CN110351854B - Configuration information indication method and communication device - Google Patents

Configuration information indication method and communication device Download PDF

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Publication number
CN110351854B
CN110351854B CN201810654254.3A CN201810654254A CN110351854B CN 110351854 B CN110351854 B CN 110351854B CN 201810654254 A CN201810654254 A CN 201810654254A CN 110351854 B CN110351854 B CN 110351854B
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bwp
configuration
terminal device
state
indication information
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CN110351854A (en
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黎建辉
杜振国
庄宏成
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2019/080951 priority Critical patent/WO2019192456A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

Abstract

The embodiment of the application discloses a configuration information indicating method, which is used for reducing communication time delay. The method comprises the following steps: the method comprises the steps that terminal equipment receives a wakeup signal WUS sent by network equipment, wherein the wakeup signal is used for waking up a main communication interface of the terminal equipment and comprises bandwidth part BWP indication information; the terminal device determines a target BWP according to the BWP indication information; the terminal device communicates with the network device using the target BWP. The application also discloses a terminal device for reducing the communication time delay.

Description

Configuration information indication method and communication device
The present application claims priority from a chinese patent application entitled "a method, apparatus, and system for indicating communication resources of a low power consumption device" filed by the chinese patent office on 04/2018 with application number 201810301975.6, the entire contents of which are incorporated herein by reference.
Technical Field
The present application relates to the field of communications technologies, and in particular, to a configuration information indication method and a communications apparatus.
Background
For a User Equipment (UE) configured with a wake-up radio/wake-up receiver (WUR) module, when a base station has no data to send to the UE and the UE has no data transmission, a main communication interface of the UE is in an off state, and a WUR interface is in an active state or an intermittent active state. When the base station has data to transmit to the UE, a wake-up signal is firstly transmitted to the WUR interface of the UE so as to enable the UE to wake up the own main communication interface. After waking up the own main communication interface, the UE selects different procedures to access the network according to whether the UE is in a Radio Resource Control (RRC) connected state or an RRC idle state.
In a New Radio (NR) network of the fifth generation (5th-generation, 5G), a UE needs to acquire bandwidth part (BWP) configuration information of the network to know which channel to access the network. If the UE is in the RRC connection state before awakening the main communication interface from the WUR activation state, a random access flow needs to be initiated on the BWP indicated by the network, and then the UE is accessed to the network to perform corresponding data interaction; if the UE is in the RRC idle state before waking up the host communication interface from the WUR active state, it may need to go through a cell search procedure and a random access procedure to access the network.
Since the UE enters the WUR active state from the closing of the host communication interface, and then wakes up the host communication interface, the BWP configuration of the cell may change. No matter whether the UE is in the RRC connected state or the RRC idle state, the change of the BWP configuration of the cell may cause a problem that the UE cannot successfully access the network, and the UE must go through a cell search and random access process again, which may cause a certain delay problem.
Disclosure of Invention
The embodiment of the application provides a configuration information indication method and a communication device, which are used for reducing communication time delay.
In view of this, a first aspect of the present application provides a method for indicating configuration information, including: the terminal device receives a wake-up signal sent by the network device, the wake-up signal including BWP indication information, and determines a target BWP according to the BWP indication information, and communicates with the network device using the target BWP.
Note that the terminal device in this implementation is configured with a WUR module, and when the WUR module is in an active state, the terminal device receives a wake-up signal via the WUR module. It should be further noted that the target BWP refers to the BWP indicated by the network device to the terminal device for communication after waking up.
In this implementation, when the network device has data to send to the terminal device, a wake-up signal is sent to the terminal device, and the wake-up signal carries the BWP indication information, and after receiving the wake-up signal, the terminal device may determine a target BWP according to the BWP indication information in the wake-up signal, and use the target BWP to communicate with the network device. That is, in the present application, indication information corresponding to the BWP to be used by the terminal device after waking up may be carried in the wake-up signal, and after waking up the main communication interface, the terminal device may directly know, according to the indication information in the wake-up signal, which segment of BWP is to be used for communication after waking up, without performing cell search and random access, thereby reducing communication delay of the terminal device.
In one possible implementation, the BWP indication information is used to indicate a BWP type, that is, the BWP indication information includes indication information of the BWP type, where the BWP type includes: a default state BWP or an initial state BWP; the terminal device may determine the target BWP by: the terminal device determines the BWP corresponding to the BWP type indicated by the BWP indication information in the BWP configuration as the target BWP.
The present implementation provides a way of indicating a target BWP, improving the realizability of the scheme.
In one possible implementation manner, the terminal device is in the RRC connected state, and the BWP indication information includes the BWP index identifier, the terminal device may determine the target BWP by: the terminal device determines that the BWP corresponding to the BWP index identification in the BWP configuration corresponding to the cell in which the terminal device is positioned is the target BWP.
It should be noted that, in this implementation, the BWP index identifies one or more BWPs in a BWP configuration (a BWP configuration of a certain type) corresponding to a certain cell.
The present implementation provides another way of indicating the target BWP, increasing the flexibility of the scheme.
In one possible implementation manner, the BWP indication information includes a global BWP configuration index identifier, and the terminal device may determine the target BWP by: the terminal device determines the global BWP configuration index in the network to identify the corresponding BWP configuration, and determines one or more segments of BWP in the BWP configuration as the target BWP.
It should be noted that the BWP configurations (and their parameters) of all cells in the network are of a limited set, and the global BWP configuration index is used to identify a certain type of BWP configuration in the limited set.
The present implementation provides another way of indicating the target BWP, increasing the flexibility of the scheme.
In a possible implementation manner, the terminal device is in an RRC idle state, and after determining the BWP configuration corresponding to the global BWP configuration index identifier in the network, the terminal device may communicate with the network device in the following manner: the terminal device establishes an RRC connection with the network device using initial state BWP in the BWP configuration.
The implementation mode provides a mode that the terminal device communicates with the network device through the indicated target BWP, and the realizability of the scheme is improved.
In a possible implementation manner, the BWP indication information further includes a BWP index identifier or BWP type indication information in addition to the global BWP configuration index identifier, and after determining the BWP configuration corresponding to the global BWP configuration index identifier in the network, the terminal device may communicate with the network device by: the terminal device transmits the service data with the network device by using the BWP corresponding to the BWP index identification or the BWP type in the BWP configuration.
The present implementation provides another way for the terminal device to communicate with the network device via the indicated target BWP, improving the flexibility of the scheme.
In one possible implementation, the BWP indication information includes BWP configuration information; the terminal device may determine the target BWP by: the terminal device determines the BWP corresponding to the BWP configuration information as the target BWP.
The detailed configuration information of the BWP indicated by the configuration information in this implementation includes: system set parameters, bandwidth, frequency domain location, etc. The BWP configuration information includes configuration information of each BWP in the BWP configuration, and may also include configuration information of one or more BWPs in the BWP configuration, such as configuration information of an initial BWP, configuration information of a default BWP, and the like.
The present implementation provides another way of indicating the target BWP, increasing the flexibility of the scheme.
A second aspect of the present application provides a method for indicating configuration information, including: when the network device determines that the primary communication interface of the terminal device needs to be woken up, the network device determines a corresponding first BWP configuration after the terminal device wakes up the primary communication interface, and then sends a wake-up signal to the terminal device, where the wake-up signal is used to wake up the primary communication interface and includes BWP indication information, and the terminal device may determine a target BWP for communicating with the network device according to the BWP indication information, where the target BWP is the BWP in the first BWP configuration.
In this implementation, when the network device needs to wake up the main communication interface of the terminal device, that is, when the network device has data to send to the terminal device, a wake-up signal is sent to the terminal device, and the wake-up signal carries the BWP indication information, and after receiving the wake-up signal, the terminal device may determine a target BWP according to the BWP indication information in the wake-up signal, and use the target BWP to communicate with the network device. That is, in the present application, indication information corresponding to the BWP to be used by the terminal device after waking up may be carried in the wake-up signal, and after waking up the main communication interface, the terminal device may directly know, according to the indication information in the wake-up signal, which segment of BWP is to be used for communication after waking up, without performing cell search and random access, thereby reducing communication delay of the terminal device.
