Wireless communication method and apparatus therefor

Abstract

A wireless communication method for use in a wireless terminal is disclosed. The method comprises receiving a system information block of an anchor cell from a wireless network node, where the system information block of the anchor cell comprises a radio resource configuration of at least one non-anchor cell; selecting one of an anchor cell or at least one non-anchor cell based on the radio resource configuration; and performing a random access procedure in the selected cell.

Description

Technical Field

[0001] This document is primarily aimed at wireless communications, and in particular 5G communications. Background Art

[0002] Network energy saving is of great significance for environmental sustainability, reducing environmental impact (greenhouse gas emissions) and saving operating costs, and has become a key part of network operators' operating expenses. In NR (new radio) networks, most of the energy consumption comes from the radio access network and especially from the active antenna unit (AAU) or remote radio unit (RRU), especially the power amplifier (PA).

[0003] Therefore, it is necessary to discuss how to reduce the power consumption of radio access networks. Summary of the invention

[0004] The present invention relates to a method, system and device for SI (system information) configuration, and in particular to a method, system and device for SI configuration, PRACH (physical random access channel) resource selection and / or traffic carrier / cell determination.

[0005] The present disclosure relates to a wireless communication method for use in a wireless terminal. The method comprises:

[0006] receiving a system information block of an anchor cell from a radio network node, wherein the system information block of the anchor cell includes a radio resource configuration for at least one non-anchor cell,

[0007] selecting one of an anchor cell or at least one non-anchor cell based on the radio resource configuration, and

[0008] A random access procedure is performed in the selected cell.

[0009] Various embodiments may preferably implement the following features:

[0010] Preferably, performing a random access procedure in the selected cell includes:

[0011] A random access preamble is transmitted to the radio network node over the selected cell.

[0012] Preferably, the radio resource configuration for a first non-anchor cell among the at least one non-anchor cell includes at least one of the following: a physical cell identifier of the first non-anchor cell, uplink frequency information of the first non-anchor cell, downlink frequency information of the first non-anchor cell, a physical random access channel (PRACH) resource configuration of the first non-anchor cell, a common search space configuration of the first non-anchor cell, a reference signal received power (RSRP) threshold of the first non-anchor cell, a weight or indication for a random access procedure on the first non-anchor cell, or at least one downlink reference signal of the first non-anchor cell.

[0013] Preferably, if the radio resource configuration does not include a physical cell identity of a first non-anchor cell among the at least one non-anchor cell, the anchor cell has the same physical cell identity as the first non-anchor cell among the at least one non-anchor cell.

[0014] Preferably, a first non-anchor cell among the at least one non-anchor cell shares at least one downlink reference signal with the anchor cell or a second non-anchor cell among the at least one non-anchor cell.

[0015] Preferably, selecting one of the anchor cell or the at least one non-anchor cell based on the radio resource configuration comprises: selecting one of the anchor cell or the at least one non-anchor cell based on a weight of each of the anchor cell and the at least one non-anchor cell for a random access procedure.

[0016] Preferably, wherein selecting one of the anchor cell or the at least one non-anchor cell based on the radio resource configuration comprises: selecting the anchor cell or the at least one non-anchor cell based on at least one of a first weight of the anchor cell for a random access procedure or a second weight of the at least one non-anchor cell for a random access procedure, and if the at least one non-anchor cell is selected, selecting one of the at least one non-anchor cell.

[0017] Preferably, the radio resource configuration includes an indication to perform a random access procedure on a non-anchor cell, wherein selecting one of the anchor cell or the at least one non-anchor cell based on the radio resource configuration includes: selecting one of the at least one non-anchor cell.

[0018] Preferably, the radio resource configuration includes an indication to perform a random access procedure on an anchor cell or a non-anchor cell, wherein selecting one of the anchor cell or the at least one non-anchor cell based on the radio resource configuration includes: selecting one of the anchor cell or the at least one non-anchor cell.

[0019] Preferably, the reference signal received power of the selected cell is greater than or equal to a reference signal received power threshold of the selected cell.

[0020] Preferably, performing a random access procedure on the selected cell includes:

[0021] transmitting candidate cell information associated with at least one candidate cell to a radio network node in the selected cell,

[0022] receiving, from a radio network node in the selected cell, mobility information associated with one of the at least one candidate cells, and

[0023] A radio resource control response message is transmitted to the radio network node in the candidate cell associated with the mobility information.

[0024] Preferably, candidate cell information associated with at least one candidate cell is included in message 3 of the random access procedure.

[0025] Preferably, the wireless communication method further includes:

[0026] transmitting a message 3 of a random access procedure to a radio network node in the selected cell, and

[0027] A report instruction for candidate cell information is received from a radio network node.

[0028] Preferably, the wireless communication method further includes:

[0029] Handover to a candidate cell associated with the mobility information, or

[0030] The candidate cells associated with the mobility information are added as secondary cells for carrier aggregation or dual connectivity.

[0031] Preferably, the wireless communication method further comprises receiving system information for a radio resource control connection state from a radio network node in the candidate cell associated with the mobility information.

