WO2022027677A1 - Communication method and apparatus, and computer readable storage medium - Google Patents

Abstract

Disclosed in the embodiments of the present invention are a communication method and apparatus, and a computer readable storage medium, the method comprising: determining a first paging opportunity, the first paging opportunity being a paging opportunity corresponding to a terminal device or the terminal device group in which the terminal device is located; receiving first indication information corresponding to a first paging opportunity from a network device; and when the first indication information indicates that a paging exists, receiving the paging from the network device at the first paging opportunity. In the embodiments of the present invention, the terminal device receives a paging only after receiving indication information for indicating that the paging exists, which can reduce the power consumption of the terminal device.

Description

A communication method, apparatus and computer-readable storage medium technical field

Embodiments of the present invention relate to the field of communication technologies, and in particular, to a communication method, an apparatus, and a computer-readable storage medium.

Background technique

In new radio (NR), when the terminal device is in an idle or inactive state, the terminal device will wake up periodically. After waking up, the terminal device may attempt to receive paging by listening to the physical downlink control channel (PDCCH). However, the network device does not send a page to the terminal device every time the terminal device is woken up, so that the power consumption of the terminal device is relatively large.

SUMMARY OF THE INVENTION

Embodiments of the present invention disclose a communication method, an apparatus, and a computer-readable storage medium, which are used to reduce power consumption.

A first aspect discloses a communication method. The communication method can be applied to a terminal device or a module (eg, a chip) in the terminal device. The terminal device is used as an example for description below. The communication method may include: determining a first paging opportunity, where the first paging opportunity is a paging opportunity corresponding to a terminal device or a terminal device group where the terminal device is located; receiving first indication information corresponding to the first paging opportunity from a network device; When the indication information indicates that paging exists, the paging from the network device is received at the first paging opportunity.

In this embodiment of the present invention, the terminal device may first determine the paging opportunity corresponding to the terminal device or the terminal device group where the terminal device is located, and then receive the indication information at the paging opportunity corresponding to the terminal device or the terminal device group where the terminal device is located. Only when paging is indicated, the paging from the network device is received at the paging opportunity, thereby solving the technical problem that the terminal device needs to periodically receive the paging in the prior art. Since the terminal device receives the paging only when it receives the indication information for indicating the existence of the paging, the terminal device can not receive the paging when there is no paging, which can reduce the number of times of receiving the paging , thereby reducing the power consumption of the terminal device.

As a possible implementation manner, the first indication information is used to indicate whether there is paging.

In this embodiment of the present invention, the first indication information may indicate whether there is paging, so that the terminal device can determine whether there is paging according to the indication information, which can reduce the power consumption of the terminal device.

As a possible implementation manner, the first paging opportunity is determined according to the identification of the terminal device.

In the embodiment of the present invention, since the paging opportunity is determined according to the identification of the terminal equipment, the number of pages sent to different terminal equipments on the same paging opportunity can be reduced, the wake-up times and false alarm probability of the terminal equipment can be reduced, so that the Reduce power consumption of end devices.

As a possible implementation manner, the first paging opportunity is a paging occasion (paging occasion, PO) or a paging frame.

As a possible implementation manner, the first indication information used to indicate whether there is paging includes: the first indication information is used to indicate whether there is paging in the paging opportunity within the first time window, and the first time window is the first indication information For the corresponding time window, the paging opportunities in the first time window include the first paging opportunity.

In this embodiment of the present invention, an indication message has a function of indicating whether a paging opportunity within the time window corresponding to the indication information has a function of paging, rather than indicating whether a paging opportunity has paging. It can be seen that one indication information has the function of indicating multiple paging opportunities, which can reduce the quantity of indication information and the quantity of transmission information, thereby saving transmission resources.

As a possible implementation manner, when the first paging opportunity is the first PO, the terminal device receiving the first indication information corresponding to the first paging opportunity from the network device includes: determining the first resource according to the first PO; The resource receives the first indication information from the network device.

In this embodiment of the present invention, after the terminal device determines the PO, it can determine the resource for transmitting the indication information according to the PO, so as to receive the indication information on the determined resource, and further determine whether there is paging according to the indication information. The number of times of receiving the paging can be reduced, thereby reducing the power consumption of the terminal device.

As a possible implementation manner, the first indication information is received in the first bandwidth, the paging is received in the second bandwidth, the first bandwidth is different from the second bandwidth, and the switching time from the first bandwidth to the second bandwidth is less than or equal to The first time is the maximum time required for switching from the bandwidth for receiving the first indication information to the bandwidth for receiving the paging.

In this embodiment of the present invention, the bandwidth for receiving indication information and the bandwidth for receiving paging may be different. For example, the bandwidth for receiving indication information may be smaller than the bandwidth for receiving paging, and the smaller the bandwidth, the lower the power consumption. Therefore, reducing the bandwidth for receiving indication information can reduce the power consumption of the terminal device. In addition, since the bandwidth for receiving indication information is different from the bandwidth for receiving paging, after receiving the indication information for indicating the existence of paging, the terminal device needs to perform bandwidth switching, and the time for bandwidth switching is less than or equal to that indicated by the receiving indication The maximum time required for the bandwidth of the message to be switched to the bandwidth for receiving the page, so that the terminal device can quickly switch the bandwidth to receive the page.

As a possible implementation manner, the time interval between the reception time of the first indication information and the start time of the first time window is greater than or equal to the first time.

Since the bandwidth for receiving the indication information is different from the bandwidth for receiving paging, after receiving the indication information for indicating the existence of paging, the terminal device needs to perform bandwidth switching, and the receiving time of the indication information corresponds to the start time of the corresponding time window. The time interval between them is greater than or equal to the first time, which can ensure that the terminal device has enough time to perform bandwidth switching.

As a possible implementation manner, the first indication information is received at the first bandwidth part (BWP), and the paging is received at the second BWP. The first BWP is different from the second BWP, and the first BWP is switched to the second BWP. The switching time of the BWP is less than or equal to the second time, and the second time is the maximum time required for switching from the BWP receiving the first indication information to the BWP receiving the paging.

In this embodiment of the present invention, the BWP for receiving the indication information may be different from the BWP for receiving the paging. For example, the BWP for receiving indication information may be smaller than the BWP for receiving paging, and the smaller the BWP, the lower the power consumption. Therefore, reducing the BWP for receiving indication information can reduce the power consumption of the terminal device. In addition, since the BWP that receives the indication information is different from the BWP that receives the paging, after receiving the indication information for indicating the existence of paging, the terminal device needs to perform BWP handover, and the time of the BWP handover is less than or equal to the time indicated by the receiving indication The maximum time required for the BWP of the message to switch to the BWP that receives the page, so that the terminal device can quickly perform the BWP switch to receive the page.

As a possible implementation manner, the time interval between the reception time of the first indication information and the start time of the first time window is greater than or equal to the second time.

Since the BWP for receiving the indication information is different from the BWP for receiving the paging, after receiving the indication information for indicating the existence of paging, the terminal device needs to perform BWP switching, and the receiving time of the indication information is the start time of the corresponding time window. The time interval between them is greater than or equal to the second time, which can ensure that the terminal device has enough time to perform BWP handover.

A second aspect discloses a communication method, which can be applied to a network device or a module (eg, a chip) in the network device. The following takes the network device as an example for description. The communication method may include: determining a first paging opportunity, where the first paging opportunity is a paging opportunity corresponding to the terminal equipment or the terminal equipment group where the terminal equipment is located; sending first indication information corresponding to the first paging opportunity; The device sends the paging; the first indication information is used for the terminal device to receive the paging at the first paging opportunity when the first indication information indicates that the paging exists.

In the embodiment of the present invention, the network device may first determine the paging opportunity corresponding to the terminal device or the terminal device group where the terminal device is located, and then may send the indication information corresponding to the paging opportunity. When paging needs to be sent to the terminal equipment or the terminal equipment group where the terminal equipment is located, the indication information is used to indicate that paging exists, and when it is not necessary to send paging to the terminal equipment or the terminal equipment group where the terminal equipment belongs Used to indicate the absence of paging. When a paging needs to be sent to the terminal device or the terminal device group where the terminal device belongs, after the network device sends the indication information to the terminal device, the network device can send the page to the terminal device at the paging opportunity. It can be seen that the network device first sends the indication information for indicating the existence of paging to the terminal device, and then sends the paging to the terminal device, so that the terminal device can determine whether there is a paging according to the indication information, so as to determine whether it needs to receive a paging , so that the technical problem in the prior art that the terminal device needs to receive paging periodically can be solved. Since the network device only sends the indication information for indicating the existence of paging to the terminal device when it needs to send paging to the terminal device, so that the terminal device can receive the paging according to the indication information, which can reduce the number of times the terminal device receives paging. , thereby reducing the power consumption of the terminal device.

