CN110446259B

CN110446259B - Position determination method of paging opportunity and communication equipment

Info

Publication number: CN110446259B
Application number: CN201810421148.0A
Authority: CN
Inventors: 范江胜; 梁靖; 全海洋
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-05-04
Filing date: 2018-05-04
Publication date: 2022-04-15
Anticipated expiration: 2038-05-04
Also published as: CN110446259A

Abstract

The invention provides a method for determining the position of a paging opportunity and communication equipment, and relates to the technical field of communication. The method for determining the position of the paging opportunity comprises the following steps: acquiring a resource position of a reference wireless frame, a first offset value of a target SSB period containing a target SSB in a paging period relative to the resource position of the reference wireless frame, a second offset value of a time slot position of the target SSB and a first paging opportunity behind the target SSB, and a third offset value of other paging opportunities behind the target SSB and the first paging opportunity; acquiring the resource position of the target SSB according to the resource position of the reference wireless frame and the first offset value; and determining the position of the paging opportunity in the paging cycle according to the resource position of the target SSB, the second offset value and the third offset value. By the scheme, the paging opportunity position can be accurately determined in the communication process, and the communication reliability is ensured.

Description

Position determination method of paging opportunity and communication equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for determining a location of a paging opportunity and a communication device.

Background

In an existing Long Term Evolution (LTE) system, each Paging Opportunity (PO) occupies only one subframe, and the position of the PO appearing in a radio frame is relatively fixed, and in an FDD system, for example, the PO appears only in subframes with numbers of 0, 4, 5, and 9 in each radio frame. Since the high-frequency new air interface NR system needs to perform beam scanning operation, the length of one PO may exceed one subframe, so that the PO in subframe 9 in the current radio frame overlaps with the PO in subframe 0 in the next infinite frame (subframes 4 and 5 are similar), which directly causes the system to be unable to normally page most terminals belonging to the two POs, obviously, this situation cannot occur; on the other hand, a new technical requirement such as two possible position configuration relations between a Synchronization Signal Block (SSB), Remaining Minimum System Information (RMSI) and a PO, three modes of SSB and RMSI time-frequency resource positions, a Physical Downlink Control Channel (PDCCH) common search space principle monitored by a terminal, and the like is introduced into the NR System, so that the paging mechanism following LTE cannot work at all because the position where the System PO appears is no longer determined by a Downlink subframe which only transmits Downlink data in uplink and Downlink subframe matching, and the PO, the SSB, and the RMSI of the NR System have correlation mechanisms, so that the position design of the NR paging PO is greatly limited by the new technical condition.

Disclosure of Invention

The embodiment of the invention provides a method for determining the position of a paging opportunity and communication equipment, which are used for solving the problem that the definition rule of the position of the existing paging opportunity is difficult to meet the requirement of an NR (noise-and-noise) system in a high-frequency scene.

In order to solve the foregoing technical problem, an embodiment of the present invention provides a method for determining a location of a paging opportunity, where the method is applied to a network device or a terminal, and the method includes:

acquiring a resource position of a reference wireless frame, a first offset value of a target SSB period containing a target SSB in a paging period relative to the resource position of the reference wireless frame, a second offset value of a time slot position of the target SSB and a first paging opportunity behind the target SSB, and a third offset value of other paging opportunities behind the target SSB and the first paging opportunity;

acquiring the resource position of the target SSB according to the resource position of the reference wireless frame and the first offset value;

and determining the position of the paging opportunity in the paging cycle according to the resource position of the target SSB, the second offset value and the third offset value.

Further, the obtaining method of the first offset value of the target SSB period containing the target SSB in the paging cycle relative to the resource location of the reference radio frame includes:

acquiring the total number of paging opportunities in a paging cycle;

and determining a first offset value of a target SSB period containing the target SSB in one paging cycle of the paging opportunities of the terminal relative to the resource position of the reference wireless frame according to the total number of the paging opportunities.

Further, the step of determining, according to the total number of the paging opportunities, a first offset value of a target SSB period including a target SSB in a paging cycle in which the paging opportunities of the terminal are located with respect to a resource location of a reference radio frame includes:

according to the formula: offset_m＝T_SSB(UE _ IDmod M1)/N), determining a first offset value of a target SSB period containing a target SSB in a paging cycle in which a paging opportunity of the terminal is located, relative to a resource location of a reference radio frame;

wherein, Offset_mIs a first offset value; t is_SSBIs the SSB period length; the UE _ ID is a terminal identifier; m1 is the total number of paging opportunities in one paging cycle; n is the number of paging opportunities in one SSB period.

Further, the obtaining method of the second offset value of the slot position where the target SSB and the first paging opportunity after the target SSB are located includes:

acquiring a mode of a target SSB and a time-frequency resource position of the residual minimum system information RMSI;

and acquiring a second offset value according to a first preset relation between a target SSB corresponding to the mode and a Physical Downlink Control Channel (PDCCH) of the RMSI associated with the target SSB.

Further, the manner for acquiring the third offset value of the first paging opportunity and the other paging opportunities after the target SSB includes:

acquiring the total number of paging opportunities in a paging cycle;

and determining a third offset value of other paging opportunities after the target SSB and the first paging opportunity according to the total number of the paging opportunities.

Further, the step of determining a third offset value of the other paging opportunities after the target SSB and the first paging opportunity according to the total number of the paging opportunities includes:

according to the formula: offset_n＝offset₂(UE _ IDmod M1) mod N) determining a third offset value for the other paging opportunities after the target SSB from the first paging opportunity;

wherein, Offset_nIs a third offset value; offset₂The number of time slots between two adjacent paging opportunities in a target SSB period is set; m1 is the total number of paging opportunities in one paging cycle; the UE _ ID is a terminal identifier; n is the number of paging opportunities in one SSB period.