In one possible implementation, the terminal device is in the RRC connected state, and the network device indicates, to the terminal device, the BWP used after waking up the primary communication interface through the BWP index identifier, that is, the BWP indication information includes the index identifier of the target BWP.
The present implementation provides a way of indicating a target BWP, improving the realizability of the scheme.
In one possible implementation, the network device indicates, to the terminal device, a corresponding BWP configuration (a first BWP configuration) after waking up the primary communication interface through the global BWP configuration index identifier, so that the terminal device communicates with the network device using the BWP in the first BWP configuration, that is, the BWP indication information includes the global BWP configuration index identifier corresponding to the first BWP configuration.
The present implementation provides a way of indicating BWP configuration, improving the flexibility of the scheme.
In one possible implementation manner, the BWP indication information further includes, in addition to the global BWP configuration index identifier corresponding to the first BWP configuration, BWP type indication information for indicating the terminal device to use a target BWP corresponding to the BWP type in the first BWP configuration to communicate with the network device; or the BWP indication information further includes a BWP index id for instructing the terminal device to communicate with the network device using the target BWP corresponding to the BWP index id in the first BWP configuration.
The present implementation provides a way to indicate the target BWP, improving the flexibility of the scheme.
In a possible implementation manner, the following process may be performed before the network device sends the wake-up signal to the terminal device: the network device determines whether a network configuration state corresponding to the first BWP configuration changes with respect to a network configuration state corresponding to the second BWP configuration, and if so, the network device determines whether an initial state BWP in the first BWP configuration is the same as an initial state BWP in the second BWP configuration, and if not, the network device determines that the initial state BWP in the first BWP configuration is a target BWP, that is, the BWP indication information includes at least one of the following: a BWP index identifier corresponding to an initial BWP in a first BWP configuration, configuration information of the initial BWP in the first BWP configuration, and a global BWP configuration index identifier corresponding to the first BWP configuration; if the BWP indication information is the same as the target BWP, the network device determines that the initial BWP in the second BWP configuration is the target BWP, and the BWP indication information includes at least one of the following information: the BWP type indication corresponding to the initial BWP in the initial BWP configuration and the BWP index indication corresponding to the initial BWP in the second BWP configuration.
It should be noted that, in this implementation manner, the second BWP configuration refers to a corresponding BWP configuration before the network device enters the sleep state; the network configuration state specifically includes: BWP partition information and/or system parameter set information corresponding to each BWP.
In this implementation, before the network device indicates the target BWP to the terminal device, if the network configuration state is not changed, the network device may determine whether the initial BWP is changed, and if not, use the original initial BWP for communication, i.e., use the BWP in the BWP configuration (second BWP configuration) that the terminal device has acquired the BWP for communication, which may reduce signaling resources.
In a possible implementation manner, when the network device determines that the network configuration state corresponding to the first BWP configuration does not change with respect to the network configuration state corresponding to the second BWP configuration, the network device further determines whether the default BWP in the first BWP configuration is the same as the default BWP in the second BWP configuration, and if the default BWP in the first BWP configuration is the same as the default BWP in the second BWP configuration, that is, the BWP indication information includes at least one of the following information: a BWP type indication corresponding to the default BWP, or an index identification corresponding to the default BWP in the second BWP configuration.
In this implementation, before the network device indicates the target BWP to the terminal device, if the network configuration state is not changed and the default BWP is not changed, the original default BWP is used for communication, i.e. the terminal device already acquires the BWP in the BWP configuration (second BWP configuration) for communication, so that the signaling resources can be reduced.
A third aspect of the present application provides a communication device, which may be a terminal or a chip in the terminal. The communication device has a function of implementing each implementation of the first aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.
In one possible implementation manner, when the communication apparatus is a terminal device, the terminal device includes: a processing unit, which may be for example a processor, and a communication unit, which may be for example a transceiver comprising radio frequency circuitry, optionally the terminal further comprising a storage unit, which may be for example a memory. When the terminal includes a storage unit, the storage unit is configured to store a computer execution instruction, the processing unit is connected to the storage unit, and the processing unit executes the computer execution instruction stored in the storage unit, so that the terminal executes the configuration information indication method according to any implementation manner of the first aspect.
In another possible implementation, when the communication device is a chip in a terminal, the chip includes: a processing unit, which may be for example a processor, and a communication unit, which may be for example an input/output interface, a pin or a circuit, etc. The processing unit may execute a computer execution instruction stored in the storage unit, so as to enable a chip in the terminal to execute the configuration information indication method according to any implementation manner of the first aspect. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the terminal, such as a read-only memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.
The processor mentioned in any of the above embodiments may be a general Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling program execution of the configuration information indication method according to the implementation manners of the first aspect.
A fourth aspect of the present application provides a communication device, which may be a base station or a chip in the base station. The communication device has a function of implementing each implementation of the second aspect described above. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.
In one possible implementation, when the communication device is a base station, the base station includes: a processing unit, which may be for example a processor, and a communication unit, which may be for example a transceiver comprising radio frequency circuitry, optionally the base station further comprises a storage unit, which may be for example a memory. When the base station includes a storage unit, the storage unit is configured to store a computer execution instruction, the processing unit is connected to the storage unit, and the processing unit executes the computer execution instruction stored in the storage unit, so that the base station executes the configuration information indication method according to any implementation manner of the second aspect.
In another possible implementation manner, when the communication device is a chip in a base station, the chip includes: a processing unit, which may be for example a processor, and a communication unit, which may be for example an input/output interface, a pin or a circuit, etc. The processing unit may execute the computer execution instructions stored in the storage unit, so as to make the chip in the base station execute the configuration information indication method described in any implementation manner of the second aspect. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the base station, such as a read-only memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.
The processor mentioned in any of the above embodiments may be a general Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling program execution of the configuration information indication method of each implementation of the second aspect.
In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, configured to store computer software instructions for the terminal device, and when the computer software instructions are executed on a computer, enable the computer to perform the configuration information indication method of any one of the first aspects.
In a sixth aspect, the present application provides a computer program product containing instructions, which when run on a computer, enable the computer to perform the configuration information indication method of any one of the first aspects.
In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, configured to store computer software instructions for the terminal device, and when the computer software instructions are executed on a computer, the computer is enabled to execute the configuration information indication method in any one of the second aspects.
In an eighth aspect, the present application provides a computer program product containing instructions, which when run on a computer, enables the computer to execute the signal configuration information indication method of any one of the second aspects.
According to the technical scheme, the embodiment of the application has the following advantages:
in this embodiment, when the network device sends data to the terminal device, a wake-up signal is sent to the terminal device, and the wake-up signal carries BWP indication information, and after receiving the wake-up signal, the terminal device may determine a target BWP according to the BWP indication information in the wake-up signal, and communicate with the network device using the target BWP. That is, in the present application, indication information corresponding to the BWP to be used by the terminal device after waking up may be carried in the wake-up signal, and after waking up the main communication interface, the terminal device may directly know, according to the indication information in the wake-up signal, which segment of BWP is to be used for communication after waking up, without performing cell search and random access, thereby reducing communication delay of the terminal device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present application.
FIG. 1 is a schematic diagram of a configuration information indication system in an embodiment of the present application;
FIG. 2 is a diagram of a wakeup window of a WUR module intermittently in an active state;
fig. 3 is a schematic diagram of a terminal device acquiring a BWP configuration;
FIG. 4 is a flowchart of an embodiment of a method for indicating configuration information according to an embodiment of the present application;
FIG. 5 is a flowchart illustrating a method for determining a target BWP by a network device according to an embodiment of the present application;
FIG. 6 is a flowchart of an embodiment of a method for indicating configuration information according to an embodiment of the present application;
FIG. 7 is a diagram illustrating BWP index identification in an embodiment of the present application;
FIG. 8 is a flowchart of an embodiment of a method for indicating configuration information according to an embodiment of the present application;
fig. 9 is a schematic diagram of a global BWP configuration index identifier in an embodiment of the present application;
FIG. 10 is a flow chart of one embodiment of a method for indicating configuration information in an embodiment of the present application;
fig. 11 is a schematic diagram of a global BWP configuration index identifier in an embodiment of the present application;
FIG. 12 is a schematic diagram of an embodiment of a terminal device in the embodiment of the present application;
FIG. 13 is a diagram of an embodiment of a network device in an embodiment of the present application;
fig. 14 is a schematic structural diagram of a communication device in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the above-described drawings (if any) are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a global system for mobile communication (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, a Frequency Division Duplex (FDD) system, a Time Division Duplex (TDD) system, a universal mobile telecommunications system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, or a fifth-generation mobile telecommunications technology (5-generation, 5G), and so on, which are specific examples of the embodiments and are not limited in this application.