As a possible implementation manner, the first indication information is used to indicate whether there is paging.

In this embodiment of the present invention, the first indication information may indicate whether there is paging. When the network device needs to send a page to the terminal device or the terminal device group to which the terminal device belongs, the network device may send a message to the terminal device to indicate that there is a paging When the network equipment does not need to send paging to the terminal equipment, the network equipment can send the indication information to the terminal equipment to indicate that there is no indication information or not to send the indication information to the terminal equipment, so that the terminal equipment can determine whether there is an indication information according to the indication information. Paging can reduce the power consumption of terminal equipment.

As a possible implementation manner, the first paging opportunity is determined according to the identification of the terminal device.

In the embodiment of the present invention, since the paging opportunity is determined according to the identification of the terminal equipment, the number of pages sent to different terminal equipments on the same paging opportunity can be reduced, the wake-up times and false alarm probability of the terminal equipment can be reduced, so that the Reduce power consumption of end devices.

As a possible implementation manner, the first paging opportunity is a paging occasion PO or a paging frame.

As a possible implementation manner, the first indication information used to indicate whether there is paging includes: the first indication information is used to indicate whether there is paging in the paging opportunity within the first time window, and the first time window is the first indication information For the corresponding time window, the paging opportunities in the first time window include the first paging opportunity.

In this embodiment of the present invention, an indication message has a function of indicating whether a paging opportunity within the time window corresponding to the indication information has a function of paging, rather than indicating whether a paging opportunity has paging. It can be seen that one indication information has the function of indicating multiple paging opportunities, which can reduce the quantity of indication information and the quantity of transmission information, thereby saving transmission resources.

As a possible implementation manner, when the first paging opportunity is the first PO, sending the first indication information corresponding to the first paging opportunity by the network device includes: determining the first resource according to the first PO; an instruction message.

In this embodiment of the present invention, after the network device determines the PO, it can determine the resource for transmitting the indication information according to the PO, so as to send the indication information on the determined resource, so that the terminal device can determine whether there is paging according to the indication information, and when there is a paging The paging is received only when a call is made, which can reduce the number of times the terminal device receives paging, thereby reducing the power consumption of the terminal device.

A third aspect discloses a communication apparatus. The communication apparatus may be a terminal device or a module (eg, a chip) in the terminal device. The communication apparatus may include: a determining unit configured to determine a first paging opportunity, the The first paging opportunity is the paging opportunity corresponding to the terminal equipment or the terminal equipment group where the terminal equipment is located; the receiving unit is used to receive the first indication information corresponding to the first paging opportunity from the network equipment; the receiving unit is further used for When the first indication information indicates that there is a paging, a paging from the network device is received at the first paging opportunity.

As a possible implementation manner, the first indication information is used to indicate whether there is paging.

As a possible implementation manner, the first paging opportunity is determined according to the identifier of the terminal device.

As a possible implementation manner, the first paging opportunity is a PO or a paging frame.

As a possible implementation manner, the first indication information used to indicate whether there is paging includes: the first indication information is used to indicate whether there is paging in the paging opportunity within the first time window, the first time The window is a time window corresponding to the first indication information, and the paging opportunities in the first time window include the first paging opportunity.

As a possible implementation manner, when the first paging opportunity is the first PO, the receiving unit receiving the first indication information corresponding to the first paging opportunity from the network device includes: according to the first PO determining a first resource; and receiving first indication information from a network device on the first resource.

As a possible implementation manner, the first indication information is received in a first bandwidth, the paging is received in a second bandwidth, the first bandwidth is different from the second bandwidth, and the first bandwidth is switched by the first bandwidth The switching time to the second bandwidth is less than or equal to the first time, where the first time is the maximum time required for switching from the bandwidth for receiving the first indication information to the bandwidth for receiving the paging.

As a possible implementation manner, the time interval between the reception time of the first indication information and the start time of the first time window is greater than or equal to the first time.

As a possible implementation manner, the first indication information is received at a first BWP, the paging is received at a second BWP, the first BWP is different from the second BWP, and the first BWP switches over The switching time to the second BWP is less than or equal to the second time, where the second time is the maximum time required for switching from the BWP receiving the first indication information to the BWP receiving the paging.

As a possible implementation manner, the time interval between the reception time of the first indication information and the start time of the time window corresponding to the first indication information is greater than or equal to the second time.

A fourth aspect discloses a communication apparatus, the communication apparatus may be a network device, or a module (eg, a chip) in the network device, the communication apparatus may include: a determining unit for determining a first paging opportunity, the The first paging opportunity is the paging opportunity corresponding to the terminal equipment or the terminal equipment group where the terminal equipment is located; the sending unit is used for sending the first indication information corresponding to the first paging opportunity; the sending unit is also used for sending the first indication information corresponding to the first paging opportunity; A paging opportunity sends a paging to the terminal device; the first indication information is used for the terminal device to receive a paging at the first paging opportunity when the first indication information indicates that there is a paging.

As a possible implementation manner, the first indication information is used to indicate whether there is paging.

As a possible implementation manner, the first paging opportunity is determined according to the identifier of the terminal device.

As a possible implementation manner, the first paging opportunity is a PO or a paging frame.

As a possible implementation manner, the first indication information used to indicate whether there is paging includes: the first indication information is used to indicate whether there is paging at the paging opportunity within the first time window, the first time The window is a time window corresponding to the first indication information, and the paging opportunities in the first time window include the first paging opportunity.

As a possible implementation manner, when the first paging opportunity is the first PO, the sending unit sending the first indication information corresponding to the first paging opportunity includes: determining the first resource according to the first PO ; Send first indication information on the first resource.

A fifth aspect discloses a communication apparatus, where the communication apparatus may be a terminal device or a module (eg, a chip) in the terminal device. The communication device may include a processor, a memory, an input interface for receiving information from other communication devices other than the communication device, and an output interface for sending information outside the communication device The other communication device outputs information, and when the processor executes the computer program stored in the memory, the processor causes the processor to execute the communication method disclosed in the first aspect or any embodiment of the first aspect.

A sixth aspect discloses a communication apparatus, which may be a network device or a module (eg, a chip) within the network device. The communication device may include a processor, a memory, an input interface for receiving information from other communication devices other than the communication device, and an output interface for sending information outside the communication device The other communication device outputs information, and when the processor executes the computer program stored in the memory, the processor causes the processor to execute the communication method disclosed in the second aspect or any embodiment of the second aspect.

A seventh aspect discloses a communication system including the communication device of the fifth aspect and the communication device of the sixth aspect.

An eighth aspect discloses a computer-readable storage medium, where a computer program or computer instruction is stored thereon, and when the computer program or computer instruction is executed, the communication method disclosed in the above aspects is implemented.

A ninth aspect discloses a chip including a processor for executing a program stored in a memory, and when the program is executed, causes the chip to execute the above method.

As a possible implementation, the memory is located off-chip.

Description of drawings

1 is a schematic diagram corresponding to a kind of SSB and MO disclosed in an embodiment of the present invention;

2 is a schematic diagram of a network architecture disclosed in an embodiment of the present invention;

3 is a schematic flowchart of a communication method disclosed in an embodiment of the present invention;

4 is a schematic diagram of a time window corresponding to an SSB cycle disclosed in an embodiment of the present invention;

5 is a schematic diagram of a UE receiving SSB and paging according to an embodiment of the present invention;

6 is a schematic diagram of a first time disclosed in an embodiment of the present invention;

7 is a schematic diagram of another first time disclosed in an embodiment of the present invention;

8 is a schematic diagram of a second time disclosed in an embodiment of the present invention;

9 is a schematic diagram of another second time disclosed in an embodiment of the present invention;

10 is a schematic diagram of a PO and SSB cycle disclosed in an embodiment of the present invention;

11 is a schematic structural diagram of a communication device disclosed in an embodiment of the present invention;

12 is a schematic structural diagram of another communication device disclosed in an embodiment of the present invention;

13 is a schematic structural diagram of another communication device disclosed in an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of another communication apparatus disclosed in an embodiment of the present invention.

detailed description

Embodiments of the present invention disclose a communication method, an apparatus, and a computer-readable storage medium, which are used to reduce power consumption. Each of them will be described in detail below.

In order to better understand the embodiments of the present invention, some terms and concepts are first described below.

1. Power saving technology

The 3rd generation partnership project (3GPP) standard organization is currently formulating the protocol standards for the 5th generation (5th Generation, 5G) cellular mobile communication system. 5G may also be referred to as NR. Compared with the long term evolution (LTE) system, NR supports larger transmission bandwidth, more transceiver antenna arrays, higher transmission rate, and a more flexible and finer-grained scheduling mechanism. Although the above-mentioned characteristics of NR provide more scope of application, it greatly increases the power consumption burden of user equipment (UE).

