CN108432317B

CN108432317B - Paging message transmission method, first equipment and second equipment

Info

Publication number: CN108432317B
Application number: CN201680076885.0A
Authority: CN
Inventors: 刘蕾; 于映辉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-06-17
Filing date: 2016-06-17
Publication date: 2020-11-17
Anticipated expiration: 2036-06-17
Also published as: CN108432317A; WO2017214967A1

Abstract

A paging message transmission method, a first device and a second device are used for realizing paging message transmission between a base station and a terminal device based on NB-IoT after physical layer change, when the first device is the base station, the second device is the terminal device, and when the first device is the terminal device, the second device is the base station. The method comprises the following steps: the method comprises the steps that first equipment acquires a first period, first information and an identifier of terminal equipment, wherein the first period is the period of a Physical Downlink Control Channel (PDCCH) search space, the first information comprises information of a starting frame and information of a starting subframe of the PDCCH search space, and the PDCCH search space is used for the terminal equipment to monitor paging messages sent by a PDCCH receiving base station in the PDCCH search space; the first equipment determines a paging occasion according to the first period, the first information and the identification of the terminal equipment; and transmitting the paging message between the first equipment and the second equipment on the paging occasion.

Description

Paging message transmission method, first equipment and second equipment

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a paging message transmission method, a first device, and a second device.

Background

The narrowband Internet of Things (NB-IoT) based on the honeycomb is an important branch in the technology of the Internet of Things (IoT), the service of the NB-IoT has the characteristics of low speed and long period, the NB-IoT supports connection of massive terminal equipment, and the NB-IoT requires low cost and low power consumption of the terminal equipment connected with the NB-IoT.

At present, before the physical layer of the NB-IoT is changed, the NB-IoT implements paging message transmission between the base station and the terminal device by the same method as in the Long Term Evolution (LTE) system. In an LTE system, a terminal device may receive a paging message discontinuously in an idle state to achieve the purpose of saving power consumption, a base station and the terminal device determine a paging occasion for sending the paging message by using the same method, that is, a frame and a subframe where the paging occasion is located are determined according to a period of Discontinuous Reception (DRX) of the terminal device and an identifier of the terminal device, the base station sends the paging message at the determined paging occasion, and the terminal device monitors a Physical Downlink Control Channel (PDCCH) at the determined paging occasion to receive the paging message.

NB-IoT to support deep coverage, the frame and subframe where the starting position of the PDCCH search space for paging in the physical layer of NB-IoT is changed compared to the LTE system. If the method for transmitting the paging message in the existing LTE system is still continuously used after the physical layer of the NB-IoT is changed, the method cannot be well adapted to the change of the NB-IoT physical layer, and the terminal equipment cannot acquire an effective paging occasion at one time with a high probability, so that the complexity and the power consumption of the terminal equipment are increased.

Disclosure of Invention

The invention provides a paging message transmission method, first equipment and second equipment, which are used for realizing paging message transmission between a base station and terminal equipment based on NB-IoT after a physical layer is changed.

It should be particularly noted that, in the embodiment of the present invention, when the first device is a network device (e.g., a base station), the second device may be a terminal device; or when the first device is a terminal device, the second device may be a network device (e.g., a base station).

In one aspect, a method for transmitting a paging message provided by the present invention includes:

the method comprises the steps that first equipment acquires a first period, first information and an identifier of terminal equipment, wherein the first period is the period of a Physical Downlink Control Channel (PDCCH) search space, the first information comprises information of a starting frame and information of a starting subframe of the PDCCH search space, and the PDCCH search space is used for monitoring a paging message sent by a PDCCH receiving base station in the PDCCH search space by the terminal equipment;

the first equipment determines a paging occasion according to the first cycle, the first information and the identifier of the terminal equipment;

and transmitting a paging message between the first equipment and the second equipment at the paging occasion.

In this way, the period (i.e., the first period) of the PDCCH search space for paging, information of the start frame and information of the start subframe (i.e., the first information) of the PDCCH search space for paging are added to the determination process of the paging occasion for transmitting the paging message to accommodate the NB-IoT after the physical layer change. The second device determines the paging occasion by the same method as the first device, and further realizes that the paging message transmission is carried out between the first device and the second device at the paging occasion, namely, the base station sends the paging message to the terminal device at the determined paging occasion, and the terminal device receives the paging message sent by the base station at the determined paging occasion.

In a possible implementation manner, the determining, by the first device, a paging occasion according to the first cycle, the first information, and an identifier of the terminal device includes:

the first device determines a frame where the paging occasion is located according to the first period, the identifier of the terminal device and information of a starting frame of the search space of the PDCCH in the first information;

in the frame where the paging occasion is located, the first device determines the subframe where the paging occasion is located according to the information of the starting subframe of the PDCCH search space in the first information.

It should be noted that this method needs to be executed under the condition that a second period is less than or equal to the first set value, where the second period refers to a period in which the terminal device does not continuously receive the paging message.

In a possible implementation manner, the determining, by the first device, a frame where the paging occasion is located according to the first period, the identifier of the terminal device, and information of a starting frame of the search space of the PDCCH includes:

the first device determines a frame where the paging occasion is located according to the following formula:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

wherein SFN indicates that the paging occasion is locatedFrame, CSS_{_period}Indicating the first period, UE _ ID indicating the identity of the terminal device, N indicating a non-negative integer, frame _ offset indicating an offset amount of a start frame in information of the start frame of the search space of the PDCCH, Ns 1024/CSS _ period.

In one possible implementation, the method further includes:

the first equipment acquires a second period, wherein the second period is a period for the terminal equipment to discontinuously receive the paging message;

the first device determines a paging occasion according to the first cycle, the first information and the identifier of the terminal device, including:

and the first equipment determines a paging occasion according to the first period, the first information, the identifier of the terminal equipment and the second period.

In a possible implementation manner, when the second period is greater than a first set value, the determining, by the first device, a paging occasion according to the first period, the first information, the identifier of the terminal device, and the second period includes:

the first equipment determines at least one superframe where the paging occasion is located according to the identifier of the terminal equipment and the second period;

performing the following for each of the at least one superframe:

the first device determines a starting frame of a paging window in the superframe according to the first period, the identifier of the terminal device and the information of the starting frame of the search space of the PDCCH in the first information;

the first equipment determines an ending frame of the paging window in the superframe according to the starting frame of the paging window and the length of the paging window;

between the starting frame of the paging window and the ending frame of the paging window, the first device determines a frame where the paging occasion is located according to the first period, the identifier of the terminal device and the information of the starting frame of the search space of the PDCCH in the first information;

In a possible implementation manner, the determining, by the first device, a start frame of a paging window in the super-frame according to the first period, the identifier of the terminal device, and information of the start frame of the search space of the PDCCH in the first information includes:

the first device determines a start frame of the paging window according to the following formula:

PW_start＝CSS__period*i_eDRX+frame_offset

wherein PW _ start represents a start frame of the paging window, CSS __periodRepresents the first period, frame _ offset represents an offset amount of a start frame in information of the start frame of the search space of the PDCCH, i_eDRX＝UE_ID mod(1024/CSS__period) And UE _ ID represents the identity of the terminal equipment.

In one possible implementation manner, when the information of the start frame of the search space of the PDCCH includes offsets of a plurality of start frames, the determining, by the first device, the frame _ offset includes:

the first device determines i _ s according to the formula i _ s floor (UE _ ID/N) mod Ns; wherein, the UE _ ID represents the identification of the terminal equipment, N represents a non-negative integer, and Ns represents the number of the offset of the initial frame in the information of the initial frame of the search space of the PDCCH;

and the first equipment determines the frame _ offset according to the determined i _ s and the preset corresponding relation between the i _ s and the frame _ offset.