It should be understood that the network device in this embodiment is an entity used by a network side to send or receive a signal, and specifically may be a base station or other devices, where the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, a base station (nodeB) in WCDMA, an evolved node B (eNB or e-nodeB) in LTE, or a base station in 5G and subsequent evolved communication systems, and this embodiment of the present invention is not limited thereto.
It should be understood that the terminal device in the embodiment of the present application includes, but is not limited to, a Mobile Station (MS), a User Equipment (UE), a mobile terminal (mobile terminal), a mobile phone (mobile telephone), a handset (handset), a portable device (portable equipment), and the like, and the terminal device may communicate with one or more core networks through a Radio Access Network (RAN), for example, the terminal device may be a mobile phone (or referred to as a "cellular" phone), a computer with a wireless communication function, and the terminal device may also be a portable, pocket, hand-held, computer-embedded, or vehicle-mounted mobile apparatus.
For ease of understanding, certain terms referred to in this application are described below.
Wake-up radio (WUR) module: the wake-up radio is also called a wake-up receiver (WUR), and for convenience of description, the embodiments of the present application are collectively referred to as the wake-up radio. A WUR module refers to a module for device wake-up, also known as a WUR module or WUR interface.
Main communication interface (main radio): the module for data communication, which may also be referred to as a master module, a master interface or master communication module, such as an LTE interface, an NR interface, a wireless-fidelity (Wi-Fi) interface, a bluetooth interface, etc.
Wake Up Signal (WUS): the signal which can be received and decoded by the wake-up radio frequency, such as a wake-up frame, a synchronization frame, a wake-up packet, etc.
Bandwidth Part (Bandwidth Part, BWP): the high frequency band of a cell is divided into a plurality of sub-bandwidths, and each sub-bandwidth includes a certain parameter set (numerology) characteristic. Specifically, the bandwidth part may be divided into three types, an initial bandwidth part (initial BWP), a default bandwidth part (default BWP), and an active bandwidth part (active BWP). Wherein, the initial state BWP is used for initiating the bandwidth part of the upstream access or the downstream access; active BWP refers to a large bandwidth portion in an active state for high speed data transmission; and the default state BWP is used for default configuration, and the UE falls back to the default state BWP for service after the activated state BWP is deactivated. The default-state BWP may be equal to the initial-state BWP when not configured. The default BWP may be configured to be equal to the initial BWP or the BWP left after the initial/active BWP is removed.
To facilitate understanding of the embodiment of the present application, a system architecture to which the method for configuring information is applied in the present application is introduced first, as shown in fig. 1, the system includes a base station 101 and a UE 102, where the base station is capable of sending a wake-up signal (e.g., a wake-up frame, a synchronization frame, etc.) to the UE 102; the UE 102 is configured with a WUR module and a master module, and the WUR module enables the UE 102 to receive a wake-up signal sent by the base station 101 and wake up the master module according to the wake-up signal.
The fact that the UE configures the WUR module is that the UE introduces a WUR interface (WUR module) on the basis of configuring a traditional host interface (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 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 an internal signal of the UE 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 module 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.
The WUR module of the UE may be in a receiving state continuously or intermittently, and the application is not limited in this respect. Specifically, the WUR module of the UE is continuously in a receiving state, that is, the WUR of the UE is always in a monitoring state, so that the base station can wake up the UE at any time, and the wake-up delay can be effectively reduced, but this may increase the energy consumption of the UE. The WUR module of the UE is intermittently in a receiving state, that is, the WUR module of the UE is intermittently in an active state, and a time window in which the WUR module is in the active state is referred to as a wakeup window (wakeup window) in this application, and the occurrence of the wakeup window is generally regular, so that the base station can know when the WUR of the UE can receive a wakeup signal, for example, the WUR is in the active state for 2ms every 100ms, as shown in fig. 2. When the base station has data to send to the UE, the base station may send a wake-up signal in a wake-up window of the UE, thereby waking up a main communication module of the UE. 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.
It should be noted that the base station logically also includes a main module and a WUR module, but for the current 3rd generation partnership project (3 GPP) standard, the main module is often an Orthogonal Frequency Division Multiplexing (OFDM) wideband transmitter, and the wake-up signal of the WUR may be a narrowband signal (to reduce the receiving power consumption of the WUR), and for the sake of reducing the cost and simplifying the structure, the OFDM wideband transmitter may be used to generate the narrowband WUR wake-up signal. For example, a part of subcarriers of the OFDM signal is left empty and the signal is transmitted only on the narrowband corresponding to the WUR wake-up signal, so as to generate a narrowband signal, which is an example of generating a WUR narrowband signal by using an OFDM wideband transmitter, so the base station in fig. 1 only includes one module. It should be noted that, in the specific implementation of the base station, the master module and the WUR module may be implemented separately, that is, the base station side in fig. 1 may also include the master module and the WUR module at the same time. In addition, both the base station and the UE in fig. 1 have only one antenna, which mainly considers that the main module and the WUR module can share the same antenna when using the same or close frequency band carrier, so as to save cost and simplify the device structure. Of course, it is obviously also possible for the master module and the WUR module to use different antennas, respectively. When the main module and the WUR module use different frequency band carriers with large distance in the frequency domain, the main module and the WUR module should be configured with different antennas. For example, the main module uses the 6GHz band, and the WUR module uses the 1.8GHz band, and the two should use different antennas.
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. However, since the conventional main interface signal (e.g. LTE/NR signal) employs OFDM modulation, turbo code/Low Density Parity Check (LDPC) code/polar code (polar code) channel coding, etc. at the transmitting end, the receiving end needs to perform complex signal processing operations such as Fast Fourier Transform (FFT) and Forward Error Correction (FEC) decoding, which consume a large amount of energy. Therefore, the UE can reduce power consumption using the WUR reception signal compared to using the master module to receive the signal. In addition, in some schemes, for reasons of cost saving and design simplification, the WUR interface of the UE often only supports the reception capability of the wake-up signal, and does not need to support the transmission capability. In the embodiment of the present application, the WUR interface of the UE may or may not support signaling, and is not particularly limited.
It should be particularly noted that in the embodiment of the present application, a sending end of the wake-up signal may be a base station, and a receiving end is a terminal device equipped with a WUR, such as a mobile phone, a sensor, and the like; the sending end of the wake-up signal can also be terminal equipment, such as a mobile phone, and the receiving end is other terminal equipment equipped with a WUR, such as an intelligent watch, a bracelet and the like; the sending end of the wake-up signal can also be a terminal device, such as a mobile phone, and the receiving end is a base station equipped with a WUR. 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.
In some aspects, the manner in which the terminal device obtains the BWP configuration is shown in fig. 3. When a terminal device is in a Radio Resource Control (RRC) idle state, it needs to complete network access after completing two procedures of cell search and random access, specifically, the cell search process first searches for a primary synchronization/secondary synchronization signal, and then obtains the currently most important system message by decoding a Physical Broadcast Channel (PBCH), where the system message includes an initial bwp (initial uplink bwp) (possibly also configuration of an initial bwp (initial downlink bwp) for uplink access). Subsequently, the UE initiates a random access procedure, and after entering an RRC connected state, acquires a complete BWP configuration. After the terminal device obtains the complete BWP configuration, when the system has no explicit instruction notification, the terminal device may consider that the current BWP configuration has not changed, and if the BWP configuration has changed, according to the specific situation of the BWP configuration change, different processing flows may be triggered.