In order to reduce the power consumption of the UE, 3GPP introduced the research on power saving in the NR rel-16/17 version. It is mainly used to study possible power consumption reduction schemes of UE in various states, namely connected state (connected), idle state (idle) and inactive state (inactive). How to save UE power consumption in idle state and inactive state is a research focus.

The idle state refers to the state that the UE is in when the UE completes camping in the cell but does not perform the random access procedure. The UE usually enters the idle state after being powered on, or after the radio resource control (RRC) is released.

Corresponding to the idle state is the connected state, and the connected state refers to the state in which the UE is in when the RRC release is not performed after the random access procedure is completed. The UE can perform data transmission with the network device in the connected state. The UE in the idle state will transition to the connected state after completing the random access procedure. The UE in the connected state transitions to the idle state after completing the RRC release.

The inactive state is a state between the connected state and the idle state. For a UE in an inactive state, the user plane bearer of its air interface has been suspended, and the user plane bearer and control between the radio access network (RAN) device and the core network (CN) device The face bearing is still maintained. When the UE initiates a call or a service request, it needs to activate the user plane bearer of the air interface, and reuse the existing user plane bearer and control plane bearer between the RAN and CN.

2. Paging mechanism

Paging, also called paging message, is used to trigger the UE to establish an RRC connection, or notify the UE of system information update, and send earthquake and tsunami warnings. The content of the paging message is sent to the UE through the physical downlink shared channel (PDSCH), and the PDSCH is scrambled through the paging radio network temporary identifier (P-RNTI) PDCCH scheduled.

The process for the UE to acquire the paging message is as follows: the UE in the idle state or the inactive state periodically wakes up before the paging occasion, and after the UE wakes up, it monitors the PDCCH scrambled by the P-RNTI, and parses the downlink in the PDCCH. Control information (downlink control information, DCI) determines the scheduling information of the PDSCH, including time-frequency location information. The PDSCH is received according to the scheduling information of the PDSCH, and the paging message is obtained from the PDSCH. Determine whether the paging message includes its own identity, and if so, perform corresponding operations, such as establishing an RRC connection or returning to an idle state from an inactive state.

The specific time at which the UE receives the paging may be determined through a paging frame (paging frame, PF) and PO. PF indicates a frame for sending paging, that is, a UE in an idle or inactive state will only attempt to receive a paging in the PF. PO indicates the opportunity to try to receive paging in a PF. Since paging messages are actually scheduled by DCI scrambled by P-RNTI, a PO can actually correspond to S pieces of DCI scrambled by P-RNTI. The detection timing, S can be obtained from the number of system messages.

PF can be defined by the following formula:

(SFN+PF_offset)modT=(T div N)*(UE_ID mod N) (1)

Among them, SFN is the system frame number (system frame number, SFN). PF_offset is the frame offset of PF. T is a discontinuous reception (discontinuous reception, DRX) period, which is a time unit. It can be understood that the UE may have one or more opportunities to attempt to receive paging within a time T. N is the number of PFs included in each DRX cycle. UE_ID is the identity of the UE, which can include a 5G globally unique temporary UE identity (5G globally unique temporary UE identity, 5G-S-TMSI) mod 1024, or a full (full) inactive wireless network temporary identity (inactive radio network temporary identity) identifier, I-RNTI), can also be other information that can uniquely identify the UE, which is not limited here. mod is the modulo operation. div is a division operation.

When an SFN satisfies the above formula, the SFN is considered as a PF. The UE will attempt to receive pages within this PF.

Each PF can correspond to multiple POs. The calculation formula of PO can be as follows:

为向下取整，Ns为一个PF包括的PO的数目。 Among them, i_s is the index number of PO,

For rounding down, Ns is the number of POs included in a PF.

In addition, when the index numbers of the POs determined according to formula (2) and the identifiers of multiple terminal devices are the same, the multiple terminal devices can be determined as one terminal device group.

It should be noted that the network device does not send a paging message to the UE on every PO, and the UE will detect the paging DCI at the PO to determine whether the network device sends a paging.

3. Beam measurement and synchronization signal block (SSB)

A beam is a space communication resource, and a network device or terminal device can shape the transmit beam in an analog, digital or hybrid manner through an antenna array. Different beams are generally considered to be resources in different spaces. Therefore, the same information can be sent through different beams to cover multiple different spatial areas, and different information can be sent through different beams to maximize space resources.

Beams can be divided into transmit beams and receive beams of network equipment, and transmit beams and receive beams of terminal equipment.

The SSB in NR is generally sent using the above-mentioned multiple beams. There is one transmission period for SSB, and in each SSB period, a cell can transmit multiple SSBs of different beams in a time-division manner. When the UE is powered on and camps on a cell or switches to a cell, it can measure multiple SSBs in one SSB cycle of the cell, determine the beam with the best reception quality, and perform beam selection in subsequent cell access and uplink and downlink data transmission. , the measured beam quality of the SSB is used as a reference. The above-mentioned sending SSB period is generally 20ms at low frequency.

Taking paging as an example, in each PO, there are M monitoring occasions (MOs) for paging PDCCHs. The number of M is the same as the number of SSBs of different beams configured in the cell, and each SSB corresponds to one MO in the PO, that is, the beam of the paging PDCCH sent in the MO is the same as the corresponding SSB. The contents of the paging PDCCHs sent on different MOs are the same. Therefore, the UE can select the MO with the best reception performance to receive the paging PDCCH according to the beam measurement result of the SSB, or receive multiple paging PDCCHs in a beam polling manner, and finally combine all the received results.

Please refer to FIG. 1. FIG. 1 is a schematic diagram corresponding to an SSB and an MO according to an embodiment of the present invention. As shown in Fig. 1, the cell is configured with 2 SSBs and 4 POs. Therefore, there are two MOs that can send paging PDCCHs in each PO, SSB1 corresponds to MO1 in one PO, and SSB2 corresponds to MO2 in one PO.

Optionally, the beam may also correspond to information associated with reference signal resources of the network device. The reference signal may be a channel state information reference signal (CSI-RS), an SSB, a demodulation reference signal (DMRS), a phase tracking reference signal (PTRS), a tracking reference signal ( tracking reference signal, TRS), etc. The information associated with the reference signal resources may be a reference signal resource identifier, quasi-co-location (QCL) information, and the like. The reference signal resource identifier corresponds to a transceiving beam pair previously established based on the reference signal resource measurement. Therefore, the UE can infer beam information through the reference signal resource index.

Optionally, the beam may also correspond to a spatial filter (spatial filter/spatial domain filter) and a spatial domain transmission filter (spatial domain transmission filter).

4. UE wakes up

Before the UE wakes up in the idle state and tries to receive paging, in order to ensure the reception performance, some parameters of the receiver need to be adjusted first. The adjustment step may include the following steps:

(1) Beam measurement and SSB selection.

(2) Time frequency tracking.

Also known as time-frequency synchronization. Due to the limitation of manufacturing cost, the precision of the frequency crystal oscillator used by the UE is not particularly high, which will cause deviations between the maintenance time and operating frequency of the UE and the clock and frequency of the network equipment after the UE is powered on for a period of time. Therefore, a specific reference signal needs to be sent by the network device for the UE to estimate the current timing offset, frequency domain offset, delay spread and Doppler spread between itself and the network equipment, and to compensate for its own time-frequency offset. In the idle state, the UE generally performs preliminary time-frequency tracking by receiving SSB, and in the connected state, the UE can further perform fine time-frequency tracking by further receiving TRS, CSI-RS, and the like.

(3) Automatic gain control (automatic gain control, AGC).

Adjust the signal output power of the baseband and RF circuits according to the power of the received signal. In the idle state, the UE generally performs AGC estimation by receiving the SSB.

In addition to the above steps, the UE may also need to perform steps such as signal inference ratio (signal inference ratio, SIR) estimation.

5. Bandwidth part (BWP)

Compared with the LTE system, the NR system has a feature that different bandwidths can be configured on the network device side and the UE side. NR can configure the maximum working bandwidth of the UE according to service requirements and UE types. A BWP is a segment of continuous frequency resources on a cell carrier, and the base station can configure BWPs with different bandwidths for different UEs. When a BWP is configured and activated, the BWP is called an active BWP, and the data and control information sent by the UE in the uplink or the data and control information received in the downlink will be limited to the active BWP. It is stipulated in the NR Rel-15 version protocol that a UE can only have one active BWP.

