CN111866991A

CN111866991A - Terminal access method and equipment

Info

Publication number: CN111866991A
Application number: CN201910360451.9A
Authority: CN
Inventors: 曹丽芳; 张龙; 旷婧华; 邓伟; 江天明; 陈宁宇; 孙朝
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-10-30

Abstract

A terminal access method and equipment are provided, wherein in the terminal access method, a terminal can receive slice frequency information sent by a network, determine the corresponding relation between different slices and frequencies, and further select a proper target frequency to perform cell access/reselection/switching according to a slice supported by the terminal, or select a proper target frequency as the highest priority frequency of the cell access/reselection/switching, thereby realizing the purpose of providing differentiated services for the cell access/reselection/switching of the terminal based on the slice supported by the terminal.

Description

Terminal access method and equipment

Technical Field

The invention relates to the technical field of mobile communication, in particular to a terminal access method and equipment.

Background

The 3GPP defines a network slice (network slice) as a logical network that can provide dedicated network capabilities and network characteristics, one network slice always includes a radio part and a core network part, and traffic of different network slices is scheduled based on Protocol Data Unit (PDU) sessions. The network may implement different network slices by scheduling and providing different layer 1/layer 2(L1/L2) configurations. For convenience of description, a network slice is also referred to herein simply as a slice. If NSSAI is provided by a non-access stratum (NAS), the User Equipment (UE) will provide assistance information for network slice selection in an RRC message. While the network may support a large number of slices (hundreds), the UE supports a maximum of 8 slices at a time.

The current wireless slice solution is mainly that after a terminal accesses a network, the base station selects an Access and mobility management Function (AMF) of a core network element according to a single network slice selection assistance information (S-NSSAI) reported by the terminal, and selects whether to switch a frequency point according to a service type initiated by the terminal. Meanwhile, the wireless slice supports a scheduling mode based on a slice granularity of 5QI so as to guarantee the experience of the sliced user.

Disclosure of Invention

At least one embodiment of the present invention provides a terminal access method and device, which are used for providing differentiated services for cell access/reselection/handover of a terminal based on slices supported by the terminal itself.

According to an aspect of the present invention, at least one embodiment provides a terminal access method, including:

a terminal receives slice frequency information which is sent by a network and used for indicating the corresponding relation between slices and frequency points;

the terminal selects a corresponding target frequency according to a first slice supported by the terminal and the slice frequency information, and performs a cell action or a frequency with the highest priority of the cell action, wherein the cell action comprises at least one of cell access, cell reselection and cell handover.

According to at least one embodiment of the invention, the slice frequency information comprises at least one of:

a slice and a frequency corresponding to the slice;

a priority of a slice and a frequency corresponding to the slice;

a frequency and a slice corresponding to the frequency;

the frequency and the priority of the slice corresponding to the frequency.

According to at least one embodiment of the invention, the slice frequency information comprises a first frequency corresponding to the first slice.

According to at least one embodiment of the present invention, the slice frequency information includes the first slice and at least one first frequency corresponding to the first slice;

the selecting the corresponding target frequency comprises:

and the terminal selects the first frequency with the highest priority from at least one first frequency corresponding to the first slice as the target frequency.

According to at least one embodiment of the present invention, the slice frequency information includes the first slice and a priority of at least one first frequency corresponding to the first slice;

the selecting the corresponding target frequency comprises:

and the terminal selects a corresponding target frequency from at least one first frequency corresponding to the first slice by combining the priority of each first frequency, the signal quality of the cell of each first frequency and the cell load information.

According to at least one embodiment of the present invention, the selecting the corresponding target frequency further comprises:

and the terminal does not take other frequencies except the frequency corresponding to the first slice as candidates of the target frequency.

According to at least one embodiment of the present invention, the slice frequency information does not include a frequency corresponding to the first slice;

the selecting the corresponding target frequency further comprises:

and the terminal selects corresponding target frequency from the searched frequencies of each cell according to a preset criterion.

According to at least one embodiment of the present invention, the priority of the slice and the frequency or frequency corresponding to the slice included in the slice frequency information is a priority of a group of slices and a frequency or frequency corresponding to each slice;

alternatively, the first and second electrodes may be,

the frequency included in the slice frequency information and the priority of the slice or slice corresponding to the frequency are a set of frequencies and the priority of the slice or slice corresponding to each frequency.

According to at least one embodiment of the invention, the slice frequency information is carried in a synchronization signal block SSB;

the frequency is represented by a BAND identifier BAND ID or an absolute radio channel number ARFCN.

According to at least one embodiment of the present invention, when the terminal itself supports a plurality of slices, the first slice is a slice with a highest importance level among the plurality of slices.

According to another aspect of the present invention, at least one embodiment further provides a terminal access method, including:

and sending slice frequency information for indicating the corresponding relation between the slices and the frequency points to the terminal.

a slice and a frequency corresponding to the slice;

a priority of a slice and a frequency corresponding to the slice;

a frequency and a slice corresponding to the frequency;

the frequency and the priority of the slice corresponding to the frequency.