However, the introduction of the WUR module may cause a delay for the WUR module to wake up the host communication interface, and the delay is not fixed, which may affect the timeliness of the related control signaling received by the UE. The influence of the wake-up delay of the WUR module is a non-negligible factor for scenes with high requirements for low delay, such as ultra reliable & low latency communication (URLLC), etc., and if it is desired to use the WUR technology in these application scenes, it is necessary to shorten the delay generated by the WUR module as much as possible to meet the requirements of the scenes. Therefore, the embodiment of the application provides a configuration information indication method and a communication device, which can reduce communication delay between terminal equipment and a base station. Referring to fig. 4, a method for indicating configuration information in the present application is described first, where an embodiment of the method for indicating configuration information in the present application includes:
401. the network device determines a corresponding first BWP configuration after the terminal device wakes up at the main communication interface.
After the terminal device configured with the WUR module enters a sleep state (i.e., a communication interface is in a live state), when the network device determines that a main communication interface of the terminal device needs to be awakened, the network device determines the BWP configuration corresponding to the terminal device after the main communication interface is awakened. For convenience of description, in this embodiment, the BWP configuration corresponding to the terminal device after waking up is referred to as a first BWP configuration, and the BWP configuration corresponding to the terminal device entering the sleep state is referred to as a second BWP configuration.
402. The network device sends a wake-up signal to the terminal device.
After determining the first BWP configuration, the network device selects one or more BWPs from the first BWP configuration, and instructs the terminal device to use the BWP (target BWP) for communication through the BWP indication information, where the BWP indication information is carried in the wake-up signal, that is, in this embodiment, after determining the first BWP configuration, the network device sends a wake-up signal containing the BWP indication information to the terminal device to instruct the terminal device to wake up the primary communication interface and to use the target BWP for communication with the network device.
In this embodiment, the BWP (i.e., the target BWP) indicated by the network device through the indication information may be an uplink bandwidth part (UL BWP), a downlink bandwidth part (DL BWP), or a pair of a downlink BWP and an uplink BWP (DL/UL BWP pair), and the present application is not limited in this embodiment.
In this embodiment, the network device may instruct the terminal device which segment BWP or segments BWPs to use for communication through at least one of the following information (i.e., the BWP indication information includes at least one of the following information): BWP index identification, global BWP configuration index identification, BWP configuration information, and BWP type indication information.
The BWP index identifier is used to identify one or more segments of BWPs in the BWP configuration corresponding to a certain cell, and specifically may include an index number of the BWP, or an identifier having a mapping relationship with the index number of the BWP, or other information that can identify the BWP, which is not limited herein.
The type of BWP configuration (and parameters thereof) of all cells in the network is a limited set, and the global BWP configuration index is used to identify a certain type of BWP configuration, which may specifically include an index number of a certain type of BWP configuration, or an identifier having a mapping relationship with an index number of a certain type of BWP configuration, or other information that may identify a certain type of BWP configuration, which is not limited herein. For example,
the BWP configuration information refers to complete configuration information of one or more BWPs in the BWP configuration, and may be, for example, complete configuration information of an initial BWP in the BWP configuration, complete configuration information of a default BWP, and the like, where the complete configuration information may include information of a system parameter set, bandwidth partition, frequency domain position of the BWP, and the like corresponding to the BWP configuration.
The BWP type indication information is used to indicate which type of BWP is used for communication by the terminal device in the BWP configuration, or indicate what type of BWP is in a segment of the terminal device, including an indication of the initial BWP type, an indication of the default BWP type, and an indication of the active BWP type.
As a possible implementation manner, the terminal device is in an RRC connected state when entering the dormant state, and when the network device needs to wake up the terminal device, the network device may instruct the terminal device to use one or more segments of BWP for communication through the BWP index identifier, that is, the BWP indication information includes: the BWP index corresponding to the target BWP is identified.
As a possible implementation manner, after determining the first BWP configuration corresponding to the terminal device, the network device may directly indicate the first BWP configuration to the terminal device, that is, the BWP indication information includes: and the global BWP configuration index corresponding to the first BWP configuration is identified.
As a possible implementation manner, after determining the first BWP configuration corresponding to the terminal device, the network device may indicate the first BWP configuration to the terminal device, and specify that the terminal device communicates with the terminal device using one or more segments of the first BWP configuration, that is, the BWP indication information includes, in addition to the global BWP configuration index identifier corresponding to the first BWP configuration, the BWP type indication information or the BWP index identifier corresponding to the target BWP.
As a possible implementation manner, after determining the first BWP configuration corresponding to the terminal device, the network device may directly indicate one or more segments of BWPs in the first BWP configuration to the terminal device, that is, the BWP indication information includes at least one of the following information: configuration information of a default state BWP, configuration information of an initial state BWP, and configuration information of an active state BWP.
Specifically, the terminal device is in the RRC connected state when entering the dormant state, and the network device may specifically execute the flow shown in fig. 5 after determining the first BWP configuration:
and S1, judging whether the network configuration state changes, if not, executing step S2 or step S3, and if so, executing step S6.
When the network device needs to wake up the terminal device, it is determined whether the current network configuration state changes from the network configuration state before the terminal device enters the sleep state, if not, step S2 or step S3 is executed, and if so, step S6 is executed.
S2, determining to communicate the BWP of the second BWP configuration as an active BWP with the end device.
When the network configuration state is not changed, the network device may designate a segment of BWP in the second BWP configuration as an active BWP for communication, and the BWP indication information carried by the wake-up signal sent by the network device to the terminal device includes an index identifier of the segment of BWP or complete configuration information of the segment of BWP.
S3, determining whether the default state BWP is changed, if yes, executing step S4, and if not, executing step S5.
When the network configuration state is not changed, the network device may further determine whether the default state BWP corresponding to the terminal device after waking up changes with respect to the default state BWP before the terminal device enters the hibernation state (i.e. whether the default state BWP in the first BWP configuration is the same as the default state BWP in the second BWP configuration), if so, perform step S4, and if not, perform step S5.
S4, determining to communicate the BWP of the first BWP configuration as the default BWP with the end device.
When the default-state BWP changes, the network device may determine to use the default-state BWP in the first BWP configuration for communication, and the BWP indication information carried in the wake-up signal sent by the network device to the terminal device includes: the BWP index corresponding to the default BWP, or the complete configuration information of the default BWP.
It should be noted that, when the default-state BWP changes, the network device may also not use the default-state BWP communication in the first BWP configuration, but communicate from any one BWP in the first BWP configuration as the active-state BWP, and at this time, the BWP indication information may include: the BWP index corresponding to the segment BWP identifies or the complete configuration information of the segment BWP.
S5, determining to communicate with the end device using the default-state BWP in the second BWP configuration.
When the default-state BWP is not changed, the network device may determine to use the default-state BWP in the second BWP configuration for communication, and the BWP indication information carried in the wake-up signal sent by the network device to the terminal device includes: the BWP type indication corresponding to the default BWP, or the index identification corresponding to the default BWP, or the complete configuration information of the default BWP.
S6, judging whether the initial state BWP changes, if yes, executing step S7, if no, executing step S8.
When the network configuration state changes, the terminal device needs to reacquire the BWP configuration, and the network device needs to indicate to the terminal device an initial state BWP for acquiring the BWP configuration. Specifically, the network device determines whether the initial state BWP corresponding to the terminal device after waking up changes with respect to the initial state BWP before the terminal device enters the hibernation state (i.e. whether the initial state BWP in the first BWP configuration is the same as the initial state BWP in the second BWP configuration), if so, step S7 is executed, and if not, step S8 is executed.
S7, determining to communicate with the end device using the initial state BWP in the first BWP configuration.
When the initial-state BWP changes, the network device may determine to use the initial-state BWP in the first BWP configuration to communicate with the terminal device, and the BWP indication information carried in the wake-up signal sent by the network device to the terminal device may include: the index id corresponding to the initial BWP, or the complete configuration information of the initial BWP, or the global BWP configuration index id corresponding to the first BWP configuration.
S8, determining to communicate with the end device using the initial state BWP in the second BWP configuration.
When the initial state BWP is not changed, the network device may determine to use the initial state in the second BWP configuration to communicate with the terminal device, and the BWP indication information carried in the wake-up signal sent by the network device to the terminal device may include: the index corresponding to the initial state BWP identifies, or the BWP type indication corresponding to the initial state BWP, or the complete configuration information of the initial state BWP.
