Method executed by user equipment, and user equipment

Abstract

Provided in the present invention are a method executed by a user equipment, and a user equipment. The method comprises: receiving a system message and / or an RRC dedicated message that are sent by a network; and executing cell reselection evaluation, and determining candidate cells for cell reselection by means of a list of excluded cells and / or a list of excluded cells for network energy saving (NES) which are contained in the system message and / or the RRC dedicated message.

Description

Method performed by user equipment and user equipment TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and more particularly, to a method performed by a user equipment and a corresponding user equipment. BACKGROUND

[0002] Network energy saving is beneficial to reduce the impact on the environment and save operator costs. Generally, the network needs to periodically broadcast SIB1 messages so that UEs can obtain basic network parameters for camping on and accessing a cell. Network periodic broadcast of SIB1 requires power consumption, especially in the case of low system load, network periodic broadcast of SIB1 causes waste of network power consumption. For the above reasons, the 3rd Generation Partnership Project (3GPP) approved the work item of NES enhancement for Release 19 at the RAN plenary, the content of which can be found in the non-patent document: RP-234065 WID: Enhancements of network energy savings for NR. This work item includes that the network can no longer periodically broadcast SIB1 when the system load is low, and the UE requests SIB1 on-demand in the idle state and the inactive state, and the network triggers the transmission of SIB1 according to the request of the UE. SUMMARY

[0003] To solve at least part of the above problems, the present application provides a method performed by a user equipment and a user equipment, which can avoid or reduce the probability of ordinary UEs reselecting to NES cells, thereby avoiding the influence of NES cells on ordinary UEs, while enabling NES UEs to correctly reselect to NES cells.

[0004] According to the present application, a method performed by a user equipment UE is provided, comprising: receiving a system message and / or a RRC dedicated message transmitted by a network; and performing cell reselection evaluation to determine candidate cells for cell reselection by means of an excluded cell list and / or a network energy saving (NES) excluded cell list contained in the system message and / or the RRC dedicated message.

[0005] Preferably, in the step of performing cell reselection evaluation, the UE judges at least one of the following conditions:

[0006] - the UE is a NES UE, or the UE has on-demand SIB1 capability, or the UE supports on-demand SIB1;

[0007] - received SIB1 request configuration of NES cell or configured with SIB1 request configuration;

[0008] - NES cell configured with SIB1 request configuration exists;

[0009] - NES exclusion cell list exists or is configured;

[0010] - NES intra-frequency exclusion cell list exists or is configured;

[0011] - NES inter-frequency exclusion cell list exists or is configured; and

[0012] - network lists for NES UE the cells to exclude,

[0013] In case at least one of the above conditions is met, the UE performs at least one of the following:

[0014] - does not consider any of the exclusion cells listed in any of the NES exclusion cell list, or NES intra-frequency exclusion cell list and / or NES inter-frequency exclusion cell list as candidate cells for cell reselection;

[0015] - does not consider any of the exclusion cells listed for NES UE as candidate cells for cell reselection; and

[0016] - ignores the exclusion cells listed in the exclusion cell list, or intra-frequency exclusion cell list and / or inter-frequency exclusion cell list.

[0017] Preferably, in the step of performing cell reselection evaluation, the UE checks at least one of the following conditions:

[0018] - UE is a NES UE, or UE has on-demand SIB1 capability, or UE supports on-demand SIB1;

[0019] - did not receive SIB1 request configuration of NES cell or is not configured with SIB1 request configuration;

[0020] - NES cell configured with SIB1 request configuration does not exist;

[0021] - NES exclusion cell list does not exist or is not configured;

[0022] - NES intra-frequency exclusion cell list does not exist or is not configured;

[0023] - NES inter-frequency exclusion cell list does not exist or is not configured;

[0024] - exclusion cell list exists or is configured;

[0025] - intra-frequency exclusion cell list exists or is configured;

[0026] - an inter-frequency exclusion cell list is present or configured;

[0027] - the network does not list cells to exclude for the NES UE; and

[0028] - the first indication information is set to TRUE, or the first indication information is included in the system information and / or RRC dedicated message,

[0029] In case at least one of the above conditions is met, the UE performs at least one of the following:

[0030] - applies the exclusion cell list;

[0031] - applies the intra-frequency exclusion cell list;

[0032] - applies the inter-frequency exclusion cell list;

[0033] - does not consider any of the exclusion cells listed in any exclusion cell list, or the intra-frequency exclusion cell list and / or the inter-frequency exclusion cell list, as candidate cells for cell reselection; and

[0034] - does not consider any of the listed exclusion cells as candidate cells for cell reselection,

[0035] wherein the first indication information indicates whether the NES UE applies the exclusion cell list in case the NES exclusion cell list is not present, and / or indicates whether the NES UE applies the intra-frequency exclusion cell list in case the NES intra-frequency exclusion cell list is not present, and / or indicates whether the NES UE applies the inter-frequency exclusion cell list in case the NES inter-frequency exclusion cell list is not present.

[0036] Further, according to the present application, a method performed by a user equipment, UE, is proposed, comprising receiving a system information and / or a RRC dedicated message transmitted by a network, and performing a cell reselection evaluation using configuration parameters included in the system information and / or the RRC dedicated message.