According to at least one embodiment of the present invention, transmitting slice frequency information to a terminal includes:

and sending a first corresponding relation between the slice and the frequency corresponding to the slice or the priority of the frequency to the terminal.

According to at least one embodiment of the present invention, when a slice in the first corresponding relationship corresponds to multiple frequencies, the multiple frequencies in the first corresponding relationship are sorted according to a preset priority order, or the sent first corresponding relationship includes priority information of each frequency.

and sending a second corresponding relation between the frequency and the slice or the priority of the slice corresponding to the frequency to the terminal.

According to at least one embodiment of the present invention, when one frequency in the second corresponding relationship corresponds to multiple slices, the multiple slices in the second corresponding relationship are sent in an order of a preset priority, or the second corresponding relationship includes priority information of each slice.

According to at least one embodiment of the invention, the slice frequency information is carried in a synchronization signal block SSB; the frequency is represented by a BAND identifier BAND ID or an absolute radio channel number ARFCN.

There is also provided, in accordance with another aspect of the present invention, at least one embodiment, a terminal, comprising:

the terminal is used for receiving the slicing frequency information which is sent by the network and used for indicating the corresponding relation between the slices and the frequency points;

and the processor is used for selecting a corresponding target frequency according to a first slice supported by the processor and the slice frequency information, and performing cell action or using the selected target frequency as the highest priority frequency of the cell action, wherein the cell action comprises at least one of cell access, cell reselection and cell handover.

a slice and a frequency corresponding to the slice;

a priority of a slice and a frequency corresponding to the slice;

a frequency and a slice corresponding to the frequency;

the frequency and the priority of the slice corresponding to the frequency.

the processor is further configured to select, by the terminal, a first frequency with a highest priority from at least one first frequency corresponding to the first slice as the target frequency.

the processor is further configured to select a corresponding target frequency from at least one first frequency corresponding to the first slice, in combination with the priority of each first frequency, the signal quality of the cell of each first frequency, and the cell load information.

According to at least one embodiment of the invention, the processor is further configured to not use other frequencies than the frequency corresponding to the first slice as candidates for the target frequency.

and the processor is further used for selecting corresponding target frequencies from the searched frequencies of the cells according to a preset criterion.

alternatively, the first and second electrodes may be,

According to another aspect of the present invention, at least one embodiment further provides a base station, including:

and the transceiver is used for sending the slice frequency information used for indicating the corresponding relation between the slices and the frequency points to the terminal.

a slice and a frequency corresponding to the slice;

a priority of a slice and a frequency corresponding to the slice;

a frequency and a slice corresponding to the frequency;

the frequency and the priority of the slice corresponding to the frequency.

According to at least one embodiment of the invention, the transceiver is further configured to transmit to the terminal a first correspondence between a slice and a frequency or priority of a frequency to which the slice corresponds.

According to at least one embodiment of the present invention, the transceiver is further configured to transmit a second correspondence between a frequency and a slice or a priority of a slice corresponding to the frequency to the terminal.

According to another aspect of the present invention, at least one embodiment provides a communication apparatus comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the terminal access method as described above.

According to another aspect of the present invention, at least one embodiment provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the terminal access method as described above.

Compared with the prior art, according to the terminal access method and the terminal access device provided by the embodiment of the invention, the terminal can receive the slice frequency information sent by the network, determine the corresponding relation between different slices and frequencies, and then the terminal can select a proper target frequency to perform cell access/reselection/switching according to the slices supported by the terminal, or select the proper target frequency as the highest priority frequency of the cell access/reselection/switching, so that differentiated services are provided for the cell access/reselection/switching of the terminal based on the slices supported by the terminal.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic view of an application scenario of a discontinuous reception method according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a terminal access method according to an embodiment of the present invention;

Fig. 3 is another flowchart of a terminal access method according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

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

fig. 7 is another schematic structural diagram of a base station 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 terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In the description and in the claims "and/or" means at least one of the connected objects.

The techniques described herein are not limited to Long Time Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband code division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11(Wi-Fi), IEEE802.16(WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation partnership project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes the NR system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications.

The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

At present, after a terminal accesses a network, a base station can select whether to switch to other frequency points according to a slice type of a terminal service, but some scenes need to select the network before accessing, for example, the problem of differentiated service requirements during cell initial access cannot be solved at present.

1) At present, the protocol can not support the function that a terminal of a specific slice only accesses a specific frequency point.

Generally, there may be some terminals in the network that only support a specific slice, such as terminals with extremely high confidentiality or particularly sensitive to time-lapse performance, and there is a strong binding requirement for the frequency point of initial access. For example, a specific terminal in a vertical industry, such as a smart factory, a port ship, a smart medical service and the like, which is particularly sensitive to the time delay performance, wants to initially access an FDD frequency point to ensure an ultra-low time delay and guarantee service requirements, and cannot accept the time delay loss caused by the process of initially accessing a TDD frequency point and then switching the FDD frequency point to another FDD frequency point through operations such as switching.

