CN109803373B

CN109803373B - Position determination method of paging opportunity and communication equipment

Info

Publication number: CN109803373B
Application number: CN201711137241.0A
Authority: CN
Inventors: 范江胜; 梁靖
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2017-11-16
Filing date: 2017-11-16
Publication date: 2021-01-22
Anticipated expiration: 2037-11-16
Also published as: CN109803373A

Abstract

The invention discloses a method for determining the position of a paging opportunity and a communication device, wherein the method comprises the following steps: determining a length of a Paging Opportunity (PO); and determining the position of the PO in the discontinuous reception DRX period according to the length of the PO, a pre-configured PO static rule table, the paging frame where the PO is positioned and a calculation method of the PO. The scheme of the invention can avoid overlapping between POs.

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

The UE can use a discontinuous reception mode to save energy consumption in an idle state, a sleep cycle of the terminal is represented by DRX, and the basic value range of the DRX in the LTE system is {320ms, 640ms, 1280ms and 2560ms }. The terminal is associated with a PF (paging frame) in each DRX period, the concept of the paging frame is consistent with that of an LTE radio frame, the association principle of the UE and the PF is shown in a PF calculation formula, one or more (at most four) POs (paging time) exist in each PF, each PO represents the length of a radio subframe, the position of the PO in the PF is 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 and the following table.

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 P-RNTI (temporary network identity) to demodulate a PDCCH (physical downlink shared channel) at the corresponding PO moment, demodulates a corresponding PDSCH according to time-frequency resources indicated in the DCI, transmits Paging Record information in the PDSCH, and determines whether to wake up by searching self ID information (IMSI or S-TMSI) in the Paging Record.

The LTE system includes FDD and TDD modes, and PO definition rules in different modes are as follows:

TABLE 1 FDD PO rules

Ns	POwhen i_s＝0	POwhen i_s＝1	POwhen i_s＝2	POwhen i_s＝3
					1	9	N/A	N/A	N/A
2	4	9	N/A	N/A
					4	0	4	5	9

TABLE 2 TDD PO rules

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

In the table, Ns is the number of POs included in one PF, i _ s is the position index of the PO, each PO occupies only one subframe in the existing LTE system, the position of the PO appearing in the radio frame is relatively fixed, the specific position distribution is shown in tables 1 and 2, and for example, in the FDD system, the PO appears only in the subframes with the numbers of 0, 4, 5, and 9 in each radio frame. Since the high frequency NR system needs to perform the 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 results in that the system cannot normally page most terminals belonging to the two POs, and obviously, this situation cannot occur.

Disclosure of Invention

The embodiment of the invention provides a method for determining the position of a paging opportunity and communication equipment, which can avoid overlapping between POs.

In order to solve the above technical problem, an embodiment of the present invention provides the following technical solutions:

a method of location determination for a paging opportunity, comprising:

determining a length of a Paging Opportunity (PO);

and determining the position of the PO in the discontinuous reception DRX period according to the length of the PO, a pre-configured PO static rule table, the paging frame where the PO is positioned and a calculation method of the PO.

Wherein the step of determining the length of the paging opportunity PO comprises:

the length of the paging opportunity PO is determined according to the length of a subframe included by the PO or the length of a symbol included by the PO.

The calculation method of the paging frame and the PO where the PO is located comprises the following steps:

the calculation formula of the paging frame PF where the PO is located is as follows: SFN mod T ═ T div N (UE _ ID mod N);

position index of PO in static rules table: i _ s ═ floor (UE _ ID/N) mod Ns;

wherein, T represents a discontinuous reception DRX cycle, and N ═ min (T, nB); ns ═ max (1, nB/T); nB {4T,2T, T/2, T/4, T/8, T/16, T/32 }; UE _ ID — IMSI mod 1024.

The pre-configured PO static rule table is configured by rounding up the multiple of the length of one subframe according to the length of the PO.

Wherein, the pre-configured PO static rule table comprises: position index i _ s of PO, the number of PO included in each radio frame and the corresponding relation between the subframe numbers of the subframes where PO is located;

in the PO static rule table, the number of subframe numbers included under one i _ s index is the same as the number of subframes included in the PO.

Wherein the number of subframes included in the PO is greater than or equal to 1.

Wherein the number of subframes included by the PO includes: 1. 2, 3 or 4.

In the DRX period, the position of the special subframe is not overlapped or collided with the position of the PO.

An embodiment of the present invention further provides a communication device, including:

a processor for determining a length of a Paging Opportunity (PO); and determining the position of the PO in the discontinuous reception DRX period according to the length of the PO, a pre-configured PO static rule table, the paging frame where the PO is positioned and the calculation method of the PO.