In a possible implementation manner, the determining, by the first device, a frame where the paging occasion is located according to the first period, the identifier of the terminal device, and information of a starting frame of the search space of the PDCCH in the first information includes:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)

wherein SFN represents the frame where the paging occasion is located, CSS_{_period}Indicating the first period, UE _ ID indicating the identity of the terminal device, N being a non-negative integer, Ns indicating the number of offsets of the start frame in the information of the start frame of the search space of the PDCCH.

In one possible implementation manner, when the second period is greater than a first set value and the first period is less than or equal to a second set value, the determining, by the first device, a paging occasion according to the first period, the first information, the identifier of the terminal device, and the second period includes:

performing the following for each of the at least one superframe:

the first equipment determines the starting frame of the paging window in the superframe according to the second set value and the identifier of the terminal equipment;

the first device divides the paging window into at least one window with the length being the second set value between the starting frame of the paging window and the ending frame of the paging window, and in each window of the at least one window, the frame where the paging occasion is located is determined according to the first period, the identifier of the terminal device and the information of the starting frame of the PDCCH search space in the first information;

In a possible implementation manner, the first device determines, according to the identifier of the terminal device and the second period, at least one superframe in which the paging occasion is located, including;

the first device determines at least one superframe in which the paging occasion is located according to the following formula:

H-SFN mod T_eDRX,H＝(UE_ID mod T_eDRX,H)

wherein H-SFN represents at least one superframe in which the paging occasion is located, T_eDRX,HIndicating the second periodicity, and UE _ ID indicating the identity of the terminal device.

In a possible implementation manner, the determining, by the first device, a starting frame of the paging window in the superframe according to the second setting value and the identifier of the terminal device includes:

SFN＝A*[floor(UE_ID/N)mod 4]

wherein, SFN represents the start frame of the paging window, a represents the second setting value, UE _ ID represents the identifier of the terminal device, and N represents a non-negative integer.

In a possible implementation manner, the determining, by the first device, an end frame of the paging window in the superframe according to a start frame of the paging window and a length of the paging window includes:

the first device determines an end frame of the paging window according to the following formula:

PW_end＝(PW_start+L*100-1)mod 1024

wherein PW _ end represents an end frame of the paging window, PW _ start represents a start frame of the paging window, and L represents a length of the paging window.

In a possible implementation manner, the first device determines, according to the first period, the identifier of the terminal device, and information of a starting frame of the PDCCH search space in the first information, a frame where the paging occasion is located, including;

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

wherein SFN represents the frame where the paging occasion is located, CSS_{_period}Indicating the first period, UE _ ID indicating the identity of the terminal device, N indicating a non-negative integer, frame _ offset indicating an offset of a start frame in the information of the start frame of the PDCCH search space, and Ns ═ max CSS _ period)/CSS _ period, where max CSS _ period indicates a period of a maximum PDCCH search space supported by the system.

In a possible implementation manner, the determining, by the first device, the subframe where the paging occasion is located according to the information of the starting subframe of the PDCCH search space in the first information includes:

if the information of the initial subframe of the PDCCH search space only comprises the offset of one initial subframe, the first equipment takes the offset of the initial subframe as the subframe where the paging occasion is located;

if the information of the starting subframe of the PDCCH search space includes offsets of a plurality of starting subframes, the first device determines i _ s according to a formula i _ s-floor (UE _ ID/N) mod Ns, and determines a subframe where the paging occasion is located according to the determined i _ s and a preset correspondence between i _ s and the subframe:

wherein, the UE _ ID represents an identifier of the terminal device, N represents a non-negative integer, and Ns represents the number of offsets of a starting subframe in information of the starting subframe of the search space of the PDCCH.

In another aspect, a first device provided in an embodiment of the present invention includes:

the processing unit is used for acquiring a first period, first information and an identifier of terminal equipment, wherein the first period is a period of a Physical Downlink Control Channel (PDCCH) search space, the first information comprises information of a starting frame and information of a starting subframe of the PDCCH search space, and the PDCCH search space is used for the terminal equipment to monitor a paging message sent by a PDCCH receiving base station in the PDCCH search space;

the processing unit is configured to determine a paging occasion according to the first cycle, the first information, and an identifier of the terminal device;

and the receiving and sending unit is used for transmitting the paging message with the second equipment at the paging occasion determined by the processing unit.

In a possible implementation manner, the processing unit is specifically configured to:

determining a frame where the paging occasion is located according to the first period, the identifier of the terminal equipment and information of a starting frame of the search space of the PDCCH in the first information;

and in the frame where the paging occasion is located, determining the subframe where the paging occasion is located according to the information of the initial subframe of the PDCCH search space in the first information.

In a possible implementation manner, when the processing unit determines, according to the first period, the identifier of the terminal device, and the information of the starting frame of the search space of the PDCCH, a frame in which the paging occasion is located, the processing unit is specifically configured to:

determining a frame where the paging occasion is located according to the following formula:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

wherein SFN represents the frame where the paging occasion is located, CSS_{_period}Indicating the first period, UE _ ID indicating the identity of the terminal device, N indicating a non-negative integer, frame _ offset indicating an offset amount of a start frame in information of the start frame of the search space of the PDCCH, Ns 1024/CSS _ period.

In one possible implementation, the processing unit is further configured to:

acquiring a second period, wherein the second period is a period for the terminal equipment to discontinuously receive the paging message;

the processing unit is specifically configured to:

and determining a paging occasion according to the first period, the first information, the identifier of the terminal equipment and the second period.

In a possible implementation manner, when the processing unit determines the paging occasion according to the first cycle, the first information, the identifier of the terminal device, and the second cycle, the processing unit is specifically configured to:

when the second period is larger than a first set value, determining at least one superframe where the paging occasion is located according to the identifier of the terminal equipment and the second period;

performing the following for each of the at least one superframe:

determining a starting frame of a paging window in the superframe according to the first period, the identifier of the terminal equipment and the information of the starting frame of the search space of the PDCCH in the first information;

determining an ending frame of the paging window in the superframe according to the starting frame of the paging window and the length of the paging window;

determining a frame where the paging occasion is located according to the first period, the identifier of the terminal device and information of the initial frame of the search space of the PDCCH in the first information between the initial frame of the paging window and the end frame of the paging window;

In a possible implementation manner, when the processing unit determines, according to the first period, the identifier of the terminal device, and the information of the start frame of the search space of the PDCCH in the first information, the start frame of the paging window in the super-frame is specifically configured to:

determining a starting frame of the paging window according to the following formula:

PW_start＝CSS__period*i_eDRX+frame_offset

In a possible implementation manner, when the processing unit determines the frame _ offset, the method specifically includes:

when the information of the initial frame of the search space of the PDCCH includes offsets of a plurality of initial frames, determining i _ s according to a formula i _ s-floor (UE _ ID/N) mod Ns; wherein, the UE _ ID represents the identification of the terminal equipment, N represents a non-negative integer, and Ns represents the number of the offset of the initial frame in the information of the initial frame of the search space of the PDCCH;

and determining the frame _ offset according to the determined i _ s and the preset corresponding relation between the i _ s and the frame _ offset.