2) At present, the protocol cannot support the function that a terminal of a specific slice preferentially accesses a specific frequency point.

Different frequency point networks have different performances due to different frame structure configurations and other reasons, for example, some frequency points have high uplink rate, some frequency points have low time delay, and some frequency points have high downlink rate, so that the support capability for different slices is different. For a terminal that supports only a certain slice (or has a high requirement for uplink capacity, or a high requirement for delay, or a high requirement for downlink capacity), it is generally desirable that the terminal directly select the network with the best performance. For example, a device only used for augmented reality/virtual reality (AR/VR) has a high requirement on an uplink rate, and it is desirable to preferentially access to a network with a high uplink resource proportion, thereby obtaining an uplink high rate performance, ensuring smooth user experience, and reducing overhead such as signaling caused by switching after access.

In order to solve at least one of the above problems, embodiments of the present invention provide a terminal access method, which meets a requirement that a terminal supporting a specific slice can preferentially access an optimal network by using a priority relationship of a correspondence between a base station broadcast frequency point and the slice.

Referring to fig. 1, fig. 1 is a block diagram of a wireless communication system to which an embodiment of the present invention is applicable. The wireless communication system includes a terminal 11 and a base station 12. The terminal 11 may also be referred to as a user terminal or a User Equipment (UE), where the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device, and the specific type of the terminal 11 is not limited in the embodiment of the present invention. The Base Station 12 may be various Base stations and/or core network elements, wherein the Base stations may be 5G and later-version Base stations (e.g., gNB, 5G NR NB, etc.), or Base stations in other communication systems (e.g., eNB, WLAN access point, or other access points, etc.), wherein the Base Station 12 may be referred to as a node B, an evolved node B, an access point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, it should be noted that, in the embodiment of the present invention, only the Base Station in the NR system is taken as an example, but does not limit the specific type of base station.

The base stations 12 may communicate with the terminals 11 under the control of a base station controller, which may be part of the core network or some of the base stations in various examples. Some base stations may communicate control information or user data with the core network through a backhaul. In some examples, some of the base stations may communicate with each other, directly or indirectly, over backhaul links, which may be wired or wireless communication links. A wireless communication system may support operation on multiple carriers (waveform signals of different frequencies). A multi-carrier transmitter can transmit modulated signals on the multiple carriers simultaneously. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal may be transmitted on a different carrier and may carry control information (e.g., reference signals, control channels, etc.), overhead information, data, and so on.

Base station 12 may communicate wirelessly with terminal 11 via one or more access point antennas. Each base station may provide communication coverage for a respective coverage area. The coverage area of an access point may be divided into sectors that form only a portion of the coverage area. A wireless communication system may include different types of base stations (e.g., macro, micro, or pico base stations). The base stations may also utilize different radio technologies, such as cellular or WLAN radio access technologies. The base stations may be associated with the same or different access networks or operator deployments. The coverage areas of different base stations (including coverage areas of base stations of the same or different types, coverage areas utilizing the same or different radio technologies, or coverage areas belonging to the same or different access networks) may overlap.

The communication links in a wireless communication system may comprise an Uplink for carrying Uplink (UL) transmissions (e.g., from terminal 11 to base station 12) or a Downlink for carrying Downlink (DL) transmissions (e.g., from base station 12 to terminal 11). The UL transmission may also be referred to as reverse link transmission, while the DL transmission may also be referred to as forward link transmission. Downlink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both. Similarly, uplink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both.

It should be noted that the network device according to the embodiment of the present invention may be implemented by the base station (access network node) in fig. 2, or may be implemented by the core network node, or by both the access network node and the core network node.

Referring to fig. 2, a terminal access method provided in an embodiment of the present invention is applied to a terminal side, and includes:

and step 21, the terminal receives slice frequency information which is sent by a network and used for indicating the corresponding relation between the slices and the frequency points.

Here, the slice frequency information may include at least one of:

a slice and a frequency corresponding to the slice;

a priority of a slice and a frequency corresponding to the slice;

A frequency and a slice corresponding to the frequency;

the frequency and the priority of the slice corresponding to the frequency.

Specifically, the frequency may be represented by a BAND identifier (BAND ID) or an absolute radio channel number (ARFCN), which is not specifically limited in this embodiment of the present invention.

In addition, the correspondence between the slices and the frequency points may specifically be a group of (at least 1) slices and a frequency or a priority of a frequency corresponding to each slice, or a group of (at least one) frequencies and a priority of a slice or a slice corresponding to each frequency.

