminal device receives the first data through the main interface, and such communication process is performed based on the second communication mode. I.e. the format of the first data is a data format that can be received and recognized by the main interface of the terminal device. Embodiments of the present application include, but are not limited to, the following. In the above process, coordination between base stations should also avoid the problem of duplication of WU-TMSI allocated in the same TA.

The WU-TMSI is a low-power consumption device identification which is unique to the terminal device in one TA or TA list. When the terminal device in the WUR activation mode is TA updated due to movement, the network side may allocate a new WU-TMSI to the terminal device through the flow shown in fig. 6 or fig. 10 during the TA UPDATE, and the WU-TMSI may be carried in the tracking area UPDATE ACCEPT TRACKING AREA UPDATE ACCEPT message content. For example, when the terminal device monitors the WUS synchronization frame, it finds that the low power consumption device moves to a new TA other than the stored TA list, and wakes up the host interface to execute the TA update procedure. In this process, the network side allocates a new WU-TMSI to the terminal device through the procedure described in fig. 6 or fig. 10.

It should be noted that a terminal device may belong to multiple TAs at the same time, that is, a terminal device corresponds to a TA List (TA List), and the TA List may include one or more TAs. In this case, the TAs in the above description should be replaced with TA lists, and the WU-TMSI should be a low power device identifier that the terminal device has uniqueness within its corresponding TA List.

In summary, based on the method provided in the embodiments of the present application, when the base station sends the WUS to wake up the terminal devices in the RRC _ Connected state and the RRC _ IDLE state, the target terminal device identifier in the WUS is implemented in the following two possible ways.

The first method is as follows:

the target terminal device identity in the WUS uses the low power short identity WU-TMSI no matter whether the terminal device is in the CONNECTED state RRC _ CONNECTED or the IDLE state RRC _ IDLE. The identification method can enable the awakening frame WUS to carry information with short and fixed bit length, and simplifies the design of a data structure in the WUS.

The second method comprises the following steps:

for the RRC _ IDLE state terminal equipment, the target terminal equipment in the WUS is identified as WU-TMSI; for the terminal device in the RRC _ CONNECTED state, the target terminal device identifier in the WUS is a cell-level unique identifier of the terminal device, such as C-RNTI.

Because the terminal device is in what state, both the network side and the terminal device side know, and accordingly, what kind of target terminal device identifier should be sent by the network side and what kind of target terminal device identifier should be received by the terminal device are also naturally clear and unmistakable.

Therefore, this method can shorten the information bit length in the WUS in the RRC _ CONNECTED state, and does not cause ambiguity when the base station transmits the WUS and the terminal device receives the WUS. Since there are two WUS lengths, the base station should support transmission of the two length WUS, and the terminal device should support reception of the two length WUS.

Additionally, it should be understood that for the aforementioned terminal device, the WU-TMSI may be a unique identification within the TA or TAI list. In practical application, for application scenes such as intelligent meter reading and the like in the Internet of things, the WU-TMSI of the equipment in the scene can be not unique, so that group awakening operation can be realized.

The communication method according to the embodiment of the present application is described above with reference to fig. 1 to 11, and the communication apparatus according to the embodiment of the present application is described below with reference to fig. 12 to 17.

Fig. 12 is a schematic block diagram of a communication apparatus 1200 provided in an embodiment of the present application. The communication apparatus 1200 may correspond to (e.g., may be configured with or be a terminal device itself) the terminal device described in the method 600 or the method 1000. The communication apparatus 1200 is applied to a communication system including an access network device and a mobility management entity MME, where the communication apparatus 1200 at least includes a wake-up radio frequency interface and a main interface, where the wake-up radio frequency interface is configured to generate a trigger signal, the trigger signal is configured to activate the main interface, the main interface is configured to be used for communication between the terminal device and the access network device, and the terminal device is located in at least one TA of a plurality of tracking areas TA controlled by the MME.

As shown in fig. 12, the communication apparatus 1200 may include: a communication unit 1210 and a processing unit 1220.

In one possible design, the communication apparatus 1200 may be a terminal device or a chip configured in the terminal device.