Wherein, when determining the length of the paging opportunity PO, the processor is specifically configured to: the length of the paging opportunity PO is determined according to the length of a subframe included by the PO or the length of a symbol included by the PO.

position index of PO in static rules table: i _ s ═ floor (UE _ ID/N) mod Ns;

Wherein the number of subframes included by the PO includes: 1. 2, 3 or 4.

The embodiment of the invention also provides a position determining device of the paging opportunity, which comprises the following steps:

a first determining module, configured to determine a length of a paging opportunity PO;

and a second determining module, configured to determine a location of the PO in the DRX cycle according to the length of the PO, a preconfigured PO static rule table, and a paging frame where the PO is located and a calculation method of the PO.

a processor configured to perform the following functions: the method is used for determining the length of the PO of the paging opportunity, and determining the position of the PO in the discontinuous reception DRX period according to the length of the PO, a pre-configured PO static rule table, a paging frame where the PO is located and a calculation method of the PO.

Embodiments of the present invention also provide a computer storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above.

The embodiment of the invention has the beneficial effects that:

in the above embodiment of the present invention, the length of the paging opportunity PO is determined; and determining the position of the PO in the discontinuous reception DRX period according to the length of the PO, a pre-configured PO static rule table, the paging frame where the PO is positioned and a calculation method of the PO. Thereby avoiding overlap of POs in high frequency NR systems.

Drawings

Fig. 1 is a flow chart of a method for determining the location of a paging opportunity according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The invention provides a static PO design method for avoiding overlapping between POs, and the main idea is to improve the existing LTE PO static distribution definition rule to avoid overlapping between POs.

As shown in fig. 1, an embodiment of the present invention provides a method for determining a location of a paging opportunity, including:

step 11, determining the length of the paging opportunity PO;

and step 12, determining the position of the PO in the discontinuous reception DRX period according to the length of the PO, a pre-configured PO static rule table, the paging frame where the PO is positioned and the calculation method of the PO.

In this embodiment, since the high frequency NR system needs to perform the beam scanning process, the length of a PO may be several subframes or multiple symbols, and different PO static rule tables should be configured for different PO lengths.

The length of PO is that the system message broadcasts and notifies the terminal station, the terminal station can use different static tables to look for the PO position that should monitor oneself separately according to different PO length configurations in the system message;

although the length of PO is not necessarily an integer multiple of a subframe length (which may be defined by the length of a symbol), considering that a terminal needs to demodulate a PDCCH (downlink control channel) first to know the time-frequency resource location of a PDSCH (downlink shared channel) during paging, and then match paging information contained in the PDSCH, the PO location static table under different PO lengths is designed based on the fact that the PO length is rounded up by the multiple of the subframe length.

In an embodiment of the present invention, in the step 11, the step of determining the length of the paging opportunity PO includes: the length of the paging opportunity PO is determined according to the length of a subframe included by the PO or the length of a symbol included by the PO.

The value rules of the POs with different actual lengths when designing the PO position static rule table are as follows:

PO length definition rule 1: when the PO length is defined according to the subframe length, the PO length directly meets the requirement, and at the moment, a value taking rule is not additionally defined.

PO length definition rule 2: when defining the PO length according to the symbol length, for example, the system defines that the length of a PO is 10 symbols, since a subframe of the LTE system contains 7 symbols, when considering the static rule table for designing the PO appearance position, the PO length should be processed according to 2 subframes, that is, 10 divided by 7 and rounded up, and other symbol length rules are similar.

In a specific embodiment of the present invention, a method for calculating a paging frame and a PO where the PO is located includes:

position index of PO in static rules table: i _ s ═ floor (UE _ ID/N) mod Ns;

In an embodiment of the present invention, the pre-configured PO static rule table is configured by rounding up the multiple of the length of one subframe according to the length of the PO.

Wherein, the pre-configured PO static rule table comprises: position index i _ s of PO, the number of PO included in each radio frame and the corresponding relation between the subframe numbers of the subframes where PO is located; the details are shown in the following table.

In the embodiment of the invention, in the PO static rule table, the number of subframe numbers included in one i _ s index is the same as the number of subframes included in the PO. The number of subframes included in the PO is greater than or equal to 1. For example, the number of subframes included in the PO includes: 1. 2, 3 or 4.

It should be noted that the calculation formula of the LTE system for PF and PO still continues, but the Ns parameter in the calculation formula of PO location varies according to the length of PO, and as shown in the following table, the design of the PO location static rule under different PO lengths includes:

the PO length conversion is performed regardless of whether the system defines the PO in terms of subframes or symbols, and the following PO lengths are described in terms of subframes, where the length of the PO is represented by w (in units of subframes).