[0032] Preferably, performing the random access procedure in the selected cell comprises: transmitting, in the selected cell, to the radio network node a capability indication of supporting the random access procedure in the non-anchor cell.

[0033] Preferably, the capability indication is included in message 3, message 5 of the random access procedure, a user equipment capability information message or an uplink medium access control element.

[0034] Preferably, performing a random access procedure in the selected cell further includes:

[0035] receiving a preamble configuration of a third non-anchor cell among the at least one non-anchor cell from the radio network node, and

[0036] A random access preamble is transmitted to the radio network node in a third non-anchor cell based on the preamble configuration.

[0037] Preferably, the preamble configuration is received by or included in downlink configuration information or a radio resource control message.

[0038] Preferably, the preamble configuration includes at least one of a cell identity of the third non-anchor cell, uplink frequency information of the third non-anchor cell, or a preamble index.

[0039] The present disclosure relates to a wireless communication method for use in a wireless network node. The method comprises:

[0040] transmitting a system information block of an anchor cell to a wireless terminal, wherein the system information block of the anchor cell includes a radio resource configuration for at least one non-anchor cell, and

[0041] A random access procedure is performed with the wireless terminal in a cell selected from one of the anchor cell or at least one non-anchor cell.

[0042] Various embodiments may preferably implement the following features:

[0043] Preferably, performing a random access procedure in a cell selected from an anchor cell or at least one non-anchor cell by a wireless terminal comprises:

[0044] A random access preamble is received from a wireless terminal in a cell selected from one of an anchor cell or at least one non-anchor cell.

[0045] Preferably, the radio resource configuration for a first non-anchor cell among the at least one non-anchor cell includes at least one of the following: a physical cell identifier of the first non-anchor cell, uplink frequency information of the first non-anchor cell, downlink frequency information of the first non-anchor cell, a physical random access channel (PRACH) resource configuration of the first non-anchor cell, a common search space configuration of the first non-anchor cell, a reference signal received power (RSRP) threshold of the first non-anchor cell, a weight or indication for a random access procedure on the first non-anchor cell, or at least one downlink reference signal of the first non-anchor cell.

[0046] Preferably, if the radio resource configuration does not include a physical cell identity of a first non-anchor cell among the at least one non-anchor cell, the anchor cell has the same physical cell identity as the first non-anchor cell among the at least one non-anchor cell.

[0047] Preferably, a first non-anchor cell among the at least one non-anchor cell shares at least one downlink reference signal with the anchor cell or a second non-anchor cell among the at least one non-anchor cell.

[0048] Preferably, performing a random access procedure in the selected cell using the wireless terminal includes:

[0049] receiving candidate cell information associated with at least one candidate cell from a wireless terminal in the selected cell,

[0050] transmitting, in the selected cell, mobility information associated with one of the at least one candidate cell to the wireless terminal, and

[0051] A radio resource control response message is received from the wireless terminal in the candidate cell associated with the mobility information.

[0052] Preferably, candidate cell information associated with at least one candidate cell is included in message 3 of the random access procedure.

[0053] Preferably, the wireless communication method further includes:

[0054] receiving a message 3 of a random access procedure in a selected cell from a wireless terminal, and

[0055] A report instruction for candidate cell information is transmitted to a wireless terminal.

[0056] Preferably, the wireless communication method further comprises: transmitting system information for a radio resource control connection state to the wireless terminal in the candidate cell associated with the mobility information.

[0057] Preferably, performing the random access procedure in the selected cell with the wireless terminal comprises: receiving a capability indication of supporting the random access procedure in the non-anchor cell from the wireless terminal.

[0058] Preferably, the capability indication is included in message 3, message 5 of the random access procedure, a user equipment capability information message or an uplink medium access control element.

[0059] Preferably, performing a random access procedure in the selected cell using the wireless terminal further includes:

[0060] transmitting a preamble configuration of a third non-anchor cell of the at least one non-anchor cell to the wireless terminal, and

[0061] A random access preamble is received from a wireless terminal in a third non-anchor cell based on the preamble configuration.

[0062] Preferably, the preamble configuration is transmitted by or included in downlink configuration information or a radio resource control message.

[0063] Preferably, the preamble configuration includes at least one of a cell identifier of the third non-anchor cell, uplink frequency information of the third non-anchor cell, or a preamble index.

[0064] The present disclosure relates to a wireless communication method for use in a wireless terminal. The method comprises:

[0065] A first system information block of a serving cell is received from a radio network node, wherein the first system information block of the serving cell includes a second system information block for at least one neighbor cell.

[0066] Various embodiments may preferably implement the following features:

[0067] Preferably, the wireless communication method further comprises: performing an operation based on the second system information block.

[0068] Preferably, the first system information block includes the second system information block by including at least one of the following:

[0069] a sharing indication of common system information shared by the serving cell and at least one neighbor cell, or

[0070] An incremental indication of at least one difference between the divergent system information in the first system information block and the divergent system information in the second system information block.