[0037] Preferably, in the step of performing the cell reselection evaluation, the UE judges at least one of the following conditions:

[0038] - the UE is a network energy saving, NES, UE, or the UE has on-demand SIB1 capability, or the UE supports on-demand SIB1;

[0039] - the UE has received or is configured with a SIB1 request configuration for NES cells;

[0040] - there is a NES cell configured with a SIB1 request configuration;

[0041] - the NES cell reselection priority exists or is configured; and

[0042] - the NES cell reselection sub-priority exists or is configured,

[0043] In case at least one of the above conditions is met, the UE performs at least one of the following:

[0044] - applies the NES cell reselection priority;

[0045] - applies the NES cell reselection sub-priority;

[0046] - ignores the cell reselection priority; and

[0047] - ignores the cell reselection sub-priority.

[0048] Preferably, in the step of performing cell reselection evaluation, the UE judges at least one of the following conditions:

[0049] - the UE is a network energy saving, NES, UE, or the UE has on-demand SIB1 capability, or the UE supports on-demand SIB1;

[0050] - the UE has not received a SIB1 request configuration for NES cell or is not configured with a SIB1 request configuration;

[0051] - there is no NES cell configured with a SIB1 request configuration;

[0052] - the NES cell reselection priority does not exist or is not configured;

[0053] - the NES cell reselection sub-priority does not exist or is not configured;

[0054] - the cell reselection priority exists or is configured;

[0055] - the cell reselection sub-priority exists or is configured;

[0056] - the UE has not received a dedicated cell reselection priority or has not been provided with a cell reselection priority in a RRC dedicated message;

[0057] - the UE has not received a dedicated cell reselection sub-priority or has not been provided with a cell reselection sub-priority in a RRC dedicated message; and

[0058] - the second indication information is set to TRUE or the second indication information is included in the system information and / or RRC dedicated message,

[0059] In case at least one of the above conditions is met, the UE performs at least one of the following:

[0060] - apply a cell reselection priority;

[0061] - apply a cell reselection sub-priority; and

[0062] - consider the cell reselection priority of the corresponding carrier frequency as the lowest cell reselection priority,

[0063] wherein the second indication information indicates whether the NES UE applies a cell reselection priority in the absence of a NES cell reselection priority, and / or indicates whether the NES UE applies a cell reselection sub-priority in the absence of a NES cell reselection sub-priority.

[0064] Further, according to the present application, a method performed by a user equipment, UE, is proposed, comprising: receiving a system message and / or a RRC dedicated message transmitted by a network; and determining a cell reselection priority of a network energy saving, NES, cell, performing a cell reselection evaluation.

[0065] Preferably, in the step of performing a cell reselection evaluation, the UE judges at least one of the following conditions:

[0066] - the UE is a NES UE, or the UE has an on-demand SIB1 capability, or the UE supports on-demand SIB1;

[0067] - a SIB1 request configuration of the NES cell is received or the UE is configured with a SIB1 request configuration;

[0068] - there is a NES cell configured with a SIB1 request configuration; and

[0069] - the NES cell is the best cell, or the best cell is the NES cell,

[0070] In the case that at least one of the above conditions is met, the UE performs at least one of the following operations:

[0071] - considers the NES cell as the highest priority;

[0072] - considers the NES cell as having the same priority as the serving cell or the serving frequency;

[0073] - considers the priority of the NES cell as not lower than the priority of the serving cell or the serving frequency;

[0074] - considers the carrier frequency of the NES cell as the highest priority;

[0075] - considers the carrier frequency of the NES cell as having the same priority as the serving cell or the serving frequency; and

[0076] - consider that the priority of the carrier frequency on which the NES cell is located is not lower than the priority of the frequency on which the serving cell is located or the serving frequency.

[0077] In addition, according to the present application, a user equipment is provided, comprising: a processor; and a memory storing instructions, wherein the instructions, when executed by the processor, perform the method described above.

[0078] According to the present application, the common UE can be prevented from reselecting to the NES cell, or the probability of the common UE reselecting to the NES cell is reduced, thereby avoiding the influence of the NES cell on the common UE, while enabling the NES UE to correctly reselect to the NES cell BRIEF DESCRIPTION OF DRAWINGS

[0079] Fig. 1 is a schematic diagram of steps performed by a UE according to one or more embodiments.

[0080] Fig. 2 is another schematic diagram of steps performed by a UE according to one or more embodiments.

[0081] Fig. 3 is yet another schematic diagram of steps performed by a UE according to one or more embodiments.

[0082] Fig. 4 is still another schematic diagram of steps performed by a UE according to one or more embodiments.

[0083] Fig. 5 is a schematic diagram of a user equipment UE according to the present application. DETAILED DESCRIPTION

[0084] The present application will now be described in detail with reference to the drawings and specific embodiments. It should be noted that the present application should not be limited to the specific embodiments described below. In addition, detailed descriptions of well-known technology related to the present application are omitted to prevent obscuring the present application.