A communication unit 1210, configured to receive a first message through the wake-up radio frequency interface, where the first message is used to trigger the wake-up radio frequency interface to generate the trigger signal, and the first message carries a first identifier, where the first identifier is an identifier of the terminal device in a first TA list, the first TA list includes at least one TA of the multiple TAs, a length of the first identifier is smaller than a length of the second identifier, and the second identifier is a unique identifier of the terminal device in a control range of the MME.

The processing unit 1220 is configured to control the wake-up rf interface to generate a trigger signal according to the first message after determining that the first message is valid according to the first identifier, so as to activate the main interface;

the communication unit 1210 is further configured to communicate with the network device through the main interface by the terminal device.

Optionally, the first identity is generated based on the second identity.

For the specific generation process of the first identifier, reference is made to the foregoing description, and details are not described herein for simplicity. It should be understood that the generation of the first identifier may be performed by the processing unit 1220 of the communication apparatus 1200, or the communication unit 1210 may receive the first identifier sent by the network device, which includes but is not limited to this application.

As a possible implementation manner, before the communication unit 1210 receives the first message through the wake-up radio frequency interface, the processing unit 1220 is configured to generate the first identifier; the communication unit 1210 sends the indication information of the first identifier to the network device.

In another possible implementation manner, before the communication unit 1210 receives the first message through the wake-up radio frequency interface, the communication unit 1210 receives indication information of the first identifier sent by the network device.

Optionally, when the processing unit 1220 determines that the terminal device is in a connected state, the processing unit 1220 determines a cell radio network temporary identity C-RNTI of the terminal device as the first identity.

The processing unit 1220 may determine the state of the communication apparatus 1200, for example, when the processing unit 1220 determines whether the communication apparatus 1200 is in the CONNECTED state RRC _ CONNECTED or the IDLE state RRC _ IDLE. The processing unit 1220 uses the low power short identifier WU-TMSI as the target terminal device identifier in the WUs, regardless of whether the CONNECTED RRC _ CONNECTED or the IDLE RRC _ IDLE state. The identification method can enable the awakening frame WUS to carry information with short and fixed bit length, and simplifies the design of a data structure in the WUS.

Or, when the processing unit 1220 determines that the communication apparatus 1200 is in the RRC _ IDLE state, the processing unit 1220 identifies the target terminal device in the WUS as the WU-TMSI; when the processing unit 1220 determines that the communication apparatus 1200 is in the RRC _ CONNECTED state, the processing unit 1220 identifies the target terminal device in the WUS as a cell-level unique identifier of the terminal device, such as a C-RNTI.

It should be understood that the communication apparatus 1200 may correspond to a terminal device in the communication method 600 and a terminal device in the communication method 1100 according to the embodiment of the present application, and the communication apparatus 1200 may include modules for executing the methods executed by the terminal devices in the communication method 600 and the communication method 1100 in fig. 6. Also, in order to implement the corresponding flows in the communication method 600 and the communication method 1100 in fig. 6, respectively, the modules and the other operations and/or functions in the communication apparatus 1200 are specifically used in the steps 601 and 604 in the method 600, or the communication unit 1210 is used in the steps 1002 and 1103 in the method 1100; the processing unit 1220 is configured to execute the step 605 in the method 600, or the processing unit 1220 is configured to execute the step 1103 in the method 1100, and specific processes of the units for executing the corresponding steps are described in detail in the method 600 and the method 1100, and are not described herein again for brevity.

Fig. 13 is a schematic block diagram of a communication apparatus 1300 provided in an embodiment of the present application, where the communication apparatus 1300 may correspond to (e.g., may be configured as or be itself) the network device described in the method 600 and the method 1100. The communication apparatus 1300 may be an access network device or a core network device, and is applied to a communication system including a terminal device, where the terminal device at least includes a wake-up radio frequency interface and a main interface, the wake-up radio frequency interface is configured to generate a trigger signal, the trigger signal is configured to activate the main interface, the main interface is configured to be used for communication between the terminal device and the communication apparatus 1300, and the terminal device is located in at least one of a plurality of tracking areas TA controlled by the core network device.

As shown in fig. 13, the communication apparatus 1300 may include: a communication unit 1310 and a transceiving unit 1320.

In one possible design, the communication apparatus 1300 may be a network device or a chip configured in a network device.