The terminal device is in an RRC idle state when entering the sleep state, and the network side may indicate that all cells in a maximum Time Advanced (TA) to which the terminal device belongs indicate an initial state BWP in the wake-up signal, that is, BWP indication information carried by the wake-up signal sent by the network device to the terminal device may include: the global BWP configuration index corresponding to the first BWP configuration or the complete configuration information of the initial BWP in the first BWP configuration.
403. The terminal device determines the target BWP according to the BWP indication information in the wake-up signal.
The terminal device receives the wake-up signal sent by the network device through the WUR module in the receiving state, analyzes the BWP indication field in the wake-up signal to acquire BWP indication information, and determines the target BWP according to the BWP indication information.
As a possible implementation manner, the BWP indication information includes a BWP index identifier, and after acquiring the BWP index identifier, the terminal device determines a BWP configuration corresponding to the current cell, and then determines a BWP (target BWP) in the BWP configuration corresponding to the BWP index identifier, that is, a target BWP.
Specifically, the terminal device pre-stores an index list corresponding to each cell, and after obtaining the BWP index identifier, queries the BWP corresponding to the BWP index identifier through the index list of the cell where the BWP index identifier is located. Or the terminal device acquires the index list corresponding to the cell from the network device in the process of establishing the RRC connection, and after acquiring the BWP index identifier, queries the BWP corresponding to the BWP index identifier through the index list. More specifically, if the BWP index is identified as an index number, the BWP corresponding to the index number is the target BWP; the BWP index identifier is an identifier having a mapping relationship with the index number, and the terminal device determines the index number according to the mapping relationship, and then determines the BWP corresponding to the index number as the target BWP, where the mapping relationship may be pre-configured in the terminal device, or may be notified to the terminal device by the network side during signaling interaction, or may be obtained by the terminal device through other manners, and the application is not limited in detail.
It should be noted that, in this implementation, the terminal device is in an RRC connected state, that is, an RRC connection is established with the network device, and the current cell is the cell corresponding to the network device.
As a possible implementation manner, the BWP indication information includes a global BWP configuration index identifier, and after acquiring the global BWP configuration index identifier, the terminal device determines the BWP configuration corresponding to the global BWP configuration index identifier in the network, and determines one or more segments of the BWP configuration as the target BWP. Specifically, the global BWP configuration index is identified as an index number of the BWP configuration, and the BWP configuration corresponding to the index number is the BWP configuration corresponding to the terminal device; or the global BWP configuration index identifier is an identifier having a mapping relationship with the index number of the BWP configuration, the terminal device determines the index number according to the mapping relationship, and then determines the BWP configuration corresponding to the index number as the BWP configuration corresponding to the terminal device, where the mapping relationship may be pre-configured in the terminal device, or may be notified to the terminal device during signaling interaction at the network side, or may be acquired by the terminal device in other ways, and the application is not limited in this application.
Specifically, when the terminal device is in the RRC idle state, after determining the BWP configuration corresponding to the global BWP configuration index identifier, the terminal device determines to establish an RRC connection with the network device using the initial BWP (i.e., determines that the initial BWP is the target BWP); or the BWP indication information includes, in addition to the global BWP configuration index identifier, a BWP index identifier or BWP type indication information, after determining the BWP configuration corresponding to the global BWP configuration index identifier, the terminal device determines to use the BWP corresponding to the BWP index identifier or BWP type in the BWP configuration to communicate with the network device, such as transmitting service data; or after the terminal determines the BWP configuration corresponding to the global BWP configuration index identifier, the terminal determines the BWP in the BWP configuration that communicates with the network device through other indication information sent by the network device.
As a possible implementation manner, the BWP indication information includes BWP configuration information, and after acquiring the BWP configuration information, the terminal device determines a target BWP (target BWP) corresponding to the BWP configuration information in the network.
As a possible implementation manner, the BWP indication information includes indication information of a BWP type, and after the terminal device acquires the indication information of the BWP type, the terminal device determines the BWP type corresponding to the indication information first, and then determines a BWP corresponding to the BWP type in the BWP configuration corresponding to the terminal device, that is, a target BWP. The BWP configuration corresponding to the terminal device may be a BWP configuration (second BWP configuration) acquired before the terminal device enters the hibernation state, or a BWP configuration (first BWP configuration) corresponding to the terminal device after waking up. Specifically, if the BWP indication information includes the BWP type indication information but does not include the global BWP configuration index identification, the BWP configuration corresponding to the terminal device refers to the second BWP configuration, and the terminal device determines that the BWP corresponding to the BWP type in the BWP configuration acquired before entering the hibernation state is the target BWP; if the BWP indication information includes the global BWP configuration index identifier and the BWP type indication information, the BWP configuration corresponding to the terminal device refers to the first BWP configuration, and the terminal device determines that the BWP corresponding to the BWP type in the BWP configuration corresponding to the global BWP configuration index identifier is the target BWP.
It should be noted that, in addition to the above-mentioned several implementations, the terminal device may determine the target BWP in other ways, which is not limited herein.
404. The end device communicates with the network device using the target BWP.
After receiving the wake-up signal through the WUR module, the terminal device wakes up the main communication interface according to the wake-up signal, and uses the target BWP to communicate with the network device after waking up.
As a possible implementation manner, the terminal device is in the RRC disconnected state before entering the dormant state, and after determining the target BWP, the terminal device needs to establish an RRC connection through the target BWP first and then perform transmission of service data with the network device.
Specifically, the BWP indication information includes a global BWP configuration index identifier, where the terminal device establishes an RRC connection with the network device using an initial BWP in the BWP configuration corresponding to the global BWP configuration index identifier, and then transmits the service data with the network device through an active BWP and/or a default BWP indicated by the network device, where the network device may indicate the active BWP and/or the default BWP to the terminal device through the BWP index identifier or the BWP type indication information, and the BWP index identifier or the BWP type indication information may be included in the BWP indication information or may be included in other information, which is not limited herein. Or the BWP indication information includes configuration information of the initial BWP, and the terminal device establishes an RRC connection with the network device using the BWP corresponding to the configuration information in the network.
As a possible implementation manner, if the network configuration state of the terminal device before entering the dormant state changes from the current network configuration state (i.e., the network configuration state changes), after determining the target BWP, the terminal device needs to reestablish the RRC connection through the target BWP, and then perform transmission of service data with the network device.
Specifically, the BWP indication information includes a BWP index identifier corresponding to the initial BWP, and the terminal device determines the BWP corresponding to the BWP index identifier in the BWP configuration corresponding to the current cell, and reestablishes the RRC connection through the BWP. Or the BWP indication information includes a type indication corresponding to the initial BWP, and the terminal device reestablishes the RRC connection with the network device using the initial BWP in the BWP configuration (i.e., the second BWP configuration) acquired before entering the hibernation state. Or the BWP indication information includes a type indication corresponding to the initial BWP and a global BWP configuration index identifier, and the terminal device reestablishes the RRC connection using the initial BWP in the BWP configuration (the first BWP configuration) corresponding to the global BWP configuration index identifier. Or the BWP indication information includes configuration information corresponding to the initial BWP, and the terminal device reestablishes the RRC connection using the BWP corresponding to the configuration information in the network.
As a possible implementation manner, when the terminal device is in the RRC connected state, the network configuration state before entering the dormant state is unchanged from the current network configuration state (i.e., the network configuration state is not changed), and the terminal device determines the target BWP, the terminal device may directly perform transmission of the service data with the network device through the target BWP.
Specifically, the BWP indication information includes an index identifier of the active BWP, and the terminal device communicates, as the active BWP, the BWP corresponding to the index identifier of the BWP in the BWP configuration corresponding to the current cell with the network device; or the BWP indication information includes an index identifier of the default BWP, and the terminal device communicates the BWP corresponding to the index identifier of the BWP in the BWP configuration corresponding to the current cell with the network device as the default BWP; or the BWP indication information includes a type indication of the default-state BWP, and the terminal device communicates with the network device using the default-state BWP in the acquired BWP configuration (i.e., the second BWP configuration) before entering the hibernation state; or the BWP indication information includes the global BWP configuration index identifier and the BWP index identifier, the terminal device transmits the service data between the network device and the BWP corresponding to the BWP index identifier in the BWP configuration corresponding to the global BWP configuration index identifier; or the BWP indication information includes the global BWP configuration index identifier and the BWP type indication information, the terminal device transmits the service data between the network device and the BWP corresponding to the BWP type in the BWP configuration corresponding to the global BWP configuration index identifier.