When w is 1, LTE PO rules are still followed for FDD or TDD systems, as detailed in table 1 and table 2 in the background section of the art.

When w is 2, the rule is as follows:

TABLE 3 FDD PO static rules Table when w is 2

Ns	POwhen i_s＝0	POwhen i_s＝1	POwhen i_s＝2	POwhen i_s＝3
					1	8 and 9	N/A	N/A	N/A
2	4 and 5	8 and 9	N/A	N/A
					4	2 and 3	4 and 5	6 and 7	8 and 9

TABLE 4 TDD PO static rules Table when w is 2

Table 3 and table 4 are only implemented by a scheme of static PO occurrence position rules when w is 2, and other static classification implementations are not excluded, and once the static PO occurrence position rules are formulated, the positions of the special subframes broadcasted by the system should exclude possible PO occurrence positions, and both need to be coordinated by the system. At this time, the Ns parameter in the PO position formula can be calculated in 1, 2 or 4.

When w is 3, the rule is as follows:

TABLE 5 FDD PO static rules Table when w is 3

Ns	POwhen i_s＝0	POwhen i_s＝1	POwhen i_s＝2	POwhen i_s＝3
					1	7. 8 and 9	N/A	N/A	N/A
2	4. 5 and 6	7. 8 and 9	N/A	N/A

TABLE 6 TDD PO static rules Table when w is 3

Ns	POwhen i_s＝0	POwhen i_s＝1	POwhen i_s＝2	POwhen i_s＝3
					1	2. 3 and 4	N/A	N/A	N/A
2	2. 3 and 4	5. 6 and 7	N/A	N/A

Tables 5 and 6 are only one implementation of the PO occurrence position static rule scheme when w is 3, other implementations of static classification are not excluded (for example, Ns is equal to 3), and once the PO occurrence position static rule is formulated, the position of the special subframe broadcasted by the system should exclude the possible occurrence position of the PO, and both need the system to coordinate. At this time, the Ns parameter in the PO position calculation formula may take a value of 1 or 2 (a scenario in which the Ns takes a value of 3 is not excluded).

When w is 4, the rule is as follows:

TABLE 7 FDD PO static rules Table when w is 4

Ns	POwhen i_s＝0	POwhen i_s＝1	POwhen i_s＝2	POwhen i_s＝3
					1	6. 7, 8 and 9	N/A	N/A	N/A
2	2. 3, 4 and 5	6. 7, 8 and 9	N/A	N/A

TABLE 8 TDD PO static rules Table when w is 4

Ns	POwhen i_s＝0	POwhen i_s＝1	POwhen i_s＝2	POwhen i_s＝3
					1	1. 2, 3 and 4	N/A	N/A	N/A
2	1. 2, 3 and 4	5. 6, 7 and 8	N/A	N/A

Table 7 and table 8 are only implemented by a scheme of static PO occurrence position rules when w is 4, and other static classification implementations are not excluded, once the static PO occurrence position rules are formulated, positions of special subframes broadcasted by the system should exclude possible PO occurrence positions, and both need the system to coordinate, and at this time, the Ns parameter in the PO location formula can be calculated in 1 or 2.

In the above embodiments of the present invention, in the DRX cycle, the position of the special subframe is not overlapped or collided with the position of the PO. That is, the PO location static table associated with different PO lengths also needs to consider the existence of the special subframe, and since the special subframe location is also reported to the terminal by the network side through the system message, the location of the special subframe allocated by the network side should be adapted to the PO location static table with different PO lengths, that is, regardless of the configuration of the PO lengths, the location where the special subframe appears is always to avoid the subframe where the PO appears.

The above embodiment of the present invention determines the length of the paging opportunity PO; and determining the position of the PO in the discontinuous reception DRX period according to the length of the PO, a pre-configured PO static rule table, the paging frame where the PO is positioned and a calculation method of the PO. Thereby avoiding overlap of POs in high frequency NR systems.

position index of PO in static rules table: i _ s ═ floor (UE _ ID/N) mod Ns;

Wherein the number of subframes included by the PO includes: 1. 2, 3 or 4.

It should be noted that the communication device may be a network device, such as a base station, or a terminal;

if the PO is the network equipment, the network equipment can send the paging message on the PO after determining the position of the PO;

if it is a terminal, the terminal may receive a paging message on the PO after determining the PO location.

The communication device is a communication device corresponding to the above method embodiment, and all implementation manners in the above method embodiment are applicable to the embodiment of the communication device, and the same technical effect can be achieved.