In order to enable the UE to transmit and receive data on different BWPs at different times according to service requirements, NR support can trigger the UE to perform BWP handover in the DCI of the scheduling data.

In general, the DCI that schedules data is referred to as scheduling DCI. The DCI includes DCI formats (formats) 1_0, 1_1, 1_2 for scheduling UEs to receive downlink PDSCH data, and may also include DCI formats 0_0, 0_1, 0_2 for scheduling UEs to send uplink PUSCH data. After receiving the above scheduling DCI, the UE will switch to the new BWP indicated by the DCI and receive or send data. Wherein, the above format is only illustrative, and does not constitute a limitation. The DCI format may also be other formats, which are not limited here.

The UE needs to perform at least one of the following operations to switch from one BWP to another:

(1) Receive and parse the BWP handover instruction in the DCI;

(2) The RF device is switched to the new BWP, including center frequency switching, sampling rate switching and other operations;

(3) Applying configuration parameters on the new BWP works normally.

Completing the above operations requires a certain processing delay, which may be referred to as T _{BWPswitchDelay} . This value can be defined as: if the UE receives the DCI for switching the BWP on time slot n, the UE shall be equipped to send the physical uplink shared channel (physical uplink shared channel) on the switched BWP in the n+ _{Tth BWPswitchDelay} time slot. PUSCH) or the ability to receive PDSCH. According to the different UE capabilities, NR defines two different processing delay types (types), and the two delay types are shown in Table 1:

Table 1 BWP handover delay

Among them, μ is the subcarrier interval parameter of the current UE operation, that is, the subcarrier interval of the UE operation is 2 ^μ ·15kHz. The UE may report to the base station whether the supported BWP handover capability is Type 1 or Type 2.

In order to better understand a communication method, an apparatus, and a computer-readable storage medium disclosed by the embodiments of the present invention, the application scenarios of the embodiments of the present invention are first described below. Currently, in NR, when the terminal device is in an idle or inactive state, the terminal device periodically wakes up. After waking up, the terminal device may attempt to receive pages by listening to the PDCCH. However, the network device does not send a page to the terminal device at every PF or PO, so the terminal device may not necessarily be able to receive a page at every PF or PO. It can be seen that many processes in which the terminal device receives paging are invalid processes, so that the power consumption of the terminal device is wasted.

In addition, since the terminal device must perform beam selection, time-frequency tracking, etc. through the SSB before receiving the paging, receiving the SSB will have a large power consumption overhead, so that the power consumption of the terminal device is large.

In order to better understand a communication method, an apparatus, and a computer-readable storage medium disclosed in the embodiments of the present invention, the network architecture used in the embodiments of the present invention is first described below. Please refer to FIG. 2 , which is a schematic diagram of a network architecture disclosed in an embodiment of the present invention. As shown in FIG. 2, the network device may include a core network device 201, an access network device 202, and multiple terminal devices 203 (only one terminal device is illustrated in the figure). When the core network device 201 needs to establish a connection with the terminal device 203, it can send the identification of the terminal device to be paged to the access network device 202. After the access network device 202 receives the identification of the terminal device from the core network device 201, it can send a page to the terminal device. After receiving the paging from the access network device 602, the terminal device 203 can establish a connection with the core network device 601 according to the paging.

The functions of the core network device, the access network device, and the terminal device described above are only illustrative, and do not constitute a terminal device for the functions of the core network device, the access network device, and the terminal device.

Terminal equipment, also known as UE, mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), etc., is a device that provides voice and/or data connectivity to users. The terminal device can be a handheld terminal, a notebook computer, a subscriber unit, a cellular phone, a smart phone, a wireless data card, a personal digital assistant (PDA) computer, a tablet computer , wireless modem (modem), handheld device (handheld), laptop computer (laptop computer), cordless phone (cordless phone) or wireless local loop (wireless local loop, WLL) station, machine type communication (machine type communication, MTC) terminals, wearable devices (such as smart watches, smart bracelets, pedometers, etc.), in-vehicle devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rail, etc.), virtual reality (virtual reality, VR) equipment, augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), smart home equipment (for example, refrigerators, TVs, air conditioners, electricity meters, etc.), intelligent robots, workshop equipment, unmanned driving Wireless terminals in (self driving), wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety, in smart city wireless terminals, or wireless terminals in smart homes, flying devices (eg, smart robots, hot air balloons, drones, airplanes), or other devices that can access the network.

Access network equipment provides wireless access equipment for terminal equipment, and is mainly responsible for functions such as wireless resource management, quality of service (QoS) flow management, data compression, and encryption on the air interface side. The network equipment may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, and the like. The network device may also include a wireless fidelity (WiFi) access point (AP). The network device may also include a worldwide interoperability for microwave access (WiMax) base station (BS).

The core network device may be a core network (core network, CN) device corresponding to different devices in different systems. In 3G, it can correspond to a serving GPRS support node (SGSN) of general packet radio service (GPRS) and/or a gateway GPRS support node (GGSN) of GPRS. In 4G, it may correspond to a mobility management entity (mobility management entity, MME) and/or a serving gateway (serving gateway, S-GW). In 5G, it can correspond to access and mobility management function (AMF), session management function (SMF) or user plane function (UPF).

Based on the above network architecture, please refer to FIG. 3 , which is a schematic flowchart of a communication method disclosed in an embodiment of the present invention. As shown in FIG. 3 , the communication method may include the following steps. The functions performed by the terminal equipment in the following steps may also be performed by modules (eg, chips) in the terminal equipment, and the functions performed by the network equipment in the following steps may also be performed by modules (eg, chips) in the network equipment. implement.

301. The network device determines a first paging opportunity.

The network device may determine the first paging opportunity when there is a service requirement. For example, the network device may determine the first paging opportunity after receiving the identification of the terminal device that needs to be paged from the core network device. The above triggering conditions for triggering the network device to determine the first paging opportunity are merely illustrative and do not constitute a limitation. The triggering condition that triggers the network device to determine the first paging opportunity may also be other information, messages, signaling, etc. having the same function, which is not limited herein. The first paging opportunity is a paging opportunity corresponding to the terminal equipment or the terminal equipment group where the terminal equipment is located. The first paging opportunity is a paging opportunity of the terminal device, which can be understood as one paging opportunity corresponding to one terminal device. The first paging opportunity is a paging opportunity corresponding to the terminal equipment group where the terminal equipment is located, which can be understood as a paging opportunity corresponding to multiple terminal equipments.

It can be understood that the above-mentioned first paging opportunity may be a paging frame or a PO.

The network device may determine the first paging opportunity according to the identification of the terminal device. For example, when the first paging opportunity is a paging frame, the network device may determine the first paging opportunity using formula (1). For another example, when the first paging opportunity is a paging frame, the network device may determine the first paging opportunity by using various modified formulas of formula (1). For another example, when the first paging opportunity is PO, the network device can use formula (1) and formula (2) to determine the first paging opportunity, and for another example, when the first paging opportunity is PO, the network device can use formula (1) ) and various modified formulas of formula (2) to determine the first paging opportunity. The above is only an exemplary description of determining the first paging opportunity according to the identifier of the terminal device, and does not constitute a limitation. The network device may also use other methods or formulas to determine the first paging opportunity according to the identifier of the terminal device, which is not limited herein.

The identifier of the terminal device may be 5G-S-TMSImod 1024, or fullI-RNTI, or other information that can uniquely identify the terminal device, which is not limited here.

302. The terminal device determines the first paging opportunity.

When the terminal device is in an idle state or an inactive state, the terminal device may periodically determine the first paging opportunity. The above cycle may be a DRX cycle, a cycle configured by a network device, a preconfigured cycle, a default configured cycle, or a cycle determined in other ways, which is not limited herein.

The manner in which the terminal device determines the first paging opportunity is the same as the manner in which the network device determines the first paging opportunity. For a detailed description, refer to the description of the network device determining the first paging opportunity in step 301, which will not be repeated here.

303. The network device sends first indication information corresponding to the first paging opportunity.

After determining the first paging opportunity, the network device may send the first indication information corresponding to the first paging opportunity to the terminal device, or may send the first indication corresponding to the first paging opportunity to all terminal devices in the terminal device group where the terminal device is located information, and may also send first indication information corresponding to the first paging opportunity to the terminal device in the terminal device group where the terminal device is located.