Further, the method for acquiring the number of time slots spaced between two adjacent paging opportunities in the target SSB cycle includes:

and acquiring the number of time slots between two adjacent paging opportunities in the target SSB period according to a second preset relation between the target SSB corresponding to the mode and the PDCCH of the RMSI associated with the target SSB.

Further, the step of obtaining the total number of paging opportunities in a paging cycle includes:

according to the formula:

acquiring the total number of paging opportunities;

wherein, M1 is the total number of paging opportunities in one paging cycle; n is the number of paging opportunities in an SSB period; t is the length of the paging cycle; SFN_DRX,SSBThe number of radio frames which are the resource position of the radio frame at the beginning of the paging cycle and the interval between the radio frames where the first SSB is positioned later; t is_SSBIs the SSB period length.

Further, the determination method of the number of paging opportunities in one SSB cycle is as follows:

according to the formula:

determining the number of paging opportunities in an SSB period;

wherein, N is the number of paging opportunities in an SSB period; t is a preset wireless frame range counted from a first wireless frame of a target SSB period;

the total number of time slots contained in the next wireless frame of the subcarrier mu value; offset₁Is a second offset value; offset₂The number of time slots between two adjacent paging opportunities in a target SSB period is set; floor () is a floor function.

Further, the step of determining the location of the paging opportunity in the paging cycle comprises:

according to the formula:

determining a system frame number of a paging opportunity in a paging cycle;

wherein the SFN is_PA system frame number in a paging cycle for a paging opportunity; SFN_DRXResource location for paging cycle start radio frame, and SFN_DRXW is the corner mark of the first paging frame of the system; t is the length of the paging cycle; SFN_DRX,SSBThe number of radio frames which are the resource position of the radio frame at the beginning of the paging cycle and the interval between the radio frames where the first SSB is positioned later; offset_mIs a first offset value;

the total number of time slots contained in the next wireless frame of the subcarrier mu value; offset₁Is a second offset value; offset_nIs a third offset value; floor () is a floor function.

Further, the step of determining the location of the paging opportunity in the paging cycle further comprises:

according to the formula:

determining paging opportunities in radio frame SFN_PThe corresponding starting timeslot number in (1);

wherein n is_pSFN in radio frame for paging opportunities_PThe corresponding starting timeslot number in (1); n is_SSB,iNumbering the time slots of the ith SSB; offset₁Is a second offset value; offset_nIs a third offset value;

the total number of timeslots contained in the next radio frame is the subcarrier μ value.

Further, the resource location of the reference radio frame is: the sum of the resource position of the paging cycle starting wireless frame, the resource position of the paging cycle starting wireless frame and the number of the wireless frames spaced between the wireless frames where the first SSB is located.

The embodiment of the invention also provides communication equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor, wherein the communication equipment is network side equipment or a terminal; wherein the processor implements the following steps when executing the computer program:

Further, the processor, when executing the computer program, implements the steps of:

acquiring the total number of paging opportunities in a paging cycle;

according to the formula: offset_n＝offset₂(UE _ IDmod M1) mod N), other seeks after the determination of the target SSBA third offset value for the paging opportunity from the first paging opportunity;

according to the formula:

acquiring the total number of paging opportunities;

according to the formula:

determining the number of paging opportunities in an SSB period;

according to the formula:

determining a system frame number of a paging opportunity in a paging cycle;

according to the formula:

An embodiment of the present invention further provides a communication device, where the communication device is a network side device or a terminal, and the communication device includes:

a first obtaining module, configured to obtain a resource location of a reference radio frame, a first offset value of a target SSB period including a target SSB in a paging cycle with respect to the resource location of the reference radio frame, a second offset value of a slot location where the target SSB and a first paging opportunity after the target SSB are located, and a third offset value of other paging opportunities after the target SSB and the first paging opportunity;

a second obtaining module, configured to obtain a resource location of the target SSB according to the resource location of the reference radio frame and the first offset value;

a determining module, configured to determine a location of a paging opportunity in a paging cycle according to the resource location of the target SSB, the second offset value, and the third offset value.

Further, when acquiring the first offset value of the target SSB period containing the target SSB in the paging period relative to the resource location of the reference radio frame, the first acquiring module includes:

a first obtaining unit, configured to obtain a total number of paging opportunities in a paging cycle;

and the first determining unit is used for determining a first deviation value of a target SSB period containing the target SSB in one paging cycle of the paging opportunities of the terminal relative to the resource position of the reference wireless frame according to the total number of the paging opportunities.

Further, the first determining unit is configured to:

Further, when acquiring the second offset value of the slot position where the target SSB and the first paging opportunity after the target SSB are located, the first acquiring module includes:

the second acquisition unit is used for acquiring the mode of the target SSB and the time-frequency resource position of the residual minimum system information RMSI;

a third obtaining unit, configured to obtain a second offset value according to a first preset relationship between the target SSB corresponding to the mode and a physical downlink control channel PDCCH of the RMSI associated with the target SSB.

Further, the acquiring module, when acquiring the third offset value of the first paging opportunity and other paging opportunities after the target SSB, includes:

a fourth obtaining unit, configured to obtain a total number of paging opportunities in a paging cycle;

a second determining unit, configured to determine, according to the total number of the paging opportunities, a third offset value between the other paging opportunities after the target SSB and the first paging opportunity.