In a possible implementation manner, when the processing unit determines, according to the first cycle, the identifier of the terminal device, and the information of the starting frame of the search space of the PDCCH in the first information, a frame where the paging occasion is located, the processing unit is specifically configured to:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)

when the second period is greater than a first set value and the first period is less than or equal to a second set value, determining at least one superframe where the paging occasion is located according to the identifier of the terminal equipment and the second period;

performing the following for each of the at least one superframe:

determining a starting frame of a paging window in the superframe according to the second set value and the identifier of the terminal equipment;

dividing the paging window into at least one window with the length being the second set value between the starting frame of the paging window and the ending frame of the paging window, and determining a frame where the paging occasion is located in each window of the at least one window according to the first period, the identifier of the terminal device and the information of the starting frame of the PDCCH search space in the first information;

In a possible implementation manner, the processing unit is specifically configured to determine, according to the identifier of the terminal device and the second period, at least one superframe in which the paging occasion is located;

determining at least one superframe in which the paging occasion is located according to the following formula:

H-SFN mod T_eDRX,H＝(UE_ID mod T_eDRX,H)

In a possible implementation manner, when the processing unit determines, according to the second setting value and the identifier of the terminal device, a starting frame of the paging window in the superframe, the processing unit is specifically configured to:

SFN＝A*[floor(UE_ID/N)mod 4]

In a possible implementation manner, when the processing unit determines, according to the start frame of the paging window and the length of the paging window, an end frame of the paging window in the super frame, the processing unit is specifically configured to:

determining an end frame of the paging window according to the following formula:

PW_end＝(PW_start+L*100-1)mod 1024

In a possible implementation manner, the processing unit is specifically configured to determine, according to the first period, the identifier of the terminal device, and information of a starting frame of the PDCCH search space in the first information, a frame where the paging occasion is located;

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

In a possible implementation manner, when the processing unit determines, according to the information of the starting subframe of the PDCCH search space in the first information, the subframe where the paging occasion is located, the processing unit is specifically configured to:

if the information of the initial subframe of the PDCCH search space only comprises the offset of one initial subframe, taking the offset of the initial subframe as the subframe where the paging occasion is located;

if the information of the starting subframe of the PDCCH search space includes offsets of a plurality of starting subframes, determining i _ s according to a formula i _ s-floor (UE _ ID/N) mod Ns, and determining a subframe where the paging occasion is located according to the determined i _ s and a preset corresponding relationship between i _ s and the subframe:

In another aspect, a second device provided in the embodiment of the present invention includes:

and the receiving and sending unit is used for transmitting the paging message with the first equipment at the paging occasion determined by the processing unit.

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

wherein SFN represents the frame where the paging occasion is located, CSS_{_period}Representing said first period, UE _ ID representing an identity of said terminal device, N representing a non-negative integerFrame _ offset represents an offset amount of a start frame in information of the start frame of the search space of the PDCCH, and Ns is 1024/CSS _ period.

In one possible implementation, the processing unit is further configured to:

the processing unit is specifically configured to:

performing the following for each of the at least one superframe:

PW_start＝CSS__period*i_eDRX+frame_offset

In a possible implementation manner, the determining, by the processing unit, the frame _ offset specifically includes:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)

performing the following for each of the at least one superframe:

H-SFN mod T_eDRX,H＝(UE_ID mod T_eDRX,H)

wherein H-SFN represents at least one superframe in which the paging occasion is located, T_eDRX,HRepresenting the second period, UE _ ID representing the identity of the terminal device。

SFN＝A*[floor(UE_ID/N)mod 4]

PW_end＝(PW_start+L*100-1)mod 1024

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

In the paging message transmission method, the first device, and the second device provided in the embodiments of the present invention, a period (i.e., a first period) of a PDCCH search space for paging, information of a starting frame and information of a starting subframe (i.e., first information) of the PDCCH search space for paging are added to a determination process of a paging occasion for transmitting a paging message, so as to adapt to NB-IoT after a physical layer is changed. The base station and the terminal device both adopt the technical scheme provided by the embodiment to determine the same paging occasion, the base station sends a paging message to the terminal device at the determined paging occasion, and the terminal device receives the paging message sent by the base station at the determined paging occasion. The terminal equipment monitors the PDCCH in a discontinuous message receiving mode in an idle state so as to receive the paging message sent by the base station, and the effect of saving the power consumption of the terminal equipment is achieved.

Drawings

Fig. 1 is a schematic diagram of an NB-IoT network connection provided in an embodiment of the present invention;

fig. 2 is a flowchart illustrating a first paging message transmission method according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a second paging message transmission method according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating a third paging message transmission method according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating a fourth paging message transmission method according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another first apparatus according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a second apparatus according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of another second apparatus according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminal device according to the embodiments of the present invention may be a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. Wireless terminal devices, which may be mobile terminal devices such as mobile telephones (or "cellular" telephones) and computers having mobile terminal devices, for example, portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (RAN). For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. A wireless Terminal Device may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal Device (Remote Terminal), an Access Terminal Device (Access Terminal), a User Terminal Device (User Terminal), a User Agent (User Agent), a User Device (User Device), or a User Equipment (User Equipment).

The paging message transmission method, the first device and the second device provided by the embodiment of the invention include, but are not limited to, NB-IoT after the physical layer is changed. The 3GPP standard is based on a cellular network, and by designing a new air interface and fully utilizing the characteristics of a narrowband technology, bears Internet of Things (IoT) services, which is called NB-IoT. As shown in fig. 1, a network connection diagram of NB-IoT is shown, where the NB-IoT includes a base station and a terminal device (the device except the base station in fig. 1 is a terminal device), and the base station and the terminal device are connected to each other, the base station and the base station, and the terminal device. Compared with the traditional cellular network, the service of the NB-IoT has the characteristics of low rate and long period, the NB-IoT supports the connection of massive terminal equipment, and the NB-IoT requires the terminal equipment connected with the NB-IoT to have low cost and low power consumption.

The PDCCH search space for paging is fixed to 0, 4, 5, and 9 at the subframe number of the starting subframe of each frame before the physical layer of NB-IoT changes. In order to support deep coverage by NB-IoT, frames and subframes where starting positions of PDCCH search spaces for paging in a physical layer of NB-IoT are located are changed, the PDCCH search spaces for paging in the physical layer of NB-IoT appear from a frame with a sequence number of 0, the period can be flexibly configured according to the situation of coverage grades supported by NB-IoT, the starting frames of the PDCCH search spaces for paging can be flexibly configured into one or more frames, and the starting subframes of the PDCCH search spaces for paging in the starting frames can be flexibly configured into one or more frames. For example, table one below is a configuration case of a period in which a PDCCH search space for paging occurs, and table two is a configuration case of a starting frame and a starting subframe of the PDCCH search space for paging.