The first indication information is used to indicate whether there is paging. For example, the first indication information may be a bit, when the value of this bit is the first value, it may indicate that there is paging, and when the value of this bit is the second value, it may indicate that there is no paging. For another example, the first indication information may include multiple bits, when the multiple bits are in the first sequence, it may indicate that there is paging, and when the multiple bits are in the second sequence, it may indicate that there is no paging. For another example, the first indication information may include a plurality of bits, and each bit is used to indicate whether there is indication information for a terminal device. For another example, the first indication information may be an index of indication information. When the index value is an index value of one information, it may indicate that paging exists, and when the index value is an index value of another information, it may indicate that no paging exists. For another example, when the network device wants to send paging to the terminal device, the network device may send the first indication information to the terminal device, which can be understood as the network device sending information to the terminal device on the resources configured for the first indication information, and correspondingly. , when the terminal device receives information on this resource, it indicates that there is paging. When the network device does not send paging to the terminal device, the network device does not send the first indication information to the terminal device on the resource configured for the first indication information. Correspondingly, when the terminal device does not receive information on this resource, it indicates that There is no paging. It can be understood that the above examples of the first indication information are only illustrative, and do not constitute a limitation on the first indication information. The first indication information may be any form of information, message, signaling, etc. that indicates whether there is a paging or not. It is not limited here. For example, the first indication information may be a reference signal sequence, a PDCCH, a PDSCH, or the like. The resources may include time domain resources, frequency domain resources, sequence resources and other resources.

Correspondingly, the terminal device receives the first indication information corresponding to the first paging opportunity from the network device.

Optionally, when the first paging opportunity is the first PO, the network device may first determine the first resource according to the first PO, and then may send the first indication information on the first resource. Correspondingly, the terminal device may determine the first resource according to the first PO, and then may receive the first indication information from the network device on the first resource. The first resource may be understood as a time domain resource.

In addition, when the network device sends the first indication information to the terminal device, and can send the first SSB to the terminal device, it can be understood that the network device sends the first indication information and the first SSB to the terminal device, and it can also be understood that the first indication information and the first SSB are sent by the network device to the terminal device. The first SSB is sent continuously, and it can also be understood that the first indication information and the first SSB are transmitted in the same time unit, and it can also be understood that the first indication information and the first SSB are transmitted in adjacent time units. The time unit may be various time units such as time slot, subframe, symbol, frame, etc., which are not limited herein. The first indication information and the first SSB are continuously sent, so that the terminal device can directly receive the first indication information without switching the power consumption state and the receiving parameter after receiving the first SSB, which ensures that the receiving parameters of the first indication information and The corresponding SSBs are the same, and additional unnecessary power consumption overhead is not introduced due to power state switching.

After determining the first paging opportunity, the terminal device may receive the first indication information corresponding to the first paging opportunity from the network device. The resource for sending the first indication information by the network device may be configured by the network device, or may be configured by default. The terminal device may receive the first indication information from the resource corresponding to the indication information. Because the power consumption and complexity of receiving the first indication information by the terminal device are much smaller than the power consumption and complexity of receiving paging, and the probability of the network device sending paging to the terminal device when the terminal device is in an idle or inactive state is small , therefore, the first indication information can reduce the power consumption of the terminal device.

In an implementation manner, the above-mentioned first indication information may be indication information scrambled by the identification of the terminal device (or the group to which the terminal device belongs). Correspondingly, the indication information can only be descrambled by the terminal equipment corresponding to the identifier, that is, the indication information can only be successfully received by the terminal equipment corresponding to the identifier. The indication information may be a PDCCH scrambled by paging (P)-RNTI, or a PDCCH scrambled by other identities of the terminal equipment or terminal equipment group, or a reference generated by the identity of the terminal equipment or terminal equipment group The signal sequence may also be a reference signal sequence generated by other information of a terminal device or a terminal device group, which is not limited here.

In another implementation manner, the above-mentioned first indication information may carry the identifier of the terminal device. The first indication information may be successfully received by multiple terminal devices. After the terminal device receives the first indication information, it needs to judge whether the identity of the terminal device carried by the first indication information is the same as its own identity. The first indication information is the indication information sent to the self, and then it can be further determined whether there is a paging for the self according to the first indication information. When it is determined that the identity of the terminal device carried in the first indication information is different from the identity of the terminal device, it indicates that the first indication information is not the indication information sent to the self, and the indication information can be discarded.

In yet another implementation manner, the above-mentioned first indication information may be received by all terminal equipments in the terminal equipment group where the terminal equipment is located. After these terminal equipments receive the first indication information, when the first indication information indicates that paging exists , you can both receive paging. When the paging is for all the terminal devices in the terminal device group, it is possible for these terminal devices to successfully receive the page. In one case, when the page is for one terminal device in the terminal device group, only this terminal device can successfully receive the page. In another case, when the paging is for a terminal equipment in the terminal equipment group, all terminal equipments in the terminal equipment group may successfully receive the paging, and then the paging can be carried out according to the The identification further determines which terminal device the page is for.

In an implementation manner, when the terminal device is in an idle state or an inactive state, one SSB period may correspond to one time window. Please refer to FIG. 4. FIG. 4 is a schematic diagram of a time window corresponding to an SSB period disclosed in an embodiment of the present invention. As shown in Figure 4, the time window can be determined by two values, one is the start time of the time window, and the other is the end time of the time window. The interval between the start time of the time window and the transmission time of the SSB cycle corresponding to the time window is the smallest, and the interval between the end time of the time window and the transmission time of the SSB cycle corresponding to the time window is the largest. The time interval between the start time of the time window and the reception time of the corresponding SSB cycle may represent the necessary processing time for the terminal device from receiving the SSB and the indication information to receiving the paging, and may include the time when the terminal device receives the SSB and the indication information, The terminal equipment processes the SSB and indicates the time of the information, etc.

The start time of the time window can be determined by the corresponding end time of the SSB period transmission and the start time interval of the time window. For example, the number of the last transmission time slot of an SSB cycle is n, and the start time interval of the time window is T1 time slots, then the time slot number of the start time of the time window is n+T1. The starting time interval of the time window may be a value pre-agreed by the network device and the terminal device, or may be a value configured by the network device to the terminal device, which is not limited herein.

The end time of the time window may be determined by the corresponding SSB period transmission end time and the end time interval of the time window. For example, the number of the last transmission time slot of an SSB cycle is n, and the start time interval of the time window is T2 time slots, then the time slot number of the end time of the time window is n+T2. The end time interval of the time window may be a value pre-agreed by the network device and the terminal device, or may be a value configured by the network device to the terminal device, which is not limited herein.

The end time of the time window may also be the sum of the start time of the time window and a time period, which is the size of the time window.

In another implementation manner, one indication information may correspond to one time window, that is, the indication information and time windows are in one-to-one correspondence, and one SSB period may correspond to multiple time windows.

Generally speaking, the length of the time window is greater than the length of the paging opportunity. Therefore, only one paging opportunity is indicated by an indication message, which may result in a waste of transmission resources. Therefore, in order to solve the above problem, the first indication information can indicate whether there is paging in the paging opportunity in the first time window, the first time window is the time window corresponding to the first indication information, and the paging opportunity in the first time window includes the first time window. A paging opportunity. The paging opportunities among the paging opportunities within the first time window may all be within the first time window, and may also be partially within the first time window. For example, when the first half of the paging opportunity 1 is within the time window 1 and the second half is within the time window 2, it can be considered that the paging opportunity 1 is within the time window 1. When one SSB period corresponds to one time window, the time window corresponding to the first indication information may be understood as the time window corresponding to the SSB period corresponding to the first indication information. When the indication information is in one-to-one correspondence with the time windows, the time window corresponding to the first indication information may be understood as the time window corresponding to the first indication information.

It can be understood that different time windows may be continuous, that is, the end time of one time window is the start time of another time window, and accordingly, a paging opportunity can only be in one time window. Different time windows may also overlap each other, and accordingly, a paging opportunity may be in multiple time windows. Different time windows may also be discontinuous, which is not limited here.

Determining the first resource according to the first PO may be understood as determining the resource corresponding to the time window including the first PO. When the time window is one, the resource may be a resource corresponding to one SSB cycle, or may be a resource corresponding to an indication information. When there are multiple time windows, the resource may be a resource corresponding to multiple SSB periods, or may be a resource corresponding to multiple indication information. The multiple pieces of indication information may be within one SSB cycle, or may be within multiple SSB cycles, which are not limited herein.

304. The network device sends a page to the terminal device at the first paging opportunity.

After sending the first indication information corresponding to the first paging opportunity, the network device may send the paging to the terminal device on the first paging opportunity.

Correspondingly, the terminal device receives the paging from the network device at the first paging opportunity. When the first indication information indicates that there is paging, the terminal device may receive the paging from the network device at the first paging opportunity.

The network device may send the indication information in the time slot of the SSB. Correspondingly, the terminal device may receive the indication information in the time slot in which the SSB is received.