[0085] Some terms related to the present application are described below, and the specific meanings of the terms are described in the latest 3GPP standard specification,

[0086] UE: User Equipment

[0087] NR: New Radio

[0088] MAC: Medium Access Control

[0089] MAC CE: MAC control element

[0090] RRC: Radio Resource Control

[0091] RRC_CONNECTED: RRC connected state

[0092] RRC_INACTIVE: RRC inactive state

[0093] RRC_IDLE: RRC idle state

[0094] RAN: Radio Access Network

[0095] PDCCH: Physical downlink control channel

[0096] PUCCH: Physical Uplink Control Channel

[0097] PUSCH: Physical Uplink Shared Channel

[0098] PRACH: Physical Random Access Channel

[0099] PBCH: Physical broadcast channel

[0100] SFN: System Frame Number

[0101] PDU: Protocol Data Unit

[0102] SSB: SS / PBCH block

[0103] DCI: Downlink Control Information

[0104] RNTI: Radio Network Temporary Identifier

[0105] C-RNTI: Cell RNTI

[0106] P-RNTI: Paging RNTI

[0107] RA-RNTI: Random Access RNTI

[0108] SI-RNTI: System Information RNTI

[0109] RSRP: Reference Signal Received Power

[0110] RSRQ: Reference Signal Received Quality

[0111] SpCell: Special Cell, including PCell and PSCell

[0112] DC: Dual Connectivity

[0113] MCG: Master Cell Group

[0114] SCG: Secondary Cell Group

[0115] PCell: Primary Cell

[0116] PSCell: Primary SCG Cell

[0117] MIB: Master Information Block

[0118] DRX: Discontinuous Reception

[0119] SIB: System Information Block

[0120] gNB: the next Generation Node B

[0121] RLF: Radio Link Failure

[0122] SN: Sequence Number

[0123] CN: Core Network

[0124] SR: Scheduling Request

[0125] UL-SCH: Uplink Shared Channel

[0126] WUS: wake up signal

[0127] NES: network energy saving

[0128] OSI: Other System Information

[0129] SI: System Information

[0130] ETWS: Earthquake and Tsunami Warning System

[0131] CMAS: Commercial Mobile Alert Service

[0132] CGI: Cell Global Identifier

[0133] In the present application, network (network or NW), base station (base station or gNB or eNB) and RAN can be used interchangeably, and the network can be a long term evolution (LTE) network, a new radio access technology (NewRAT, NR) network, an enhanced long term evolution (eLTE) network, or other networks defined in subsequent evolution versions of 3GPP.

[0134] In the present application, user equipment (UE) can refer to a device supporting network energy saving, a device supporting enhanced network energy saving, a device with (enhanced) network energy saving capability, a device supporting on-demand SIB1, a device with on-demand SIB1 capability, a device with SIB1 request capability, or other types of NR devices or LTE devices.

[0135] In the present application, “feedback”, “submit”, “report”, “send”, “transmit”, “inform”, “indicate”, “provide” can be used interchangeably.

[0136] In the present application, the terms "use", "be available", "apply", "implement", "enable", "active", "perform", "do" and the like can be used interchangeably.

[0137] In the present application, the terms "associate", "correspond", "map" can be used interchangeably.

[0138] In the present application, the terms "receive", "detection", "monitor", "acquire", "derive" can be used interchangeably.

[0139] In the present application, the terms "notBroadcasting" and "on-demand" can be used interchangeably; the terms "broadcasting" and "not on-demand" can be used interchangeably.

[0140] In the present application, the term "SIB1 request configuration" can also be expressed as (or contain) "UL WUS configuration", and / or "(proprietary) PRACH configuration".

[0141] In the present application, the terms "message" and "signalling" can be used interchangeably.

[0142] In the present application, the terms "priority" and "cell reselection priority" can be used interchangeably.

[0143] In the present application, the terms "NES" and "on-demand SIB1" can be used interchangeably.

[0144] It should be noted that in the present application, the two connected by "and", "or", "and / or" can represent different expressions of the same intention in different application scenarios, and there may be a relationship between inclusion and being included, and it may not necessarily refer to completely different content.

[0145] The related art of the present application is described below.

[0146] In the NR network, MIB and SIB1 are important system messages, and the UE needs to acquire MIB and SIB1 first in order to camp on a certain cell or initiate RRC connection in a certain cell, so as to acquire the basic network parameter information for camping or accessing the cell.

[0147] MIB is broadcasted on PBCH, SIB1 is broadcasted on PDSCH. In order to receive SIB1, UE needs to monitor PDCCH to get the scheduling information of PDSCH which carries SIB1. MIB contains the relevant parameter information to acquire SIB1. MIB contains ssb-SubcarrierOffset field, which can be used to indicate whether SIB1 of the cell is scheduled (or transmitted), the field contains 4 bits, through one or more specific values of the 4 bits, it can be indicated whether SIB1 of the cell is scheduled (or transmitted). If SIB1 of the cell is not scheduled (or transmitted), UE considers that the important system message is missing, the cell is barred, and performs cell reselection; if SIB1 of the cell is scheduled (or transmitted), UE acquires SIB1. When the cell supports on-demand SIB1, ssb-SubcarrierOffset field can be used to indicate whether SIB1 is broadcasted.

[0148] SIB1 contains the parameter information to acquire other SIB(s) except MIB and SIB1, such as period, SI window length, whether other SIB(s) is broadcasted, etc. If other SIB(s) is broadcasted, UE acquires other SIB(s) according to its own needs; if other SIB(s) is not broadcasted, in the case that UE needs the other SIB(s), UE sends system message request to network, triggering network to send the SIB(s). The specific method includes: UE sends PRACH to network to request OSI through OSI request configuration (including dedicated PRACH resource), base station sends response to UE after receiving OSI request, and UE acquires the required SIB according to SI window length after receiving the response.

[0149] UE in RRC connected state can be configured by network to perform measurement on one or more neighbor cells and report CGI report, if UE can acquire CGI information of neighbor cell, it needs to report CGI report to network.