[0071] The present disclosure relates to a wireless communication method for use in a wireless network node. The method comprises:

[0072] A first system information block of a serving cell is transmitted to a wireless terminal, wherein the first system information block of the serving cell includes a second system information block for at least one neighbor cell.

[0073] Various embodiments may preferably implement the following features:

[0074] Preferably, the first system information block includes the second system information block by including at least one of the following:

[0075] a sharing indication of common system information shared by the serving cell and at least one neighbor cell, or

[0076] An incremental indication of at least one difference between the divergent system information in the first system information block and the divergent system information in the second system information block.

[0077] The present disclosure relates to a wireless communication method for use in a wireless terminal. The method comprises:

[0078] receiving, from a radio network node, a system information block associated with a plurality of paging bandwidth parts (BWPs), the plurality of paging BWPs comprising an initial paging BWP and at least one additional paging BWP,

[0079] transmitting to the radio network node an indication of a capability to support monitoring of paging messages on an additional paging BWP, and

[0080] The paging message is monitored on one of the plurality of paging BWPs based on the system information block.

[0081] Various embodiments may preferably implement the following features:

[0082] Preferably, the system information block associated with the plurality of paging BWPs comprises at least one of: a physical control channel configuration for each paging BWP, a paging BWP selection weight for each paging BWP, or a paging BWP selection indication.

[0083] Preferably, monitoring a paging message on one of the plurality of paging BWPs based on a system information block comprises:

[0084] selecting a first paging BWP among a plurality of paging BWPs based on a system information block including a paging BWP selection weight for each paging BWP, and

[0085] Monitor the paging message on the first paging BWP,

[0086] The first paging BWP is the BWP with the smallest index n, satisfying:

[0087] floor(UE_ID / (N*Ns))modW <W(0)+W(1)+...+W(n)

[0088] Wherein: W(i) is the paging BWP selection weight of the paging BWP with index i, W is the total weight of the paging BWP selection weights for multiple BWPs, N is the total number of paging frames in a period of time, Ns is the number of paging occasions for the paging frame, and UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X.

[0089] Preferably, monitoring a paging message on one of the plurality of paging BWPs based on a system information block comprises:

[0090] selecting a second paging BWP among the plurality of paging BWPs based on a system information block including an initial paging BWP selection weight for the initial paging BWP and additional paging BWP selection weights for all at least one additional paging BWP, and

[0091] Monitor the paging message on the second paging BWP,

[0092] in:

[0093] The second paging BWP is the initial paging BWP if the following conditions are met:

[0094] floor(UE_ID / (N*Ns*X))≤initial paging BWP selection weight, or

[0095] UE_ID / (N*Ns*X)≤initial paging BWP selection weight, or

[0096] The second paging BWP is one of the at least one additional paging BWP and the index of the second paging BWP is equal to floor(UE_ID / (N*Ns)) mod M,

[0097] Where: N is the total number of paging frames in a period of time, Ns is the number of paging occasions for a paging frame, UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X, and M is the number of at least one additional paging BWP.

[0098] Preferably, monitoring a paging message on one of the plurality of paging BWPs based on a system information block comprises:

[0099] selecting a first additional paging BWP among the at least one additional paging BWP based on a system information block including additional paging BWP selection weights for all of the at least one additional paging BWPs, and

[0100] monitoring paging messages on the first additional paging BWP,

[0101] The index of the first additional paging BWP is equal to floor(UE_ID / (N*Ns)) mod M,

[0102] Where: N is the total number of paging frames in a period of time, Ns is the number of paging occasions for a paging frame, UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X, and M is the number of at least one additional paging BWP.

[0103] Preferably, monitoring a paging message on one of the plurality of paging BWPs based on a system information block comprises:

[0104] selecting a third paging BWP from the plurality of paging BWPs based on a system information block including a common paging BWP selection weight for all of the plurality of paging BWPs, and

[0105] Monitor the paging message on the third paging BWP,

[0106] The index of the third paging BWP is floor(UE_ID / (N*Ns))mod(M+1),

[0107] Where: N is the total number of paging frames in a period of time, Ns is the number of paging occasions for a paging frame, UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X, and M is the number of at least one additional paging BWP.

[0108] The present disclosure relates to a wireless communication method for use in a wireless network node. The method comprises:

[0109] transmitting to a wireless terminal a system information block associated with a plurality of paging bandwidth parts (BWPs), the plurality of paging BWPs comprising an initial paging BWP and at least one additional paging BWP,

[0110] receiving from the wireless terminal an indication of a capability to support monitoring of paging messages on an additional paging BWP, and

[0111] The paging message is transmitted on one of a plurality of paging BWPs based on the system information block.

[0112] Various embodiments may preferably implement the following features:

[0113] Preferably, the system information block associated with the plurality of paging BWPs comprises at least one of: a physical control channel configuration for each paging BWP, a paging BWP selection weight for each paging BWP, or a paging BWP selection indication.