Watch 1

Watch two

Index (Index)	0	1	2	3
					(Start frame, Start subframe)	(0，0)	(0，5)	(1，0)	(1，5)
Index (Index)	4	5	6	7
					(Start frame, Start subframe)	(2，0)	(2，5)	(3，0)	(3,5)
Index (Index)	8	9	10	11
					(Start frame, Start subframe)	(4，0)	(4，5)	(6，0)	(6，5)
Index (Index)	12	13	14	15
					(Start frame, Start subframe)	(8，0)	(8，5)	(12，0)	(12，5)
Index (Index)	16	17	18	19
					(Start frame, Start subframe)	(16，0)	(16，5)	(24，0)	(24，5)
Index (Index)	20	21	22	23
					(Start frame, Start subframe)	(32，0)	(32，5)	(48，0)	(48，5)
Index (Index)	24	25	26	27
					(Start frame, Start subframe)	(64，0)	(64，5)	(96，0)	(96，5)
Index (Index)	28	29	30	31
					(Start frame, Start subframe)	(128，0)	(128，5)	(192，0)	(192，5)

If the paging transmission method in the existing LTE system is still used for the NB-IoT after the physical layer change, the terminal device cannot acquire an effective paging occasion for transmitting the paging message at one time with a high probability, that is, cannot effectively find a suitable starting subframe position. In the paging message transmission method, the first device, and the second device provided in the embodiments of the present invention, the period of the PDCCH search space for paging, the information of the start frame and the information of the start subframe of the PDCCH search space for paging are added to the determination process of the paging occasion for transmitting the paging message, so as to adapt to NB-IoT after the physical layer is changed. The method, the first device and the second device are based on the same inventive concept, and because the principles of solving the problems of the method, the first device and the second device are similar, the implementation of the first device, the second device and the method can be referred to each other, and repeated parts are not described again.

The following describes a method and an apparatus for determining a paging occasion according to an embodiment of the present invention in detail. It should be noted that the display sequence of the embodiment of the present invention only represents the sequence of the embodiment, and does not represent the merits of the technical solutions provided by the embodiments.

Example one

As shown in fig. 2, an embodiment of the present invention provides a paging message transmission method, including:

s201, a first device acquires a first period, first information and an identifier of a terminal device, wherein the first period is a period of a Physical Downlink Control Channel (PDCCH) search space, the first information comprises information of a starting frame and information of a starting subframe of the PDCCH search space, and the PDCCH search space is used for the terminal device to monitor a paging message sent by a PDCCH receiving base station in the PDCCH search space.

The first period and the first information may be flexibly configured by the network, for example, the first period and the second information may adopt the configurations shown in table one and table two above, respectively. The identifier of the terminal device is obtained by calculating an international mobile Subscriber identity Number (IMSI) module 1024, and the IMSI is a mark for distinguishing a mobile Subscriber.

S202, the first equipment determines a paging occasion according to the first period, the first information and the identification of the terminal equipment.

S203, transmitting the paging message between the first equipment and the second equipment at the paging occasion.

Herein, the Paging Occasion (PO) refers to a Paging time, i.e., a frame (frame) and a subframe (subframe) where the Paging Occasion is located.

In one example, the method shown in fig. 2 further comprises:

the first device obtains a second period, where the second period refers to a period for which the terminal device receives a Discontinuous Reception (DRX) paging message.

When the second period is greater than the first set value, the method for the first device to determine the paging occasion according to the first period, the first information and the identifier of the terminal device in S202 includes:

the first equipment determines the paging occasion according to the first period, the first information, the identifier of the terminal equipment and the second period.

The first setting value may be set to an even multiple of 2.56 seconds, such as 5.12 seconds, 10.24 seconds, 20.48 seconds, etc., and a DRX cycle of more than 5.12 seconds (i.e., 512 wireless frames) is generally referred to as an extended Discontinuous Reception (eDRX) cycle.

Fig. 3 shows a method for determining a paging occasion by a first device according to a first cycle, first information, an identifier of a terminal device, and a second cycle, which is specifically as follows:

s301, the first device determines at least one superframe where the paging occasion is located according to the identifier of the terminal device and the second period.

For example, the first device may determine at least one superframe in which the paging occasion is located according to the following formula 1:

H-SFN mod T_eDRX,H＝(UE_ID mod T_eDRX,H) Equation 1

In the above formula 1, H-SFN represents at least one superframe where a paging occasion is located, T_eDRX,HIndicating the second period, UE _ ID indicating the identity of the terminal device, mod indicating the modulo operation, i.e., a mod B indicating the remainder of a divided by B.

Further, for each superframe of the at least one superframe, determining a paging occasion in each superframe of the at least one superframe by:

s302, the first device determines a starting frame of a paging window in the super frame according to the first period, the identifier of the terminal device and the information of the starting frame of the search space of the PDCCH in the first information.

The starting frame of the paging window refers to a frame where the starting position of the paging window is located.

The first device determines a start frame of a paging window in the superframe according to the following equation 2:

PW_start＝CSS__period*i_eDRX+ frame _ offset equation 2

In the above formula 2, PW _ start represents a start frame of a paging window in the super frame, CSS __periodIndicates a first period, frame _ offset indicates an offset amount of a start frame in information of the start frame of a search space of PDCCH, i_eDRX＝UE_ID mod(1024/CSS__period) And UE _ ID represents the identity of the terminal device.

If the information of the starting frame of the search space of the PDCCH includes offsets of a plurality of starting frames, the first device determines i _ s according to the following formula 3, and determines frame _ offset in formula 2 according to the i _ s determined by the formula 3 and a preset corresponding relationship between i _ s and frame _ offset;

i _ s ═ floor (UE _ ID/N) mod Ns equation 3

In the above formula 3, UE _ ID represents the identity of the terminal device, N represents a non-negative integer, Ns represents the number of offsets of the starting frame in the information of the starting frame of the search space of PDCCH, and floor (a) represents the largest integer not greater than a.

Taking the offset values of a plurality of start frames included in the information of the start frame of the search space of the PDCCH as 0, 1, 4, and 5 as examples, the preset correspondence relationship between i _ s and frame _ offset can be as shown in table three, and in the case of Ns being known, frame _ offset corresponding to i _ s can be determined by looking up table three, and then PW _ start is obtained by substituting the determined frame _ offset into formula 2.

Watch III

And S303, the first equipment determines the ending frame of the paging window in the superframe according to the starting frame of the paging window and the length of the paging window.

The end frame of the paging window refers to a frame at which the end position of the paging window is located.

The first device determines an end frame of the paging window in the superframe according to the following equation 4:

PW _ end ═ (PW _ start + L100 "1) mod 1024 equation 4

In the above equation 4, PW _ end represents an end frame of a paging window in the super-frame, PW _ start represents a start frame of the paging window in the super-frame, L represents a length of the paging window, and L may be configured by a higher layer and has a unit of second. The paging window appears periodically, and the terminal equipment monitors the paging message sent by the base station in the paging window.

S304, between the initial frame of the paging window and the end frame of the paging window, the first device determines the frame where the paging occasion is located according to the first period, the identifier of the terminal device and the information of the initial frame of the search space of the PDCCH in the first information.

The first device determines a frame where the paging occasion is according to the following formula 5:

SFN＝CSS_{_period}floor (UE _ ID/N) mod Ns) formula 5

In the above equation 5, SFN indicates the frame where the paging occasion is located, CSS_{_period}Indicating a first period, UE _ ID indicating the identity of the terminal deviceN is a non-negative integer, and Ns represents the number of offsets of the start frame in the information of the start frame of the search space of the PDCCH.

S305, in the frame where the paging occasion is located, the first device determines the subframe where the paging occasion is located according to the information of the initial subframe of the PDCCH search space in the first information.

The offset of the starting subframe in the information of the starting subframe of the PDCCH search space may be configured to be one or more of:

if the information of the starting subframe of the PDCCH search space includes offsets of a plurality of starting subframes, the first device determines i _ s according to the following formula 6, and determines a subframe where a paging occasion is located according to the i _ s determined by the formula 6 and a preset correspondence between the i _ s and the subframe:

equation 6 for i _ s ═ floor (UE _ ID/N) mod Ns

In the above equation 6, UE _ ID represents the identity of the terminal device, N represents a non-negative integer, and Ns represents the number of offsets of the starting subframe in the information of the starting subframe of the search space of the PDCCH.