[0150] A cell uses (enhanced) network energy saving, or a cell uses on-demand SIB1, or SIB1 of a cell is not broadcast, or a cell supports on-demand SIB1, or a cell supports (enhanced) network energy saving, the cell is called NES cell. In the present application, NES cell is just an example of name, and can be other names. For on-demand SIB1, the SIB1 request configuration of the NES cell can be sent to the UE by other cells (for example, the neighboring cell of the NES cell), and such other cells (or the neighboring cell) is called Cell A. In other words, if a cell can send the SIB1 request configuration of other cells (or neighboring cells) for the other cells (or neighboring cells), and / or the SIB1 of the cell itself is broadcast, the cell is called Cell A. In the present application, Cell A is just an example of name, and can be other names.

[0151] A UE supports enhanced network energy saving, or a UE has the capability of enhanced network energy saving, or a UE supports the way of obtaining SIB1 by requesting SIB1, or a UE supports on-demand SIB1, the UE is called NES UE.

[0152] The UE obtains the SIB1 request configuration of the NES cell in Cell A, wherein the SIB1 request configuration can include but is not limited to: PRACH sequence (s), PRACH resource (s). When the UE reselects to the NES cell from Cell A, the UE initiates a random access procedure in the NES cell to request SIB1 using the SIB1 request configuration. After receiving the confirmation of the SIB1 request, the UE obtains SIB1 in the NES cell.

[0153] In Cell A, there can be both normal UEs and NES UEs. For normal UEs, if the cell reselection is to the NES cell, the SIB1 can not be obtained in time and the NES cell is considered to be prohibited, so the UE has to continue to initiate cell reselection in order to reselect to other cells, which wastes the power consumption of the UE and affects the performance of the UE. For NES UEs, after reselecting to the NES cell, SIB1 can be obtained through the way of SIB1 request, so that the NES UE can normally camp in the NES cell. Therefore, for normal UEs and NES UEs, different methods should be used in cell reselection processing. The present application studies the method of cell reselection for NES UEs, avoids the normal UEs reselecting to the NES cell, or reduces the probability of the normal UEs reselecting to the NES cell, so as to avoid the influence of the NES cell on the normal UEs, and at the same time, the NES UEs can correctly reselect to the NES cell.

[0154] In each of the following embodiments, the "SIB1 broadcast status indication information" and the "SIB1 on-demand status indication information" can be used interchangeably.

[0155] In each of the following embodiments, the same noun can represent the same meaning, and the same parameter name can represent the same meaning.

[0156] It is self-evident that the present application also includes other implementation methods not mentioned herein, which can achieve other effects not mentioned herein.

[0157] In the following, several embodiments of the present application for the above problems are described in detail.

[0158] Embodiments

[0159] Optionally, a cell adopts / supports (enhanced) network energy saving, or a cell adopts the on-demand SIB1 mode to transmit SIB1, or the SIB1 of a cell is not broadcast but sent on demand, or a cell supports on-demand SIB1, then the cell is called a NES cell. In the present application, the NES cell is just an example of name, and can also be other names. For on-demand SIB1, the SIB1 request configuration of the NES cell can be sent to the UE by other cells (such as the neighboring cell of the NES cell), and such other cells (or the neighboring cell) are called cell A. In other words, if a cell can send the SIB1 request configuration of other cells (or neighboring cells) for other cells (or neighboring cells), and / or the SIB1 of the cell itself is broadcast, then the cell is called cell A. One cell A can send SIB1 request configuration for one or more NES cells. The SIB1 request configuration of one NES cell can be sent to the UE by one or more cells A. In the present application, "NES cell", "cell adopting on-demand SIB1", and "cell supporting on-demand SIB1" can be used interchangeably.

[0160] Optionally, a UE supports enhanced network energy saving, or a UE has the capability of enhanced network energy saving, or a UE supports obtaining SIB1 by requesting SIB1, or a UE supports on-demand SIB1, then the UE is called a NES UE. In the present application, "NES UE" and "UE supporting on-demand SIB1" can be used interchangeably.

[0161] FIG. 1 is a schematic diagram of steps performed by a UE according to one or more embodiments. The UE can perform one or more steps in FIG. 1. FIG. 1 includes steps S101-S102.

[0162] Optionally, at step S101, the UE receives a system message and / or a RRC dedicated message (e.g. RRCReconfiguration message or RRCRelease message) sent by the network. Optionally, at this time, the UE is camping on the cell A, and the system message and / or the RRC dedicated message is received from the cell A.

[0163] Optionally, the system message and / or the RRC dedicated message contains SIB1 request configuration(s) of the NES cell(s). There can be one or more SIB1 request configurations.

[0164] Optionally, the SIB1 request configuration contains, but not limited to, the following:

[0165] Optionally, the system message and / or the RRC dedicated message contains at least one of the following:

[0166] - an intra-frequency excluded-cell list;

[0167] - an inter-frequency excluded-cell list;

[0168] - an NES intra-frequency excluded-cell list;

[0169] - an NES inter-frequency excluded-cell list;

[0170] - a first indication information.