The terminal may receive the slice frequency information sent by the network broadcast, for example, the slice frequency information may be carried in a synchronization signal Block (SSB, which may also be denoted as SS/PBCH Block). Generally, one SS/PBCH Block is composed of one symbol of a Primary Synchronization Signal (PSS), one symbol of a Secondary Synchronization Signal (SSs), and two symbols of a Physical Broadcast Channel (PBCH). In the embodiment of the present invention, a field (for example, a field supported slave type _ frequency or other fields) may be newly added in an SSB or other broadcast information to indicate a correspondence between a slice and a frequency supported by a network, so that a terminal may select a suitable access frequency point by reading the field.

It should be noted that the slice frequency information sent by a certain cell may include the slice frequency information related to the cell, that is, the frequency of the cell and the correspondence between slices, and may also include the slice frequency information related to other cells (e.g., adjacent cells of the cell), which is not specifically limited in this embodiment of the present invention.

And step 22, the terminal selects a corresponding target frequency according to a first slice supported by the terminal and the slice frequency information, and performs a cell action or a frequency with the highest priority of the cell action, wherein the cell action comprises at least one of cell access, cell reselection and cell handover.

Here, it should be noted that the terminal may support one or more slices, and when the terminal supports multiple slices, the first slice may be a slice with the highest importance level among the multiple slices configured or determined in advance.

Through the steps, the terminal can receive the slice frequency information sent by the network, determine the corresponding relation between different slices and frequencies, and then the terminal can select a proper target frequency to perform cell access/reselection/switching according to the slices supported by the terminal, or select a proper target frequency as the frequency with the highest priority of the cell access/reselection/switching, so that differentiated services are provided for the cell access/reselection/switching of the terminal based on the slices supported by the terminal.

For example, the terminal may access only the cell of the frequency corresponding to the first slice according to the first slice supported by the terminal, or preferentially access the cell of the frequency corresponding to the first slice. Or, when the slice frequency information does not include the frequency corresponding to the first slice, the terminal may not use other frequencies than the frequency corresponding to the first slice as candidates of the target frequency, so as to deny access to cells of other frequencies.

In the slice frequency information according to the embodiment of the present invention, the same slice may correspond to a plurality of frequencies. In this case, the slice frequency information may further include priority information of a plurality of frequencies corresponding to the same slice. Similarly, in the slice frequency information according to the embodiment of the present invention, the same frequency may correspond to a plurality of slices. In this case, the slice frequency information may further include priority information of a plurality of slices corresponding to the same frequency.

In a specific application, when a terminal supports a first slice, the slice frequency information received by the terminal may include a first frequency corresponding to the first slice, or may not include any frequency information corresponding to the first slice. Aiming at the different situations, the embodiment of the invention provides a corresponding processing mode.

According to at least one embodiment of the present invention, when the slice frequency information includes the first slice and at least one first frequency corresponding to the first slice, and when the corresponding target frequency is selected in step 22, the terminal may select a first frequency with a highest priority from the at least one first frequency corresponding to the first slice as the target frequency.

According to at least one embodiment of the present invention, when the slice frequency information includes the first slice and the priority of the at least one first frequency corresponding to the first slice, and when the corresponding target frequency is selected in step 22, the terminal may select the corresponding target frequency from the at least one first frequency corresponding to the first slice, in combination with the priority of each first frequency, the signal quality of the cell of each first frequency, and the cell load information. The factors such as the frequency priority of the cell, the signal quality of the cell, the load and the like can be comprehensively considered to carry out comprehensive decision, and the target frequency can be determined.

According to at least one embodiment of the present invention, when the slice frequency information includes the first slice and at least one first frequency corresponding to the first slice, in order to ensure that the terminal only accesses the first frequency corresponding to the first slice, when the corresponding target frequency is selected in step 22, the terminal may not use other frequencies than the frequency corresponding to the first slice as candidates of the target frequency, so as to avoid selecting other frequencies as the target frequency, and ensure that the terminal only accesses the frequency corresponding to the first slice.

According to at least one embodiment of the present invention, when the slice frequency information does not include the frequency corresponding to the first slice, and when the corresponding target frequency is selected in step 22, the terminal may select the corresponding target frequency from the searched frequencies of the cells according to a preset criterion (e.g., an existing R criterion or various criteria referring to the existing criterion).

Referring to fig. 3, a flow of the terminal access method of the embodiment of the present invention on the network side is provided, where the flow may be specifically executed by a base station, and the flow includes:

and step 31, transmitting the slice frequency information for indicating the corresponding relation between the slices and the frequency points to the terminal.

Here, the base station may send the slice frequency information to the terminal by carrying the slice frequency information in a Synchronization Signal Block (SSB), and of course, the base station may also send the slice frequency information by using other messages, which is not specifically limited in this embodiment of the present invention.

Specifically, the slice frequency information may include at least one of:

a slice and a frequency corresponding to the slice;

a priority of a slice and a frequency corresponding to the slice;

a frequency and a slice corresponding to the frequency;

the frequency and the priority of the slice corresponding to the frequency.