Taking the offsets of a plurality of initial subframes included in the information of the initial subframe of the search space of the PDCCH as 0, 1, 4, and 5 as examples, the preset correspondence relationship between i _ s and subframes can be shown in table four, and under the condition of known Ns, the subframe corresponding to i _ s, which is the subframe where the paging occasion is located, can be determined by looking up table four.

Watch four

In another example, the method shown in fig. 2 further comprises:

the first device acquires a second cycle, which refers to the DRX cycle of the terminal device.

When the second period is greater than the first set value and the first period is less than or equal to the second set value, the method for the first device to determine the paging occasion according to the first period, the first information and the identifier of the terminal device in S202 includes:

The first set point may be set to an even multiple of 2.56 seconds, such as 5.12 seconds, 10.24 seconds, 20.48 seconds, etc.; the second set point may be set to 2.56 seconds or an even multiple of 2.56 seconds, such as 2.56 seconds, 5.12 seconds, 10.24 seconds, 20.48 seconds, etc.; the first set value is greater than the second set value.

Fig. 4 shows a method for determining a paging occasion by a first device according to a first cycle, first information, an identifier of a terminal device, and a second cycle, which is specifically as follows:

s401, the first equipment determines at least one superframe where the paging occasion is located according to the identification of the terminal equipment and the second period.

The first device determines at least one superframe in which the paging occasion is located according to the following formula 7:

H-SFN mod T_eDRX,H＝(UE_ID mod T_eDRX,H) Equation 7

In the above equation 7, the H-SFN represents at least one superframe where the paging occasion is located, T_eDRX,HIndicating the second periodicity, and UE _ ID indicating the identity of the terminal device.

The method of the first device determining at least one superframe in S401 is the same as the method of the first device determining at least one superframe in S301 above.

Performing, for each superframe of at least one superframe, the following by determining a paging occasion in each superframe of the at least one superframe:

s402, the first device determines the starting frame of the paging window in the superframe according to the second set value and the identification of the terminal device.

The first device determines a start frame of a paging window according to the following equation 8:

SFN ═ a [ floor (UE _ ID/N) mod 4] formula 8

In the above equation 8, SFN represents a start frame of the paging window, a represents a second setting value, UE _ ID represents an identifier of the terminal device, and N represents a non-negative integer.

S403, the first device determines the ending frame of the paging window in the superframe according to the starting frame of the paging window and the length of the paging window.

The first device determines the end frame of the paging window in the superframe according to the following equation 9:

PW _ end ═ (PW _ start + L100 "1) mod 1024 equation 9

In the above equation 9, PW _ end denotes an end frame of the paging window in the super frame, PW _ start denotes a start frame of the paging window in the super frame, and L denotes a length of the paging window.

The method of the first device determining the end frame of the paging window in S403 is the same as the method of the first device determining the end frame of the paging window in S303 above.

S404, between the starting frame of the paging window and the ending frame of the paging window, the first device divides the paging window into at least one window with the length being a second set value, and in each window of the at least one window, the first device determines the frame where the paging occasion is located according to the first period, the identifier of the terminal device and the information of the starting frame of the PDCCH search space in the first information.

The first device determines the frame where the paging occasion is according to the following equation 10:

SFN＝CSS_{_period}(floor (UE _ ID/N) mod Ns) + frame _ offset equation 10

In the above equation 10, SFN indicates the frame where the paging occasion is located, CSS_{_period}Indicating a first period, UE _ ID indicating the identity of the terminal device, N indicating a non-negative integer, frame _ offset indicating the offset of the starting frame in the information of the starting frame of the PDCCH search space, Ns ═ max CSS _ period)/CSS _ period, where max CSS _ period indicates the period of the largest PDCCH search space supported by the system.

S405, in the frame where the paging occasion is located, the first device determines the subframe where the paging occasion is located according to the information of the initial subframe of the PDCCH search space in the first information.

if the information of the starting subframe of the PDCCH search space includes offsets of a plurality of starting subframes, the first device determines i _ s according to the following formula 11, and then determines a subframe where a paging occasion is located according to the i _ s determined by the formula 11 and a preset corresponding relationship between i _ s and the subframe:

equation 11 for i _ s ═ floor (UE _ ID/N) mod Ns

In the above equation 11, UE _ ID represents an identity of a terminal device, N represents a non-negative integer, and Ns represents the number of offsets of a starting subframe in information of the starting subframe of a search space of a PDCCH.

The preset corresponding relationship between i _ s and the subframe may refer to table four above, and is not described herein again.

The method for the first device to determine the subframe where the paging occasion is located in S405 is the same as the method for the first device to determine the subframe where the paging occasion is located in S305 above.

In another example, the method for determining the paging occasion by the first device according to the first cycle, the first information and the identifier of the terminal device in S202 is shown in fig. 5, and the method needs to be performed under the condition that the second cycle is less than or equal to the first set value, where the second cycle refers to the DRX cycle of the terminal device, and the first set value may be set to be an even multiple of 2.56 seconds, for example, 5.12 seconds, 10.24 seconds, 20.48 seconds, and so on.

The method shown in fig. 5 is as follows:

s501, the first device determines a frame where the paging occasion is located according to the first period, the identifier of the terminal device and the information of the initial frame of the search space of the PDCCH in the first information.

The first device determines the frame where the paging occasion is according to the following equation 12:

SFN＝CSS_{_period}(floor (UE _ ID/N) mod Ns) + frame _ offset equation 12

In the above equation 12, SFN indicates the frame where the paging occasion is located, CSS_{_period}Indicating a first period, UE _ ID indicating the identity of the terminal deviceN is a non-negative integer, frame _ offset is an offset of a start frame in information of the start frame of the search space of the PDCCH, and Ns is 1024/CSS _ period.

S502, in the frame where the paging occasion is located, the first device determines the subframe where the paging occasion is located according to the information of the initial subframe of the PDCCH search space in the first information.

if the information of the initial subframe of the PDCCH search space includes offsets of a plurality of initial subframes, determining i _ s according to the following formula 13, and then determining the subframe where the paging occasion is located according to the i _ s determined by the formula 13 and a preset corresponding relationship between i _ s and the subframe:

equation 13 for i _ s ═ floor (UE _ ID/N) mod Ns

In the above equation 13, UE _ ID represents an identity of a terminal device, N represents a non-negative integer, and Ns represents the number of offsets of a starting subframe in information of the starting subframe of a search space of a PDCCH.

The method for the first device to determine the subframe where the paging occasion is located in S502 is the same as the method for the first device to determine the subframe where the paging occasion is located in S405 and the method for the first device to determine the subframe where the paging occasion is located in S305.

It should be noted that, in the paging message transmission method described in the foregoing embodiment, the first device is used as the execution subject for explanation, but the execution subject of the method described in the foregoing embodiment may also be the second device. Therefore, the embodiment of the present invention further provides another paging message transmission method, in which a second device is used as an execution main body, and the second device executes the method described in the foregoing embodiment. In the paging message transmission method using the first device as the execution subject and the paging message transmission method using the second device as the execution subject, the first device and the second device determine the paging occasion by using the same method, and perform paging message transmission at the paging occasion, where the first device and the second device are respectively a transmitting end and a receiving end or a receiving end and a transmitting end of the paging message transmission, that is, the first device and the second device both need to perform operations similar to the method described in the above embodiment, and may acquire the same paging occasion to perform paging message transmission. For the sake of brevity, no further description is provided herein.