It should be noted that, in addition to the above-mentioned several implementation manners, the terminal device may also communicate with the network device through other manners, and this is not limited herein.
In this embodiment, when the network device sends data to the terminal device, a wake-up signal is sent to the terminal device, and the wake-up signal carries BWP indication information, and after receiving the wake-up signal, the terminal device may determine a target BWP according to the BWP indication information in the wake-up signal, and communicate with the network device using the target BWP. That is, in the present application, indication information corresponding to the BWP to be used by the terminal device after waking up may be carried in the wake-up signal, and after waking up the main module, the terminal device may directly know which BWP to use for communication after waking up according to the indication information in the wake-up signal without performing cell search and random access, thereby reducing communication delay of the terminal device.
Secondly, in the embodiment of the present application, the network device may indicate the target BWP to the terminal device in multiple ways, and the terminal device may determine the target BWP in multiple ways, which improves the flexibility of the solution.
For convenience of understanding, the configuration information indication method in the embodiment of the present application is described below in a specific application scenario.
In scenario one, the UE is in an RRC connected state, and the base station indicates BWP to the UE with BWP index identification.
For the UE in the RRC connected state, the BWP configuration is semi-static, and when the base station wakes up the UE with the WUS, if the configured BWP does not change, the base station may communicate with a segment of BWP in the BWP configuration after the dedicated BWP indication field in the WUS indicates the UE to wake up the host interface, which is shown in fig. 6.
After the RRC connected state UE is configured by the semi-static BWP on the network side, when the WUR module is in a receiving state, the UE receives the WUS sent by the base station through the WUR module, wakes up a host communication interface through the WUR and uses the base station to communicate at the BWP indicated by the WUR.
As shown in fig. 7, there are 4 BWP sub-bands that can be configured by a cell, and the base station may specifically carry one or more (BWP-index) BWP indexes 0,1,2,3 configured by the cell BWP in the BWP indication field of the WUS to indicate the UE to wake up the host communication interface and then perform BWP for communication, as shown in fig. 8. In an asymmetric spectrum, the BWP index may be a pair index indicating one upstream BWP and one downstream BWP. In the symmetric spectrum, the index of the uplink BWP and the downlink BWP may be specifically indicated by an uplink BWP index (UL-BWP-index) and a downlink BWP index (DL-BWP-index). Note that the BWP configuration at the cell level may be uniform within a cell or unique for each UE.
Scenario two, whether the RRC is in the connected state or the RRC is in the idle state, the base station indicates the BWP configuration with the global BWP configuration index identification.
Whether the UE is in the RRC connected state or the RRC idle state, the network side may use the global BWP configuration index to identify the BWP configuration to be used after the UE is instructed to wake up the primary communication interface. As shown in fig. 9, the types of BWP configurations (and parameters thereof) of all cells in the network are a limited set, and when each cell wakes up a UE in an active state, a Global BWP Configuration Index (GBCI) may be specifically carried in the sent WUS to indicate, to the UE, a BWP configuration used after waking up the host communication interface, and one or more BWP index identifiers under the BWP configuration may also be carried in the WUS to indicate, to the UE, a BWP used for communication after waking up the host communication interface, where the flow is shown in fig. 10. It should be noted that, for a UE supporting the carrier aggregation technology, multiple global BWP configuration indexes may also be carried in the WUS.
It should be understood that, in this embodiment, in addition to indicating the BWP configuration by using the global BWP configuration index identifier, the network side may also carry complete BWP detailed configuration information in the WUS, where the system set parameter (Numerology), bandwidth (bandwidth), frequency domain location (frequency location) of each BWP subband in the BWP configuration are included. However, this method requires a large number of bits (bits), and in order to reduce signaling resources, the network side may also indicate the UE using the detailed configuration information of the initial BWP or indicate the UE using the detailed configuration information of the default BWP.
And in a third scenario, the base station indicates BWP configuration to the UE by using a cell identification (cell ID) whether the RRC is in a connected state or an idle state.
The network side may carry a cell ID in the WUS, and indicate BWP configuration to the UE through the cell ID, where a mapping relationship between the cell ID and the GBCI is shown in fig. 11. After waking up the host communication interface according to the WUS, the UE uses the cell ID field in the WUS, and determines, in combination with the mapping relationship with the pre-configuration or network control, the BWP configuration that can be used after waking up the host communication interface (i.e., determining the BWP configuration corresponding to the UE after waking up), and then communicates with the network device in the initial state BWP in the indicated BWP configuration.
With reference to fig. 12, a terminal device in the present application is described below, where an embodiment of the terminal device in the present application includes:
a receiving unit 1201, configured to receive a wake-up signal WUS sent by a network device, where the wake-up signal is used to wake up a main communication interface of a terminal device, and the wake-up signal includes bandwidth portion BWP indication information;
a determining unit 1202 for determining a target BWP according to the BWP indication information;
a communication unit 1203 is configured to communicate with the network device using the target BWP.
Optionally, the BWP indication information includes BWP type indication information;
the determination unit 1202 includes:
the terminal device comprises a first determining subunit, configured to determine that a BWP corresponding to the BWP type in the BWP configuration corresponding to the terminal device is a target BWP.
Optionally, the terminal device is in a radio resource control RRC connected state, and the BWP indication information includes a BWP index identifier;
the determination unit 1202 includes:
and a second determining subunit, configured to determine that, in the BWP configuration corresponding to the cell in which the terminal device is located, the BWP corresponding to the BWP index identifier is the target BWP.
Optionally, the BWP indication information includes a global BWP configuration index identifier;
the determination unit 1202 includes:
a third determining subunit, configured to determine a BWP configuration corresponding to the global BWP configuration index identifier in the network;
a fourth determining subunit, configured to determine that the BWP in the BWP configuration is the target BWP.
If the terminal device is in the RRC idle state, the communication unit 1203 includes:
an establishing subunit, configured to establish an RRC connection with a network device using an initial state BWP in a BWP configuration.
If the BWP indication information further includes a BWP index flag or BWP type indication information, the communication unit 1203 includes:
and the transmission subunit is used for transmitting the service data with the network device by using the BWP corresponding to the BWP index identification or the BWP type in the BWP configuration.
It should be noted that the flow executed by each unit corresponding to fig. 12 is similar to the flow executed by the terminal device in the embodiment of the method corresponding to fig. 4, and is not repeated here.
In this embodiment, when the network device sends data to the terminal device, a wake-up signal is sent to the terminal device, and the wake-up signal carries BWP indication information, after the receiving module 1201 of the terminal device receives the wake-up signal, the determining module 1202 may determine a target BWP according to the BWP indication information in the wake-up signal, and the communication module 1203 may communicate with the network device using the target BWP. That is, in the present application, indication information corresponding to the BWP to be used by the terminal device after waking up may be carried in the wake-up signal, and after waking up the main module, the terminal device may directly know, according to the indication information in the wake-up signal, which segment of BWP is to be used for communication after waking up without performing cell search and random access, thereby reducing communication delay of the terminal device.
Secondly, the determining module 1202 in the embodiment of the present application may determine the target BWP in various ways, which improves the flexibility of the solution.
With reference to fig. 13, a network device in the present application is introduced, and an embodiment of the network device in the present application includes:
a first determining unit 1301, configured to determine, when it is determined that a main communication interface of the terminal device needs to be woken up, a corresponding first BWP configuration after the terminal device wakes up at the main communication interface;
a sending unit 1302, configured to send a wake-up signal to the terminal device, where the wake-up signal is used to wake up the primary communication interface, and the wake-up signal includes BWP indication information, so that the terminal device communicates with the network device using the target BWP in the first BWP configuration according to the BWP indication information.