Through the steps, the base station can send the corresponding relation between the slices and the frequency points to the terminal, so that the terminal selects the corresponding target frequency according to the first slice supported by the terminal and the slice frequency information, and performs cell action or serves as the highest priority frequency of the cell action, wherein the cell action comprises at least one of cell access, cell reselection and cell switching, and therefore the slice supported by the terminal is realized, and differentiated service is provided for the cell access/reselection/switching of the terminal.

In this embodiment of the present invention, the slice frequency information may be represented in different forms, for example, a first correspondence between a slice and a frequency or a priority of a frequency corresponding to the slice, in which case in step 31, the base station transmits the first correspondence between the slice and the frequency or the priority of the frequency corresponding to the slice, that is, the base station transmits a group of (at least one) slices and a frequency corresponding to each slice, and when the same slice corresponds to multiple frequencies, the base station may further carry the priority information of the multiple frequencies. Here, when a slice in the first correspondence corresponds to multiple frequencies, the multiple frequencies in the first correspondence may be sorted according to a preset priority, for example, the sorting of the multiple frequencies in corresponding information fields or fields in the slice frequency information is from high to low or from low to high according to the priority of the corresponding priority, and a specific sorting manner may be predefined or configured by a network side, which is not specifically limited in the embodiment of the present invention. When one slice in the first mapping relationship corresponds to multiple frequencies, the base station may further carry priority information of each frequency in the sent first mapping relationship.

For another example, the slice frequency information may be a second correspondence between a frequency and a slice or a priority of a slice corresponding to the frequency, and in this case, in step 31, the base station may transmit the second correspondence between the frequency and the slice or the priority of the slice corresponding to the frequency. That is, the base station transmits a set of (at least one) frequencies and a slice corresponding to each frequency, and when the same frequency corresponds to multiple slices, the base station may further carry priority information of the multiple slices. Here, when one frequency in the second corresponding relationship corresponds to multiple slices, the multiple slices in the second corresponding relationship may be sorted according to a preset priority level, for example, the sorting of the multiple slices in corresponding information fields or fields in the slice frequency information is from high to low or from low to high according to a priority level of the corresponding priority level, and a specific sorting manner may be predefined or configured by a network side, which is not specifically limited in the embodiment of the present invention. When one frequency in the second correspondence corresponds to multiple slices, the base station may also carry priority information of each slice in the sent second correspondence.

In addition to the first corresponding relationship and the second corresponding relationship illustrated above, the embodiments of the present invention may also use other manners to represent the corresponding relationship between the slice and the frequency, and the details of the embodiments of the present invention are not described in detail.

The method of the embodiment of the present invention is described above from the terminal side and the base station side, respectively, and for better understanding of the above scheme, the method of the present invention will be explained below by specific examples.

In order to meet the differentiated service requirements when the terminal initially accesses, the proposal is as follows:

a field, such as a field supported slave type _ frequency, is newly added in a Synchronization Signal Block (SSB) or other broadcast information, and of course, other fields may also be used to indicate the correspondence between the slices and frequencies supported by the network, and the terminal may select an appropriate access frequency point by reading the field. The following description will take the supported slave type _ frequency as an example, and it should be noted that the embodiments of the present invention are not limited thereto.

Here, supported sliceType _ frequency represents a correspondence between a slice and a frequency, and there are at least two expression forms, which are described below by example 1 and example 2, respectively. Of course, the embodiment of the present invention may also use other manners to represent the correspondence between the slices and the frequencies, and the present invention is not limited to this. In addition, the slice IDs are unified, and the S-NSSAI values are multiplexed in the slice IDs.

S-NSSAI::＝ CHOICE{

sst BIT STRING(SIZE(8)),

sst-SD BIT STRING(SIZE(32))}

Example one:

supported sliceType _ frequency represents frequency information of preferential access corresponding to each different slice, and the frequency of Chinese movement is taken as an example for explanation:

supportedSliceType_frequency	the slice corresponds to the information of the prior access
		1(SST＝1，SD＝××)	N41(2.6GHz)N79(4.9GHz)
2(SST＝2，SD＝××)	N8(900MHz)N3(1800MHz)
		3(SST＝3，SD＝××)	N79(4.9GHz)

When supported slave type _ frequency is 1, the frequency bands representing the eMBB slice terminal with priority for initial access or cell reselection or handover are N41 (first priority), N79 (second priority); when supported slave type _ frequency is 2, N8 (first priority), N3 (second priority) represents the frequency band of the URLLC slice terminal that is preferentially initially accessed or cell reselected or handed over; when supported slave type _ frequency is 3, N79 (first priority) is a frequency band representing a priority of initial access or cell reselection or handover of the MIoT slice terminal.