Further, the second determining unit is configured to:

wherein, Offset_nIs a third offset value; offset₂For two adjacent in the target SSB periodThe number of time slots spaced between paging opportunities; m1 is the total number of paging opportunities in one paging cycle; the UE _ ID is a terminal identifier; n is the number of paging opportunities in one SSB period.

Further, the acquisition mode of the number of time slots spaced between two adjacent paging opportunities in the target SSB period is as follows:

Further, the manner of obtaining the total number of paging opportunities in one paging cycle is as follows:

according to the formula:

acquiring the total number of paging opportunities;

according to the formula:

determining the number of paging opportunities in an SSB period;

for the total number of time slots contained in the next radio frame for the subcarrier mu valueCounting; offset₁Is a second offset value; offset₂The number of time slots between two adjacent paging opportunities in a target SSB period is set; floor () is a floor function.

Further, the determination module is to:

according to the formula:

determining a system frame number of a paging opportunity in a paging cycle;

Further, the determining module is further configured to:

according to the formula:

The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for determining a location of a paging opportunity described above.

The invention has the beneficial effects that:

according to the scheme, the position of the paging opportunity in the paging cycle is determined by utilizing the resource position of the target SSB, the second offset value of the time slot position of the first paging opportunity after the target SSB, and the third offset values of other paging opportunities after the target SSB and the first paging opportunity, so that the position of the paging opportunity can be accurately determined in the communication process, and the communication reliability is ensured.

Drawings

FIG. 1 is a schematic diagram of a first mode of defining SSB and RMSI time-frequency resource locations in an NR system;

FIG. 2 is a diagram illustrating a second mode of SSB and RMSI time-frequency resource location defined in the NR system;

FIG. 3 is a diagram illustrating a third mode of SSB and RMSI time-frequency resource location defined in the NR system;

FIG. 4 is a schematic diagram showing a first configuration relationship among SSBs, RMSIs and POs defined in the NR system;

FIG. 5 is a schematic diagram showing a first configuration relationship among SSBs, RMSIs and POs defined in the NR system;

FIG. 6 is a flow chart illustrating a method for determining the location of a paging opportunity in accordance with an embodiment of the present invention;

FIG. 7 shows a block diagram of a communication device of an embodiment of the invention;

fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Currently, the physical layer defines two time-frequency resource relationships between a Synchronization Signal Block (SSB), Remaining Minimum System Information (RMSI), and Paging Occasions (PO), where the first indicates that the time-frequency resource relationship between the SSB and the PO can be given by the configuration in the RMSI associated with the SSB; another provision is that the time-frequency resource relationship between SSB and PO is the same as the time-frequency resource relationship between SSB and associated RMSI. Although the physical layer gives the time-frequency resource correspondence between the two SSBs and POs, it does not give a description of the terminal paging listening behavior specified by the higher-layer system, that is, a description of which terminals should listen to paging at which PO in one paging cycle is lacked. The invention aims to solve the problem of how to monitor the position of the PO on the network side under the first time-frequency resource relationship between the SSB and the PO, and particularly provides a System Frame Number (SFN) index (index) and a Slot index (Slot index) of each terminal for monitoring a paging message.

In order to enable those skilled in the art to better understand the technical solution of the embodiment of the present invention, first, two possible position configuration relationships among SSBs, RMSIs, and POs, three modes of SSBs and RMSI time-frequency resource positions, and a Physical Downlink Control Channel (PDCCH) common search space principle, etc. that a terminal monitors, which are newly introduced into an NR system, are explained below.

(1) LTE paging background knowledge

User Equipment (UE, also called a terminal) uses Discontinuous Reception (DRX) to save energy consumption in an idle state, and a basic value range of a DRX cycle in an LTE system is {320ms, 640ms, 1280ms, and 2560ms }. The terminal is associated with a paging frame PF in each DRX period, the concept of the paging frame and the LTE radio frame is consistent, the association principle of the UE and the PF is shown in a PF calculation formula, one or more (at most four) POs exist in each PF, each PO represents the length of one radio subframe, the positions of the POs in the PFs are relatively fixed, only 1,2 or 4 POs can be determined to appear in one PF according to different system parameters, and the calculation principle of the specific PO is shown in the PO calculation formula, tables 1 and 2.

The terminal only monitors one PO in one DRX period, and the terminal keeps a dormant state at other moments, thereby achieving the purpose of saving power. The terminal uses a public Paging network temporary identity P-RNTI to demodulate (PDCCH) at the corresponding PO moment, demodulates a corresponding Physical Downlink Shared Channel (PDSCH) according to a time-frequency resource indicated in (DCI), transmits Paging Record (Paging Record) Information in the PDSCH, and determines whether to wake up by searching the ID Information (international mobile subscriber identity IMSI or S-TMSI) of the terminal in the Paging Record. The DRX cycle and some common parameters are provided by system information, and PF and PO are calculated by the following formula:

PF：SFN mod T＝(T div N)*(UE_ID mod N)

PO：i_s＝floor(UE_ID/N)mod Ns

the following are parameters used to calculate PF and i _ s:

t: indicating a DRX cycle, T being determined by the shortest DRX cycle, and if determined by higher layers, a default DRX cycle value is broadcasted in the system information; using a default value if the UE specific DRX value is not provided by higher layers;

-nB:4T,2T,T,T/2,T/4,T/8,T/16,T/32；

-N:min(T,nB)；

-Ns:max(1,nB/T)；

-UE_ID:IMSI mod 1024；

the IMSI is a sequence of digits consisting of the numbers 0 to 9, and the IMSI value in the above formula should be understood as a decimal value, i.e. the first digit represents the most significant digit.