[0114] Preferably, transmitting a paging message to a wireless terminal on one of a plurality of paging BWPs based on a system information block comprises:

[0115] selecting a first paging BWP among a plurality of paging BWPs based on a system information block including a paging BWP selection weight for each paging BWP, and

[0116] transmitting a paging message to the wireless terminal on a first paging BWP,

[0117] The first paging BWP is the BWP with the smallest index n, satisfying:

[0118] floor(UE_ID / (N*Ns))modW <W(0)+W(1)+...+W(n)

[0119] Wherein: W(i) is the paging BWP selection weight of the paging BWP with index i, W is the total weight of the paging BWP selection weights for multiple BWPs, N is the total number of paging frames in a period of time, Ns is the number of paging occasions for the paging frame, and UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X.

[0120] Preferably, transmitting a paging message to a wireless terminal on one of a plurality of paging BWPs based on a system information block comprises:

[0121] selecting a second paging BWP among the plurality of paging BWPs based on a system information block including an initial paging BWP selection weight for the initial paging BWP and additional paging BWP selection weights for all at least one additional paging BWP, and

[0122] Transmitting a paging message on the second paging BWP,

[0123] in:

[0124] The second paging BWP is the initial paging BWP if the following conditions are met:

[0125] floor(UE_ID / (N*Ns*X))≤initial paging BWP selection weight, or

[0126] UE_ID / (N*Ns*X)≤initial paging BWP selection weight, or

[0127] The second paging BWP is one of the at least one additional paging BWP and the index of the second paging BWP is equal to floor(UE_ID / (N*Ns)) mod M,

[0128] Where: N is the total number of paging frames in a period of time, Ns is the number of paging occasions for a paging frame, UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X, and M is the number of at least one additional paging BWP.

[0129] Preferably, transmitting a paging message to a wireless terminal on one of a plurality of paging BWPs based on a system information block comprises:

[0130] selecting a first additional paging BWP among the at least one additional paging BWP based on a system information block including additional paging BWP selection weights for all of the at least one additional paging BWPs, and

[0131] transmitting a paging message to the wireless terminal on a first additional paging BWP,

[0132] The index of the first additional paging BWP is equal to floor(UE_ID / (N*Ns)) mod M,

[0133] Where: N is the total number of paging frames in a period of time, Ns is the number of paging occasions for a paging frame, UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X, and M is the number of at least one additional paging BWP.

[0134] Preferably, transmitting a paging message to a wireless terminal on one of a plurality of paging BWPs based on a system information block comprises:

[0135] selecting a third paging BWP from the plurality of paging BWPs based on a system information block including a common paging BWP selection weight for all of the plurality of paging BWPs, and

[0136] transmitting a paging message to the wireless terminal on a third paging BWP,

[0137] The index of the third paging BWP is floor(UE_ID / (N*Ns))mod(M+1),

[0138] Where: N is the total number of paging frames in a period of time, Ns is the number of paging occasions for a paging frame, UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X, and M is the number of at least one additional paging BWP.

[0139] Preferably, the wireless communication method further includes:

[0140] transmitting to the access and mobility management function an indication of the capability to support monitoring of paging messages on the additional paging BWP, and / or

[0141] A paging message for the wireless terminal is received from an access and mobility management function, wherein the paging message includes a capability indication to support monitoring of paging messages on an additional paging BWP.

[0142] The present disclosure relates to a wireless communication method for use in a wireless terminal. The method comprises:

[0143] receiving, from a radio network node, a system information block including physical random access channel (PRACH) information associated with a plurality of uplink bandwidth parts (BWPs), the plurality of uplink BWPs including an initial uplink BWP and at least one additional uplink BWP,

[0144] transmitting a random access preamble to the radio network node on one of the plurality of uplink BWPs based on the system information block, and

[0145] The random access response is monitored on the downlink BWP corresponding to the uplink BWP on which the random access preamble was transmitted.

[0146] Various embodiments may preferably implement the following features:

[0147] Preferably, the PRACH information for the first uplink BWP comprises at least one of: a PRACH configuration for the first uplink BWP, a PRACH BWP selection weight for the first uplink BWP, or a PRACH BWP selection indication for the initial uplink BWP and / or at least one additional uplink BWP.

[0148] Preferably, the PRACH configuration includes at least one of the following: a PRACH resource, or an index or a BWP identifier of a corresponding downlink BWP configured to carry a random access response.

[0149] Preferably, transmitting a random access preamble to a radio network node on one of a plurality of uplink BWPs based on a system information block comprises:

[0150] selecting one of an initial uplink BWP or at least one additional uplink BWP based on PRACH selection weights of the plurality of uplink BWPs, and

[0151] A random access preamble is transmitted to the radio network node on the selected uplink BWP.

[0152] Preferably, transmitting a random access preamble to a radio network node on one of a plurality of uplink BWPs based on a system information block comprises:

[0153] selecting the initial uplink BWP or one additional uplink BWP based on at least one of an initial PRACH BWP selection weight for the initial uplink BWP or a common PRACH BWP selection weight for at least one additional uplink BWP,

[0154] If the at least one additional uplink BWP is selected, selecting one of the at least one additional uplink BWP, and

[0155] A random access preamble is transmitted to the radio network node on the selected uplink BWP.