The frequency information in this example is BAND, which can also be represented by ARFCN;

in this embodiment, the frequency order directly represents the priority from high to low, and other description manners may also be adopted, for example, the frequency N41 in the first row in the table is 3 in priority, and the priority N79 is 6 in priority, if there are more frequency bands, frequency subpriority may be introduced, for example, the priority is 1.1; specific description may refer to the following:

and selecting a more suitable cell for access or switching according to the frequency band priority corresponding to the broadcasted slice and the priority sequence of the alternative frequency band by simultaneously combining R criteria such as signal strength and the like, cell load conditions and the like. If no suitable cell is found (for example, the signal of the alternative frequency band is poor, or no available alternative frequency band is nearby), then no access is made.

The slice ID not represented in the list defaults to low or no requirement on the frequency band, that is, all frequency bands support the slice, and the slice terminal directly performs cell access according to the original principles such as signal strength.

Considering that the global frequency bands of 5G are more and the efficiency of one-to-one enumeration is lower, the operator configures the corresponding relation between the frequency points and the slices according to the position of the base station and the operator to which the base station belongs, so that the amount of information required to be read by the terminal is greatly reduced, and the efficiency is improved.

Example two:

supported sliceType _ frequency represents slice information corresponding to each different frequency, and the frequency points of China movement are taken as an example for explanation:

supportedSliceType_frequency	terminal slice ID with frequency band corresponding to preferential admission
		N3(1800MHz)	2，4
N41(2.6GHz)	1，5
		N79(4.9GHz)	3

When supported slave type _ frequency is equal to N3, a terminal supporting slice 2 and a terminal supporting slice 4 are admitted preferentially for representing the frequency point in initial access or cell reselection or handover; when supported slave type _ frequency is equal to N41, the terminal supporting slice 1 is admitted first for the frequency point, and the terminal supporting slice 5 is admitted second; when supported slave type _ frequency is equal to N79, the terminal supporting slice 3 is preferentially admitted for the frequency point.

In the same example, the frequency information may be frequency bands or ARFCN identifiers;

In the same example, the slice ID priority information in the above table directly represents the priority from high to low, and other description manners may also be adopted, for example, in the first row of the above table, the slice ID is 2, the priority is 5, the slice ID is 4, the priority is 7, and the like, and the specific description may refer to the following:

and selecting proper cell access or switching by the terminal according to the slice ID of the preferential admission terminal corresponding to the broadcast frequency band and combining R criteria such as cell signal intensity and the like and cell load conditions and the like.

If no slice ID appears in the list, the default is that the requirement for the frequency band is not high or no, that is, all frequency bands support the slice, and the slice terminal directly performs cell access according to the original principles such as signal strength and cell load condition.

As in the first embodiment, considering that there are more global 5G frequency bands and the efficiency of one-to-one enumeration is low, it is proposed that according to the location of the base station and the operator to which the base station belongs, the operator configures the correspondence between the frequency points and the slices, so that the amount of information to be read by the terminal is greatly reduced, and the efficiency is improved.

The implementation of the above two embodiments requires coordination between the base station and the terminal, the base station needs to broadcast the corresponding relationship between the slice and the frequency, and the terminal needs to read the broadcast information of the base station before initial access, before cell reselection, or before handover, and balance which more appropriate frequency is accessed, reselected, or handed over to according to the corresponding relationship between the frequency and the slice ID.

Wherein the slice ID in this scheme has the following meaning:

there is no ambiguity about a terminal supporting only one slice ID, and a slice ID herein refers to one of the most important or dominant slice IDs of a terminal for terminals supporting a plurality of slice IDs.

As can be seen from the above examples, in the embodiment of the present invention, a field supported slave type _ frequency may be newly added in the SSB to indicate a correspondence between a slice and a frequency band supported by a base station, and there are two specific expression ways:

1) the base station broadcasts the frequency band priority corresponding to each slice, and the representation mode of the frequency band priority can guide the terminal to select a more proper frequency band for access, switching or reselection according to the sequencing order or the priority corresponding to each frequency band.

2) The base station broadcasts the user slice ID which is preferentially admitted and corresponds to each frequency band, and the representation mode of the slice ID priority can guide the terminal to select a more proper frequency band for access or switching or reselection according to the sequencing sequence or the priority corresponding to each slice ID.

In the above process, the base station broadcasts the corresponding relationship between the slice and the frequency, the terminal reads the broadcast information of the base station before initial access, before cell reselection or before handover, and the more suitable frequency for access, reselection or handover is weighed according to the corresponding relationship between the frequency and the slice ID. In addition, for a slice ID of a certain terminal, the embodiment of the present invention may be determined in the following manner: for a terminal only supporting a certain slice ID, the slice ID of the terminal is the slice ID supported by the terminal; for a terminal supporting multiple slice IDs, the slice ID of the terminal refers to a predefined most important or most important certain slice ID of the terminal.

It can be seen from the above description that, in the embodiments of the present invention, the slicing frequency information can be broadcasted by the base station, so that the terminal can access to a network of slices more suitable for the terminal, thereby meeting the requirements of differentiated access of different devices.