For example: IMSI 12(digit 11, digit2 2);

in the calculation, the IMSI in the example is understood to be a decimal number "12", instead of "1x16+2 ═ 18".

The DRX parameters stored in the UE should be updated whenever the DRX parameters provided in the system message SI change. If the UE does not have an IMSI, for example, the UE performs emergency communication without a USIM, the UE should perform the above PF and PO calculation using a default UE ID, i.e., 0.

The LTE system includes FDD and TDD modes, and PO definition rules in different modes are shown in table 1 and table 2, where table 1 is a definition rule of PO in FDD mode and table 2 is a definition rule of PO in TDD mode.

TABLE 1

Ns	PO when i_s＝0	PO when i_s＝1	PO when i_s＝2	PO when i_s＝3
					1	0	N/A	N/A	N/A
2	0	5	N/A	N/A
					4	0	1	5	6

TABLE 2

In tables 1 and 2, n (not)/a (applicable) indicates no definition.

(2) Three modes of SSB and RMSI time-frequency resource location defined in NR systems.

Pattern 1(Pattern 1): as shown in fig. 1, the PDCCH and PDSCH corresponding to the SSB and the associated RMSI are separated in time, but the bandwidths used by the two are overlapped, the period of the RMSI in this mode is only 20ms, and the period value of the SSB may be any one of {5ms, 10ms, 20ms, 40ms, 80ms, and 160ms };

pattern 2(Pattern 2): as shown in fig. 2, the PDCCH corresponding to the SSB and the associated RMSI is separated in time, the PDSCH corresponding to the SSB and the associated RMSI is overlapped in time, but the PDCCH and the PDSCH corresponding to the SSB and the RMSI do not overlap in frequency domain, in this mode, the periods of the RMSI and the SSB are the same, and the period value may be any one of {5ms, 10ms, 20ms, 40ms, 80ms, and 160ms };

pattern 3(Pattern 3): as shown in fig. 3, the PDCCH and PDSCH corresponding to the SSB and the associated RMSI coincide in time, but the PDCCH and PDSCH corresponding to the SSB and RMSI do not overlap in frequency domain, and in this mode, the periods of the RMSI and the SSB are the same, and the period value may be any one of {5ms, 10ms, 20ms, 40ms, 80ms, and 160ms }.

(3) Two possible configuration relationships between SSBs, RMSIs and POs defined in the NR system.

Relation 1: as shown in fig. 4, the time-frequency resource relationship between the SSB and the PO may be given by the configuration in the RMSI associated with the SSB;

relation 2: as shown in fig. 5, the time-frequency resource relationship between SSB and PO is the same as the time-frequency resource relationship between SSB and associated RMSI.

(4) The NR system terminal listens to the common search space principle.

If the public search space of the PDCCH exists, the terminal determines which continuous resource blocks or continuous symbols are used as the PDCCH control resource public search space according to 4 bits in the RMSI-PDCCH-Config parameter and tables 3 to 12; the terminal determines the PDCCH monitoring time according to tables 13 to 17 by comparing 4 bits in the RMSI-PDCCH-Config parameter, which exists in a Master Information Block (Master Information Block) of the system. SFN_CAnd n_CControl resource SFN and slot indices, SFN and sub-carrier spacing based on control resource set_SSB,iAnd n_SSB,iSFN and slot indices derived based on subcarrier spacing of the control resource set, respectively, where the indices are SSB and SFN of i_SSB,iAnd n_SSB,iAre overlapping in time.

When the position relationship between the SSB and the RMSI is mode 1, the terminal monitors the PDCCH in a common search space with a duration of two consecutive slots, where an angle of a first slot of the two slots is denoted by n₀SSB, n with angle i₀The calculation formula of (a) is as follows:

SFN corresponding to the time slot_CNumber satisfies the following condition:

where M and O are given by tables 13 and 14, μ ∈ {0,1,2,3} indicates the subcarrier spacing used for PDCCH reception defined in protocol TS 38.211. n is_CThe corresponding corner mark of the first symbol is also the corner mark of the first symbol given in tables 13 and 14.

When bits of SSB and RMSIWhen the position relation is mode 2 or mode 3, the terminal monitors the PDCCH only in a slot common search space, and the period of the common search space is consistent with that of the SSB. When the angle of the SSB is denoted as i, n is determined by the contents of tables 15 to 17_CAnd SFN_CAnd (4) angle scale values.

Table 3 is a table of correspondence between the resource block set in the PDCCH search space and the slot symbol of the control resource set, where the subcarrier spacing combination of the SSB and the PDCCH is {15,15} kHz, that is, the subcarrier spacing of the SSB is 15kHz, the subcarrier spacing of the PDCCH is 15kHz, and the minimum bandwidth is 5 MHz.

TABLE 3

Table 4 is a table of correspondence between the resource block set in the PDCCH search space and the slot symbol of the control resource set, where the combination of the SSB and the subcarrier spacing of the PDCCH is {15,30} kHz, and the minimum bandwidth is 5 MHz.

TABLE 4

Table 5 is a table of correspondence between the resource block set in the PDCCH search space and the slot symbol of the control resource set, where the combination of the SSB and the subcarrier spacing of the PDCCH is {30,15} kHz, and the minimum bandwidth is 5MHz or 10 MHz.

TABLE 5

Table 6 is a table of correspondence between the resource block set in the PDCCH search space and the slot symbol of the control resource set, where the combination of the SSB and the PDCCH subcarrier spacing is {30,30} kHz, and the minimum bandwidth is 5MHz or 10 MHz.