Optionally, when the first paging opportunity is the first PO, the network device may send a page to the terminal device in the MO in the first PO, which can be understood as sending each MO of the network device in the first PO to the terminal device. Paging can also be understood as the network device sending paging to the terminal device using all angles included in the SSB period corresponding to the first PO, or it can also be understood that the network device uses the beam included in the SSB cycle corresponding to the first PO to send paging to the terminal device. Among them, the beam and the SSB can be in a one-to-one correspondence, and the angle and the SSB can be in a one-to-one correspondence. When the network device sends paging at the MO, it can be understood that the network device sends the PDCCH at the MO, the PDCCH carries DCI, and the DCI includes the scheduling information of the PDSCH resource, and the network device sends the paging message on the PDSCH corresponding to the resource. The PDCCH may be scrambled by P-RNTI, or may be scrambled by other information, as long as it can be shown that the PDCCH is a PDCCH for paging, which is not limited here.

Correspondingly, when the first paging opportunity is the first PO, the terminal device may first determine the first MO in the first PO, and then may receive a paging from the network device at the first MO in the first PO. The terminal device may determine the first MO in the first PO according to the SSB. The terminal device may determine the first MO in the PO according to the signal strength of the SSB. For example, the terminal device may determine the MO corresponding to the SSB with the strongest signal strength among the SSBs included in the SSB period corresponding to the first SSB in the first PO as the first MO. For another example, when there are SSBs greater than or equal to (or greater than) the first threshold in the signal strength of the SSBs included in the SSB period corresponding to the first SSB, the terminal device may use the SSBs included in the SSB period corresponding to the first SSB in the first PO The MO corresponding to the SSB with the strongest signal strength is determined as the first MO. For another example, when the signal strengths of the SSBs included in the SSB period corresponding to the first SSB include SSBs that are all less than (or less than or equal to) the second threshold, the terminal device may use two SSBs included in the SSB period corresponding to the first SSB in the first PO. The MO corresponding to one or two SSBs is determined as the first MO. After two or more MOs in the first PO receive the paging from the network device, the terminal device may combine multiple received pagings to obtain a final paging. Merging can be weighted or cumulative. The above examples for determining the first MO in the first PO are only illustrative and do not constitute a limitation. The terminal device may also determine the first MO in the first PO in other manners, which is not limited herein. It can be seen that the first MO may be one MO in the first PO corresponding to the terminal device, or may be two or more MOs in the first PO corresponding to the terminal device. When the terminal equipment receives paging at the MO, it can be understood that the terminal equipment receives the PDCCH at the MO, obtains the DCI from the PDCCH, determines the PDSCH resource according to the DCI, and receives the paging message on the PDSCH corresponding to the resource. The PDCCH may be scrambled by P-RNTI or scrambled by other information, as long as it can be shown that the PDCCH is a PDCCH for paging, no limitation is imposed here.

The terminal equipment generally uses a larger bandwidth to receive the paging PDCCH and PDSCH, and the bandwidth is generally greater than or equal to 20MHz. The synchronization signal generally only transmits 20 physical resource blocks (PRBs), and the bandwidth only needs 7.2MHz under the subcarrier interval of 30kHz. It can be seen that the bandwidth actually required for receiving the synchronization signal is much smaller than the bandwidth actually required for receiving the paging. Please refer to FIG. 5. FIG. 5 is a schematic diagram of a UE receiving SSB and paging according to an embodiment of the present invention. As shown in FIG. 5 , the working bandwidth actually required by the UE to receive the SSB is smaller than the actual working bandwidth required for receiving the paging. The larger the operating bandwidth, the greater the power consumption of the terminal device.

In an implementation manner, the first indication information may be received in the first bandwidth, which may be understood as the terminal device may receive the first indication information in the first bandwidth. The paging can be received in the second bandwidth, which can be understood as the terminal device can receive the paging in the second bandwidth. The first bandwidth is different from the second bandwidth. The switching time of switching from the first bandwidth to the second bandwidth is less than or equal to (or less than) the first time, it can be understood that the switching time of the first terminal device switching from the first bandwidth to the second bandwidth is less than or equal to (or less than) the first a time. The first time is the maximum time required for switching from the bandwidth for receiving the first indication information to the bandwidth for receiving paging. For example, the terminal device starts switching the bandwidth at n, and has the ability to receive and/or send information at n+T, where T is the first time. The time units of n and T can be parameterized as described above for the time units.

When one SSB period corresponds to one time window, please refer to FIG. 6 . FIG. 6 is a schematic diagram of a first time period disclosed in an embodiment of the present invention. As shown in FIG. 6 , the first time may be the time from the reception of the last indication information in the SSB cycle to the start time of the time window corresponding to the SSB cycle. Please refer to FIG. 7 , which is a schematic diagram of another first time according to an embodiment of the present invention. As shown in FIG. 7 , the terminal device determines that there is a paging for itself according to the indication information 1, and starts to switch from the first bandwidth to the second bandwidth after receiving the indication information 1. The first time is the time from receiving the indication information 1 to the start time of the time window corresponding to this SSB cycle.

It can be seen that when there is indication information for indicating the existence of paging in the indication information included in an SSB period, the terminal device can switch from the first bandwidth to the second bandwidth after receiving the last indication information in this SSB period; It is also possible to start switching from the first bandwidth to the second bandwidth immediately after receiving the indication information for indicating the existence of paging in this SSB cycle, without waiting for all indication information in this SSB cycle to be received. switch.

Optionally, the time interval between the reception time of the first indication information and the start time of the time window corresponding to the first indication information is greater than or equal to the first time.

When the terminal equipment uses different bandwidths to receive the first indication information and paging, after the terminal equipment receives the first indication information, it needs to readjust the radio frequency and baseband chip, or needs to readjust the working parameters, that is, the terminal equipment needs to receive the first indication information. The bandwidth of the indication information is switched to the bandwidth for receiving paging, and the switching process takes a certain period of time, and the terminal equipment cannot receive information within this time. Therefore, in order to ensure that the terminal device can receive the paging from the network device, the time interval between the reception time of the first indication information and the start time of the time window corresponding to the first indication information may be greater than or equal to the first time.

In another implementation manner, the first indication information may be received at the first BWP, which may be understood as the terminal device may receive the first indication information at the first BWP. The paging may be received at the second BWP, which may be understood as the terminal device may receive the paging at the second BWP. The first BWP is different from the second BWP. If the switching time from the first BWP to the second BWP is less than or equal to the second time, it can be understood that the switching time of the first terminal device from the first BWP to the second BWP is less than or equal to (or less than) the second time. The second time is the maximum time required for switching from the BWP receiving the first indication information to the BWP receiving the paging. For example, the terminal device starts switching bandwidth at n and has the capability to receive and/or transmit information at n+T, where T is the second time.

In the case that one SSB cycle corresponds to one time window, when the terminal device uses BWP to receive SSB/indication information and paging, the second time may be the time from receiving any indication information in the SSB cycle to the time corresponding to this SSB cycle The time between the start times of the window. Please refer to FIG. 8 , which is a schematic diagram of a second time according to an embodiment of the present invention. As shown in FIG. 8 , the terminal device determines that there is a paging for itself according to the indication information 1, and starts to switch from the first BWP to the second BWP after receiving the indication information 1. The second time is the time from when the indication information 1 is received to the start time of the time window corresponding to this SSB cycle.

In the case that one SSB cycle corresponds to one time window, when the terminal device uses BWP to receive SSB/indication information and paging, please refer to FIG. 9 , which is a schematic diagram of another second time disclosed in an embodiment of the present invention. As shown in FIG. 9 , the second time may be the time from the reception of the last indication information in the SSB cycle to the start time of the time window corresponding to this SSB cycle.

It can be seen that when there is indication information for indicating the existence of paging in the indication information included in an SSB period, the terminal device can switch from the first BWP to the second BWP after receiving the last indication information in this SSB period; It is also possible to start switching from the first BWP to the second BWP immediately after receiving the indication information for indicating the existence of paging in this SSB period, without waiting for all indication information in this SSB period to be received. switch.

Optionally, the time interval between the reception time of the first indication information and the start time of the time window corresponding to the first indication information is greater than or equal to the second time.

When the terminal device uses different BWPs to receive the first indication information and paging, after receiving the first indication information, the terminal device needs to readjust the radio frequency and baseband chip, or needs to readjust the working parameters, that is, the terminal device needs to receive the indication information The BWP is switched to the BWP that receives the paging, and the switching process takes a certain period of time, and the terminal equipment cannot receive information during this time. Therefore, in order to ensure that the terminal device can receive the paging from the network device, the time interval between the reception time of the first indication information and the start time of the time window corresponding to the first indication information may be greater than or equal to the second time.