Based on the method, the embodiment of the invention also provides equipment for implementing the method.

Referring to fig. 4, an embodiment of the present invention provides a terminal 40, which includes a transceiver 42 and a processor 41, wherein,

the transceiver 42 is configured to receive, by a terminal, slice frequency information that is sent by a network and used for indicating a correspondence between slices and frequency points;

the processor 41 is configured to select a corresponding target frequency according to a first slice supported by the processor and the slice frequency information, and perform a cell action or a frequency with a highest priority of the cell action, where the cell action includes at least one of cell access, cell reselection, and cell handover.

Further in accordance with at least one embodiment of the present invention, the slice frequency information includes at least one of:

a slice and a frequency corresponding to the slice;

a priority of a slice and a frequency corresponding to the slice;

a frequency and a slice corresponding to the frequency;

The frequency and the priority of the slice corresponding to the frequency.

Further in accordance with at least one embodiment of the present invention, the slice frequency information includes a first frequency corresponding to the first slice.

Further in accordance with at least one embodiment of the present invention, the slice frequency information includes the first slice and at least one first frequency corresponding to the first slice;

Further in accordance with at least one embodiment of the present invention, the slice frequency information includes a priority of the first slice and at least one first frequency corresponding to the first slice;

Furthermore, in accordance with at least one embodiment of the present invention, the processor 41 is further configured to not use other frequencies than the frequency corresponding to the first slice as candidates for the target frequency.

Furthermore, in accordance with at least one embodiment of the present invention, the slice frequency information does not include a frequency corresponding to the first slice;

the processor 41 is further configured to select a corresponding target frequency from the searched frequencies of the cells according to a preset criterion.

Furthermore, according to at least one embodiment of the present invention, the priority of the slice and the frequency or frequency corresponding to the slice included in the slice frequency information is a priority of a group of slices and a frequency or frequency corresponding to each slice;

alternatively, the first and second electrodes may be,

Further in accordance with at least one embodiment of the present invention, the slice frequency information is carried in a synchronization signal block SSB;

Further, according to at least one embodiment of the present invention, when the terminal itself supports a plurality of slices, the first slice is a slice having a highest importance level among the plurality of slices.

Referring to fig. 5, another structure of a terminal according to an embodiment of the present invention is shown, in which the terminal 500 includes: a processor 501, a transceiver 502, a memory 503, a user interface 504, and a bus interface, wherein:

In this embodiment of the present invention, the terminal 500 further includes: a computer program stored on a memory 503 and executable on a processor 501, the computer program when executed by the processor 501 implementing the steps of: receiving slice frequency information which is sent by a network and used for indicating the corresponding relation between slices and frequency points; selecting a corresponding target frequency according to a first slice supported by the self and the slice frequency information, and performing a cell action or using the selected target frequency as the highest priority frequency of the cell action, wherein the cell action comprises at least one of cell access, cell reselection and cell handover.

In fig. 5, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 501 and various circuits of memory represented by memory 503 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 502 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 504 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 501 is responsible for managing the bus architecture and general processing, and the memory 503 may store data used by the processor 501 in performing operations.

a slice and a frequency corresponding to the slice;

a priority of a slice and a frequency corresponding to the slice;

a frequency and a slice corresponding to the frequency;

the frequency and the priority of the slice corresponding to the frequency.

Further in accordance with at least one embodiment of the present invention, the slice frequency information includes the first slice and at least one first frequency corresponding to the first slice; the computer program, when executed by the processor 501, may further implement the steps of: and selecting the first frequency with the highest priority from at least one first frequency corresponding to the first slice as the target frequency.

Further in accordance with at least one embodiment of the present invention, the slice frequency information includes a priority of the first slice and at least one first frequency corresponding to the first slice; the computer program, when executed by the processor 501, may further implement the steps of: and selecting a corresponding target frequency from at least one first frequency corresponding to the first slice by combining the priority of each first frequency, the signal quality of the cell of each first frequency and the cell load information.

Further, according to at least one embodiment of the invention, the computer program, when executed by the processor 501, may further implement the steps of: and not taking other frequencies except the frequency corresponding to the first slice as candidates of the target frequency.

Furthermore, in accordance with at least one embodiment of the present invention, the slice frequency information does not include a frequency corresponding to the first slice; the computer program, when executed by the processor 501, may further implement the steps of: and selecting corresponding target frequency from the searched frequencies of the cells according to a preset criterion.

alternatively, the first and second electrodes may be,

Referring to fig. 6, a schematic structural diagram of a base station according to an embodiment of the present invention is shown in fig. 6, where the base station 60 includes a processor 61 and a transceiver 62, where:

and a transceiver 62 configured to send, to the terminal, slice frequency information indicating a correspondence between slices and frequency points.

a slice and a frequency corresponding to the slice;

a priority of a slice and a frequency corresponding to the slice;

a frequency and a slice corresponding to the frequency;

the frequency and the priority of the slice corresponding to the frequency.

Further, according to at least one embodiment of the present invention, the transceiver 62 is further configured to transmit the first correspondence between a slice and a frequency or a priority of a frequency corresponding to the slice to the terminal.

Further, according to at least one embodiment of the present invention, when one slice in the first corresponding relationship corresponds to a plurality of frequencies, the plurality of frequencies in the first corresponding relationship are sorted according to a preset priority order, or the transmitted first corresponding relationship includes priority information of each frequency.

Further, according to at least one embodiment of the present invention, the transceiver 62 is further configured to transmit a second correspondence between a frequency and a slice or a priority of a slice corresponding to the frequency to the terminal.

Furthermore, according to at least one embodiment of the present invention, when one frequency in the second corresponding relationship corresponds to multiple slices, the multiple slices in the second corresponding relationship are sent in an order of a preset priority, or the second corresponding relationship includes priority information of each slice.

Further in accordance with at least one embodiment of the present invention, the slice frequency information is carried in a synchronization signal block SSB; the frequency is represented by a BAND identifier BAND ID or an absolute radio channel number ARFCN.

Referring to fig. 7, another schematic structural diagram of a base station according to an embodiment of the present invention includes: a processor 701, a transceiver 702, a memory 703 and a bus interface, wherein:

in this embodiment of the present invention, the network device 700 further includes: a computer program stored on the memory 703 and executable on the processor 701, the computer program when executed by the processor 701 performing the steps of: and the terminal sends slice frequency information used for indicating the corresponding relation between the slices and the frequency points.

In fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 701, and various circuits, represented by memory 703, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 702 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

The processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 may store data used by the processor 701 in performing operations.

a slice and a frequency corresponding to the slice;

a priority of a slice and a frequency corresponding to the slice;

a frequency and a slice corresponding to the frequency;

the frequency and the priority of the slice corresponding to the frequency.

Further, according to at least one embodiment of the invention, the computer program, when executed by the processor 601, may further realize the steps of: and sending a first corresponding relation between the slice and the frequency corresponding to the slice or the priority of the frequency to the terminal.

Further, according to at least one embodiment of the invention, the computer program, when executed by the processor 601, may further realize the steps of: and sending a second corresponding relation between the frequency and the slice or the priority of the slice corresponding to the frequency to the terminal.

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 application, 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 of the present invention.

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.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A terminal access method, comprising:

2. The method of claim 1, wherein the slice frequency information comprises at least one of:

a slice and a frequency corresponding to the slice;

a priority of a slice and a frequency corresponding to the slice;

a frequency and a slice corresponding to the frequency;

the frequency and the priority of the slice corresponding to the frequency.

3. The method of claim 2,

the slice frequency information includes a first frequency corresponding to the first slice.

4. The method of claim 3, wherein the slice frequency information comprises the first slice and at least one first frequency corresponding to the first slice;

the selecting the corresponding target frequency comprises:

5. The method of claim 3, wherein the slice frequency information comprises a priority of the first slice and at least one first frequency corresponding to the first slice;

the selecting the corresponding target frequency comprises:

6. The method of claim 4 or 5, wherein the selecting the corresponding target frequency further comprises:

7. The method of claim 2,

the slice frequency information does not include the frequency corresponding to the first slice;

the selecting the corresponding target frequency further comprises:

8. The method of claim 2,

the slice included in the slice frequency information and the frequency or priority of the frequency corresponding to the slice are a group of slices and the frequency or priority of the frequency corresponding to each slice;

alternatively, the first and second electrodes may be,

9. The method of claim 1,

the slice frequency information is carried in a synchronization signal block SSB;

10. The method of claim 1,

when the terminal supports multiple slices, the first slice is a slice with the highest importance level in the multiple slices.

11. A terminal access method, comprising:

12. A terminal, comprising:

13. The terminal of claim 12, wherein the slice frequency information comprises at least one of:

a slice and a frequency corresponding to the slice;

a priority of a slice and a frequency corresponding to the slice;

a frequency and a slice corresponding to the frequency;

the frequency and the priority of the slice corresponding to the frequency.

14. The terminal of claim 13,

15. The terminal of claim 14, wherein the slice frequency information includes the first slice and at least one first frequency corresponding to the first slice;

16. The terminal of claim 14, wherein the slice frequency information includes a priority of the first slice and at least one first frequency corresponding to the first slice;

17. The terminal according to claim 15 or 16,

the processor is further configured to not use other frequencies than the frequency corresponding to the first slice as candidates of the target frequency.

18. The terminal of claim 13,

19. The terminal of claim 13,

alternatively, the first and second electrodes may be,

20. The terminal of claim 12,

21. The terminal of claim 12,

22. A base station, comprising:

23. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the terminal access method according to any of claims 1 to 11.

24. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the terminal access method according to any one of claims 1 to 11.