TABLE 6

Table 7 is a table of correspondence between the resource block set in the PDCCH search space and the slot symbol of the control resource set, where the combination of the SSB and the subcarrier spacing of the PDCCH is {30,15} kHz, and the minimum bandwidth is 40 MHz.

TABLE 7

Table 8 is a table of correspondence between the resource block set in the PDCCH search space and the slot symbol of the control resource set, where the combination of the SSB and the subcarrier spacing of the PDCCH is {30,30} kHz, and the minimum bandwidth is 40 MHz.

TABLE 8

Table 9 is a table of correspondence between the resource block set in the PDCCH search space and the slot symbol of the control resource set, where the combination of the SSB and the subcarrier spacing of the PDCCH is {120,60} kHz.

TABLE 9

Table 10 is a table of the correspondence between the resource block set and the slot symbol of the control resource set in the PDCCH search space, wherein the combination of the SSB and the subcarrier spacing of the PDCCH is {120,120} kHz.

Watch 10

Table 11 is a table of correspondence between the resource block set in the PDCCH search space and the slot symbol of the control resource set, where the combination of the SSB and the subcarrier spacing of the PDCCH is {240,60} kHz.

TABLE 11

Table 12 is a table of the correspondence between the resource block set in the PDCCH search space and the slot symbol of the control resource set, where the combination of the SSB and the subcarrier spacing of the PDCCH is {240,120} kHz.

TABLE 12

In tables 1 to 12, Index is an Index, SS/PBCH block and control resource set multiplexing pattern is a multiplexing mode of a control resource set and SSB or physical broadcast channel PBCH, and Number of RBs is

Represents the number of resource blocks RB; number of Symbols

The number of symbols Symbol occupied by the control channel is represented, Offset is Offset, and the unit is RB; reserved represents a Reserved but not yet defined new scenario.

Table 13 is a parameter table of PDCCH monitoring times corresponding to PDCCH common search spaces, SSBs, and control resource sets in mode 1 and frequency range 1. The frequency range 1 refers to a frequency band below 6 GHz; both O and M are table-defined values.

Watch 13

Table 14 is a table of parameters for PDCCH monitoring time corresponding to PDCCH common search space, SSB and control resource set in mode 1 and frequency range 2. The frequency range 2 refers to a frequency band above 6 GHz; both O and M are table-defined values.

TABLE 14

In tables 13 to 14, Index is an Index, Number of search space sets per slot is the Number of search space sets in one slot, First symbol Index represents the Index of the First symbol, and O and M are constants defined in the tables.

Table 15 is a table of PDCCH monitoring times for PDCCH common search spaces, SSBs and control resource sets in mode 2 and { SSB, PDCCH } subcarrier combinations at {120,60} kHz.

Watch 15

Table 16 is a table of PDCCH monitoring times for PDCCH common search space, SSB and control resource set in mode 2 and SSB, PDCCH subcarrier combination {240,120} kHz.

TABLE 16

Table 17 is a table of PDCCH monitoring time instants for PDCCH common search spaces, SSBs and control resource sets in mode 3 and SSBs, PDCCH subcarrier combinations at 120,120 kHz.

TABLE 17

In tables 15 to 17, Index is an Index, PDCCH monitoring occasions indicates that a PDCCH monitoring time includes a system frame number SFN and a slot number (slot number), and First symbol Index indicates an Index of a First symbol; the Number of search space sets per slot is the Number of search space sets in a slot.

The invention provides a method for determining the position of a paging opportunity and communication equipment, aiming at the problem that the existing definition rule of the position of the paging opportunity is difficult to meet the requirement of an NR (noise-and-noise) system in a high-frequency scene.

The main idea of the embodiment of the invention is that the positions of the radio frame and the time slot corresponding to the paging opportunity can be obtained through the positions of the radio frame and the time slot where the SSB is located, the offset value given in the RMSI corresponding to the SSB and the related configuration information given by the system information, and in a paging cycle, different terminals can find a unique PO for paging and monitoring according to their globally unique identity (IMSI) or the identifier assigned by the core network (S-TMSI or the terminal identifier newly defined by 5G).

Specifically, as shown in fig. 6, an embodiment of the present invention provides a method for determining a location of a paging opportunity, which is applied to a network side device or a terminal, and includes:

step 61, acquiring a resource position of a reference wireless frame, a first offset value of a target SSB period containing a target SSB in a paging period relative to the resource position of the reference wireless frame, a second offset value of a time slot position of a first paging opportunity after the target SSB and the target SSB, and a third offset value of other paging opportunities after the target SSB and the first paging opportunity;

it should be noted that the resource location of the reference radio frame is a reference point for determining the paging opportunity location, and specifically, the resource location of the reference radio frame is a resource location of a radio frame at the beginning of a paging cycle (i.e. SFN)_DRX) The number of radio frames (i.e. SFN) spaced from the resource location of the radio frame at the beginning of the paging cycle and the radio frame in which the first SSB is located_DRX,SSB) Summing; it should be noted that the second offset value refers to the slot position of the first paging opportunity after the target SSB and the number of slots separated by the target SSB.

Step 62, obtaining the resource position of the target SSB according to the resource position of the reference radio frame and the first offset value;

it should be noted that, by using the resource location of the reference radio frame and the first offset value, the location of the target SSB period including the target SSB can be determined, where the location of the target SSB period refers to the starting location of the target SSB period, and after the location of the target SSB period is obtained, the resource location of the target SSB needs to be determined, and when the method is applied to the terminal, the resource location of the target SSB is determined in a manner that: the terminal monitors the SSB after the position of the target SSB period, and the received SSB is taken as the target SSB, so that the resource position of the target SSB is determined; when the method is applied to the network device, the network device can directly acquire the resource position of the target SSB to be sent, because the network device knows the sending condition of the SSB after the resource position of the target SSB is known.