A communication unit 1310, configured to send a first message to the terminal device through the wake-up radio frequency interface, where the first message is used to trigger the wake-up radio frequency interface to generate the trigger signal, and the first message carries a first identifier, where the first identifier is an identifier of the terminal device in a first TA list, the first TA list includes at least one TA of the multiple TAs, and a length of the first identifier is smaller than a length of the second identifier, and the second identifier is a unique identifier of the terminal device in the MME control range.

A processing unit 1320, configured to communicate with the terminal device through the main interface after the terminal device controls the wake-up rf interface to generate a trigger signal to activate the main interface according to the first message.

Optionally, the first identity is generated based on the second identity.

For the specific generation process of the first identifier, reference is made to the foregoing description, and details are not described herein for simplicity. It should be understood that the generation of the first identifier may be performed by the processing unit 1320 of the communication apparatus 1300, or the communication unit 1310 may receive the first identifier sent by the terminal device, which includes but is not limited to this application.

As a possible implementation manner, before the communication unit 1310 sends the first message to the terminal device through the wake-up rf interface, the processing unit 1320 is configured to generate the first identifier; the communication unit 1310 sends the indication information of the first identifier to the terminal device.

In another possible implementation manner, before the communication unit 1310 sends the first message to the terminal device through the wake-up radio frequency interface, the communication unit 1310 receives indication information of the first identifier sent by the terminal device.

Optionally, the second identifier is a temporary mobile subscriber identifier M-TMSI or S-TMSI of a mobility management network element of the terminal device.

It should be understood that the communication apparatus 1300 may correspond to the network device in the communication method 600 and the network device in the communication method 1100 according to the embodiment of the present application, and the communication apparatus 1300 may include modules for performing the methods performed by the network devices in the

communication methods

600 and 1100 in fig. 6. Also, the modules and other operations and/or functions described above in the communication apparatus 1300 are respectively for implementing the corresponding flows in the communication method 600 and the communication method 1100 in fig. 6, specifically, the communication unit 1310 is used for the steps 601, 602 and 604 in the method 600, or the communication unit 1310 is used for the steps 1002 and 1102 in the method 1100; the processing unit 1320 is configured to execute the step 603 in the method 600, and specific processes of the units executing the corresponding steps are already described in detail in the method 600 and the method 1100, and are not described herein again for brevity.

Fig. 14 is a schematic structural diagram of a terminal device 1400 provided in an embodiment of the present application. As shown in fig. 14, the terminal device 1400 includes a processor 1410 and a transceiver 1420. Optionally, the terminal device 1400 further comprises a memory 1430. Wherein, the processor 1410, the transceiver 1420 and the memory 1430 are communicated with each other via the internal connection path to transmit control and/or data signals, the memory 1430 is used for storing computer programs, and the processor 1410 is used for calling and running the computer programs from the memory 1430 to control the transceiver 1420 to transmit and receive signals.

The processor 1410 and the memory 1430 may be combined into a single processing device, and the processor 1410 may be configured to execute the program code stored in the memory 1430 to implement the functions described above. In particular implementations, the memory 1430 may also be integrated with the processor 1410 or may be separate from the processor 1410.

The terminal device may further include an antenna 1440, for example, the main interface and the wake-up radio frequency WUR of the terminal device in this embodiment are configured to send out downlink data or downlink control signaling output by the transceiver 1420 through a wireless signal.

Specifically, the terminal device 1400 may correspond to the terminal device in the communication method 600 and the terminal device in the communication method 1100 according to the embodiment of the present application, and the terminal device 1400 may include modules for executing the methods executed by the terminal devices in the communication method 600 and the communication method 1100 in fig. 6. Also, the modules and other operations and/or functions described above in the terminal device 1400 are respectively for implementing the corresponding flows in the communication method 600 in fig. 6 and the communication method 1100 in fig. 11. Specifically, the memory 1420 is configured to store a program code, so that the processor 1410 executes the step 605 in the method 600 and controls the transceiver 1420 to execute the step 601 and the step 604 in the method 600 through the antenna 1440 when executing the program code, or the processor 1410 executes the step 605 in the method 600 and controls the transceiver 1420 to execute the step 1002 and the step 1103 in the method 1100 through the antenna 1440 when executing the program code, and specific processes of the respective modules for executing the corresponding steps are described in detail in the method 600 and the method 1100, and are not described herein again for brevity.