The first determining module is specifically configured to: the length of the paging opportunity PO is determined according to the length of a subframe included by the PO or the length of a symbol included by the PO.

position index of PO in static rules table: i _ s ═ floor (UE _ ID/N) mod Ns;

Wherein the number of subframes included by the PO includes: 1. 2, 3 or 4.

The device is a device corresponding to the method embodiment, and all implementation manners in the method embodiment are applicable to the device embodiment, so that the same technical effect can be achieved.

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

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

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

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

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

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

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

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 location determination of a paging opportunity, comprising:

determining a length of a Paging Opportunity (PO), wherein the length of one PO includes at least two subframes or at least two symbols;

determining the position of the PO in the discontinuous reception DRX period according to the length of the PO, a pre-configured PO static rule table and a calculation method of the paging frame and the PO where the PO is located, wherein the pre-configured PO static rule table is configured by rounding up the multiple of the length of one subframe according to the length of the PO; the pre-configured PO static rules table includes: the position index i _ s of the PO, the number of the PO included in each wireless frame and the corresponding relation between the subframe numbers of the subframes where the PO is located, wherein in the PO static rule table, the number of the subframe numbers included in one i _ s index is the same as the number of the subframes included in the PO.

2. The method of claim 1, wherein the step of determining the length of the Paging Opportunity (PO) comprises:

3. The method of claim 1, wherein the calculation of the PO and the paging frame in which the PO is located comprises:

PO position index i _ s in static rule table floor (UE _ ID/N) mod Ns;

4. The method of claim 1, wherein the PO comprises subframes with a number greater than or equal to 1.

5. The method of claim 4, wherein the number of subframes included in the PO comprises: 1. 2, 3 or 4.

6. The method of claim 1, wherein the position of the special subframe is non-overlapping or non-conflicting with the position of the PO in the DRX cycle.

7. A communication device, comprising:

a processor for determining lengths of paging opportunities POs, wherein a length of a PO includes at least two subframes or at least two symbols; determining the position of the PO in the discontinuous reception DRX period according to the length of the PO, a pre-configured PO static rule table and a calculation method of the paging frame and the PO where the PO is located, wherein the pre-configured PO static rule table is configured by rounding up the multiple of the length of one subframe according to the length of the PO; the pre-configured PO static rules table includes: the position index i _ s of the PO, the number of the PO included in each wireless frame and the corresponding relation between the subframe numbers of the subframes where the PO is located, wherein in the PO static rule table, the number of the subframe numbers included in one i _ s index is the same as the number of the subframes included in the PO.

8. The communications device of claim 7, wherein the processor, when determining the length of the Paging Opportunity (PO), is specifically configured to: the length of the paging opportunity PO is determined according to the length of a subframe included by the PO or the length of a symbol included by the PO.

9. The communication device of claim 7, wherein the calculation method of the paging frame and the PO in which the PO is located comprises:

PO position index i _ s in static rule table floor (UE _ ID/N) mod Ns;

10. The communications device of claim 7, wherein the PO comprises a number of subframes greater than or equal to 1.

11. The communications device of claim 10, wherein the number of subframes included by the PO comprises: 1. 2, 3 or 4.

12. The communications device of claim 7, wherein the position of the special subframe is non-overlapping or non-conflicting with the position of the PO in the DRX cycle.

13. A location determination device for a paging opportunity, comprising:

a first determining module, configured to determine lengths of paging opportunities POs, where a length of a PO includes at least two subframes or at least two symbols;

a second determining module, configured to determine a position of the PO in the DRX cycle according to the length of the PO, a preconfigured PO static rule table, and a paging frame in which the PO is located and a calculation method of the PO, where the preconfigured PO static rule table is configured by rounding up a multiple of a subframe length according to the length of the PO; the pre-configured PO static rules table includes: the position index i _ s of the PO, the number of the PO included in each wireless frame and the corresponding relation between the subframe numbers of the subframes where the PO is located, wherein in the PO static rule table, the number of the subframe numbers included in one i _ s index is the same as the number of the subframes included in the PO.

14. A communication device, comprising:

a processor configured to perform the following functions: determining the length of a Paging Opportunity (PO), wherein the length of a PO comprises at least two subframes or at least two symbols, and determining the position of the PO in a Discontinuous Reception (DRX) cycle according to the length of the PO, a pre-configured PO static rule table and a calculation method of a paging frame and the PO where the PO is located, wherein the pre-configured PO static rule table is configured by rounding up the multiple of the length of one subframe according to the length of the PO; the pre-configured PO static rules table includes: the position index i _ s of the PO, the number of the PO included in each wireless frame and the corresponding relation between the subframe numbers of the subframes where the PO is located, wherein in the PO static rule table, the number of the subframe numbers included in one i _ s index is the same as the number of the subframes included in the PO.

15. A computer storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-6.