Optionally, the terminal device is in a radio resource control RRC connected state, and the BWP indication information includes a BWP index identifier corresponding to the target BWP.
Optionally, the BWP indication information includes a global BWP configuration index identifier corresponding to the first BWP configuration, where the global BWP configuration index identifier is used by the terminal device to determine the first BWP configuration. Further, in this embodiment, the BWP indication information may further include BWP type indication information, where the target BWP is a BWP corresponding to the BWP type in the first BWP configuration; alternatively, the BWP indication information further includes: the BWP index corresponding to the target BWP identifies that the target BWP is one segment of the BWP in the first BWP configuration.
Optionally, the BWP indication information includes: BWP configuration information of the first BWP configuration, the BWP configuration information including at least one of: configuration information of the default-state BWP, and configuration information of the initial-state BWP.
Optionally, the network device further includes:
a first determining unit, configured to determine whether a network configuration state corresponding to a first BWP configuration changes with respect to a network configuration state corresponding to a second BWP configuration, where the second BWP configuration is the corresponding BWP configuration before the terminal device enters the hibernation state, and the network configuration state includes: BWP partition information and/or system parameter set information corresponding to each BWP;
a second judgment unit configured to judge whether the initial state BWP in the first BWP configuration is the same as the initial state BWP in the second BWP configuration when the first judgment unit determines that the change has occurred;
a second determining unit, configured to determine, when the second determining unit determines that the BWPs are not the same, that the initial state BWP in the first BWP configuration is the target BWP, where the BWP indicating information includes at least one of: a BWP index identifier corresponding to an initial BWP in a first BWP configuration, configuration information of the initial BWP in the first BWP configuration, and a global BWP configuration index identifier corresponding to the first BWP configuration;
a third determining unit configured to determine that the initial-state BWP in the second BWP configuration is the target BWP when the second determining unit determines that the determination is the same, the BWP indicating information including at least one of: a BWP type indication corresponding to the initial BWP or a BWP index identifier corresponding to the initial BWP in the second BWP configuration;
a third judging unit configured to judge whether the default-state BWP in the first BWP configuration is the same as the default-state BWP in the second BWP configuration when the second judging unit determines that the change has not occurred;
a fourth determining unit, configured to determine that the default-state BWP in the second BWP configuration is the target BWP when the third determining unit determines that the BWP configuration is the same, wherein the BWP indication information includes at least one of: a BWP type indication corresponding to the default BWP, or a BWP index identification corresponding to the default BWP in the second BWP configuration.
It should be noted that the flow executed by each unit corresponding to fig. 13 is similar to the flow executed by the network device in the foregoing embodiment 4, and is not described herein again.
In this embodiment, when the network device sends data to the terminal device, the sending module 1302 sends a wake-up signal to the terminal device, and the wake-up signal carries BWP indication information, and after receiving the wake-up signal, the terminal device may determine a target BWP according to the BWP indication information in the wake-up signal, and use the target BWP to communicate with the network device. That is, in the present application, the network device may carry, in the wake-up signal, the indication information corresponding to the BWP to be used by the terminal device after the terminal device wakes up the main module, and the terminal device may know, directly according to the indication information in the wake-up signal, which segment of BWP is to be used for communication after the terminal device wakes up, without performing cell search and random access, thereby reducing communication delay of the terminal device.
Secondly, in the embodiment of the present application, the network device may indicate the target BWP to the terminal device in multiple ways, which improves the flexibility of the scheme.
In the above, the terminal device and the network device in the present application are introduced from the perspective of the functional module, and in the following, the terminal device and the network device in the present application are introduced from the perspective of the hardware entity, please refer to fig. 14, and the communication apparatus 1400 includes: a memory 1401, a processor 1402, a communication interface 1403, and a bus 1404;
memory 1401 may include both read-only memory and random access memory, and provides instructions and data to processor 1402. A portion of memory 1401 may also include non-volatile random access memory (NVRAM).
The memory 1401 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:
and (3) operating instructions: including various operational instructions for performing various operations.
Operating the system: including various system programs for implementing various basic services and for handling hardware-based tasks.
In a possible implementation manner, when the communication device is a terminal device, the processing unit may be a processor, the communication unit may be, for example, a transceiver, the transceiver includes a radio frequency circuit, and optionally, the terminal device further includes a storage unit, which may be, for example, a memory. When the terminal device includes a storage unit, the storage unit is configured to store computer-executable instructions, the processing unit is connected to the storage unit, and the processing unit executes the computer-executable instructions stored in the storage unit, so that the terminal device executes steps 403 and 404 in the method embodiment corresponding to fig. 4.
In another possible implementation, when the communication device is a chip in a terminal device, the processing unit may be a processor, and the communication unit may be an input/output interface, a pin, a circuit, or the like. The processing unit can execute the computer-executable instructions stored in the storage unit to make the chip in the terminal device execute steps 403 and 404 in the embodiment of the method corresponding to fig. 4. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the terminal, such as a read-only memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.
In a possible implementation manner, when the communication apparatus is a network device, the processing unit may be a processor, the communication unit may be, for example, a transceiver including a radio frequency circuit, and optionally, the network device further includes a storage unit, which may be, for example, a memory. When the network device includes a storage unit, the storage unit is configured to store computer-executable instructions, the processing unit is connected to the storage unit, and the processing unit executes the computer-executable instructions stored in the storage unit, so that the network device executes steps 401 and 402 in the method embodiment corresponding to fig. 4.
In another possible implementation, when the communication device is a chip within a network device, the processing unit may be a processor, and the communication unit may be an input/output interface, a pin, a circuit, or the like. The processing unit can execute the computer executable instructions stored in the storage unit to make the chip in the network device execute steps 401 and 402 in the embodiment of the method corresponding to fig. 4. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the terminal, such as a read-only memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.
The processor mentioned in any above may be a general-purpose Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the embodiment of the method shown in fig. 4.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, 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. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. 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 in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
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 manners. 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 integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes 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: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (28)

1. A method for indicating configuration information, comprising:
the method comprises the steps that terminal equipment receives a wakeup signal WUS sent by network equipment, wherein the wakeup signal is used for waking up a main communication interface of the terminal equipment and comprises bandwidth part BWP indication information;
the terminal device determines a target BWP according to the BWP indication information;
the terminal device communicates with the network device using the target BWP.
2. The method according to claim 1, wherein the BWP indication information is used for indicating a BWP type, and wherein the BWP type comprises: a default state BWP or an initial state BWP;
the terminal device determining a target BWP according to the BWP indication information includes:
the terminal device determines that the BWP corresponding to the BWP type in the BWP configuration corresponding to the terminal device is a target BWP.
3. The method of claim 1, wherein the terminal device is in a radio resource control, RRC, connected state; the BWP indication information includes a BWP index identification;
the terminal device determining a target BWP according to the BWP indication information includes:
and the terminal device determines that the BWP corresponding to the BWP index identification in the BWP configuration corresponding to the cell in which the terminal device is positioned is the target BWP.
4. The method according to claim 1, wherein the BWP indication information comprises a global BWP configuration index identification;
the terminal device determining a target BWP according to the BWP indication information includes:
the terminal device determines the BWP configuration corresponding to the global BWP configuration index identification in the network;
the terminal device determines the BWP in the BWP configuration as a target BWP.
5. The method of claim 4, wherein the terminal device is in an RRC idle state;
the terminal device communicating with the network device using the target BWP comprises:
and the terminal device establishes RRC connection with the network device by using the initial state BWP in the BWP configuration.
6. The method according to claim 4, wherein the BWP indication information further comprises a BWP index identification or an indication information of a BWP type, the BWP type comprising: a default state BWP or an initial state BWP;
the terminal device communicating with the network device using the target BWP comprises:
and the terminal device transmits service data with the network device by using the BWP index identification in the BWP configuration or the BWP corresponding to the BWP type.
7. The method according to claim 1, wherein the BWP indication information comprises BWP configuration information, wherein the BWP configuration information comprises at least one of: configuration information of a default state BWP, configuration information of an initial state BWP;
the terminal device determining a target BWP according to the BWP indication information includes:
and the terminal equipment determines the BWP corresponding to the BWP configuration information as a target BWP.