[0171] Optionally, the intra-frequency excluded-cell list indicates to the non-NES UE to exclude the listed intra-frequency neighboring cells, and the inter-frequency excluded-cell list indicates to the non-NES UE to exclude the listed inter-frequency neighboring cells. Optionally, the intra-frequency excluded-cell list and the inter-frequency excluded-cell list are collectively referred to as the excluded-cell list. The NES intra-frequency excluded-cell list indicates to the NES UE to exclude the listed intra-frequency neighboring cells, or indicates to the NES UE to exclude the neighboring cells of the intra-frequency carrier frequency where the NES cell exists. The NES inter-frequency excluded-cell list indicates to the NES UE to exclude the listed inter-frequency neighboring cells, or indicates to the NES UE to exclude the neighboring cells of the inter-frequency carrier frequency where the NES cell exists. Optionally, the NES intra-frequency excluded-cell list and the NES inter-frequency excluded-cell list can be replaced by the NES excluded-cell list, i.e. without distinguishing intra-frequency or inter-frequency, the NES excluded-cell list indicates to the NES UE to exclude the listed neighboring cells, or indicates to the NES UE to exclude the neighboring cells of the carrier frequency where the NES cell exists. Alternatively, the NES intra-frequency excluded-cell list and the NES inter-frequency excluded-cell list are collectively referred to as the NES excluded-cell list.

[0172] Optionally, the intra-frequency exclusion cell list and the inter-frequency cell list can be carried in different system messages, and the NES intra-frequency exclusion cell list and the NES inter-frequency cell list can be carried in different system messages.

[0173] Optionally, the first indication information indicates whether the NES UE applies the exclusion cell list in the case that the NES exclusion cell list is absent, and / or indicates whether the NES UE applies the intra-frequency exclusion cell list in the case that the NES intra-frequency exclusion cell list is absent, and / or indicates whether the NES UE applies the inter-frequency exclusion cell list in the case that the NES inter-frequency exclusion cell list is absent.

[0174] Optionally, in step S102, the UE performs cell reselection evaluation, and determines the candidate cell for cell reselection by the exclusion cell list and / or the NES exclusion cell list.

[0175] Optionally, the UE judges at least one of the following conditions:

[0176] - the UE is a NES UE, or the UE has on-demand SIB1 capability, or the UE supports on-demand SIB1;

[0177] - the SIB1 request configuration of the NES cell is received (or is configured);

[0178] - the NES cell exists (is configured with the SIB1 request configuration);

[0179] - the NES exclusion cell list exists (or is configured);

[0180] - the NES intra-frequency exclusion cell list exists (or is configured);

[0181] - the NES inter-frequency exclusion cell list exists (or is configured);

[0182] - the network lists the cells to be excluded for the NES UE.

[0183] Optionally, in the case that at least one of the above conditions is met, the UE performs at least one of the following operations:

[0184] - does not consider the exclusion cell listed in the (any) NES exclusion cell list (or: the NES intra-frequency exclusion cell list and / or the NES inter-frequency exclusion cell list) as a candidate (cell) for cell reselection;

[0185] - does not consider the exclusion cell listed for the NES UE as a candidate (cell) for cell reselection;

[0186] - ignore the excluded cells listed in the list of excluded cells (or: the list of intra-frequency excluded cells and / or the list of inter-frequency excluded cells).

[0187] Optionally, the list of NES excluded cells is empty (dummy) indicating that there is no cell that needs to be excluded for the NES UE; the list of NES intra-frequency excluded cells is empty (dummy) indicating that there is no intra-frequency cell that needs to be excluded for the NES UE; the list of NES inter-frequency excluded cells is empty (dummy) indicating that there is no inter-frequency cell that needs to be excluded for the NES UE.

[0188] Optionally, the UE judges at least one of the following conditions:

[0189] - the UE is a NES UE, or the UE has on-demand SIB1 capability, or the UE supports on-demand SIB1;

[0190] - no SIB1 request configuration is received (or not configured) for the NES cell;

[0191] - no (configured SIB1 request configuration) NES cell exists;

[0192] - no list of NES excluded cells exists (or is configured);

[0193] - no list of NES intra-frequency excluded cells exists (or is configured);

[0194] - no list of NES inter-frequency excluded cells exists (or is configured);

[0195] - a list of excluded cells exists (or is configured);

[0196] - a list of intra-frequency excluded cells exists (or is configured);

[0197] - a list of inter-frequency excluded cells exists (or is configured);

[0198] - the network does not list cells to be excluded for the NES UE;

[0199] - the first indication information is set to TRUE, or the first indication information is contained in the system message and / or the RRC dedicated message.

[0200] Optionally, in case at least one of the above conditions is met, the UE performs at least one of the following operations:

[0201] - apply the list of excluded cells;

[0202] - apply the list of intra-frequency excluded cells;

[0203] - apply the list of inter-frequency excluded cells;

[0204] - not considering the listed excluded cell(s) in the (any) excluded cell list (or: the intra-frequency excluded cell list and / or the inter-frequency excluded cell list) as candidate(s) for cell reselection;

[0205] - not considering the listed excluded cell(s) as candidate(s) for cell reselection.

[0206] FIG. 2 is a schematic diagram of another step performed by a UE according to one or more embodiments. The UE can perform one or more steps in FIG. 2. FIG. 2 includes steps S201-S202.

[0207] Optionally, in step S201, the UE receives a system message and / or an RRC dedicated message (e.g., RRCReconfiguration message or RRCRelease message) sent by the network. At this time, the UE is camping on cell A and receives the system message and / or the RRC dedicated message from cell A.

[0208] Optionally, the system message and / or the RRC dedicated message contains SIB1 request configuration(s) of the NES cell(s). There can be one or more SIB1 request configurations.

[0209] Optionally, the SIB1 request configuration contains, but is not limited to, the following: PRACH configuration (e.g., PRACH sequence, PRACH resource) for SIB1 request, cell identity.