Fig. 15 is a schematic structural diagram of a terminal device 1500 according to an embodiment of the present application. As shown in fig. 15, the terminal apparatus 1500 includes: a processor 1501 and a transceiver 1502, optionally the terminal device 1500 further comprises a memory 1503. Wherein, the processor 1502, the transceiver 1502 and the memory 1503 are communicated with each other through the internal connection path to transmit control and/or data signals, the memory 1503 is used for storing computer programs, and the processor 1501 is used for calling and running the computer programs from the memory 1503 to control the transceiver 1502 to transmit and receive signals.

The processor 1501 and the memory 1503 may be combined into a processing device 1504, and the processor 1501 is configured to execute the program codes stored in the memory 1503 to implement the functions. In particular, the memory 1503 may be integrated into the processor 1501 or may be separate from the processor 1501. The terminal device 1500 may further include an antenna 1510, configured to send uplink data or uplink control signaling output by the transceiver 1502 through a wireless signal.

Specifically, the terminal device 1500 may correspond to a terminal device in the communication method 600 and the communication method 1100 according to the embodiment of the present application, the terminal device 1500 may include modules for executing the method executed by the terminal device in the communication method 600 in fig. 6, and each module and the other operations and/or functions described above in the terminal device 1500 are respectively for implementing corresponding flows of the communication method 600 and the communication method 1100 in fig. 6. Specifically, the memory 1503 is configured to store a program code, so that when the processor 1501 executes the program code, the step 605 in the method 600 or the step 1103 in the method 1100 is executed, and specific processes of the modules executing the corresponding steps are already described in detail in the method 600 and the method 1100, and are not described herein again for brevity.

The processor 1501 described above may be used to perform the actions described in the previous method embodiments that are implemented internally by the terminal, and the transceiver 1502 may be used to perform the actions described in the previous method embodiments that the terminal transmits or transmits to the terminal device. Please refer to the description of the previous embodiment of the method, which is not repeated herein.

The processor 1501 and the memory 1503 may be integrated into a single processing device, and the processor 1501 is configured to execute the program codes stored in the memory 1503 to implement the functions described above. In particular, the memory 1503 may be integrated into the processor 1501.

The terminal apparatus 1500 may further include a power supply 1505 for providing power to various devices or circuits in the terminal.

In addition, in order to further improve the functions of the terminal device, the terminal device 1500 may further include one or more of an input unit 1514, a display unit 1516, an audio circuit 1518, a camera 1520, a sensor 1522, and the like, and the audio circuit may further include a speaker 1582, a microphone 1584, and the like.

Fig. 16 is a schematic structural diagram of a network device 1600 according to an embodiment of the present application. As shown in fig. 16, the network device 1600 includes a processor 1616 and a transceiver 1620. Optionally, the network device 1600 also includes a memory 1630. The processor 1616, the transceiver 1620 and the memory 1630 are in communication with each other via an internal connection path to transmit control and/or data signals, the memory 1630 is used for storing a computer program, and the processor 1616 is used for calling and running the computer program from the memory 1630 to control the transceiver 1620 to transmit and receive signals.

The processor 1616 and the memory 1630 may be combined into a single processing device, and the processor 1616 may be configured to execute the program code stored in the memory 1630 to implement the functions described above. In particular implementations, the memory 1630 may be integrated with the processor 1616 or separate from the processor 1616.

The network device may further include an antenna 1640, for example, a main interface for communication according to an embodiment of the present application, configured to send downlink data or downlink control signaling output by the transceiver 1620 through a wireless signal.

Specifically, the network device 1600 may correspond to the network device in the communication method 600 and the network device in the communication method 1100 according to the embodiment of the present application, and the network device 1600 may include modules for executing the methods executed by the terminal devices in the communication method 600 and the communication method 1100 in fig. 6. Also, the modules and other operations and/or functions described above in the network device 1600 are respectively for implementing the corresponding flows in the communication method 600 and the communication method 1100 in fig. 6. Specifically, the memory 1630 is used for storing program codes and controlling the transceiver 1620 to execute the steps 601, 602, and 604 of the method 600 or the steps 1002 and 1102 of the method 1100 via the antenna 1640; the specific processes of the modules for executing the above corresponding steps are described in detail in the

methods

600 and 1100, and are not described herein again for brevity.