In a paging message transmission method provided by an embodiment, a period of a PDCCH search space for paging, information of a starting frame and information of a starting subframe of the PDCCH search space for paging are added to a determination process of a paging occasion for transmitting a paging message to adapt to NB-IoT after a physical layer change. The base station and the terminal device both adopt the technical scheme provided by the embodiment to determine the same paging occasion, the base station sends a paging message to the terminal device at the determined paging occasion, and the terminal device receives the paging message sent by the base station at the determined paging occasion. The terminal equipment monitors the PDCCH in a discontinuous message receiving mode in an idle state so as to receive the paging message sent by the base station, and the effect of saving the power consumption of the terminal equipment is achieved.

Example two

An embodiment of the present invention further provides a first device, where the first device is configured to execute a paging message transmission method provided in the first embodiment, and the first device may employ the methods shown in fig. 2 to fig. 5, with reference to fig. 6, where the first device 600 includes: a processing unit 601 and a transceiving unit 602.

A processing unit 601, configured to obtain a first period, first information, and an identifier of a terminal device, where the first period is a period of a PDCCH search space of a physical downlink control channel, the first information includes information of a starting frame and information of a starting subframe of the PDCCH search space, and the PDCCH search space is used for the terminal device to monitor, in the PDCCH search space, a paging message sent by a PDCCH receiving base station;

a processing unit 601, configured to determine a paging occasion according to the first cycle, the first information, and an identifier of the terminal device;

a transceiving unit 602, configured to perform paging message transmission with the second device at the paging occasion determined by the processing unit 601.

When the first device 600 is a base station, the second device is a terminal device, and when the first device 600 is a terminal device, the second device is a base station.

Optionally, the processing unit 601 is specifically configured to:

when the second period is used, determining a frame where the paging occasion is located according to the first period, the identifier of the terminal equipment and the information of the initial frame of the search space of the PDCCH in the first information;

Optionally, when determining the frame of the paging occasion according to the first period, the identifier of the terminal device, and the information of the starting frame of the search space of the PDCCH, the processing unit 601 is specifically configured to:

determining a frame where a paging occasion is located according to the following formula:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

where SFN denotes the frame in which the paging occasion is located, CSS_{_period}Indicating a first period, UE _ ID indicating the identity of the terminal device, N indicating a non-negative integer, frame _ offset indicating the offset of the start frame in the information of the start frame of the search space of PDCCH, Ns 1024/CSS _ period.

Optionally, the processing unit 601 is further configured to:

the processing unit 601 is specifically configured to:

and determining the paging occasion according to the first period, the first information, the identifier of the terminal equipment and the second period.

Optionally, when determining the paging occasion according to the first cycle, the first information, the identifier of the terminal device, and the second cycle, the processing unit 601 is specifically configured to:

when the second period is larger than the first set value, determining at least one superframe where the paging occasion is located according to the identifier of the terminal equipment and the second period;

performing the following for each superframe of at least one superframe:

determining a starting frame of a paging window in a superframe according to the first period, the identifier of the terminal equipment and the information of the starting frame of the search space of the PDCCH in the first information;

determining the ending frame of the paging window in the superframe according to the starting frame of the paging window and the length of the paging window;

determining a frame where a paging occasion is located according to a first period, an identifier of terminal equipment and information of a starting frame of a search space of a PDCCH in first information between the starting frame of the paging window and an ending frame of the paging window;

Optionally, when determining the starting frame of the paging window in the super-frame according to the first period, the identifier of the terminal device, and the information of the starting frame of the search space of the PDCCH in the first information, the processing unit 601 is specifically configured to:

determining a starting frame of a paging window according to the following formula:

PW_start＝CSS__period*i_eDRX+frame_offset

wherein PW _ start represents a start frame of a paging window, CSS __periodIndicates a first period, frame _ offset indicates an offset amount of a start frame in information of the start frame of a search space of PDCCH, i_eDRX＝UE_ID mod(1024/CSS__period) And UE _ ID represents the identity of the terminal device.

Optionally, when the processing unit 601 determines frame _ offset, the method specifically includes:

when the information of the initial frame of the search space of the PDCCH includes the offsets of a plurality of initial frames, determining i _ s according to a formula i _ s-floor (UE _ ID/N) mod Ns; wherein, the UE _ ID represents the identification of the terminal equipment, N represents a non-negative integer, and Ns represents the number of the offset of the initial frame in the information of the initial frame of the search space of the PDCCH;

and determining frame _ offset according to the determined i _ s and the preset corresponding relation between i _ s and frame _ offset.

Optionally, when determining the frame where the paging occasion is located according to the first cycle, the identifier of the terminal device, and the information of the starting frame of the search space of the PDCCH in the first information, the processing unit 601 is specifically configured to:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)

where SFN denotes the frame in which the paging occasion is located, CSS_{_period}Indicating a first period, UE _ ID indicating the identity of the terminal device, N being a non-negative integer, Ns indicating the number of offsets of the starting frame in the information of the starting frame of the search space of the PDCCH.

when the second period is greater than the first set value and the first period is less than or equal to the second set value, determining at least one superframe where the paging occasion is located according to the identifier of the terminal equipment and the second period;

performing the following for each superframe of at least one superframe:

determining a starting frame of a paging window in a superframe according to a second set value and the identifier of the terminal equipment;

dividing the paging window into at least one window with the length being a second set value between the starting frame of the paging window and the ending frame of the paging window, and determining a frame where a paging occasion is located in each window of the at least one window according to a first period, the identification of the terminal equipment and the information of the starting frame of the PDCCH search space in the first information;

Optionally, the processing unit 601 is specifically configured to determine at least one superframe in which the paging occasion is located according to the identifier of the terminal device and the second period;

determining at least one superframe in which a paging occasion is located according to the following formula:

H-SFN mod T_eDRX,H＝(UE_ID mod T_eDRX,H)

wherein H-SFN represents at least one superframe in which paging occasion is located, T_eDRX,HIndicating the second periodicity, and UE _ ID indicating the identity of the terminal device.

Optionally, when determining the starting frame of the paging window in the superframe according to the second setting value and the identifier of the terminal device, the processing unit 601 is specifically configured to:

SFN＝A*[floor(UE_ID/N)mod 4]

Optionally, when determining the end frame of the paging window in the superframe according to the start frame of the paging window and the length of the paging window, the processing unit 601 is specifically configured to:

PW_end＝(PW_start+L*100-1)mod 1024

wherein, PW _ end represents the end frame of the paging window, PW _ start represents the start frame of the paging window, and L represents the length of the paging window.

Optionally, the processing unit 601 is specifically configured to determine a frame where a paging occasion is located according to the first period, the identifier of the terminal device, and information of a starting frame of a PDCCH search space in the first information;

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

where SFN denotes the frame in which the paging occasion is located, CSS_{_period}Denotes a first period, UE _ ID denotes an identity of a terminal device, N denotes a non-negative integer, and frame _ offset denotes a start frame among information of a start frame of a PDCCH search spaceNs ═ max CSS _ period)/CSS _ period, where max CSS _ period represents the period of the largest PDCCH search space supported by the system.