[0156] Preferably, the PRACH information includes a PRACH BWP selection indication of at least one additional uplink BWP, and transmitting a random access preamble to the radio network node on one of the plurality of uplink BWPs based on the system information block comprises:

[0157] selecting one of at least one additional uplink BWP based on the PRACH BWP selection indication, and

[0158] A random access preamble is transmitted to the radio network node on the selected additional uplink BWP.

[0159] Preferably, the PRACH information includes a PRACH BWP selection indication of an initial uplink BWP and at least one additional uplink BWP, and transmitting a random access preamble to the radio network node on one of the plurality of uplink BWPs based on the system information block comprises:

[0160] selecting an initial uplink BWP, or one of at least one additional uplink BWP based on the PRACH BWP selection indication, and

[0161] A random access preamble is transmitted to the radio network node on the selected uplink BWP.

[0162] Preferably, the reference signal received power of the selected uplink BWP is greater than or equal to a reference signal received power threshold.

[0163] Preferably, the wireless communication method further comprises transmitting, in the second uplink BWP, to the radio network node a capability indication of supporting a random access procedure on the additional uplink BWP.

[0164] Preferably, the capability indication is included in message 3, message 5, a User Equipment Capability Information message or an uplink Medium Access Control Control element.

[0165] Preferably, transmitting a random access preamble to a radio network node on one of a plurality of uplink BWPs based on a system information block comprises:

[0166] receiving a preamble configuration for a first additional uplink BWP of at least one additional uplink BWP from a radio network node, and

[0167] A random access preamble is transmitted to the radio network node in a first additional uplink BWP based on the preamble indication.

[0168] Preferably, the preamble configuration is received by or included in downlink control information or a radio resource control message.

[0169] Preferably, the preamble configuration includes at least one of a BWP index of the first additional uplink BWP, uplink frequency information of a PRACH resource for the first additional uplink BWP, or a preamble index.

[0170] The present disclosure relates to a wireless communication method for use in a wireless network node. The method comprises:

[0171] transmitting to a wireless terminal a system information block including physical random access channel (PRACH) information associated with a plurality of uplink bandwidth parts (BWPs), the plurality of uplink BWPs including an initial uplink BWP and at least one additional uplink BWP,

[0172] receiving a random access preamble from a wireless terminal on one of a plurality of uplink BWPs, and

[0173] The random access response is transmitted on the downlink BWP corresponding to the uplink BWP on which the random access preamble was received.

[0174] Various embodiments may preferably implement the following features:

[0175] Preferably, the PRACH information for the first uplink BWP includes: a PRACH configuration for the first uplink BWP, a PRACH BWP selection weight for the first uplink BWP, or a PRACH BWP selection indication for the initial uplink BWP and / or at least one additional uplink BWP.

[0176] Preferably, the PRACH configuration includes at least one of the following: a PRACH resource, or an index or a BWP identifier of a corresponding downlink BWP configured to carry a random access response.

[0177] Preferably, the wireless communication method further comprises: receiving, in the second uplink BWP, from the wireless terminal a capability indication of supporting a random access procedure on an additional uplink BWP.

[0178] Preferably, the capability indication is included in message 3, message 5, a User Equipment Capability Information message or an uplink Medium Access Control Control element.

[0179] Preferably, receiving a random access preamble from a wireless terminal on one of the plurality of uplink BWPs comprises:

[0180] transmitting a preamble configuration of a first additional uplink BWP of at least one additional uplink BWP to the wireless terminal, and

[0181] A random access preamble associated with the preamble indication is received from the wireless terminal in a first additional uplink BWP.

[0182] Preferably, the preamble configuration is transmitted by or included in the downlink control information or the radio resource control message.

[0183] Preferably, the preamble configuration includes at least one of a BWP index of the first additional uplink BWP, uplink frequency information of a PRACH resource for the first additional uplink BWP, or a preamble index.

[0184] The present disclosure relates to a wireless communication method for use in a wireless network node. The method comprises:

[0185] receiving a paging message for the wireless terminal from an access and mobility management function, wherein the paging message includes recent communication information of the wireless terminal, and

[0186] The wireless terminal is paged based on the most recent communication information.

[0187] Various embodiments may preferably implement the following features:

[0188] Preferably, the wireless communication method further comprises transmitting a message including an indication that the wireless terminal has entered an inactive state and recent communication information of the wireless terminal to the access and mobility management function.

[0189] Preferably, the recent communication information includes at least one of information related to at least one recently used cell or information related to at least one recently used synchronization signal / physical broadcast channel block (SSB).

[0190] The present disclosure relates to a wireless communication method for use in access and mobility management functions. The method includes: transmitting a paging message for a wireless terminal to a wireless network node, wherein the paging message includes the most recent communication information of the wireless terminal.