[0210] Optionally, the system message and / or the RRC dedicated message contains at least one of the following configuration parameters:

[0211] - cell reselection priority;

[0212] - cell reselection sub-priority;

[0213] - NES cell reselection priority;

[0214] - NES cell reselection sub-priority;

[0215] - second indication information.

[0216] Optionally, the at least one of the above configuration parameters is contained in inter-frequency carrier frequency information (InterFreqCarrierFreqInfo) contained in the system message. Optionally, the at least one of the above configuration parameters is contained in serving frequency cell reselection information contained in the system message. Optionally, the at least one of the above configuration parameters is contained in NR frequency priority contained in the RRC dedicated message.

[0217] Optionally, the "cell reselection priority" contained in the RRC dedicated message can also be referred to as "dedicated cell reselection priority", the "cell reselection sub-priority" contained in the RRC dedicated message can also be referred to as "dedicated cell reselection sub-priority", the "NES cell reselection priority" contained in the RRC dedicated message can also be referred to as "dedicated NES cell reselection priority", the "NES cell reselection sub-priority" contained in the RRC dedicated message can also be referred to as "dedicated NES cell reselection sub-priority".

[0218] Optionally, the cell reselection priority indicates an absolute priority of a carrier frequency for a cell reselection procedure. The cell reselection sub-priority indicates a fraction. The value of the cell reselection sub-priority and the value of the cell reselection priority add up to an absolute priority of the carrier frequency. The NES cell reselection priority indicates an absolute priority of a carrier frequency for a NES UE, or indicates an absolute priority of a carrier frequency on which a NES cell exists, for a cell reselection procedure. The NES cell reselection sub-priority indicates a fraction for a NES UE, or indicates a fraction for a carrier frequency on which a NES cell exists. The value of the NES cell reselection sub-priority and the value of the NES cell reselection priority add up to an absolute priority of the carrier frequency for the NES UE, or add up to an absolute priority of the carrier frequency on which the NES cell exists.

[0219] Optionally, the second indication information indicates whether the NES UE applies the cell reselection priority in the absence of the NES cell reselection priority, and / or indicates whether the NES UE applies the cell reselection sub-priority in the absence of the NES cell reselection sub-priority.

[0220] Optionally, in step S202, the UE determines how to apply the configuration parameters in step S201, and performs a cell reselection evaluation.

[0221] Optionally, if the NES cell reselection priority is provided in the dedicated RRC message, the UE ignores the NES cell reselection priority in the system message.

[0222] Optionally, the UE determines at least one of the following conditions:

[0223] - the UE is a NES UE, or the UE has on-demand SIB1 capability, or the UE supports on-demand SIB1;

[0224] - the UE has received (or is configured with) SIB1 request configuration of a NES cell;

[0225] - there exists a NES cell (configured with SIB1 request configuration);

[0226] - NES cell reselection priority is present (or configured);

[0227] - NES cell reselection sub-priority is present (or configured).

[0228] Optionally, in case at least one of the above conditions is met, the UE performs at least one of the following:

[0229] - applies the NES cell reselection priority;

[0230] - applies the NES cell reselection sub-priority;

[0231] - ignores the cell reselection priority;

[0232] - ignores the cell reselection sub-priority.

[0233] Optionally, the UE determines at least one of the following conditions:

[0234] - the UE is a NES UE, or the UE has on-demand SIB1 capability, or the UE supports on-demand SIB1;

[0235] - no SIB1 request configuration for NES cell is received (or not configured);

[0236] - no NES cell is present (configured with SIB1 request configuration);

[0237] - NES cell reselection priority is not present (or not configured);

[0238] - NES cell reselection sub-priority is not present (or not configured);

[0239] - cell reselection priority is present (or configured);

[0240] - cell reselection sub-priority is present (or configured);

[0241] - no dedicated cell reselection priority is received, or no cell reselection priority is provided in RRC dedicated message;

[0242] - no dedicated cell reselection sub-priority is received, or no cell reselection sub-priority is provided in RRC dedicated message;

[0243] - the second indication information is set to TRUE, or the second indication information is included in the system information and / or RRC dedicated message.

[0244] Optionally, in case at least one of the above conditions is met, the UE performs at least one of the following:

[0245] - apply a cell reselection priority;

[0246] - apply a cell reselection sub-priority;

[0247] - consider the (cell reselection) priority of the corresponding carrier frequency as the lowest (cell reselection) priority.

[0248] Figure 3 is a schematic diagram of further steps performed by a UE according to one or more embodiments. The UE can perform one or more steps in Figure 3. Figure 3 comprises steps S301-S302.

[0249] Optionally, step S301 is the same as step S201.

[0250] Optionally, at step S302, the UE determines the cell reselection priority of the NES cell and performs the cell reselection evaluation.

[0251] Optionally, the UE determines at least one of the following conditions:

[0252] - the UE is a NES UE, or the UE has on-demand SIB1 capability, or the UE supports on-demand SIB1;

[0253] - the UE has received (or is configured with) SIB1 request configuration for the NES cell;

[0254] - there is (or is configured with) the NES cell;

[0255] - the NES cell is the best cell, or the best cell is the NES cell.