It can be seen that, in order to reduce the power consumption of the terminal device, the terminal device may use a bandwidth (or BWP) smaller than that for receiving paging to receive the indication information. For example, a terminal device may use a bandwidth of 10 MHz to receive SSB and indication information. The above examples of the bandwidth for receiving the SSB and the indication information are for illustrative purposes only, and do not constitute a limitation. The bandwidth (or BWP) for receiving SSB and indication information may be any bandwidth (or BWP) smaller than the bandwidth (or BWP) for receiving paging, which is not limited herein. Therefore, the first bandwidth may be smaller than the second bandwidth, and the first BWP may be smaller than the second BWP.

It can be understood that the first time and the second time may be the same or different.

The first time and the second time may be configured by the network device, or determined by the network device according to the capability information of the terminal device, or determined by the terminal device according to the capability information, which are not limited herein.

The first time (or the second time) may be the maximum time required to switch from the bandwidth (or BWP) of receiving indication information/to the bandwidth (or BWP) of receiving paging. This indication information is indication information used to indicate that there is paging for the terminal device in the SSB cycle.

For example, please refer to FIG. 10. FIG. 10 is a schematic diagram of a PO and SSB cycle disclosed in an embodiment of the present invention. As shown in FIG. 10, each SSB cycle may include three SSBs, SSB1, SSB2 and SSB3. PO1 and PO2 are in the time window 1 corresponding to the first SSB cycle, MO1 and MO2 in PO3 are in the time window 1 corresponding to the first SSB cycle, it can be considered that PO3 is also in the time window 1 corresponding to the first SSB cycle Inside. PO4 is within the time window corresponding to the second SSB cycle. SSB1 in the SSB cycle corresponds to MO1 in the PO, SSB2 in the SSB cycle corresponds to MO2 in the PO, and SSB3 in the SSB cycle corresponds to MO3 in the PO. The terminal equipment whose paging opportunity is in PO1, PO2 or PO3 can judge whether there is paging for itself according to the indication information in the first SSB cycle. An SSB cycle includes the signal strength of the SSB for beam selection. Similarly, the terminal equipment whose paging opportunity is in PO4 can judge whether there is a paging for itself according to the indication information in the second SSB cycle.

When the network device sends the paging to the terminal device, it can send the page in the unit of the terminal device. The network device sends paging in units of terminal devices, which can be understood as the network device sending a page for each terminal device, or it can be understood that the paging of each terminal device is sent by the network device separately. For example, the network device sends page 1 to terminal device 1, the network device sends page 2 to terminal device 2, and page 1 and page 2 are different pages. The network device can send the page to the terminal device in unicast mode, also can send the page to the terminal device in the multicast mode, and can also send the page to the terminal device in the broadcast mode.

When the network device sends the paging to the terminal device, it can also send the page in the unit of the terminal device group. The network device sends paging in a terminal device group. It can be understood that the network device only needs to send one page to the terminal device in the terminal device group, and does not need to send a page to each terminal device in the terminal device group separately.

The group identifier of the terminal equipment group may be 5G-S-TMSImod 1024, or fullI-RNTI, or other information that can uniquely identify the terminal equipment, which is not limited here.

Wherein, the related contents in the above different steps may refer to each other, and are not limited to the corresponding steps.

Based on the above network architecture, please refer to FIG. 11 , which is a schematic structural diagram of a communication device disclosed in an embodiment of the present invention. As shown in Figure 11, the communication device may include:

A determining unit 1101, configured to determine a first paging opportunity, where the first paging opportunity is a paging opportunity corresponding to a terminal device or a terminal device group where the terminal device is located;

a receiving unit 1102, configured to receive the first indication information corresponding to the first paging opportunity from the network device;

The receiving unit 1102 is further configured to receive a paging from the network device at the first paging opportunity when the first indication information indicates that paging exists.

In one embodiment, the first indication information is used to indicate whether there is paging.

In one embodiment, the first paging opportunity is determined according to the identification of the terminal device.

In one embodiment, the first paging opportunity is a PO or paging frame.

In one embodiment, the first indication information used to indicate whether there is paging includes:

The first indication information is used to indicate whether there is paging in the paging opportunity within the first time window, the first time window is the time window corresponding to the first indication information, and the paging opportunity in the first time window includes the first paging opportunity.

In one embodiment, when the first paging opportunity is the first PO, the first indication information corresponding to the first paging opportunity received by the receiving unit 1102 from the network device includes:

determine the first resource according to the first PO;

The first indication information from the network device is received on the first resource.

In one embodiment, the first indication information is received at the first bandwidth, the paging is received at the second bandwidth, the first bandwidth is different from the second bandwidth, and the switching time from the first bandwidth to the second bandwidth is less than or equal to the first bandwidth time, where the first time is the maximum time required for switching from the bandwidth for receiving the first indication information to the bandwidth for receiving paging.

In one embodiment, the time interval between the reception time of the first indication information and the start time of the time window corresponding to the first indication information is greater than or equal to the first time.

In one embodiment, the first indication information is received at the first BWP, the paging is received at the second BWP, the first BWP is different from the second BWP, and the switching time from the first BWP to the second BWP is less than or equal to the second BWP time, and the second time is the maximum time required for switching from the BWP receiving the first indication information to the BWP receiving the paging.

In one embodiment, the time interval between the reception time of the first indication information and the start time of the time window corresponding to the first indication information is greater than or equal to the second time.

More detailed descriptions of the foregoing determining unit 1101 and receiving unit 1102 can be obtained directly by referring to the relevant descriptions of the terminal device in the method embodiment shown in FIG. 3 , and details are not repeated here.

Based on the above network architecture, please refer to FIG. 12 , which is a schematic structural diagram of another communication device disclosed in an embodiment of the present invention. As shown in Figure 12, the communication device may include:

A determining unit 1201, configured to determine a first paging opportunity, where the first paging opportunity is a paging opportunity corresponding to a terminal device or a terminal device group where the terminal device is located;

A sending unit 1202, configured to send first indication information corresponding to the first paging opportunity;

The sending unit 1202 is further configured to send paging to the terminal device at the first paging opportunity;

The first indication information is used for the terminal device to receive paging at the first paging opportunity when the first indication information indicates that there is a paging.

In one embodiment, the first indication information is used to indicate whether there is paging.

In one embodiment, the first paging opportunity is determined according to the identification of the terminal device.

In one embodiment, the first paging opportunity is a PO or paging frame.

In one embodiment, the first indication information used to indicate whether there is paging includes:

The first indication information is used to indicate whether there is paging in the paging opportunity within the first time window, the first time window is the time window corresponding to the first indication information, and the paging opportunity in the first time window includes the first paging opportunity.

In one embodiment, when the first paging opportunity is the first PO, sending the first indication information corresponding to the first paging opportunity by the sending unit 1202 includes:

determine the first resource according to the first PO;

Send the first indication information on the first resource.

More detailed descriptions of the foregoing determining unit 1201 and sending unit 1202 can be obtained directly by referring to the relevant descriptions of the network devices in the method embodiment shown in FIG. 3 , and details are not repeated here.

Based on the above network architecture, please refer to FIG. 13 . FIG. 13 is a schematic structural diagram of another communication apparatus disclosed in an embodiment of the present invention. As shown in FIG. 13 , the communication device may include a processor 1301 , a memory 1302 , an input interface 1303 , an output interface 1304 and a bus 1305 . The memory 1302 may exist independently, and may be connected to the processor 1301 through the bus 1305 . The memory 1302 may also be integrated with the processor 1301. Among them, the bus 1305 is used to realize the connection between these components.

In one embodiment, the communication device may be a terminal device or a module (eg, a chip) in the terminal device, and when the computer program instructions stored in the memory 1302 are executed, the processor 1301 is configured to control the receiving unit 1102 to perform the above implementation The processor 1301 is further configured to perform the operations performed by the determining unit 1101 in the above-mentioned embodiments, the input interface 1303 is used to perform the operations performed by the receiving unit 1102 in the above-mentioned embodiments, and the output interface 1304 is used to communicate with the Other communication devices other than the device output information. The foregoing terminal device or modules in the terminal device may also be used to execute various methods executed by the terminal device in the foregoing method embodiment of FIG. 3 , which will not be described again.

In one embodiment, the communication apparatus may be a network device or a module (eg, a chip) within the network device, and when the computer program instructions stored in the memory 1302 are executed, the processor 1301 is configured to control the sending unit 1202 to perform the above implementation The operation performed in the example, the processor 1301 is further configured to perform the operations performed by the determination unit 1201 in the above-mentioned embodiment, the input interface 1303 is used to receive information from other communication devices other than the communication device, and the output interface 1304 is used to execute The operations performed by the sending unit 1202 in the above embodiments. The foregoing network device or modules within the network device may also be used to execute various methods performed by the network device in the foregoing method embodiment of FIG. 3 , which will not be described again.