[0191] Various embodiments may preferably implement the following features:

[0192] Preferably, the wireless communication method further comprises receiving, from the wireless network node, a message including an indication that the wireless terminal has entered an inactive state and the latest communication information of the wireless terminal.

[0193] Preferably, the recent communication information includes at least one of information on at least one recently used cell or information on at least one recently used synchronization signal / physical broadcast channel block (SSB).

[0194] The present disclosure relates to a wireless terminal. The wireless terminal comprises:

[0195] a communication unit configured to receive a system information block of an anchor cell from a radio network node, wherein the system information block of the anchor cell includes a radio resource configuration for at least one non-anchor cell, and

[0196] A processor configured to:

[0197] selecting one of an anchor cell or at least one non-anchor cell based on the radio resource configuration, and

[0198] A random access procedure is performed in the selected cell.

[0199] Various embodiments may preferably implement the following features:

[0200] Preferably, the processor is further configured to execute any one of the aforementioned wireless communication methods.

[0201] The present disclosure relates to a wireless network node. The wireless network node comprises:

[0202] a communication unit configured to transmit a system information block of an anchor cell to a wireless terminal, wherein the system information block of the anchor cell includes a radio resource configuration for at least one non-anchor cell, and

[0203] A processor is configured to perform, with a wireless terminal, a random access procedure on a cell selected from one of an anchor cell or at least one non-anchor cell.

[0204] Various embodiments may preferably implement the following features:

[0205] Preferably, the processor is further configured to execute any one of the aforementioned wireless communication methods.

[0206] The present disclosure relates to a wireless terminal. The wireless terminal comprises:

[0207] A communication unit is configured to receive a first system information block of a serving cell from a radio network node, wherein the first system information block of the serving cell includes a second system information block for at least one neighbor cell.

[0208] Various embodiments may preferably implement the following features:

[0209] Preferably, the wireless terminal further comprises a processor configured to execute any one of the aforementioned wireless communication methods.

[0210] The present disclosure relates to a wireless network node. The wireless network node comprises:

[0211] A communication unit is configured to transmit a first system information block of a serving cell to a wireless terminal, wherein the first system information block of the serving cell includes a second system information block for at least one neighbor cell.

[0212] Various embodiments may preferably implement the following features:

[0213] Preferably, the radio network node further comprises a processor configured to execute any one of the aforementioned wireless communication methods.

[0214] The present disclosure relates to a wireless terminal. The wireless terminal comprises:

[0215] A communication unit configured to:

[0216] receiving, from a radio network node, a system information block associated with a plurality of paging bandwidth parts (BWPs), the plurality of paging BWPs comprising an initial paging BWP and at least one additional paging BWP,

[0217] transmitting to the radio network node an indication of a capability to support monitoring of paging messages on an additional paging BWP, and

[0218] A processor is configured to monitor a paging message on one of a plurality of paging BWPs based on a system information block.

[0219] Various embodiments may preferably implement the following features:

[0220] Preferably, the processor is further configured to execute any one of the aforementioned wireless communication methods.

[0221] The present disclosure relates to a wireless network node. The wireless network node comprises:

[0222] A communication unit configured to:

[0223] transmitting to a wireless terminal a system information block associated with a plurality of paging bandwidth parts (BWPs), the plurality of paging BWPs comprising an initial paging BWP and at least one additional paging BWP,

[0224] receiving from the wireless terminal an indication of a capability to support monitoring of paging messages on an additional paging BWP, and

[0225] The paging message is transmitted on one of a plurality of paging BWPs based on the system information block.

[0226] Various embodiments may preferably implement the following features:

[0227] Preferably, the radio network node further comprises a processor configured to execute any one of the aforementioned wireless communication methods.

[0228] The present disclosure relates to a wireless terminal. The wireless terminal comprises:

[0229] A communication unit configured to:

[0230] receiving, from a radio network node, a system information block including physical random access channel (PRACH) information associated with a plurality of uplink bandwidth parts (BWPs), the plurality of uplink BWPs including an initial uplink BWP and at least one additional uplink BWP,

[0231] transmitting a random access preamble to the radio network node on one of the plurality of uplink BWPs based on the system information block, and

[0232] A processor is configured to monitor for a random access response on a downlink BWP corresponding to an uplink BWP on which a random access preamble was transmitted.

[0233] Various embodiments may preferably implement the following features:

[0234] Preferably, the processor is further configured to execute any one of the aforementioned wireless communication methods.

[0235] The present disclosure relates to a wireless network node. The wireless network node comprises:

[0236] A communication unit configured to:

[0237] transmitting to a wireless terminal a system information block including physical random access channel (PRACH) information associated with a plurality of uplink bandwidth parts (BWPs), the plurality of uplink BWPs including an initial uplink BWP and at least one additional uplink BWP,

[0238] receiving a random access preamble from a wireless terminal on one of a plurality of uplink BWPs, and

[0239] The random access response is transmitted on the downlink BWP corresponding to the uplink BWP on which the random access preamble was received.