[0256] Optionally, in case at least one of the above conditions is met, the UE performs at least one of the following operations:

[0257] - considers the NES cell as the highest priority;

[0258] - considers the NES cell as having the same priority as the frequency (or serving frequency) of the serving cell;

[0259] - considers the priority of the NES cell as not lower than (or equal to or higher than) the priority of the frequency (or serving frequency) of the serving cell;

[0260] - considers the carrier frequency of the NES cell as the highest priority;

[0261] - considers the carrier frequency of the NES cell as having the same priority as the frequency (or serving frequency) of the serving cell;

[0262] - consider that the priority of the carrier frequency where the NES cell is located is not lower than (equal to or higher than) the priority of the frequency (or serving frequency) where the serving cell is located.

[0263] Figure 4 is a schematic diagram of further steps performed by a UE according to one or more embodiments. The UE can perform one or more steps in Figure 4. Figure 4 includes steps S401-S402.

[0264] Optionally, the only difference between step S401 and step S101 is that, optionally, the measurement reporting configuration is further included in the system message and / or RRC dedicated message. The measurement reporting configuration includes the CGI reporting information, which includes the cell information for which the CGI is required to be reported, and the reporting type in the measurement reporting configuration is set to report CGI. The other descriptions of step S401 are the same as step S101, and are not repeated here.

[0265] Optionally, in step S402, the UE performs measurement.

[0266] Optionally, the UE judges at least one of the following conditions:

[0267] - the reporting type is set to report CGI;

[0268] - the cell indicated by the CGI reporting (e.g. the cell information for which the CGI is required to be reported) is periodically broadcasting SIB1;

[0269] - the cell indicated by the CGI reporting is not a NES cell;

[0270] - the cell indicated by the CGI reporting has not received on-demand SIB1 configuration;

[0271] - the SIB1 of the cell indicated by the CGI reporting is not transmitted in on-demand manner.

[0272] Optionally, in the case where at least one of the above conditions is met, the UE attempts to acquire the SIB1 of the cell (i.e. the cell indicated by the CGI reporting in the above conditions).

[0273] The judgment and operation in each step in the embodiments are independent of the execution order, i.e. the execution order of the judgment and operation can be changed, unless otherwise specified.

[0274] FIG. 5 is a brief block diagram of a user equipment (UE) to which the present application pertains. As shown in FIG. 5, the user equipment (UE) 500 includes a processor 501 and a memory 502. The processor 501 can include, for example, a microprocessor, a microcontroller, an embedded processor, or the like. The memory 502 can include, for example, a volatile memory (such as a random access memory (RAM)), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other storage media. The memory 502 stores program instructions. The program instructions, when executed by the processor 501, can perform the above-described method executed by the user equipment in detail.

[0275] A program running on the apparatus according to the present application can be a program for causing a computer to implement the functions of the embodiments of the present application by controlling a central processing unit (CPU). The program or information processed by the program can be temporarily stored in a volatile memory (such as a random access memory (RAM)), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other storage media.

[0276] A program for implementing the functions of the embodiments of the present application can be recorded on a computer-readable recording medium. The corresponding functions can be implemented by causing a computer system to read the program recorded on the recording medium and execute the program. The so-called "computer system" herein can be a computer system embedded in the apparatus and can include an operating system or hardware (such as a peripheral device). The "computer-readable recording medium" can be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a short-time dynamic storage program recording medium, or any other computer-readable recording medium.

[0277] The various features or functional modules of the apparatus used in the above-described embodiments can be implemented or executed by a circuit (for example, a single-chip or multi-chip integrated circuit). The circuit designed to perform the functions described in the present specification can include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, or any combination thereof. The general-purpose processor can be a microprocessor, but can also be any existing processor, controller, microcontroller, or state machine. The above-described circuit can be a digital circuit, but can also be an analog circuit. In the event that new integrated circuit technologies emerge as a result of advances in semiconductor technology, one or more embodiments of the present application can also be implemented using these new integrated circuit technologies.

[0278] Furthermore, the present application is not limited to the above-described embodiments. Although various examples of the embodiments have been described, the present application is not limited thereto. Stationary or non-mobile electronic devices installed indoors or outdoors can be used as terminal devices or communication devices, such as AV devices, kitchen devices, cleaning devices, air conditioners, office devices, vending machines, and other home appliances.

[0279] As described above, the embodiments of the present application have been described in detail with reference to the accompanying drawings. However, the specific configuration is not limited to the above-described embodiments, and the present application includes any design modification without departing from the gist of the present application. In addition, various modifications can be made to the present application within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present application. Furthermore, components described in the above-described embodiments having the same effect can be substituted for each other.