Based on the above network architecture, please refer to FIG. 14 . FIG. 14 is a schematic structural diagram of another communication apparatus disclosed in an embodiment of the present invention. As shown in FIG. 14 , the communication device may include an input interface 1401 , a logic circuit 1402 and an output interface 1403 . The input interface 1401 and the output interface 1403 are connected through the logic circuit 1402 . The input interface 1401 is used for receiving information from other communication devices, and the output interface 1403 is used for outputting, scheduling or sending information to other communication devices. The logic circuit 1402 is configured to perform operations other than the operations of the input interface 1401 and the output interface 1403, for example, to implement the functions implemented by the processor 1301 in the above-mentioned embodiment. The communication device may be a network device or a module of the network device, or may be a terminal device or a module of the terminal device. The more detailed description about the input interface 1401 , the logic circuit 1402 and the output interface 1403 can be obtained directly by referring to the relevant description of the network device or the terminal device in the above method embodiments, which will not be repeated here.

The embodiment of the present invention also discloses a computer-readable storage medium, on which an instruction is stored, and when the instruction is executed, the method in the foregoing method embodiment is performed.

The embodiment of the present invention also discloses a computer program product including an instruction, when the instruction is executed, the method in the foregoing method embodiment is performed.

An embodiment of the present invention further discloses a communication system, where the communication system includes a network device and a terminal device. For a specific description, reference may be made to the communication method shown in FIG. 3 .

The specific embodiments described above further describe in detail the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above descriptions are only specific embodiments of the present application, and are not intended to limit the The protection scope, any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the present application shall be included within the protection scope of the present application.

Claims (30)

A communication method, comprising: determining a first paging opportunity, where the first paging opportunity is a paging opportunity corresponding to the terminal equipment or the terminal equipment group where the terminal equipment is located; receiving first indication information corresponding to the first paging opportunity from a network device; When the first indication information indicates that there is a paging, a paging from the network device is received at the first paging opportunity. The method according to claim 1, wherein the first indication information is used to indicate whether there is paging. The method according to claim 1 or 2, wherein the first paging opportunity is a paging occasion PO or a paging frame. The method according to claim 2 or 3, wherein the first indication information is used to indicate whether there is a paging comprising: The first indication information is used to indicate whether there is paging in the paging opportunity in the first time window, the first time window is the time window corresponding to the first indication information, and the paging opportunity in the first time window Include the first paging opportunity. The method according to claim 4, wherein when the first paging opportunity is the first PO, the receiving the first indication information corresponding to the first paging opportunity from the network device comprises: determining a first resource according to the first PO; The first indication information from the network device is received on the first resource. The method according to any one of claims 1-5, wherein the first indication information is received in a first bandwidth, the paging is received in a second bandwidth, and the first bandwidth is the same as the second bandwidth. The bandwidth is different, and the switching time from the first bandwidth to the second bandwidth is less than or equal to the first time, and the first time is the switching from the bandwidth that receives the first indication information to the bandwidth that receives the paging. Maximum time required for bandwidth. The method according to claim 6, wherein a time interval between the reception time of the first indication information and the start time of the first time window is greater than or equal to the first time. The method according to any one of claims 1-5, wherein the first indication information is received at a first bandwidth part BWP, the paging is received at a second BWP, and the first BWP and the The second BWP is different, and the switching time from the first BWP to the second BWP is less than or equal to a second time, and the second time is switching from the BWP receiving the first indication information to receiving the The maximum time required to call the BWP. A communication method, comprising: determining a first paging opportunity, where the first paging opportunity is a paging opportunity corresponding to the terminal equipment or the terminal equipment group where the terminal equipment is located; sending first indication information corresponding to the first paging opportunity; sending a page to the terminal device at the first paging opportunity; The first indication information is used for the terminal device to receive a paging at the first paging opportunity when the first indication information indicates that there is a paging. The method according to claim 9, wherein the first indication information is used to indicate whether there is paging. The method according to claim 9 or 10, wherein the first paging opportunity is a paging occasion PO or a paging frame. The method according to claim 10 or 11, wherein the first indication information is used to indicate whether there is a paging comprising: The first indication information is used to indicate whether there is paging in the paging opportunity in the first time window, the first time window is the time window corresponding to the first indication information, and the paging opportunity in the first time window Include the first paging opportunity. The method according to claim 12, wherein when the first paging opportunity is the first PO, the sending the first indication information corresponding to the first paging opportunity comprises: determining a first resource according to the first PO; Send first indication information on the first resource. A communication device, characterized in that it includes: a determining unit, configured to determine a first paging opportunity, where the first paging opportunity is a paging opportunity corresponding to the terminal equipment or the terminal equipment group where the terminal equipment is located; a receiving unit, configured to receive first indication information corresponding to the first paging opportunity from a network device; The receiving unit is further configured to receive a paging from the network device at the first paging opportunity when the first indication information indicates that paging exists. The apparatus according to claim 14, wherein the first indication information is used to indicate whether there is a paging. The apparatus according to claim 14 or 15, wherein the first paging opportunity is a paging occasion PO or a paging frame. The method according to claim 15 or 16, wherein the first indication information is used to indicate whether there is a paging comprising: The first indication information is used to indicate whether there is paging in the paging opportunity in the first time window, the first time window is the time window corresponding to the first indication information, and the paging opportunity in the first time window Include the first paging opportunity. The apparatus according to claim 17, wherein when the first paging opportunity is the first PO, the receiving unit receiving the first indication information corresponding to the first paging opportunity from a network device comprises: determining a first resource according to the first PO; The first indication information from the network device is received on the first resource. The apparatus according to any one of claims 14-18, wherein the first indication information is received in a first bandwidth, the paging is received in a second bandwidth, and the first bandwidth is the same as the second bandwidth. The bandwidth is different, and the switching time from the first bandwidth to the second bandwidth is less than or equal to the first time, and the first time is the switching from the bandwidth that receives the first indication information to the bandwidth that receives the paging. Maximum time required for bandwidth. The apparatus according to claim 19, wherein a time interval between the reception time of the first indication information and the start time of the first time window is greater than or equal to the first time. The apparatus according to any one of claims 14-18, wherein the first indication information is received in a first bandwidth part BWP, the paging is received in a second BWP, and the first BWP and the The second BWP is different, and the switching time from the first BWP to the second BWP is less than or equal to a second time, and the second time is switching from the BWP receiving the first indication information to receiving the The maximum time required to call the BWP. A communication device, characterized in that it includes: a determining unit, configured to determine a first paging opportunity, where the first paging opportunity is a paging opportunity corresponding to the terminal equipment or the terminal equipment group where the terminal equipment is located; a sending unit, configured to send first indication information corresponding to the first paging opportunity; the sending unit, further configured to send a paging to the terminal device at the first paging opportunity; The first indication information is used for the terminal device to receive a paging at the first paging opportunity when the first indication information indicates that there is a paging. The apparatus according to claim 22, wherein the first indication information is used to indicate whether there is paging. The apparatus according to claim 22 or 23, wherein the first paging opportunity is a paging occasion PO or a paging frame. The apparatus according to claim 23 or 24, wherein the first indication information is used to indicate whether there is a paging comprising: The first indication information is used to indicate whether there is paging in the paging opportunity in the first time window, the first time window is the time window corresponding to the first indication information, and the paging opportunity in the first time window Include the first paging opportunity. The apparatus according to claim 25, wherein when the first paging opportunity is the first PO, the sending unit sending the first indication information corresponding to the first paging opportunity comprises: determining a first resource according to the first PO; Send first indication information on the first resource. A communication device, characterized in that it comprises a processor, a memory, an input interface and an output interface, the input interface is used to receive information from other communication devices other than the communication device, and the output interface is used to send information to all communication devices. Other communication devices other than the communication device output information, and the processor invokes the computer program stored in the memory to implement the method according to any one of claims 1-8. A communication device, characterized in that it comprises a processor, a memory, an input interface and an output interface, the input interface is used to receive information from other communication devices other than the communication device, and the output interface is used to send information to all communication devices. Other communication devices other than the communication device output information, and the processor invokes the computer program stored in the memory to implement the method according to any one of claims 9-13. A computer-readable storage medium, characterized in that a computer program or computer instruction is stored in the computer-readable storage medium, and when the computer program or computer instruction is executed, any one of claims 1-13 is implemented. the method described. A chip, characterized in that it includes a processor for executing a program stored in a memory, and when the program is executed, causes the chip to execute the method according to any one of claims 1-13.

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