And 63, determining the position of the paging opportunity in the paging cycle according to the resource position of the target SSB, the second offset value and the third offset value.

After determining the resource location of the target SSB, determining the location of the paging opportunity in the paging cycle according to the offset of the paging opportunity relative to the target SSB, where the location of the paging opportunity mainly includes: the system frame number of the paging opportunity in the paging period and the starting slot number of the paging opportunity under the corresponding system frame.

It should be noted that, since the second offset value of the slot position where the first paging opportunity after the target SSB is located is directly configured in the minimum system information (RMSI), the obtaining manner of the second offset value is as follows: acquiring a mode of a target SSB and a time-frequency resource position of the Residual Minimum System Information (RMSI); and acquiring a second offset value according to a first preset relation between a target SSB corresponding to the mode and a Physical Downlink Control Channel (PDCCH) of the RMSI associated with the target SSB. It should be noted that the mode is one of the modes 1 to 3, and the first predetermined relationship refers to a table defined by a physical layer corresponding to a certain mode (i.e., one of the tables 1 to 17).

Next, the following describes how to acquire the first offset value of the target SSB period including the target SSB in the paging cycle in step 61 with respect to the resource location of the reference radio frame and the third offset value of the other paging opportunities after the target SSB and the first paging opportunity, respectively.

Firstly, the obtaining mode of the first offset value of the target SSB period containing the target SSB in the paging period relative to the resource position of the reference wireless frame is as follows:

acquiring the total number of paging opportunities in a paging cycle;

Further, the implementation manner of acquiring the total number of paging opportunities in one paging cycle is specifically as follows:

according to the formula:

acquiring the total number of paging opportunities;

Further, according to the total number of the paging opportunities, the step of determining a first offset value of a target SSB period including a target SSB in a paging cycle in which the paging opportunities of the terminal are located with respect to a resource location of a reference radio frame includes:

Secondly, the obtaining mode of the third offset value of the other paging opportunities after the target SSB and the first paging opportunity is as follows:

acquiring the total number of paging opportunities in a paging cycle;

according to the formula:

acquiring the total number of paging opportunities;

Note that the offset is₂The acquisition mode is as follows: acquiring a mode of a target SSB and a time-frequency resource position of the residual minimum system information RMSI; acquiring a target SSB through a second preset relation between the target SSB corresponding to the mode and the PDCCH of the RMSI associated with the target SSBThe number of time slots spaced between two adjacent paging opportunities in the cycle. It should be noted that the mode is one of the modes 1 to 3, and the second predetermined relationship refers to a table defined by a physical layer corresponding to a certain mode (i.e., one of the tables 1 to 17).

It should be noted that, the above-mentioned obtaining the second offset value and the offset₂The second offset value and the offset can be obtained for a simultaneous process, i.e. by looking up the same table for the pattern₂。

It should be noted that the UE _ ID may be a globally unique identity (IMSI) or an identifier allocated by the core network (S-TMSI or a terminal identifier newly defined by 5G); SFN_DRX,SSBT and T_SSBThe configuration is performed in the system information.

It should be further noted that, when acquiring the total number of paging opportunities in one paging cycle, the number of paging opportunities in one SSB cycle is used, and specifically, the determination method of the number of paging opportunities in one SSB cycle is as follows:

according to the formula:

determining the number of paging opportunities in an SSB period;

wherein, N is the number of paging opportunities in an SSB period; t is a preset wireless frame range calculated from the first wireless frame of the target SSB period, and it should be noted that the specific value of the parameter t is specified by the system, that is, only a certain wireless frame range after the SSB synchronization symbol can be used for placing paging opportunities in each SSB period;

Specifically, the system frame number of the paging opportunity in the paging cycle in the position of the paging opportunity in the paging cycle is determined in the following manner:

according to the formula:

determining a system frame number of a paging opportunity in a paging cycle;

Specifically, after determining the system frame number of the paging opportunity in the position of the paging opportunity in the paging cycle, the determination method needs to determine the starting timeslot number of the paging opportunity in the position of the paging opportunity in the paging cycle in the corresponding system frame in the paging cycle in the following manner:

according to the formula:

wherein n is_pSFN in radio frame for paging opportunities_PThe corresponding starting timeslot number in (1); n is_SSB,iThe slot number of the ith SSB (i.e., the slot number of the target SSB); offset₁Is a second offset value; offset_nIs a third offset value;

It should be noted that, because there are three modes of SSB and RMSI time-frequency resource locations defined in the NR system, the location determination method for the paging opportunity in the embodiment of the present invention is used for all three modes, except that the above-mentioned T mode is used for the above-mentioned T mode_SSBFor mode 1, T_SSB2; for mode 2 or 3, T_SSBMay be any of {0.5, 1,2, 4, 8, 16 }.