Fig. 17 is a schematic structural diagram of a network device 1700 according to an embodiment of the present application. May be used to implement the functionality of the network device in methods 200 and 500 described above. Such as a schematic diagram of the structure of the base station. As shown in fig. 17, the base station can be applied to the system shown in fig. 1. The base station 1700 includes one or more radio frequency units, such as a Remote Radio Unit (RRU) 1701 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 1702. The RRU1701 may be referred to as a transceiver unit, transceiver, transceiving circuitry, or transceiver, etc., which may include at least one antenna 1703 and a radio unit 1704. The RRU1701 part is mainly used for transceiving radio frequency signals and converting the radio frequency signals to baseband signals, for example, for sending signaling messages described in the above embodiments to terminal equipment. The BBU 1702 is mainly used for performing baseband processing, controlling a base station, and the like. The RRU1701 and the BBU 1702 may be physically located together or may be physically located separately, i.e. distributed base stations.

The BBU 1702 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, this BBU (determination unit) 1702 can be used to control the base station 1700 to perform the operational procedures described above with respect to the network device in the embodiment of the method 200.

In an example, the BBU 1702 may be formed by one or more boards, and the boards may collectively support a radio access network of a single access system (e.g., an LTE system or an NR system), or may respectively support radio access networks of different access systems. The BBU 1702 also includes a memory 1705 and a processor 1706. The memory 1705 is used to store necessary instructions and data. For example, the memory 1705 stores the codebook and the like in the above-described embodiment. The processor 1706 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation flow related to the network device in the above method embodiment. The memory 1705 and the processor 1706 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

In one possible implementation, with the development of System-on-chip (SoC) technology, all or part of the functions of the part 1702 and the part 1701 may be implemented by SoC technology, for example, by a base station function chip integrating a processor, a memory, an antenna interface and other devices, and a program of the related functions of the base station is stored in the memory and executed by the processor to implement the related functions of the base station. Optionally, the base station function chip can also read a memory outside the chip to implement the relevant functions of the base station.

It should be understood that the structure of the base station illustrated in fig. 17 is only one possible form, and should not limit the embodiments of the present application in any way. This application does not exclude the possibility of other forms of base station structure that may appear in the future.

According to the method provided by the embodiment of the present application, an embodiment of the present application further provides a communication system, which includes the foregoing network device and one or more terminal devices.

It should be understood that in the embodiments of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

According to the method provided by the embodiment of the present application, the present application further provides a computer program product, which includes: computer program code which, when run on a computer, causes the computer to perform the method in the embodiment shown in fig. 6 or fig. 11.

There is also provided a computer readable medium having stored thereon program code which, when run on a computer, causes the computer to perform the method of the embodiment shown in fig. 6 or fig. 11, in accordance with the method provided by the embodiments of the present application.

It should be particularly noted that, the time offset in the foregoing embodiments may be a time offset, or may be other time values for correcting time synchronization between the terminal device and the network device, and the time offset, or other time values are examples for understanding the technical solution of the present invention, and the present invention is not limited thereto.

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the foregoing network device and one or more terminal devices. The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the present application are generated in whole or in part when the computer program instructions are loaded or executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more collections of available media. The available media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., DVDs), or semiconductor media. The semiconductor medium may be a solid state disk.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A communication method, applied to a communication system including a terminal device and a network device, wherein the terminal device includes a wake-up radio frequency interface and a main interface, the wake-up radio frequency interface is configured to generate a trigger signal, the trigger signal is configured to activate the main interface, the main interface is configured to be used for communication between the terminal device and the network device, and the terminal device is located in at least one of a plurality of tracking areas TA controlled by a mobility management entity MME, the method includes:

the network device sends a first message to the terminal device, where the first message is used to trigger the wake-up radio frequency interface to generate the trigger signal, the first message does not carry a second identifier, and the first message carries a first identifier, where the first identifier is an identifier of the terminal device within a control range of a TA included in a first TA list, the first TA list includes at least one TA of the multiple TAs, the first identifier is generated based on the second identifier, and the length of the first identifier is smaller than that of the second identifier, and the second identifier is a unique identifier of the terminal device within the control range of the MME;

and the network equipment sends first data to the terminal equipment, wherein the format of the first data is matched with the format of the main interface.