Optionally, when determining the subframe where the paging occasion is located according to the information of the starting subframe of the PDCCH search space in the first information, the processing unit 601 is specifically configured to:

if the information of the starting subframe of the PDCCH search space includes offsets of a plurality of starting subframes, determining i _ s according to a formula i _ s-floor (UE _ ID/N) mod Ns, and determining a subframe where a paging occasion is located according to the determined i _ s and a preset corresponding relationship between i _ s and the subframe:

wherein, the UE _ ID represents an identifier of the terminal device, N represents a non-negative integer, and Ns represents the number of offsets of the starting subframe in the information of the starting subframe of the search space of the PDCCH.

It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

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

An embodiment of the present invention further provides a first device, where the first device is configured to execute the method for transmitting a paging message provided in the first embodiment, and the first device may adopt the methods shown in fig. 2 to fig. 5, and may be the same device as the first device shown in fig. 6. Referring to fig. 7, the first apparatus 700 includes: a processor 701, a transceiver 702, a bus 703, and a memory 704, wherein:

the processor 701, the transceiver 702, and the memory 704 are connected to each other by a bus 703; the bus 703 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus.

The processor 701 in fig. 7 corresponds to the processing unit 601 in fig. 6, the transceiver 702 in fig. 7 corresponds to the transmitting/receiving unit 602 in fig. 6, and the transceiver 702 refers to an antenna or the like having receiving and transmitting functions. The first device 700 also includes a memory 704 for storing programs and the like. In particular, the program may include program code comprising computer operating instructions. The memory 704 may comprise Random Access Memory (RAM) and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. The processor 701 executes the application program stored in the memory 704 to implement the paging message transmission method as described above.

EXAMPLE III

An embodiment of the present invention further provides a second device, where the second device is configured to execute a paging message transmission method provided in the first embodiment, and the second device may adopt the methods shown in fig. 2 to fig. 5, and as shown in fig. 8, the second device 800 includes: a processing unit 801 and a transceiving unit 802.

A processing unit 801, configured to acquire a first period, first information, and an identifier of a terminal device, where the first period is a period of a PDCCH search space of a physical downlink control channel, the first information includes information of a starting frame and information of a starting subframe of the PDCCH search space, and the PDCCH search space is used for the terminal device to monitor, in the PDCCH search space, a paging message sent by a PDCCH receiving base station;

a processing unit 801, configured to determine a paging occasion according to the first cycle, the first information, and an identifier of the terminal device;

a transceiving unit 802, configured to perform paging message transmission with the first device at the paging occasion determined by the processing unit 801.

When the second device 800 is a base station, the first device is a terminal device, and when the second device 800 is a terminal device, the first device is a base station.

Optionally, the processing unit 801 is specifically configured to:

determining a frame where a paging occasion is located according to the first period, the identifier of the terminal equipment and information of a starting frame of a search space of a PDCCH in the first information;

Optionally, when determining the frame of the paging occasion according to the first cycle, the identifier of the terminal device, and the information of the starting frame of the search space of the PDCCH, the processing unit 801 is specifically configured to:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

Optionally, the processing unit 801 is further configured to:

the processing unit 801 is specifically configured to:

Optionally, when the processing unit 801 determines the paging occasion according to the first cycle, the first information, the identifier of the terminal device, and the second cycle, the processing unit is specifically configured to:

performing the following for each superframe of at least one superframe:

Optionally, when determining the starting frame of the paging window in the super-frame according to the first period, the identifier of the terminal device, and the information of the starting frame of the search space of the PDCCH in the first information, the processing unit 801 is specifically configured to:

PW_start＝CSS__period*i_eDRX+frame_offset

wherein PW _ start represents a start frame of a paging window, CSS __periodRepresenting a first period, fThe random _ offset indicates the offset of the start frame in the information of the start frame of the search space of PDCCH, i_eDRX＝UE_ID mod(1024/CSS__period) And UE _ ID represents the identity of the terminal device.

Optionally, the determining, by the processing unit 801, frame _ offset specifically includes:

Optionally, when the processing unit 801 determines a frame where a paging occasion is located according to the first cycle, the identifier of the terminal device, and the information of the starting frame of the search space of the PDCCH in the first information, the processing unit is specifically configured to:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)

performing the following for each superframe of at least one superframe:

Optionally, the processing unit 801 is specifically configured to determine at least one superframe in which the paging occasion is located according to the identifier of the terminal device and the second period;

H-SFN mod T_eDRX,H＝(UE_ID mod T_eDRX,H)

Optionally, when determining the starting frame of the paging window in the superframe according to the second setting value and the identifier of the terminal device, the processing unit 801 is specifically configured to:

SFN＝A*[floor(UE_ID/N)mod 4]

Optionally, when the processing unit 801 determines the end frame of the paging window in the superframe according to the start frame of the paging window and the length of the paging window, the processing unit is specifically configured to:

PW_end＝(PW_start+L*100-1)mod 1024

Optionally, the processing unit 801 determines, according to the first period, the identifier of the terminal device, and information of a starting frame of a PDCCH search space in the first information, a frame where a paging occasion is located, specifically for use;

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

where SFN denotes the frame in which the paging occasion is located, CSS_{_period}Indicating a first period, UE _ ID indicating the identity of the terminal device, N indicating a non-negative integer, frame _ offset indicating the offset of the starting frame in the information of the starting frame of the PDCCH search space, Ns ═ max CSS _ period)/CSS _ period, where max CSS _ period indicates the period of the largest PDCCH search space supported by the system.

Optionally, when determining the subframe where the paging occasion is located according to the information of the starting subframe of the PDCCH search space in the first information, the processing unit 801 is specifically configured to:

It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

An embodiment of the present invention further provides a second device, where the second device is configured to execute the method for transmitting a paging message provided in the first embodiment, and the second device may adopt the methods shown in fig. 2 to fig. 5, and may be the same device as the second device shown in fig. 8. Referring to fig. 9, the second apparatus 900 includes: a processor 901, a transceiver 902, a bus 903, and a memory 904, wherein:

the processor 901, the transceiver 902 and the memory 904 are interconnected by a bus 903; the bus 903 may be a PCI bus or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 9, but this does not indicate only one bus or one type of bus.

The processor 901 in fig. 9 corresponds to the processing unit 801 in fig. 8, the transceiver 902 in fig. 9 corresponds to the transmitting/receiving unit 802 in fig. 8, and the transceiver 902 refers to an antenna or the like having a receiving/transmitting function. The second device 900 also includes a memory 904 for storing programs and the like. In particular, the program may include program code comprising computer operating instructions. The memory 904 may comprise RAM, and may also include non-volatile memory, such as at least one disk memory. The processor 901 executes an application program stored in the memory 904 to implement the paging message transmission method as described above.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.

Claims

1. A method for transmitting a paging message, comprising:

transmitting a paging message between the first device and the second device at the paging occasion;

in the frame where the paging occasion is located, the first device determines the subframe where the paging occasion is located according to the information of the initial subframe of the PDCCH search space in the first information;

the determining, by the first device, a frame where the paging occasion is located according to the first period, the identifier of the terminal device, and information of a starting frame of the search space of the PDCCH includes:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

2. The method of claim 1, wherein the method further comprises:

3. The method of claim 2, wherein when the second period is greater than a first set value, the first device determining a paging occasion based on the first period, the first information, the identity of the terminal device, and the second period, comprises:

performing the following for each of the at least one superframe:

4. The method of claim 3, wherein the first device determines the starting frame of the paging window in the super-frame according to the first period, the identifier of the terminal device, and information of the starting frame of the search space of the PDCCH in the first information, comprising:

PW_start＝CSS__period*i_eDRX+frame_offset

5. The method of claim 4, wherein when the information of the starting frame of the search space of the PDCCH includes offsets of a plurality of starting frames, the first device determines the frame _ offset, comprising:

6. The method of claim 3, wherein the determining, by the first device, the frame where the paging occasion is located according to the first period, the identifier of the terminal device, and information of a starting frame of the search space of the PDCCH in the first information, comprises:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)

wherein SFN represents the searchFrame, CSS, in which the call opportunity is located_{_period}Indicating the first period, UE _ ID indicating the identity of the terminal device, N being a non-negative integer, Ns indicating the number of offsets of the start frame in the information of the start frame of the search space of the PDCCH.