Since the SSB is a periodic symbol unit used by the NR system to complete broadcasting and synchronization, and the period thereof may be any one of {5ms, 10ms, 20ms, 40ms, 80ms, and 160ms }, and the basic value range of the DRX paging cycle is {320ms, 640ms, 1280ms, and 2560ms }, it can be seen from the values of the two cycles that, regardless of the value of the DRX paging cycle, there is one SSB symbol unit within a certain offset range of the starting position of each DRX cycle, so that, by determining the starting position of each paging cycle, the position of the next SSB can be found every SSB cycle from the first SSB at the beginning of the paging cycle, that is, as long as the starting position and the SSB cycle of any paging cycle are determined, the position of any SSB in any paging cycle can be uniquely determined, and after the position of the SFN and slot of any SSB is determined, an offset value (i.e., the above-mentioned offset) is obtained via the SSB-associated RMSI₁) After the resource position value of the first PO relative to the SSB after the SSB is given, and the position of the first PO is determined, the remaining PO positions are given in turn by the relevant paging configuration parameters in the system information by taking the position where the first PO appears as a reference, specifically, the second PO is 1 basic offset unit relative to the first PO position, the third PO is 2 basic offset units relative to the first PO position, …, the Nth PO is N-1 basic offset units relative to the first PO position, the basic offset units are broadcasted by the system information, in this way, each terminal can uniquely determine a paging opportunity for paging monitoring, and the paging monitoring is carried out by each terminalThe PO position determining method can ensure that the high-frequency NR system does not exceed the time-frequency resource range specified by NR when applied, and ensures the reliability of communication.

As shown in fig. 7, an embodiment of the present invention provides a communication device 70, where the communication device is a network side device or a terminal, and includes:

a first obtaining module 71, configured to obtain a resource location of a reference wireless frame, a first offset value of a target SSB period including a target SSB in a paging cycle with respect to the resource location of the reference wireless frame, a second offset value of a slot location where the target SSB and a first paging opportunity after the target SSB are located, and a third offset value of other paging opportunities after the target SSB and the first paging opportunity;

a second obtaining module 72, configured to obtain a resource location of the target SSB according to the resource location of the reference radio frame and the first offset value;

a determining module 73, configured to determine a location of the paging opportunity in the paging cycle according to the resource location of the target SSB, the second offset value, and the third offset value.

Further, the first obtaining module 71, when obtaining the first offset value of the target SSB period containing the target SSB in the paging period relative to the resource location of the reference radio frame, includes:

Further, the first determining unit is configured to:

wherein, Offset_mIs a first offsetA value; t is_SSBIs the SSB period length; the UE _ ID is a terminal identifier; m1 is the total number of paging opportunities in one paging cycle; n is the number of paging opportunities in one SSB period.

Further, when acquiring the second offset value of the timeslot position where the target SSB and the first paging opportunity after the target SSB are located, the first acquiring module 71 includes:

Further, the first obtaining module 71, when obtaining the third offset value of the first paging opportunity and other paging opportunities after the target SSB, includes:

Further, the second determining unit is configured to:

according to the formula:

acquiring the total number of paging opportunities;

according to the formula:

determining the number of paging opportunities in an SSB period;

Further, the determining module 73 is configured to:

according to the formula:

determining a system frame number of a paging opportunity in a paging cycle;

Further, the determining module 73 is further configured to:

according to the formula:

Specifically, the resource location of the reference radio frame is: the sum of the resource position of the paging cycle starting wireless frame, the resource position of the paging cycle starting wireless frame and the number of the wireless frames spaced between the wireless frames where the first SSB is located.

It should be noted that the embodiment of the communication device is a communication device corresponding to the embodiment of the method one to one, and all implementation manners in the embodiment of the method are applicable to the embodiment of the communication device, and the same technical effect can be achieved.

As shown in fig. 8, an embodiment of the present invention further provides a communication device 80, which includes a processor 81, a transceiver 82, a memory 83, and a computer program stored on the memory 83 and operable on the processor 81; the transceiver 82 is connected to the processor 81 and the memory 83 through a bus interface, wherein the processor 81 is configured to read a program in the memory and execute the following processes:

It should be noted that in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 81 and various circuits represented by memory 83 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 82 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 81 is responsible for managing the bus architecture and general processing for different terminals, and the memory 83 may store data used by the processor 81 in performing operations.

Optionally, the processor, when executing the computer program, implements the following steps:

acquiring the total number of paging opportunities in a paging cycle;

according to the formula: offset_n＝offset₂*((UE_IDmod M1) mod N) determining a third offset value for the other paging opportunities after the target SSB from the first paging opportunity;

according to the formula:

acquiring the total number of paging opportunities;

according to the formula:

determining the number of paging opportunities in an SSB period;

wherein, N is the number of paging opportunities in an SSB period; t is a predetermined radio frame range from the first radio frame of the target SSB period；

according to the formula:

determining a system frame number of a paging opportunity in a paging cycle;

according to the formula:

wherein n is_pSFN in radio frame for paging opportunities_PCorresponding to in (1)The initial time slot number; n is_SSB,iNumbering the time slots of the ith SSB; offset₁Is a second offset value; offset_nIs a third offset value;

The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for determining a location of a paging opportunity.

The communication device mentioned above may be a terminal or a network side device. The network side device may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (evolved Node B, eNB or eNodeB) in LTE, a relay Station or Access point, or a Base Station in a future 5G network, and the like, which is not limited herein.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A method for determining the location of a paging opportunity is applied to a network side device or a terminal, and is characterized by comprising the following steps:

determining the position of the paging opportunity in the paging cycle according to the resource position of the target SSB, the second offset value and the third offset value;

the resource position of the reference radio frame is as follows: the sum of the resource position of the paging cycle starting wireless frame, the resource position of the paging cycle starting wireless frame and the number of the wireless frames spaced between the wireless frames where the first SSB is located.