[0240] Various embodiments may preferably implement the following features:

[0241] Preferably, the radio network node further comprises a processor configured to execute any one of the aforementioned wireless communication methods.

[0242] The present disclosure relates to a wireless network node. The wireless network node comprises:

[0243] a communication unit configured to receive a paging message for a wireless terminal from an access and mobility management function, wherein the paging message includes recent communication information of the wireless terminal, and

[0244] A processor is configured to page the wireless terminal based on the most recent communication information.

[0245] Various embodiments may preferably implement the following features:

[0246] Preferably, the processor is further configured to execute any one of the aforementioned wireless communication methods.

[0247] The present disclosure relates to a wireless device including access and mobility management functionality, the wireless device comprising:

[0248] A communication unit is configured to transmit a paging message for a wireless terminal to a radio network node, wherein the paging message includes the latest communication information of the wireless terminal.

[0249] Various embodiments may preferably implement the following features:

[0250] Preferably, the wireless device further comprises a processor configured to execute any one of the aforementioned wireless communication methods.

[0251] Preferably, the wireless device including access and mobility management functions refers to the access and mobility management functions or a wireless device (eg, a wireless network node / element / entity) including / performing at least part of the functions of the access and mobility management functions.

[0252] The present disclosure relates to a computer program product, which includes a computer-readable program medium code stored thereon, and when the code is executed by a processor, the processor is caused to implement any one of the wireless communication methods described in the foregoing methods.

[0253] The exemplary embodiments disclosed herein are intended to provide features that become readily apparent by reference to the following description when combined with the accompanying drawings. According to various embodiments, exemplary systems, methods, devices, and computer program products are disclosed herein. However, it is understood that these embodiments are presented by way of example rather than limitation, and it is apparent to those of ordinary skill in the art who read this disclosure that various modifications may be made to the disclosed embodiments while remaining within the scope of this disclosure.

[0254] Therefore, the present disclosure is not limited to the exemplary embodiments and applications described and illustrated herein. In addition, the specific order and / or hierarchy of the steps in the methods disclosed herein are merely exemplary methods. Based on design preferences, the specific order or hierarchy of the steps of the disclosed methods or processes can be rearranged while remaining within the scope of the present disclosure. Therefore, it will be understood by those of ordinary skill in the art that the methods and techniques disclosed herein present various steps or actions in an example order, and the present disclosure is not limited to the specific order or hierarchy presented, unless otherwise expressly stated.

[0255] The invention is specified by the independent claims. Preferred embodiments are defined in the dependent claims. In the following description, although many features may be specified as optional, it is acknowledged that all features contained in the independent claims should not be construed as optional. BRIEF DESCRIPTION OF THE DRAWINGS

[0256] The above and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims.

[0257] Figure 1 A schematic diagram showing a process according to an embodiment of the present disclosure is shown.

[0258] Figure 2 A schematic diagram showing a process according to an embodiment of the present disclosure is shown.

[0259] Figure 3 A schematic diagram showing a process according to an embodiment of the present disclosure is shown.

[0260] Figure 4 A schematic diagram showing a process according to an embodiment of the present disclosure is shown.

[0261] Figure 5 A schematic diagram showing a process according to an embodiment of the present disclosure is shown.

[0262] Figure 6A schematic diagram showing a process according to an embodiment of the present disclosure is shown.

[0263] Figure 7 A schematic diagram showing a process according to an embodiment of the present disclosure is shown.

[0264] Figure 8 A schematic diagram showing a process according to an embodiment of the present disclosure is shown.

[0265] Fig. 9 A schematic diagram showing a process according to an embodiment of the present disclosure is shown.

[0266] Fig.10 An example of a schematic diagram of a wireless terminal according to an embodiment of the present disclosure is shown.

[0267] Fig.11 An example of a schematic diagram of a wireless network node according to an embodiment of the present disclosure is shown.

[0268] Fig.12 A schematic diagram of a network (architecture) according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0269] In an embodiment, in order to save power consumption of the radio access network (e.g., gNB power consumption), the network device may attempt to reduce downlink transmission (e.g., downlink common signals and / or signaling). For example, in a multi-carrier or multi-inter-frequency cell deployment scenario, power consumption is reduced if the following conditions are met:

[0270] - Only one carrier (e.g., anchor carrier, UE camping carrier or primary carrier) or cell in one frequency (e.g., anchor cell, or UE camping cell) provides synchronization signal and / or MIB (master information block) and / or SIB (system information block) and / or PBCH (physical broadcast channel); and

[0271] -Other carriers (e.g., non-anchor carriers, traffic carriers, or NES (network energy saving) carriers) or other cells (e.g., non-anchor cells, traffic cells, or NES cells) are used to perform PRACH (Physical Random Access Channel) procedures and / or traffic delivery (e.g., other carriers do not provide synchronization signals and / or MIB and / or SIB and / or PBCH).

[0272] In the following, how to provide non-anchor cell SI configuration and / or how to select PRACH resources and / or how to determine traffic carrier / cell is introduced through exemplary embodiments.