2. The communication method according to claim 1, wherein the sequence of the first identifier is truncated from the sequence of the second identifier, or

3. The communication method according to claim 1, wherein the sequence of the first identifiers is generated based on a random generation function.

4. A communication method according to any one of claims 1 to 3, wherein before the network device sends the first message to the terminal device, the method further comprises:

the network device generates the first identifier;

5. A communication method according to any one of claims 1 to 3, wherein before the network device sends the first message to the terminal device, the method further comprises:

6. A communication method according to any of claims 1 to 3, wherein said second identity is a mobility management network element temporary mobile subscriber identity, M-TMSI, or a serving temporary mobile subscriber identity, S-TMSI, of said terminal device.

7. A method according to any of claims 1 to 3, wherein the network device is an access network device or the MME.

8. A communication method, applied to a communication system including a terminal device and a network device, wherein the terminal device includes a wake-up radio frequency interface and a main interface, the wake-up radio frequency interface is configured to generate a trigger signal, the trigger signal is configured to activate the main interface, the main interface is configured to be used for communication between the terminal device and the network device, and the terminal device is located in at least one of a plurality of tracking areas TA controlled by a mobility management entity MME, the method includes:

the terminal device receives a first message through the wakeup radio frequency interface, where the first message is used to trigger the wakeup radio frequency interface to generate the trigger signal, the first message does not carry a second identifier, and the first message carries a first identifier, where the first identifier is an identifier of the terminal device in a control range of a TA included in a first TA list, the first TA list includes at least one TA of the multiple TAs, the first identifier is generated based on the second identifier, and the length of the first identifier is smaller than that of the second identifier, and the second identifier is a unique identifier of the terminal device in the control range of the MME;

and the terminal equipment receives first data sent by the network equipment through the main interface, wherein the format of the first data is matched with that of the main interface.

9. The communication method according to claim 8, wherein the sequence of the first identifier is truncated from the sequence of the second identifier, or

10. The communication method according to claim 8, wherein the sequence of the first identifiers is generated based on a random generation function.

11. The communication method according to any one of claims 8 to 10, wherein before the terminal device receives the first message through the wake-up radio frequency interface, the method further comprises:

and the terminal equipment sends indication information for requesting to distribute the first identifier to the network equipment.

12. The communication method according to any one of claims 8 to 10, wherein before the terminal device receives the first message through the wake-up radio frequency interface, the method further comprises:

and the terminal equipment receives the indication information of the first identifier sent by the network equipment.

13. A communication method according to any one of claims 8 to 10, wherein the first identity is a cell radio network temporary identity, C-RNTI, of the terminal device when the terminal device is in a connected state.

14. A method according to any one of claims 8 to 10, wherein said second identity is a mobility management network element temporary mobile subscriber identity, M-TMSI, or a serving temporary mobile subscriber identity, S-TMSI, of said terminal device.

15. A network device, characterized in that the network device comprises a transceiver, a processor for controlling the transceiver to transceive signals, and a memory for storing a computer program, the processor being adapted to retrieve from the memory and to run the computer program such that the network device performs the method according to any one of claims 1 to 7.

16. A terminal device, characterized in that the terminal device comprises a transceiver, a processor for controlling the transceiver to transceive signals, and a memory for storing a computer program for retrieving from the memory and executing the computer program, so that the network device performs the method according to any one of claims 8 to 14.

17. A communication system, comprising:

the network device of any one of claims 1 to 7; and

the terminal device of any one of claims 8 to 14;

the terminal device at least comprises a wake-up radio frequency interface and a main interface, wherein the wake-up radio frequency interface is used for generating a trigger signal, the trigger signal is used for activating the main interface, the main interface is used for communication between the terminal device and the network device, and the terminal device is located in at least one TA in a plurality of tracking areas TA controlled by the MME.

18. A computer-readable storage medium storing computer instructions which, when executed on a computer, cause the computer to perform the communication method of any one of claims 1 to 14.