Claims

1. A method performed by a user equipment (UE), comprising: receiving a system information and / or a RRC dedicated message transmitted by a network; and performing a cell reselection evaluation to determine candidate cells for cell reselection based on an excluded cell list and / or a network energy saving (NES) excluded cell list contained in the system information and / or the RRC dedicated message. 2.The method of claim 1, wherein, in the step of performing the cell reselection evaluation, the UE determines at least one of the following conditions: - the UE is a NES UE, or the UE has an on-demand SIB1 capability, or the UE supports on-demand SIB1; - a SIB1 request configuration of a NES cell is received or configured; - there is a NES cell configured with a SIB1 request configuration; - there is a NES excluded cell list or configured; - there is a NES intra-frequency excluded cell list or configured; - there is a NES inter-frequency excluded cell list or configured; and - the network lists cells to be excluded for NES UEs, in case at least one of the above conditions is met, the UE performs at least one of the following operations: - does not consider any excluded cell listed in the NES excluded cell list, or the NES intra-frequency excluded cell list and / or the NES inter-frequency excluded cell list as a candidate cell for cell reselection; - does not consider any excluded cell listed for NES UEs as a candidate cell for cell reselection; and - ignores the excluded cells listed in the excluded cell list, or the intra-frequency excluded cell list and / or the inter-frequency excluded cell list. 3.The method of claim 1, wherein, in the step of performing the cell reselection evaluation, the UE determines at least one of the following conditions: - the UE is a NES UE, or the UE has an on-demand SIB1 capability, or the UE supports on-demand SIB1; - there is no SIB1 request configuration of a NES cell received or configured; - there is no NES cell configured with a SIB1 request configuration; - there is no NES excluded cell list or configured; - there is no NES intra-frequency excluded cell list or configured; - there is no NES inter-frequency excluded cell list or configured; - there is an excluded cell list or configured; - there is an intra-frequency excluded cell list or configured; - there is an inter-frequency excluded cell list or configured; - the network does not list cells to be excluded for NES UEs; and - a first indication information is set to TRUE or contained in the system information and / or the RRC dedicated message, in case at least one of the above conditions is met, the UE performs at least one of the following operations: - applies the excluded cell list; - applies the intra-frequency excluded cell list; - applies the inter-frequency excluded cell list; - does not consider any excluded cell listed in the excluded cell list, or the intra-frequency excluded cell list and / or the inter-frequency excluded cell list as a candidate cell for cell reselection; and - does not consider any listed excluded cell as a candidate cell for cell reselection, ​ ​ ​ ​ The first indication information indicates whether the NES UE applies the exclusion cell list in the case that the NES exclusion cell list does not exist, and / or indicates whether the NES UE applies the intra-frequency exclusion cell list in the case that the NES intra-frequency exclusion cell list does not exist, and / or indicates whether the NES UE applies the inter-frequency exclusion cell list in the case that the NES inter-frequency exclusion cell list does not exist.

4. A method performed by a user equipment (UE), comprising: receiving a system message and / or a RRC dedicated message sent by a network; and performing cell reselection evaluation with configuration parameters contained in the system message and / or the RRC dedicated message.

5. The method of claim 4, wherein, in the step of performing cell reselection evaluation, the UE determines at least one of the following conditions: - the UE is a network energy saving (NES) UE, or the UE has on-demand SIB1 capability, or the UE supports on-demand SIB1; - the UE has received SIB1 request configuration of a NES cell or is configured with SIB1 request configuration of a NES cell; - there exists a NES cell configured with SIB1 request configuration; - NES cell reselection priority exists or is configured; and - NES cell reselection sub-priority exists or is configured, in the case that at least one of the above conditions is met, the UE performs at least one of the following operations: - applies NES cell reselection priority; - applies NES cell reselection sub-priority; - ignores cell reselection priority; and - ignores cell reselection sub-priority.

6. The method of claim 4, wherein, in the step of performing cell reselection evaluation, the UE determines at least one of the following conditions: - the UE is a network energy saving (NES) UE, or the UE has on-demand SIB1 capability, or the UE supports on-demand SIB1; - the UE has not received SIB1 request configuration of a NES cell or is not configured with SIB1 request configuration of a NES cell; - there does not exist a NES cell configured with SIB1 request configuration; - NES cell reselection priority does not exist or is not configured; - NES cell reselection sub-priority does not exist or is not configured; - cell reselection priority exists or is configured; - cell reselection sub-priority exists or is configured; - the UE has not received dedicated cell reselection priority, or the UE has not been provided with cell reselection priority in a RRC dedicated message; - the UE has not received dedicated cell reselection sub-priority, or the UE has not been provided with cell reselection sub-priority in a RRC dedicated message; and - second indication information is set to TRUE, or second indication information is contained in the system message and / or the RRC dedicated message, in the case that at least one of the above conditions is met, the UE performs at least one of the following operations: - applies cell reselection priority; - applies cell reselection sub-priority; and - considers the cell reselection priority of the corresponding carrier frequency as the lowest cell reselection priority, ​ The second indication information indicates whether the NES UE applies the cell reselection priority in the absence of the NES cell reselection priority, and / or indicates whether the NES UE applies the cell reselection sub-priority in the absence of the NES cell reselection sub-priority.

7. A method performed by a user equipment (UE), comprising: receiving a system message and / or a RRC dedicated message sent by a network; and determining a cell reselection priority of a network energy saving (NES) cell, and performing a cell reselection evaluation.

8. The method of claim 7, wherein, in the step of performing the cell reselection evaluation, the UE judges at least one of the following conditions: - the UE is a NES UE, or the UE has an on-demand SIB1 capability, or the UE supports on-demand SIB1; - a SIB1 request configuration of the NES cell is received or the UE is configured with the SIB1 request configuration; - there is a NES cell configured with the SIB1 request configuration; and - the NES cell is the best cell, or the best cell is the NES cell, in the case that at least one of the above conditions is met, the UE performs at least one of the following operations: - considers the NES cell as the highest priority; - considers the NES cell as having the same priority as a serving cell or a serving frequency; - considers the NES cell as having a priority no lower than the serving cell or the serving frequency; - considers a carrier frequency of the NES cell as the highest priority; - considers the carrier frequency of the NES cell as having the same priority as the serving cell or the serving frequency; and - considers the carrier frequency of the NES cell as having a priority no lower than the serving cell or the serving frequency.

9. A user equipment (UE), comprising: a processor; and a memory storing instructions, wherein the instructions, when executed by the processor, perform the method of any one of claims 1 to 8. ​ ​

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