8. A method for indicating configuration information, comprising:
when a network device determines that a main communication interface of a terminal device needs to be awakened, the network device determines a corresponding first BWP configuration after the terminal device is awakened at the main communication interface;
the network device sends a wake-up signal to the terminal device, where the wake-up signal is used to wake up the main communication interface, and the wake-up signal includes BWP indication information, so that the terminal device communicates with the network device using a target BWP in the first BWP configuration according to the BWP indication information.
9. The method according to claim 8, wherein the terminal device is in a Radio Resource Control (RRC) connected state, and wherein the BWP indication information comprises a BWP index ID corresponding to the target BWP.
10. The method according to claim 8, wherein the BWP indication information comprises a global BWP configuration index identification corresponding to the first BWP configuration, the global BWP configuration index identification being used by the terminal device to determine the first BWP configuration.
11. The method according to claim 10, wherein the BWP indication information further comprises BWP type indication information, the BWP type comprising: a default-state BWP or an initial-state BWP, the target BWP being a BWP in the first BWP configuration corresponding to the BWP type;
alternatively, the first and second electrodes may be,
the BWP indication information further includes: the BWP index corresponding to the target BWP identifies that the target BWP is one segment of the BWP in the first BWP configuration.
12. The method according to claim 8, wherein the BWP indication information comprises: BWP configuration information of the first BWP configuration, the BWP configuration information including at least one of: configuration information of the default-state BWP, and configuration information of the initial-state BWP.
13. The method of claim 8, wherein the network device sends the wake-up signal to the terminal device before the method comprises:
the network device determines whether a network configuration state corresponding to the first BWP configuration changes with respect to a network configuration state corresponding to a second BWP configuration, where the second BWP configuration is the corresponding BWP configuration before the terminal device enters a sleep state, and the network configuration state includes: BWP partition information and/or system parameter set information corresponding to each BWP;
if the change occurs, the network device determines whether the initial BWP in the first BWP configuration is the same as the initial BWP in the second BWP configuration;
if not, the network device determines that the initial BWP in the first BWP configuration is the target BWP, where the BWP indication information includes at least one of the following information: a BWP index identifier corresponding to an initial BWP in the first BWP configuration, configuration information of the initial BWP in the first BWP configuration, and a global BWP configuration index identifier corresponding to the first BWP configuration;
if the BWP configuration is the same as the target BWP configuration, the network device determines that the initial BWP in the second BWP configuration is the target BWP, where the BWP indication information includes at least one of the following information: a BWP type indication corresponding to the initial BWP, or a BWP index identification corresponding to the initial BWP in the second BWP configuration.
14. The method of claim 13, further comprising:
if not, the network device determines whether the default state BWP in the first BWP configuration is the same as the default state BWP in the second BWP configuration;
if the BWP configuration is the same as the target BWP, the network device determines that the default BWP in the second BWP configuration is the target BWP, where the BWP indication information includes at least one of the following information: a BWP type indication corresponding to the default-state BWP, or a BWP index identification corresponding to the default-state BWP in the second BWP configuration.
15. A communications apparatus, comprising: a processing unit and a communication unit;
the communication unit is used for receiving a wakeup signal WUS sent by network equipment, the wakeup signal is used for waking up a main communication interface of the terminal equipment, and the wakeup signal comprises bandwidth part BWP indication information;
the processing unit is configured to determine a target BWP according to the BWP indication information;
the communication unit is configured to communicate with the network device using the target BWP.
16. The apparatus according to claim 15, wherein the BWP indication information is indicative of a BWP type, the BWP type comprising: a default state BWP or an initial state BWP;
the processing unit is configured to determine that a BWP corresponding to the BWP type in the BWP configuration corresponding to the terminal device is a target BWP.
17. The apparatus of claim 15, wherein the terminal device is in a radio resource control, RRC, connected state; the BWP indication information includes a BWP index identification;
the processing unit is configured to determine that a BWP corresponding to the BWP index identifier in a BWP configuration corresponding to a cell in which the terminal device is located is a target BWP.
18. The apparatus according to claim 15, wherein the BWP indication information comprises a global BWP configuration index identification;
the processing unit is configured to determine a BWP configuration corresponding to the global BWP configuration index identifier in the network, and determine that a BWP in the BWP configuration is a target BWP.
19. The apparatus of claim 18, wherein the terminal device is in an RRC idle state;
the communication unit is configured to establish an RRC connection with the network device using an initial state BWP in the BWP configuration.
20. The apparatus according to claim 18, wherein the BWP indication information further comprises BWP index identification or BWP type indication information, wherein the BWP type comprises: a default state BWP or an initial state BWP;
the communication unit is configured to transmit traffic data with the network device using the BWP corresponding to the BWP index identifier or the BWP type in the BWP configuration.
21. The apparatus according to claim 15, wherein the BWP indication information comprises BWP configuration information, the BWP configuration information comprising at least one of: configuration information of a default state BWP, configuration information of an initial state BWP;
the terminal device processing unit is configured to determine that the BWP corresponding to the BWP configuration information is a target BWP.
22. A communications apparatus, comprising: a processing unit and a communication unit;
the processing unit is configured to determine, when the network device determines that a main communication interface of the terminal device needs to be woken up, a corresponding first BWP configuration of the terminal device after the main communication interface is woken up;
the communication unit is configured to send a wake-up signal to the terminal device, where the wake-up signal is used to wake up the primary communication interface, and the wake-up signal includes BWP indication information, so that the terminal device communicates with the network device using a target BWP in the first BWP configuration according to the BWP indication information.
23. The apparatus of claim 22, wherein the terminal device is in a Radio Resource Control (RRC) connected state, and wherein the BWP indication information comprises a BWP index ID corresponding to the target BWP.
24. The apparatus of claim 22, wherein the BWP indication information comprises a global BWP configuration index identification corresponding to the first BWP configuration, and wherein the global BWP configuration index identification is used by the terminal device to determine the first BWP configuration.
25. The apparatus according to claim 24, wherein the BWP indication information further comprises BWP type indication information, the BWP type comprising: a default-state BWP or an initial-state BWP, the target BWP being a BWP in the first BWP configuration corresponding to the BWP type;
alternatively, the first and second electrodes may be,
the BWP indication information further includes: the BWP index corresponding to the target BWP identifies that the target BWP is one segment of the BWP in the first BWP configuration.
26. The apparatus of claim 22, wherein the BWP indication information comprises: BWP configuration information of the first BWP configuration, the BWP configuration information including at least one of: configuration information of the default-state BWP, and configuration information of the initial-state BWP.
27. The apparatus of claim 22,
the processing unit is further configured to determine whether a network configuration state corresponding to the first BWP configuration changes with respect to a network configuration state corresponding to a second BWP configuration, where the second BWP configuration is the corresponding BWP configuration before the terminal device enters a sleep state, and the network configuration state includes: BWP partition information and/or system parameter set information corresponding to each BWP;
if the BWP configuration is changed, judging whether the initial BWP in the first BWP configuration is the same as the initial BWP in the second BWP configuration;
if not, determining that the initial state BWP in the first BWP configuration is a target BWP, wherein the BWP indication information includes at least one of the following items: a BWP index identifier corresponding to an initial BWP in the first BWP configuration, configuration information of the initial BWP in the first BWP configuration, and a global BWP configuration index identifier corresponding to the first BWP configuration;
if the difference is equal to the preset value, determining that the initial state BWP in the second BWP configuration is the target BWP, wherein the BWP indication information comprises at least one of the following items: a BWP type indication corresponding to the initial BWP, or a BWP index identification corresponding to the initial BWP in the second BWP configuration.
28. The apparatus of claim 27,
the processing unit is further configured to determine whether a default-state BWP in the first BWP configuration is the same as a default-state BWP in a second BWP configuration when it is determined that no change has occurred;
if the difference is equal to the preset value, determining that the default-state BWP in the second BWP configuration is the target BWP, wherein the BWP indication information comprises at least one of the following items: a BWP type indication corresponding to the default-state BWP, or a BWP index identification corresponding to the default-state BWP in the second BWP configuration.
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