2. The method of claim 1, wherein the obtaining the first offset value of the target SSB period containing the target SSB in the paging cycle relative to the resource location of the reference radio frame comprises:

acquiring the total number of paging opportunities in a paging cycle;

3. The method of claim 2, wherein the step of determining a first offset value of a target SSB period containing a target SSB in a paging cycle in which paging opportunities of the terminal are located relative to a resource location of a reference radio frame according to the total number of the paging opportunities comprises:

according to the formula: offset_m＝T_SSB(UE _ IDmod M1)/N), determining a target SSB period containing a target SSB in one paging cycle in which a paging opportunity of the terminal is located, relative to a baseA first offset value of a resource location of the quasi-radio frame;

4. The method of claim 1, wherein the obtaining of the second offset value of the slot position of the target SSB and the first paging opportunity after the target SSB comprises:

5. The method of claim 1, wherein the obtaining of the third offset value of the first paging opportunity from the other paging opportunities after the target SSB comprises:

acquiring the total number of paging opportunities in a paging cycle;

6. The method of claim 5, wherein the step of determining the third offset value of the first paging opportunity from other paging opportunities after the target SSB according to the total number of the paging opportunities comprises:

wherein, Offset_nIs a third offset value; offset₂For target week SSBThe number of time slots spaced between two adjacent paging opportunities in the period; m1 is the total number of paging opportunities in one paging cycle; the UE _ ID is a terminal identifier; n is the number of paging opportunities in one SSB period.

7. The method of claim 6, wherein the obtaining the number of slots between two adjacent paging opportunities in the target SSB cycle comprises:

8. The method of claim 2 or 5, wherein the step of obtaining the total number of paging opportunities in a paging cycle comprises:

according to the formula:

acquiring the total number of paging opportunities;

9. The method of claim 8, wherein the number of paging opportunities in an SSB cycle is determined by:

according to the formula:

determine oneThe number of paging opportunities within one SSB period;

10. The method of claim 1, wherein the step of determining the location of the paging opportunity in the paging cycle comprises:

according to the formula:

determining a system frame number of a paging opportunity in a paging cycle;

11. The method of claim 10 wherein the step of determining the location of the paging opportunity in the paging cycle further comprises:

according to the formula:

12. A communication device comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the communication device is a network side device or a terminal; wherein the processor implements the following steps when executing the computer program:

13. The communication device according to claim 12, wherein the processor when executing the computer program performs the steps of:

acquiring the total number of paging opportunities in a paging cycle;

14. The communication device according to claim 13, wherein the processor when executing the computer program performs the steps of:

15. The communication device according to claim 12, wherein the processor when executing the computer program performs the steps of:

16. The communication device according to claim 12, wherein the processor when executing the computer program performs the steps of:

acquiring the total number of paging opportunities in a paging cycle;

17. The communication device according to claim 16, wherein the processor when executing the computer program performs the steps of:

18. The communication device according to claim 17, wherein the processor when executing the computer program performs the steps of:

19. A communication device according to claim 13 or 16, wherein the processor, when executing the computer program, performs the steps of:

according to the formula:

acquiring the total number of paging opportunities;

wherein M1 is oneThe total number of paging opportunities in a paging cycle; n is the number of paging opportunities in an SSB period; t is the length of the paging cycle; SFN_DRX,SSBThe number of radio frames which are the resource position of the radio frame at the beginning of the paging cycle and the interval between the radio frames where the first SSB is positioned later; t is_SSBIs the SSB period length.

20. The communication device according to claim 19, wherein the processor when executing the computer program performs the steps of:

according to the formula:

determining the number of paging opportunities in an SSB period;

21. The communication device according to claim 12, wherein the processor when executing the computer program performs the steps of:

according to the formula:

determining a system frame number of a paging opportunity in a paging cycle;

22. The communication device according to claim 21, wherein the processor when executing the computer program performs the steps of:

according to the formula:

23. A communication device is a network side device or a terminal, and is characterized by comprising:

a determining module, configured to determine, according to the resource location of the target SSB, the second offset value, and the third offset value, a location of a paging opportunity in a paging cycle;

24. The communications device of claim 23, wherein the first acquiring module, when acquiring the first offset value of the target SSB period containing the target SSB in the paging cycle relative to the resource location of the reference radio frame, comprises:

25. The communications device of claim 24, wherein the first determining unit is configured to:

26. The communications device of claim 24, wherein the first acquiring module, when acquiring the second offset value of the slot location where the target SSB and the first paging opportunity after the target SSB are located, comprises:

27. The communications device of claim 24, wherein the first acquiring module, in acquiring the third offset value for the other paging opportunities after the target SSB from the first paging opportunity, comprises:

28. The communications device of claim 27, wherein the second determining unit is configured to:

29. The communications device of claim 28, wherein the number of slots between two adjacent paging opportunities in the target SSB period is obtained by:

30. The communications device of claim 24 or 27, wherein the means for obtaining the total number of paging opportunities in a paging cycle is:

according to the formula:

acquiring the total number of paging opportunities;

31. The communications device of claim 30, wherein the number of paging opportunities in an SSB cycle is determined by:

according to the formula:

determining the number of paging opportunities in an SSB period;

for the time contained in the next radio frame for the value of subcarrier μThe total number of gaps; offset₁Is a second offset value; offset₂The number of time slots between two adjacent paging opportunities in a target SSB period is set; floor () is a floor function.

32. The communications device of claim 23, wherein the determining module is configured to:

according to the formula:

determining a system frame number of a paging opportunity in a paging cycle;

33. The communications device of claim 32, wherein the determining module is further configured to:

according to the formula:

wherein n is_pSFN in radio frame for paging opportunities_PCorresponding start slot coding inNumber; n is_SSB,iNumbering the time slots of the ith SSB; offset₁Is a second offset value; offset_nIs a third offset value;

34. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for location determination of a paging opportunity according to any one of claims 1 to 11.