7. The method of claim 2, wherein when the second period is greater than a first set value and the first period is less than or equal to a second set value, the first device determining a paging occasion based on the first period, the first information, the identity of the terminal device, and the second period, comprises:

performing the following for each of the at least one superframe:

8. The method according to claim 3 or 7, wherein the first device determines at least one superframe in which the paging occasion is located according to the identity of the terminal device and the second period, including;

H-SFN mod T_eDRX,H＝(UE_ID mod T_eDRX,H)

9. The method as claimed in claim 7, wherein said determining, by said first device, a start frame of said paging window in said super frame based on said second setting value and an identity of said terminal device comprises:

SFN＝A*[floor(UE_ID/N)mod 4]

10. The method of claim 3 or 7, wherein the first device determining an end frame of the paging window in the superframe based on a start frame of the paging window and a length of the paging window, comprises:

PW_end＝(PW_start+L*100-1)mod 1024

11. The method of claim 7, wherein the first device determines a frame where the paging occasion is located according to the first period, the identifier of the terminal device, and information of a starting frame of the PDCCH search space in the first information, including;

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

12. The method of claim 1, 3 or 7, wherein the determining, by the first device, the subframe in which the paging occasion is located according to the information of the starting subframe of the PDCCH search space in the first information comprises:

13. A first device, comprising:

the receiving and sending unit is used for transmitting the paging message with the second equipment at the paging occasion determined by the processing unit;

the processing unit is specifically configured to:

in the frame where the paging occasion is located, determining the subframe where the paging occasion is located according to the information of the initial subframe of the PDCCH search space in the first information;

the processing unit, when determining a frame where the paging occasion is located according to the first cycle, the identifier of the terminal device, and information of a starting frame of the search space of the PDCCH, is specifically configured to:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

14. The first device of claim 13, wherein the processing unit is further to:

the processing unit is specifically configured to:

15. The first device of claim 14, wherein when determining the paging occasion according to the first cycle, the first information, the identifier of the terminal device, and the second cycle, the processing unit is specifically configured to:

performing the following for each of the at least one superframe:

16. The first device of claim 15, wherein the processing unit, when determining the starting frame of the paging window in the super-frame according to the first period, the identifier of the terminal device, and the information of the starting frame of the search space of the PDCCH in the first information, is specifically configured to:

PW_start＝CSS__period*i_eDRX+frame_offset

17. The first device of claim 16, wherein said processing unit, when determining said frame _ offset, specifically comprises:

18. The first device according to claim 15, wherein the processing unit, when determining the frame where the paging occasion is located according to the first period, the identifier of the terminal device, and information of a starting frame of the search space of the PDCCH in the first information, is specifically configured to:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)

19. The first device of claim 14, wherein when determining the paging occasion according to the first cycle, the first information, the identifier of the terminal device, and the second cycle, the processing unit is specifically configured to:

performing the following for each of the at least one superframe:

20. The first device according to claim 15 or 19, wherein the processing unit is configured to determine at least one superframe in which the paging occasion is located according to the identifier of the terminal device and the second period;

H-SFN mod T_eDRX,H＝(UE_ID mod T_eDRX,H)

21. The first device of claim 19, wherein the processing unit, when determining the starting frame of the paging window in the superframe according to the second setting value and the identifier of the terminal device, is specifically configured to:

SFN＝A*[floor(UE_ID/N)mod 4]

22. The first device according to claim 15 or 19, wherein the processing unit, when determining the end frame of the paging window in the superframe according to the start frame of the paging window and the length of the paging window, is specifically configured to:

PW_end＝(PW_start+L*100-1)mod 1024

23. The first device of claim 19, wherein the processing unit is configured to determine, according to the first period, an identifier of the terminal device, and information of a starting frame of the PDCCH search space in the first information, a frame where the paging occasion is located;

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

wherein SFN represents the frame where the paging occasion is located, CSS_{_period}Denotes the first period, UE _ ID denotes an identity of the terminal device, N denotes a non-negative integer, frame _ offset denotes an offset amount of a start frame in information of the start frame of the PDCCH search space, Ns ═ max CSS _ period)/CSS _ period, where max isCSS _ period denotes a period of a maximum PDCCH search space supported by the system.

24. The first apparatus according to claim 13, 15 or 19, wherein when determining the subframe in which the paging occasion is located according to the information of the starting subframe of the PDCCH search space in the first information, the processing unit is specifically configured to:

25. A second device, comprising:

the receiving and sending unit is used for transmitting the paging message with the first equipment at the paging occasion determined by the processing unit;

the processing unit is specifically configured to:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

26. The second device of claim 25, wherein the processing unit is further to:

the processing unit is specifically configured to:

27. The second device of claim 26, wherein when determining the paging occasion according to the first cycle, the first information, the identifier of the terminal device, and the second cycle, the processing unit is specifically configured to:

performing the following for each of the at least one superframe:

28. The second device according to claim 27, wherein the processing unit, when determining the starting frame of the paging window in the super-frame according to the first period, the identifier of the terminal device, and the information of the starting frame of the search space of the PDCCH in the first information, is specifically configured to:

PW_start＝CSS__period*i_eDRX+frame_offset

29. The second device according to claim 28, wherein the processing unit determines the frame _ offset, specifically comprising:

30. The second device according to claim 27, wherein the processing unit, when determining the frame where the paging occasion is located according to the first period, the identifier of the terminal device, and the information of the starting frame of the search space of the PDCCH in the first information, is specifically configured to:

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)

31. The second device of claim 26, wherein when determining the paging occasion according to the first cycle, the first information, the identifier of the terminal device, and the second cycle, the processing unit is specifically configured to:

performing the following for each of the at least one superframe:

32. The second device according to claim 27 or 31, wherein the processing unit is specifically configured to determine at least one superframe in which the paging occasion is located according to the identifier of the terminal device and the second period;

H-SFN mod T_eDRX,H＝(UE_ID mod T_eDRX,H)

33. The second device according to claim 31, wherein the processing unit, when determining the starting frame of the paging window in the superframe according to the second setting value and the identifier of the terminal device, is specifically configured to:

SFN＝A*[floor(UE_ID/N)mod 4]

34. The second device according to claim 27 or 31, wherein the processing unit, when determining the end frame of the paging window in the superframe according to the start frame of the paging window and the length of the paging window, is specifically configured to:

PW_end＝(PW_start+L*100-1)mod 1024

35. The second device according to claim 31, wherein the processing unit is configured to determine, according to the first period, the identifier of the terminal device, and information of a starting frame of the PDCCH search space in the first information, a frame in which the paging occasion is located;

SFN＝CSS_{_period}*(floor(UE_ID/N)mod Ns)+frame_offset

36. The second device according to claim 25, 27 or 31, wherein the processing unit, when determining the subframe where the paging occasion is located according to the information of the starting subframe of the PDCCH search space in the first information, is specifically configured to: