CN115190548A - Cell selection or reselection method, device, communication equipment and storage medium - Google Patents

Cell selection or reselection method, device, communication equipment and storage medium Download PDF

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Publication number
CN115190548A
CN115190548A CN202110357616.4A CN202110357616A CN115190548A CN 115190548 A CN115190548 A CN 115190548A CN 202110357616 A CN202110357616 A CN 202110357616A CN 115190548 A CN115190548 A CN 115190548A
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China
Prior art keywords
slice
slices
cell
frequency
reselection
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Chinese (zh)
Inventor
谭佳瑶
陈宁宇
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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Priority to CN202110357616.4A priority Critical patent/CN115190548A/en
Priority to PCT/CN2022/084104 priority patent/WO2022206849A1/en
Publication of CN115190548A publication Critical patent/CN115190548A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/249—Reselection being triggered by specific parameters according to timing information

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a cell selection or reselection method, a device, communication equipment and a storage medium, wherein the method comprises the following steps: a terminal equipment cell selects or reselects a cell on a first frequency, or the first frequency is regarded as the highest priority; the first frequency is a frequency supporting the most sequentially preceding slices in the first slice set, or the first frequency is a frequency supporting the most number of slices in the first slice set; the first slice set is an allowed slice set of the terminal device.

Description

Cell selection or reselection method, device, communication equipment and storage medium
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a cell selection or reselection method and apparatus, a communication device, and a storage medium.
Background
Currently, a User Equipment (UE) has a parameter called allowed slices (allowed slices), and when the UE in Idle state (Idle state) performs cell selection or reselection, a cell supporting all allowed slices is selected. When the allowed slices of the UE include multiple slices, there may not be a cell that supports the allowed slices at the same time, and in this case, there is no effective solution for how to perform cell selection or reselection.
Disclosure of Invention
In order to solve the existing technical problem, embodiments of the present invention provide a cell selection or reselection method, apparatus, communication device, and storage medium.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a cell selection or reselection method, which is applied to a terminal device, and the method includes:
a terminal equipment cell selects or reselects a cell on a first frequency, or the first frequency is regarded as the highest priority; the first frequency is a frequency supporting the most sequentially preceding slices in the first slice set, or the first frequency is a frequency supporting the most number of slices in the first slice set; the first slice set is an allowed slice set of the terminal device.
In the above solution, if the first frequency is a frequency supporting the most sequentially top slices in the first slice set, the method further includes:
and if the number of the first frequencies is at least two, the terminal equipment cell selects or reselects the cell on the first frequency with the highest priority.
In the above scheme, the slice with the front order is a slice ordered at the top N bits based on the slice order in the first slice set; the value of N is less than or equal to the number of slices contained in the first slice set.
In the above scheme, the terminal device determines the order of the slices in the first slice set based on one or more of the following manners:
the terminal equipment determines the slicing sequence according to the behavior data of the terminal equipment;
the terminal equipment determines the sequence of the slices according to the performance requirement information of the slices;
and the terminal equipment receives the slicing sequence sent by the first network equipment.
In the foregoing solution, if the first frequency is a frequency supporting the most sequentially preceding slices in the first slice set, the method further includes: if the number of the first frequencies is at least two, the terminal device cell selects or reselects to a cell on the first frequency with the highest priority corresponding to the first slice, and the first slice is the slice with the first order in the first slice set supported by the first frequency.
In the above solution, if the first frequency is a frequency supporting the largest number of slices in the first slice set, the method further includes: and if the number of the first frequencies is at least two, the terminal equipment cell selects or reselects the cell on the first frequency with the highest priority.
In the foregoing solution, if the first frequency is a frequency supporting the largest number of slices in the first slice set, the method further includes:
if the number of the first frequencies is at least two, the terminal equipment cell selects or reselects the cell with the highest ranking; the ranking refers to the ranking of the cells by the terminal device according to the cell ranking criterion.
In the above scheme, the method further comprises: the terminal device receives system information sent by a second network device, wherein the system information comprises a threshold value which is related to a slice and used for starting measurement and/or cell reselection.
In the foregoing solution, in a case that the terminal device cell selects or reselects to a cell with a highest rank, the method further includes: and the terminal equipment performs cell reselection based on the threshold value and the cell quality or power of the serving cell and the neighbor cell.
In the foregoing solution, if the first frequency is a frequency supporting the largest number of slices in the first slice set, the method further includes:
if the number of the first frequencies is at least two, the terminal equipment cell selects or reselects a cell on the first frequency with the highest priority corresponding to the first slice; the first slice is a slice that is first in order in the first slice set of all slices supported by at least two first frequencies;
or, the first slice is a slice indicated as highest priority among the first set of slices among all slices supported by at least two first frequencies;
alternatively, the first slice is a slice that is first in order in the first slice set or indicated as a highest priority among slices supported by both of the at least two first frequencies.
In a second aspect, an embodiment of the present invention further provides a cell selection or reselection method, which is applied to a first network device, where the method includes:
a first network device sends a first slice set to a terminal device, wherein the first slice set is an allowed slice set of the terminal device; the slices in the first slice set are sorted in sequence, or the first slice set comprises indication information used for indicating slice priority; the first slice set and the indication information ordered in order are used for the terminal device cell to select or reselect to a first frequency supporting the most sequentially top slices or for the terminal device cell to select or reselect to a first frequency supporting the most number of slices.
In the above scheme, the method further comprises: and the first network equipment determines the slice sequence in the first slice set according to the behavior data of the terminal equipment or the performance requirement of the slice.
In a third aspect, an embodiment of the present invention further provides a cell selection or reselection method, which is applied to a second network device, and the method includes: the second network equipment sends system information to the terminal equipment, wherein the system information comprises a threshold value which is related to the slice and is used for starting measurement and/or executing cell reselection, and the threshold value is used for the terminal equipment to select or reselect a cell on a first frequency which supports the maximum number of slices in the first slice set; the first set of slices is an allowed set of slices for the terminal device.
In a fourth aspect, an embodiment of the present invention further provides a cell selection or reselection apparatus, where the apparatus includes a first processing unit, configured to select or reselect a cell on a first frequency, or consider the first frequency as a highest priority; the first frequency is a frequency supporting the most sequentially preceding slices in the first slice set, or the first frequency is a frequency supporting the most number of slices in the first slice set; the first set of slices is an allowed set of slices.
In the foregoing solution, the first processing unit is further configured to, if the first frequency is a frequency that supports a most sequentially preceding slice in the first slice set, select or reselect a cell on the first frequency with a highest priority if the number of the first frequencies is at least two.
In the above scheme, the slice with the front order is a slice ordered at the top N bits based on the slice order in the first slice set; the value of N is less than or equal to the number of slices contained in the first slice set.
In the foregoing solution, the first processing unit is further configured to determine an order of slices in the first slice set based on one or more of the following manners:
determining the sequence of the slices according to the behavior data of the slices;
determining the sequence of the slices according to the performance requirement information of the slices;
an order of the slices transmitted by the first network device is received.
In the above solution, the first processing unit is further configured to, if the first frequency is a frequency supporting a largest number of sequentially preceding slices in a first slice set, if the number of the first frequencies is at least two, select or reselect a cell on a first frequency with a highest priority corresponding to the first slice, where the first slice is a first-in-order slice in the first slice set supported by the first frequency.
In the foregoing solution, the first processing unit is further configured to, if the first frequency is a frequency supporting the largest number of slices in the first slice set, select or reselect a cell on the first frequency with the highest priority if the number of the first frequencies is at least two.
In the foregoing solution, the first processing unit is further configured to select or reselect to a cell with a highest rank if a first frequency is a frequency supporting the largest number of slices in a first slice set, and if the number of the first frequencies is at least two; the ranking refers to the ordering of cells according to cell ranking criteria.
In the foregoing solution, the apparatus further includes a first communication unit, configured to receive system information sent by the second network device, where the system information includes a slice-related threshold for starting measurement and/or cell reselection.
In the above solution, the first processing unit is further configured to, when a cell selects or reselects to a cell with a highest rank, perform cell reselection based on the threshold and cell qualities or powers of a serving cell and a neighboring cell.
In the above solution, the first processing unit is further configured to, if a first frequency is a frequency supporting the largest number of slices in a first slice set, select or reselect a cell on a first frequency with a highest priority corresponding to the first slice if the number of the first frequency is at least two; the first slice is a slice that is first in order in the first slice set of all slices supported by at least two first frequencies; or, the first slice is a slice indicated as highest priority among the first set of slices among all slices supported by at least two first frequencies; alternatively, the first slice is a slice that is first in order in the first slice set or indicated as a highest priority among slices supported by both of the at least two first frequencies.
In a fifth aspect, an embodiment of the present invention further provides a cell selection or reselection apparatus, where the apparatus includes a second communication unit, configured to send a first slice set to a terminal device, where the first slice set is an allowed slice set of the terminal device; the slices in the first slice set are sorted in sequence, or the first slice set comprises indication information used for indicating slice priority; the first slice set and the indication information ordered in order are used for the terminal device cell to select or reselect to a first frequency supporting the most sequentially top slices or for the terminal device cell to select or reselect to a first frequency supporting the most number of slices.
In the above solution, the apparatus further includes a second processing unit, configured to determine an allowed slice order in the first slice set according to the behavior data of the terminal device or a performance requirement of the slice.
In a sixth aspect, an embodiment of the present invention further provides a cell selection or reselection apparatus, where the apparatus includes a third communication unit, configured to send system information to a terminal device, where the system information includes a threshold value used for starting measurement and/or performing cell reselection, where the threshold value is used for the terminal device to cell select or reselect to a cell on a first frequency that supports a largest number of slices in a first slice set; the first slice set is an allowed slice set of the terminal device.
In a seventh aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method according to the foregoing first aspect, second aspect, or third aspect of the embodiment of the present invention.
In an eighth aspect, an embodiment of the present invention further provides a communication device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method according to the foregoing first aspect, second aspect, or third aspect when executing the program.
The embodiment of the invention provides a cell selection or reselection method, a device, a communication device and a storage medium, wherein the method comprises the following steps: a terminal equipment cell selects or reselects a cell on a first frequency, or the first frequency is regarded as the highest priority; the first frequency is a frequency supporting the most sequentially preceding slices in the first slice set, or the first frequency is a frequency supporting the most number of slices in the first slice set; the first slice set is an allowed slice set of the terminal device. By adopting the technical scheme of the embodiment of the invention, the cell of the terminal equipment is selected or reselected to the cell on the frequency supporting the maximum number of slices in the first slice set (namely the allowed slice set of the terminal equipment), so that the cell selection or reselection is realized under the condition that no cell simultaneously supporting all slices of the terminal equipment exists.
Drawings
Fig. 1 is a first flowchart illustrating a cell selection or reselection method according to an embodiment of the present invention;
fig. 2 is a schematic view of an application scenario of a cell selection or reselection method according to an embodiment of the present invention;
fig. 3 is a second flowchart illustrating a cell selection or reselection method according to an embodiment of the present invention;
fig. 4 is a third flowchart illustrating a cell selection or reselection method according to an embodiment of the present invention;
fig. 5 is a first schematic structural diagram illustrating a cell selection or reselection apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a cell selection or reselection apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a cell selection or reselection apparatus according to a third embodiment of the present invention;
fig. 8 is a schematic diagram of a hardware component structure of a communication device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The technical scheme of the embodiment of the invention can be applied to various communication systems, such as: a Global System for Mobile communications (GSM) System, a Long Term Evolution (LTE) System, or a 5G System. Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.
For example, a communication system applied in the embodiment of the present invention may include a network device and a terminal device (also referred to as a terminal, a communication terminal, etc.); the network device may be a device that communicates with the terminal device. The network device may provide communication coverage for a certain area and may communicate with terminals located in the area. Alternatively, the network device may be a base station in each communication system, such as an evolved Node B (eNB) in an LTE system, and a base station (gNB) in a 5G system or an NR system.
It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. The communication device may include a network device and a terminal having a communication function, and the network device and the terminal device may be the above-mentioned specific devices, which are not described herein again; the communication device may further include other devices in the communication system, such as other network entities like a network controller, a mobility management entity, and the like, which is not limited in the embodiment of the present invention.
It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
The embodiment of the invention provides a cell selection or reselection method, which is applied to terminal equipment. Fig. 1 is a first flowchart illustrating a cell selection or reselection method according to an embodiment of the present invention; as shown in fig. 1, the method includes:
step 101: a terminal equipment cell selects or reselects a cell on a first frequency, or the first frequency is regarded as the highest priority; the first frequency is a frequency supporting the most sequentially preceding slices in the first slice set, or the first frequency is a frequency supporting the most number of slices in the first slice set; the first slice set is an allowed slice set of the terminal device.
By adopting the technical scheme of the embodiment of the invention, the cell of the terminal equipment is selected or reselected to the cell on the frequency supporting the maximum number of slices in the first slice set (namely the allowed slice set of the terminal equipment), so that the cell selection or reselection is realized under the condition that no cell simultaneously supporting all slices of the terminal equipment exists.
For a scheme in which the first frequency is a frequency that supports the most sequentially preceding slice in the first slice set:
in some optional embodiments, before the terminal device cell selection or reselection, the method may further include: the terminal device receives a first slice set from a first network device, and slices in the first slice set are ordered in sequence.
In this embodiment, the first network device is a core network device, the core network device issues a slice set (i.e., a first slice set) allowed by the terminal device to the terminal device, and slices in the slice set (i.e., the first slice set) are ordered in sequence. Where the ordering of the slices in the first set of slices is related to the priority of the slices, illustratively, the higher the priority of a slice, the earlier the order of the slice in the first set of slices, and correspondingly, the lower the priority of a slice, the later the order of the slice in the first set of slices.
In one example, the terminal device may directly receive the first slice set sent by the first network device and completed by the sequential ordering. For example, the first slice set received by the terminal device includes slice 1, slice 2, and slice 6, and the priority of slice 1, slice 2, and slice 6 is sorted from high to low. In another example, the terminal device may receive a first slice set including multiple slices sent by the first network device, and the priority ranks of the multiple slices, that is, the rank obtained by the terminal device is the priority rank corresponding to each slice.
In other alternative embodiments, the terminal device may also determine the order of the slices according to its own behavior data and/or performance requirement information of the slices.
In one example, the terminal device may determine the order of the slices from its own behavior data. The behavior data for example comprises usage data of the slice. For example, the behavioral data may be: determining the use times of the slices in the history duration range, and determining the sequence of the slices according to the use times of the slices; the more the number of times of use of the slice is, the earlier the order of the corresponding slice in the first slice set is, and correspondingly, the less the number of times of use of the slice is, the later the order of the corresponding slice in the first slice set is. For another example, the behavioral data may be: data of whether the slice is reserved for use; if a slice is reserved for use within a certain time range (if a certain event is reserved for live broadcast, the corresponding slice is reserved for use), the corresponding slice is regarded as a high priority, and the order of the corresponding slice in the first slice set is earlier; if the slice is not reserved for use, the corresponding slice is regarded as a low priority, and the order of the corresponding slice in the first slice set is the later.
In yet another example, the terminal device may determine the order of the slices according to performance requirement information of the slices. The performance requirement information of the slice may include, for example, information of latency requirement, reliability requirement, rate requirement, and the like. Wherein, the higher the performance requirement, the higher the corresponding slice priority, and the earlier the order of the slices in the first slice set; the lower the performance requirement, the later the corresponding slice priority, the later the order of the slices in the first slice set.
Based on this, in some optional embodiments, the terminal device determines the order of the slices in the first set of slices based on one or more of the following ways: the terminal equipment determines the slicing sequence according to the behavior data of the terminal equipment; the terminal equipment determines the sequence of the slices according to the performance requirement information of the slices; and the terminal equipment receives the sequence of the slices sent by the first network equipment.
In this embodiment, the number of frequencies supporting the most sequentially preceding slices in the first slice set (i.e., the first frequency) is one or more than one; if the number of the first frequency is one, the cell on the first frequency can be directly used as a target cell for cell selection or cell reselection, or the first frequency is regarded as the highest priority; if the number of the first frequencies is more than one, one first frequency is further determined from the more than one first frequencies to be regarded as the highest priority or to be used as a target frequency for cell selection or cell reselection.
In some optional embodiments, if the first frequency is a frequency supporting the most sequentially top slice in the first slice set, the method further comprises: and if the number of the first frequencies is at least two, the terminal equipment cell selects or reselects the cell on the first frequency with the highest priority.
In this embodiment, each frequency has the same or different priority. The terminal device may obtain the frequency priority information from broadcasted system information or dedicated signaling. If the number of the first frequencies is at least two and the priorities of the at least two first frequencies are different, the terminal device performs cell selection or reselects the cell on the first frequency with the highest priority according to the frequency priority; if the number of the first frequencies is at least two and the priorities of the at least two first frequencies are the same, the terminal device can rank the serving cell and the neighbor cells according to a cell ranking criterion, and select the cell with the highest ranking as a target cell; for example, the cell ranking criterion may be an R criterion, and the highest ranked cell may be the cell with the best cell quality. If the terminal device does not acquire the frequency priority information, which cell to select or reselect may depend on the implementation of the terminal device, for example, the terminal device may rank the serving cell and the neighbor cell directly according to a cell ranking criterion, and the cell selects or reselects to a highest-ranked cell.
In some optional embodiments, the sequentially top slice is a slice ordered N top bits based on the slice order in the first set of slices; the value of N is less than or equal to the number of slices contained in the first slice set.
In this embodiment, the number of slices in the first slice set may be many, and in order to save time for cell selection or reselection, cell selection or reselection may also be performed on the slices ordered at N bits in the first slice set.
The present solution is described below with reference to a specific example. Fig. 2 is a schematic view of an application scenario of a cell selection or reselection method according to an embodiment of the present invention; as shown in fig. 2, the Tracking Area (TA) at Location 4 (Location 4) supports 6 network slices (slice), which are respectively denoted as slice 1, slice 2, slice 3, slice 4, slice 5, and slice 6; all slices of UE1 (i.e. the first slice set) = { slice 1, slice 2, slice 4, slice 6}, all slices of UE2 (i.e. the first slice set) = { slice 1, slice 2, slice 3}, and the order of the slices in the first slice set is sorted from high to low according to priority; the slices supported by each cell (cell) at position 4 are shown in fig. 2, that is, cell 5 supports slice 1, slice 2, slice 3, slice 4 and slice 5, cell 4 supports slice 1, slice 2, slice 3 and slice 6, cell 3 supports slice 1, slice 2 and slice 3, cell 5 corresponds to frequency 5 (noted F5), cell 4 corresponds to frequency 4 (noted F4), cell 3 corresponds to frequency 3 (noted F3), and the frequency priorities for the three frequencies satisfy F3> F4> F5.
For UE1, a first slice set of UE1 = { slice 1, slice 2, slice 4, slice 6}, first determining a frequency supporting slice 1 in three frequencies, and determining that F3, F4, and F5 all support slice 1; then, judging the frequency supporting the slice 2 in the three frequencies, and determining that the F3, the F4 and the F5 all support the slice 2; judging the frequency supporting the slice 4 in the three frequencies, wherein only the F5 supports the slice 4; to this end, F5 may be determined as the frequency of the most sequentially preceding slice in the first set of slices supporting UE 1. Optionally, it may be further determined whether F5 supports slice 6, in this example, F5 does not support slice 6. Although F5 does not support slice 6, F5 still supports the most sequentially top (high priority) slice in the first slice set of UE1, so F5 is considered the highest priority and/or cell selection or reselection to cell 5 camping on for UE 1.
For UE2, a first slice set of UE2 = { slice 1, slice 2, slice 3}, first, a frequency supporting slice 1 in three frequencies is determined, and it is determined that F3, F4, and F5 all support slice 1; then, judging the frequency supporting the slice 2 in the three frequencies, and determining that the F3, the F4 and the F5 all support the slice 2; judging the frequency supporting the slice 3 in the three frequencies, and determining that the F3, the F4 and the F5 all support the slice 3; finally, F3 has the highest frequency priority according to frequency priority F3> F4> F5, so F3 is considered as the highest priority for UE2 and/or cell selection or reselection is camped on cell 3.
Optionally, if the first frequency is a frequency supporting the most sequentially top slice in the first slice set, the method further includes: if the number of the first frequencies is at least two, the terminal device cell selects or reselects to a cell on the first frequency with the highest priority corresponding to the first slice, and the first slice is the slice with the first order in the first slice set supported by the first frequency.
In this embodiment, each slice corresponds to a group of frequency priorities, and the frequency priorities corresponding to different slices may be the same or different. The terminal device may obtain the frequency priority information corresponding to each slice from the broadcasted system information or dedicated signaling. If the number of the first frequencies supporting the most sequentially-preceding slices in the first slice set is at least two, the terminal device selects or reselects a cell on the first frequency with the highest priority corresponding to the first slice based on the frequency priority corresponding to the first slice with the highest slice priority (i.e. the first order in the first slice set).
For example, the first slice set of UE2 = { slice 1, slice 2, slice 3}, it is determined that F3, F4, F5 all support slice 1, slice 2, and slice 3. The present embodiment is different from the foregoing embodiments in that the foregoing embodiments have a frequency priority F3> F4> F5 for each slice, and in the present embodiment, the frequency priorities corresponding to different slices may be different. For example, for slice 1, there may be a frequency priority of F5> F4> F3, for slice 2, there may be a frequency priority of F3> F4> F5, and for slice 3, there may be a frequency priority of F4> F3> F5. In this embodiment, for the slice with the first slice order, i.e. slice 1, the cell selects or reselects to the cell on the first frequency with the highest priority corresponding to the slice 1, i.e. F5, and selects or reselects to the cell 5 to camp on, considering as the highest priority.
In the above example, there are cells supporting all allowed slices in the first slice set for UE2, but there are no cells supporting all allowed slices in the first slice set for UE 1. According to the technical scheme of the embodiment of the invention, both the UE1 and the UE2 can select or reselect to a proper cell.
For a scheme in which the first frequency is the frequency that supports the largest number of slices in the first slice set:
in this embodiment, the terminal device cell selects or reselects to a cell supporting the frequency with the largest number of slices in the first slice set. Wherein, the number of the frequency (namely the first frequency) supporting the maximum number of the slices in the first slice set is one or more; if the number of the first frequency is one, the cell on the first frequency can be directly used as a target cell for cell selection or cell reselection, or the first frequency is regarded as the highest priority; if the number of the first frequencies is more than one, one first frequency is further determined from the more than one first frequencies to be regarded as the highest priority or to be used as a target frequency for cell selection or cell reselection.
In some optional embodiments, if the first frequency is a frequency supporting the largest number of slices in the first slice set, the method further comprises: and if the number of the first frequencies is at least two, the terminal equipment cell selects or reselects the cell with the frequency with the highest priority.
In this embodiment, each frequency has the same or different priority. The terminal device may obtain the frequency priority information from broadcasted system information or dedicated signaling. If the number of the first frequencies is at least two and the priorities of the at least two first frequencies are different, the terminal device performs cell selection or reselects the cell on the first frequency with the highest priority according to the priorities of the frequencies; if the number of the first frequencies is at least two and the priorities of the at least two first frequencies are the same, the terminal device may rank the serving cell and the neighbor cells according to a cell ranking criterion, and select a cell with the highest ranking as the target cell. Which cell is selected or reselected may depend on the implementation of the terminal, if the terminal device does not acquire the frequency priority information.
The present solution is described below with reference to a specific example. Still referring to the scenario shown in FIG. 2 as an example:
for UE1, the first slice set of UE1 = { slice 1, slice 2, slice 4, slice 6}, ordered by the number of allowed slices in the first slice set that supports UE1 on three frequencies in position 4, F5 supports slice 1, slice 2, and slice 4, i.e., 3 slices in the first slice set are supported in total; f4 supports slice 1, slice 2, and slice 6, i.e., 3 slices in the first slice set are supported in total; f3 supports slice 1 and slice 2, for a total of 2 slices in the first set of slices. The frequencies that support the largest number of slices are F5 and F4. Since frequency priority F4> F5 is configured, UE1 will select or reselect to the cell camping for F4.
Optionally, if the first frequency is a frequency supporting the maximum number of slices in the first slice set, the method further includes: if the number of the first frequencies is at least two, the terminal equipment cell selects or reselects a cell on the first frequency with the highest priority corresponding to the first slice; the first slice is a slice that is first in order in the first slice set of all slices supported by at least two first frequencies; or, the first slice is a slice indicated as highest priority among the first set of slices among all slices supported by at least two first frequencies; alternatively, the first slice is a slice that is first in order or indicated as a highest priority in the first set of slices among slices supported by both of the at least two first frequencies.
In this embodiment, each slice corresponds to a group of frequency priorities, and the frequency priorities corresponding to different slices may be the same or different. The terminal device may obtain frequency priority information corresponding to each slice from the broadcasted system information or dedicated signaling. If the number of the first frequencies supporting the largest number of slices in the first slice set is at least two, in one embodiment, the terminal device may first determine an order of the slices in the first slice set (the order of the slices in the first slice set may be indicated by the first network device while transmitting the first slice set to the terminal device, or may be additionally indicated by the first network device), further determine a first slice with a first order in the slices supported by both of the at least two first frequencies, and further select or reselect a cell on the first frequency with a highest priority corresponding to the first slice based on a frequency priority corresponding to the first slice; in another embodiment, the terminal device may determine an order of slices in the first slice set, then determine a first slice with a first order in all slices supported by at least two first frequencies, and select or reselect a cell on a first frequency with a highest priority corresponding to the first slice; in another embodiment, the terminal device may determine priorities of partial slices in the first slice set (the terminal device may determine priorities of the partial slices through an indication of the first network device, for example, the terminal device may receive the first slice set of the first network device, where the first slice set includes indication information indicating a slice priority), and then determine slices of all slices supported by at least two first frequencies, where the slices can be prioritized according to the indication of the first network device, and select a first slice with a highest priority from the slices, and a cell selects or reselects a cell on a first frequency with the highest priority corresponding to the first slice.
For example, the first slice set of UE1 = { slice 1, slice 2, slice 4, slice 6}, ordered by the number of allowed slices in the first slice set of three frequency support UE1 in position 4, F5 supports slice 1, slice 2, and slice 4, i.e., 3 slices in the first slice set are supported in total; f4 supports slice 1, slice 2, and slice 6, i.e., 3 slices in the first slice set are supported in total; f3 supports slice 1 and slice 2, for a total of 2 slices in the first slice set. The frequencies that support the largest number of slices are F5 and F4. The present embodiment is different from the foregoing embodiment in that the foregoing embodiment has a frequency priority F3> F4> F5 for each slice, and in the present embodiment, the corresponding frequency priorities may be different for different slices. For example, for slice 1, there may be a frequency priority of F5> F4> F3, for slice 2, there may be a frequency priority of F3> F4> F5, and for slice 3, there may be a frequency priority of F4> F3> F5. Then, in an embodiment, F5 and F4 both support slice 1 and slice 2, and are sorted according to the slice order, and slice 1 is the first slice in the order, then the terminal device cell selects or reselects to the cell on F5 with the highest priority corresponding to slice 1. In another embodiment, all slices supported by F5 and F4 include slice 1, slice 2, slice 4, and slice 6, and the first slice is still slice 1, then the terminal device cell selects or reselects to the cell on F5 with the highest priority corresponding to slice 1.
In yet another embodiment, if the first network device indicates that slice 1 in the first slice set is the highest priority, then since all slices supported by F5 and F4 include slice 1, slice 2, slice 4 and slice 6, but since the terminal device only knows that slice 1 is the highest priority, the terminal device cell selects or reselects to the cell on F5 with the highest priority corresponding to slice 1. If the first network device indicates that slice 1 in the first slice set is the highest priority and slice 2 is the second highest priority, then since all slices supported by F5 and F4 include slice 1, slice 2, slice 4, and slice 6, but since the terminal device only knows that slice 1 is the highest priority and slice 2 is the second highest priority, the terminal device cell selects or reselects to the cell on F5 with the highest priority corresponding to slice 1.
For UE2, the first slice set of UE2 = { slice 1, slice 2, slice 3}, ordered by the number of allowed slices in the first slice set of three frequencies in position 4 supporting UE2, F3, F4, and F5 each supporting slice 1, slice 2, and slice 3. According to the frequency priority F3> F4> F5, the UE selects the cell of F3 to camp on. In other optional embodiments, if the first frequency is a frequency supporting the largest number of slices in the first slice set, the method further comprises: if the number of the first frequencies is at least two, the terminal equipment cell selects or reselects the cell with the highest ranking; the ranking refers to the sorting of the cells by the terminal device according to the cell ranking criterion. In this embodiment, if the quality of the cells on the at least two first frequencies is different, the terminal device may determine the ranking of the cells on the at least two first frequencies according to a cell ranking criterion, select a highest ranked cell (that is, the cell quality is optimal) as a target cell, and select or reselect the target cell from the cell.
Optionally, the at least two first frequencies are all frequencies supporting the largest number of slices in the first slice set, and then the at least two first frequencies belong to the same priority, and according to the reselection rule with the same priority, the cell ranking criterion may be an R criterion. Illustratively, cell selection or reselection on the same priority frequencies should be based on the ranking of co-frequency cell reselection as defined by the following formula.
Rank R of serving cell s And rank R of neighbor cell n The criteria are shown in the following formula:
R s ＝Q meas,s +Q hyst -Q offsettemp (1)
R n ＝Q meas,n -Q offset -Q offsettemp (2)
wherein Q is meas,s A Reference Signal Receiving Power (RSRP) value, Q, representing a serving cell meas,n An RSRP value representing a neighbor cell; q offset Indicating a cell offset; q hyst Represents a cell reselection hysteresis value; q offsettemp Indicating an offset temporarily applied to the cell.
In some optional embodiments, the method further comprises: the terminal device receives system information sent by a second network device, wherein the system information comprises a threshold value which is related to a slice and used for starting measurement and/or cell reselection.
In some optional embodiments, in the case that the terminal device cell selects or reselects to the highest ranked cell, the method further comprises: and the terminal equipment performs cell reselection based on the threshold value and the cell quality or power of the serving cell and the neighbor cell.
The present embodiment is directed to slice-dependent, high-priority cell reselection or equal-priority cell reselection or low-priority cell reselection.
In an exemplary, conventional solution, for the high priority cell reselection rule:
if the system information broadcasts threshServingLowQ (representing one conditional threshold parameter) and more than 1 second has passed since the UE camped on the current serving cell, cell reselection should be performed for cells of NR frequencies or inter-RAT frequencies higher in priority than the serving frequency, if:
within the time interval treselectionRAT, the Squal is satisfied by cells with higher priority NR or EUTRAN RAT/frequency>Thresh X，HighQ ；
If the system information does not broadcast threshServinLowQ, cell reselection should be performed for cells with higher priority NR frequencies or inter-RAT frequencies than the serving frequency in the following cases:
during the time interval treselectionRAT, higher priority RAT/frequency cells satisfy Srxlev>Thresh X，HighP (ii) a And
more than 1 second has elapsed since the UE camped on the current serving cell.
For low priority cell reselection rules:
if the system information broadcasts threshServingLowQ and more than 1 second has passed since the UE camped on the current serving cell, cell reselection should be performed on cells with NR frequencies or inter-RAT frequencies lower in priority than the serving frequency, if:
-serving cell satisfying Squal within time interval treselectionerrat<Thresh Serving，LowQ The lower priority NR or E-UTRAN RAT/frequency cell satisfies Squal>Thresh X，LowQ 。
If the system information does not broadcast threshServinLowQ, cell reselection should be performed for cells on NR frequencies or inter-RAT frequencies of lower priority than the serving frequency, in the following cases:
-serving cell Srxlev is fulfilled during time interval treselection rat<Thresh Serving，LowP Preferably, take precedence ofThe cells of lower rank RAT/frequency satisfy Srxlev>Thresh X，LowP (ii) a And
more than 1 second has elapsed since the UE camped on the current serving cell.
Wherein, squal represents the measured value related to the Reference Signal Receiving Quality (RSRQ); srxlev represents a measurement value related to RSRP; thresh X，HighQ 、Thresh X，HighP 、Thresh Serving，LowQ 、Thresh X，LowQ 、Thresh Serving，LowP 、Thresh X，LowP Both represent cell reselection related thresholds.
In this embodiment, the threshold included in the system information corresponds to the above listed threshold, and the difference is that the threshold in this embodiment is a threshold related to a slice for starting measurement and/or cell reselection. It can be understood that, in this embodiment, cell reselection is performed according to the above-mentioned high-priority cell reselection rule, or the same-priority cell reselection rule or the low-priority cell reselection rule, but cell reselection is performed by using a new threshold parameter related to a slice.
Illustratively, the terminal device performs low-priority cell reselection based on the threshold and the cell quality or power of the serving cell and the neighbor cell, including:
if the quality of the cell corresponding to the first frequency is lower than a first threshold value, and the quality of the cell corresponding to a second frequency is higher than a second threshold value, the cell of the terminal equipment reselects the cell on the second frequency; wherein the number of slices supported by the second frequency is less than the number of cells supported by the first frequency.
The present solution is described below with reference to a specific example. Still referring to the scenario shown in FIG. 2 as an example:
for UE1, the first slice set of UE1 = { slice 1, slice 2, slice 4, slice 6}, ordered by the number of allowed slices in the first slice set that supports UE1 on three frequencies in position 4, F5 supports slice 1, slice 2, and slice 4, i.e., 3 slices in the first slice set are supported in total; f4 supports slice 1, slice 2, and slice 6, i.e., 3 slices in the first slice set are supported in total; f3 supports slice 1 and slice 2, for a total of 2 slices in the first slice set. Based on this, F5 and F4 may be considered a first priority and F3 may be considered a second priority. For the highest priority (i.e., first priority) frequency, the same priority reselection is performed, sorted by cell quality, and if cell 5 quality is higher than cell 4 quality, then UE1 prefers F5 (i.e., cell 5) to camp on.
In case the currently camped cell, i.e. the serving cell, is cell 5, in case the second network device is configured with slice-related thresholds for initiating measurements and/or cell reselection, it is assumed that the network is configured with a threshold Thresh for lower priority reselection Serving,Lowforslice (similar to Thresh in the aforementioned low priority cell reselection rule Serving,LowQ ) And Thresh X,Lowforslice (similar to Thresh in the aforementioned low priority cell reselection rule X,LowQ ) And a threshold Thresh for higher priority reselection X,Highforslice (similar to Thresh in the aforementioned high priority cell reselection rule X,HighQ ) For slice-based cell reselection, when cell quality of cell 5<Thresh Serving,Lowforslice And cell quality of cell 3>Thresh X,Lowforslice UE1 will reselect to cell 3; thereafter, if the cell quality of cell 4>Thresh X,Highforslice UE1 will reselect to cell 4.
For UE2, the first slice set of UE2 = { slice 1, slice 2, slice 3}, the slices in the first slice set of three frequencies in position 4 supporting UE2 are ordered, F3, F4, and F5 each support slice 1, slice 2 and slice 3, and F3, F4, and F5 are the same priority, cell 3, cell 4, and cell 5 are ordered according to the aforementioned cell ranking criterion (e.g., R criterion), and the highest ranked (i.e., best cell quality) cell is selected. If the rank of the cell quality is 5, 4 and 3, the UE selects 5 to reside.
Based on the foregoing embodiments, an embodiment of the present invention provides a cell selection or reselection method, which is applied to a first network device. Fig. 3 is a second flowchart illustrating a cell selection or reselection method according to an embodiment of the present invention; as shown in fig. 3, the method includes:
step 201: a first network device sends a first slice set to a terminal device, wherein the first slice set is an allowed slice set of the terminal device; the slices in the first slice set are sorted in sequence, or the first slice set comprises indication information used for indicating slice priority; the first set of slices and the indication information, ordered in sequence, are used for the terminal device cell selection or reselection to a first frequency supporting the most sequentially top slices or for the terminal device cell selection or reselection to a first frequency supporting the most number of slices.
In this embodiment, the first network device may be a core network device, and the core network device issues a slice set (i.e., a first slice set) allowed by the terminal device to the terminal device, where slices in the slice set (i.e., the first slice set) are ordered in sequence. Where the ordering of the slices in the first set of slices is related to the priority of the slice, illustratively the higher the priority of the slice, the earlier the order of the slice in the first set of slices, and correspondingly, the lower the priority of the slice, the later the order of the slice in the first set of slices. Or, the first slice set sent by the first network device to the terminal device further includes indication information for indicating slice priorities, where the indication information may include priorities of at least some slices in the first slice set, for example, priorities of slices ordered in top N bits in the first slice set, and a value of N is less than or equal to a number of slices included in the first slice set, so that the terminal device adopts the scheme in the foregoing embodiment to perform cell selection or reselection to a first frequency supporting a top most slice, or to perform cell selection or reselection to a first frequency supporting a top most slice number.
In some optional embodiments, the method further comprises: and the first network equipment determines the slice sequence in the allowed first slice set according to the behavior data of the terminal equipment or the performance requirement of the slice.
In this embodiment, the first network device may also determine the order of the slices according to behavior data of the terminal device and/or performance requirement information of the slices.
In one example, the first network device may obtain behavior data of the terminal device, and determine the order of the slices according to the behavior data of the terminal device. The behavior data for example comprises usage data of the slice. For example, the behavioral data may be: determining the use times of the slices in the history duration range, and determining the sequence of the slices according to the use times of the slices; the more the number of times of use of the slice is, the earlier the order of the corresponding slice in the first slice set is, and correspondingly, the less the number of times of use of the slice is, the later the order of the corresponding slice in the first slice set is. For another example, the behavioral data may be: data of whether the slice is reserved for use; if a slice is reserved for use within a certain time range (if a certain event is reserved for live broadcast, the corresponding slice is reserved for use), the corresponding slice is regarded as a high priority, and the order of the corresponding slice in the first slice set is earlier; if the slice is not reserved for use, the corresponding slice is regarded as a low priority, and the order of the corresponding slice in the first slice set is the later.
In another example, the first network device may obtain subscription information of the terminal device, obtain performance requirement information of the slice from the subscription information, and determine an order of the slice according to the performance requirement information of the slice. The performance requirement information of the slice may include, for example, information of latency requirement, reliability requirement, rate requirement, and the like. The higher the performance requirement is, the higher the corresponding slice priority is, and the more the slices are in the first slice set; the lower the performance requirement, the later the corresponding slice priority, the later the order of the slices in the first set of slices.
Based on the foregoing embodiment, an embodiment of the present invention provides a cell selection or reselection method, which is applied to a second network device. Fig. 4 is a third flowchart illustrating a cell selection or reselection method according to an embodiment of the present invention; as shown in fig. 4, the method includes:
step 301: the second network equipment sends system information to the terminal equipment, wherein the system information comprises a threshold value which is related to the slice and is used for starting measurement and/or executing cell reselection, and the threshold value is used for the terminal equipment to select or reselect a cell on a first frequency which supports the maximum number of slices in the first slice set; the first set of slices is an allowed set of slices for the terminal device.
Based on the above embodiments, the embodiment of the present invention further provides a cell selection or reselection device. Fig. 5 is a first schematic structural diagram illustrating a cell selection or reselection apparatus according to an embodiment of the present invention; as shown in fig. 5, the apparatus includes a first processing unit 11, configured to select or reselect to a cell on a first frequency, or treat the first frequency as a highest priority; the first frequency is a frequency supporting the most sequentially preceding slices in the first slice set, or the first frequency is a frequency supporting the most number of slices in the first slice set; the first set of slices is an allowed set of slices.
In some optional embodiments of the present invention, the first processing unit 11 is further configured to, if the first frequency is a frequency supporting the most sequentially preceding slice in the first slice set, select or reselect a cell on the first frequency with the highest priority if the number of the first frequencies is at least two.
In some optional embodiments of the invention, the top-ordered slice is a slice ordered top N bits based on the slice order in the first set of slices; the value of N is less than or equal to the number of slices contained in the first slice set.
In some optional embodiments of the invention, the first processing unit 11 is further configured to determine the order of the slices in the first slice set based on one or more of the following:
determining the sequence of the slices according to the behavior data of the slices;
determining the sequence of the slices according to the performance requirement information of the slices;
an order of the slices transmitted by the first network device is received.
In some optional embodiments of the present invention, the first processing unit 11 is further configured to, if the first frequency is a frequency supporting most of the first slices in the first slice set, if the number of the first frequencies is at least two, select or reselect a cell on a first frequency with the highest priority corresponding to the first slice, where the first slice is a first slice in the first slice set supported by the first frequency.
In some optional embodiments of the present invention, the first processing unit 11 is further configured to, if the first frequency is a frequency supporting the largest number of slices in the first slice set, select or reselect a cell on the first frequency with the highest priority if the number of the first frequencies is at least two.
In some optional embodiments of the present invention, the first processing unit 11 is further configured to, if the first frequency is a frequency supporting the largest number of slices in the first slice set, select or reselect the cell with the highest rank if the number of the first frequencies is at least two; the ranking refers to the ordering of cells according to cell ranking criteria.
In some optional embodiments of the present invention, the apparatus further includes a first communication unit 12, configured to receive system information sent by the second network device, where the system information includes a threshold value for initiating measurement and/or cell reselection, where the threshold value is related to a slice.
In some optional embodiments of the present invention, the first processing unit 11 is further configured to perform cell reselection based on the threshold, and cell qualities or powers of the serving cell and the neighboring cells, in a case that the cell is selected or reselected to the highest ranked cell.
In some optional embodiments of the present invention, the first processing unit 11 is further configured to, if the first frequency is a frequency supporting the largest number of slices in the first slice set, if the number of the first frequencies is at least two, select or reselect a cell on the first frequency with the highest priority corresponding to the first slice; the first slice is a slice that is first in order in the first slice set of all slices supported by at least two first frequencies; or, the first slice is a slice indicated as highest priority among the first set of slices among all slices supported by at least two first frequencies; alternatively, the first slice is a slice that is first in order or indicated as a highest priority in the first set of slices among slices supported by both of the at least two first frequencies.
In the embodiment of the invention, the cell selection or reselection device is applied to terminal equipment. The first Processing Unit 11 in the device may be implemented by a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a Micro Control Unit (MCU), or a Programmable Gate Array (FPGA) in practical application; the first communication unit 12 of the device can be realized by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol and the like) and a transceiving antenna in practical application.
The embodiment of the invention also provides a cell selection or reselection device. Fig. 6 is a schematic structural diagram of a cell selection or reselection apparatus according to an embodiment of the present invention; as shown in fig. 6, the apparatus includes a second communication unit 21, configured to send a first slice set to a terminal device, where the first slice set is an allowed slice set of the terminal device; the slices in the first slice set are sorted in sequence, or the first slice set comprises indication information used for indicating slice priority; the first set of slices and the indication information, ordered in sequence, are used for the terminal device cell selection or reselection to a first frequency supporting the most sequentially top slices or for the terminal device cell selection or reselection to a first frequency supporting the most number of slices.
In some optional embodiments of the invention, the apparatus further comprises a second processing unit 22, configured to determine an allowed slice order in the first slice set according to the behavior data of the terminal device or a performance requirement of the slice.
In the embodiment of the invention, the cell selection or reselection device is applied to first network equipment. The second processing unit 22 in the device can be realized by a CPU, a DSP, an MCU or an FPGA in practical application; the second communication unit 21 in the device can be realized by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol and the like) and a transceiving antenna in practical application.
The embodiment of the invention also provides a cell selection or reselection device. Fig. 7 is a schematic structural diagram of a cell selection or reselection apparatus according to a third embodiment of the present invention; as shown in fig. 7, the apparatus includes a third communication unit 31, configured to send system information to a terminal device, where the system information includes a threshold related to a slice for initiating measurement and/or performing cell reselection, where the threshold is used for the terminal device to select or reselect to a cell on a first frequency that supports the largest number of slices in a first slice set; the first slice set is an allowed slice set of the terminal device.
In the embodiment of the present invention, the cell selection or reselection apparatus is applied to a second network device. The third communication unit 31 in the device can be realized by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol and the like) and a transceiving antenna in practical application.
It should be noted that: the cell selection or reselection device provided in the foregoing embodiment is only illustrated by dividing the program modules when performing cell selection or reselection, and in practical applications, the processing allocation may be completed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules, so as to complete all or part of the processing described above. In addition, the cell selection or reselection apparatus provided in the foregoing embodiment and the cell selection or reselection method embodiment belong to the same concept, and specific implementation processes thereof are detailed in the method embodiment, and are not described herein again.
An embodiment of the present invention further provides a communication device, where the communication device may specifically be the terminal device, the first network device, or the second network device in the foregoing embodiment. Fig. 8 is a schematic diagram of a hardware component structure of a communication device according to an embodiment of the present invention, as shown in fig. 8, the communication device includes a memory 42, a processor 41, and a computer program stored in the memory 42 and executable on the processor 41, where the processor 41 implements the step of the cell selection or reselection method applied to the terminal device according to the embodiment of the present invention when executing the program, or the processor 41 implements the step of the cell selection or reselection method applied to the first network device according to the embodiment of the present invention when executing the program, or the processor 41 implements the step of the cell selection or reselection method applied to the second network device according to the embodiment of the present invention when executing the program.
Optionally, the communication device may also include one or more network interfaces 43. It will be appreciated that the various components of the communication device may be coupled together by a bus system 44. It will be appreciated that the bus system 44 is used to enable communications among the components. The bus system 44 includes a power bus, a control bus, and a status signal bus in addition to the data bus. For clarity of illustration, however, the various buses are labeled as bus system 44 in fig. 8.
It will be appreciated that the memory 42 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a magnetic random access Memory (Flash Memory), a magnetic surface Memory, an optical Disc, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), synchronous Static Random Access Memory (SSRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), synchronous Dynamic Random Access Memory (SLDRAM), direct Memory (DRmb Access), and Random Access Memory (DRAM). The memory 42 described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
The method disclosed in the above embodiments of the present invention may be applied to the processor 41, or implemented by the processor 41. The processor 41 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 41. The processor 41 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. Processor 41 may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in memory 42, where processor 41 reads the information in memory 42 and in combination with its hardware performs the steps of the method described above.
In an exemplary embodiment, the communication Device may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, programmable Logic Devices (PLDs), complex Programmable Logic Devices (CPLDs), FPGAs, general purpose processors, controllers, MCUs, microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.
In an exemplary embodiment, the present invention further provides a computer readable storage medium, such as the memory 42, comprising a computer program, which is executable by the processor 41 of the communication device to perform the steps of the aforementioned method. The computer readable storage medium can be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM; or may be various devices including one or any combination of the above memories.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the cell selection or reselection method of an embodiment of the present invention applied to a terminal device, or which when executed by a processor implements the steps of the cell selection or reselection method of an embodiment of the present invention applied to a first network device, or which when executed by a processor implements the steps of the cell selection or reselection method of an embodiment of the present invention applied to a second network device.
The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to arrive at new method embodiments.
Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.
The features disclosed in the several method or apparatus embodiments provided in the present application may be combined arbitrarily, without conflict, to arrive at new method embodiments or apparatus embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
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, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps of implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer-readable storage medium, and when executed, executes the steps including the method embodiments; and the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.
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 appended claims.

Claims (18)

1. A cell selection or reselection method applied to a terminal device is characterized in that the method comprises the following steps:
a terminal equipment cell selects or reselects a cell on a first frequency, or the first frequency is regarded as the highest priority; the first frequency is a frequency supporting the most sequentially preceding slices in the first slice set, or the first frequency is a frequency supporting the most number of slices in the first slice set; the first set of slices is an allowed set of slices for the terminal device.
2. The method of claim 1, wherein if the first frequency is a frequency that supports a most sequentially preceding slice in the first set of slices, the method further comprises:
and if the number of the first frequencies is at least two, the terminal equipment cell selects or reselects the cell on the first frequency with the highest priority.
3. The method of claim 1 or 2, wherein the top-ordered slice is a slice ordered by the top N bits based on the slice order in the first set of slices; the value of N is less than or equal to the number of slices contained in the first slice set.
4. The method according to any of claims 1 to 3, wherein the terminal device determines the order of the slices in the first slice set based on one or more of the following:
the terminal equipment determines the slicing sequence according to the behavior data of the terminal equipment;
the terminal equipment determines the sequence of the slices according to the performance requirement information of the slices;
and the terminal equipment receives the sequence of the slices sent by the first network equipment.
5. The method of claim 1, wherein if the first frequency is a frequency that supports a most sequentially preceding slice in the first set of slices, the method further comprises:
if the number of the first frequencies is at least two, the cell of the terminal equipment selects or reselects the cell on the first frequency with the highest priority corresponding to the first slice, and the first slice is the slice with the first order in the first slice set supported by the first frequency.
6. The method of claim 1, wherein if the first frequency is a frequency that supports a maximum number of slices in the first set of slices, the method further comprises:
and if the number of the first frequencies is at least two, the terminal equipment cell selects or reselects the cell on the first frequency with the highest priority.
7. The method of claim 1, wherein if the first frequency is a frequency supporting a maximum number of slices in the first set of slices, the method further comprises:
if the number of the first frequencies is at least two, the terminal equipment cell selects or reselects the cell with the highest ranking; the ranking refers to the sorting of the cells by the terminal device according to the cell ranking criterion.
8. The method of claim 7, further comprising:
the terminal device receives system information sent by a second network device, wherein the system information comprises a threshold value which is related to a slice and used for starting measurement and/or cell reselection.
9. The method of claim 8, wherein in the case that the terminal device cell selects or reselects to the highest ranked cell, the method further comprises:
and the terminal equipment performs cell reselection based on the threshold value and the cell quality or power of the serving cell and the neighbor cell.
10. The method of claim 1, wherein if the first frequency is a frequency supporting a maximum number of slices in the first set of slices, the method further comprises:
if the number of the first frequencies is at least two, the terminal equipment cell selects or reselects a cell on the first frequency with the highest priority corresponding to the first slice; the first slice is a slice that is first in order in the first slice set of all slices supported by at least two first frequencies;
or, the first slice is a slice indicated as highest priority among the first set of slices among all slices supported by at least two first frequencies;
alternatively, the first slice is a slice that is first in order in the first slice set or indicated as a highest priority among slices supported by both of the at least two first frequencies.
11. A cell selection or reselection method applied to a first network device, the method comprising:
a first network device sends a first slice set to a terminal device, wherein the first slice set is an allowed slice set of the terminal device; the slices in the first slice set are sorted in sequence, or the first slice set comprises indication information used for indicating slice priority; the first set of slices and the indication information, ordered in sequence, are used for the terminal device cell selection or reselection to a first frequency supporting the most sequentially top slices or for the terminal device cell selection or reselection to a first frequency supporting the most number of slices.
12. The method of claim 11, further comprising:
and the first network equipment determines the slice sequence in the first slice set according to the behavior data of the terminal equipment or the performance requirement of the slice.
13. A cell selection or reselection method applied to a second network device, the method comprising:
the second network equipment sends system information to the terminal equipment, wherein the system information comprises a threshold value which is related to the slice and is used for starting measurement and/or executing cell reselection, and the threshold value is used for the cell reselection of the terminal equipment to a cell on a first frequency which supports the maximum number of slices in the first slice set; the first slice set is an allowed slice set of the terminal device.
14. A cell selection or reselection apparatus, characterized in that the apparatus comprises a first processing unit configured to select or reselect a cell on a first frequency, or treat the first frequency as a highest priority; the first frequency is a frequency supporting the most sequentially preceding slices in the first slice set, or the first frequency is a frequency supporting the most number of slices in the first slice set; the first set of slices is an allowed set of slices.
15. An apparatus for cell selection or reselection, the apparatus comprising a second communication unit configured to send a first set of slices to a terminal device, the first set of slices being an allowed set of slices for the terminal device; the slices in the first slice set are sorted in sequence, or the first slice set comprises indication information used for indicating slice priority; the first set of slices and the indication information, ordered in order, are both used for the terminal device cell selection or reselection to a first frequency supporting the most sequentially top slice.
16. A cell selection or reselection apparatus, comprising a third communication unit, configured to send system information to a terminal device, where the system information includes a slice-related threshold for initiating measurement and/or performing cell reselection, where the threshold is used for the terminal device to cell select or reselect to a cell on a first frequency that supports a largest number of slices in a first slice set; the first slice set is an allowed slice set of the terminal device.
17. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 10; or,
the program when executed by a processor implementing the steps of the method of claim 11 or 12; or,
which program, when being executed by a processor, carries out the steps of the method as claimed in claim 13.
18. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the method of any one of claims 1 to 10 are implemented when the program is executed by the processor; or,
the processor, when executing the program, performs the steps of the method of claim 11 or 12; or,
the steps of the method of claim 13 are implemented when the program is executed by the processor.
CN202110357616.4A 2021-04-01 2021-04-01 Cell selection or reselection method, device, communication equipment and storage medium Pending CN115190548A (en)

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