[0273] Non-anchor SI configuration and RA process in non-anchor carriers

[0274] Figure 1 A schematic diagram of a process according to an embodiment of the present disclosure is shown. Figure 1 For non-anchor carriers or non-anchor cells (e.g. Figure 1 The radio resource configuration of the random access (RA) procedure of the cell 2) in the anchor carrier or the anchor cell (eg Figure 1 1). Note that Figure 1 Only one cell 2 is shown for illustration purposes.

[0275] In an embodiment, the anchor cell is the cell on which the UE is camped.

[0276] In an embodiment, a non-anchor cell is a cell on which the UE may perform a RA procedure (eg, a PRACH procedure) and / or data / traffic communications.

[0277] In an embodiment, the anchor cell and the non-anchor cell may be equal to the anchor carrier and the non-anchor carrier, respectively.

[0278] In an embodiment, the non-anchor cell may be one or more cells or one or more carriers in one cell.

[0279] In an embodiment, the radio resource configuration for the RA procedure for (each) non-anchor carrier or non-anchor cell includes / indicates at least one of the following:

[0280] - Physical cell identity of the non-anchor cell,

[0281] - Uplink frequency information of non-anchor cells,

[0282] - Downlink frequency information of non-anchor cells,

[0283] -PRACH resource configuration for non-anchor cells,

[0284] - Common search space configuration for non-anchor cells,

[0285] - RSRP (Reference Signal Received Power) threshold for RA procedure,

[0286] - a weight or indication of a non-anchor cell to be used for the RA procedure, or

[0287] - Downlink reference signal of non-anchor cell.

[0288] In an embodiment, if the physical cell identity of the non-anchor cell is not included in the radio resource configuration for the non-anchor carrier or cell, the physical cell identity of the anchor cell is used as the physical cell identity of the non-anchor cell. Under such conditions, it can be regarded as a multi-carrier cell (e.g., a cell with multiple carriers). For example, if the SIB in cell 1 and the radio resource configuration for cell 2 does not include the physical cell identity of cell 2, then Figure 1 Cell 1 and cell 2 in can be separate carriers in the same cell.

[0289] In an embodiment, if the downlink reference signal of the non-anchor cell is not included / not indicated in the radio resource configuration for the non-anchor carrier / cell, the measurement result of the anchor cell or the measurement result of another non-anchor cell is used for the measurement of this non-anchor cell (for example, assuming that if the downlink reference signal is not configured for the non-anchor cell, the downlink reference information of the anchor cell is also used for the non-anchor cell; or multiple non-anchor cells use a common downlink reference signal; or if the downlink reference signal is not configured for the first non-anchor cell, the first non-anchor cell uses the downlink reference signal of the second non-anchor cell). If the downlink reference signal of the non-anchor cell is included in the radio resource configuration for the non-anchor carrier or cell, the UE performs RSRP measurement for the non-anchor cell before performing the random access procedure.

[0290] In an embodiment, an indication of whether an SSB (SS / PBCH block) is configured for a non-anchor cell, or an indication of whether an SSB includes a PBCH or MIB (eg, only a synchronization signal is transmitted without transmitting a PBCH).

[0291] In an embodiment, the DL frequency information of the non-anchor cell may be included in the PRACH resource configuration of the non-anchor cell (eg, associated with the PRACH resource) or included in the configuration information of the non-anchor cell (eg, associated with the downlink frequency information of the non-anchor cell).

[0292] In an embodiment, the RSRP threshold of the non-anchor cell used for the RA process is used to determine whether the UE can perform the RA process on the non-anchor cell. If the RSRP of the non-anchor cell or the beam of the non-anchor cell is greater than or equal to the RSRP threshold of the non-anchor cell used for the RA process, the UE can perform the RA process by using the random access resources of the non-anchor cell or the beam of the non-anchor cell. The RSRP threshold of the non-anchor cell can be a common threshold for all non-anchor cells. As an alternative, the RSRP threshold can be configured per non-anchor cell, per SSB, or per PRACH resource (e.g., (legacy) PRACH resources, Redcap (reduced capability) PRACH resources, SDT (small data transmission) PRACH resources).

[0293] In an embodiment, the PRACH resource configuration of the non-anchor cell may also be an initial uplink BWP (bandwidth part) or an uplink common BWP (for example, the PRACH resource configuration is included in the initial Uplink BWP or BWP-Uplink Common). Note that the name of the resource element including the PRACH resource configuration may change. In addition, the resource element including the PRACH resource configuration may also include at least one of the frequency domain position of the PRACH resource, CSS-RA (common search space for Random A access procedure) information configuration, PCCH (paging control channel) information configuration, or CSS frequency domain position.

[0294] In an embodiment, the CSS configuration may also be a common resource set, initialDownlinkBWP or BWP-DownlinkCommon (eg, the CSS configuration is included in initialDownlinkBWP or BWP-DownlinkCommon).

[0295] In an embodiment, the weight or indication of the cell used for the RA procedure is used to balance the random access load between the anchor cell and the non-anchor cell. For example, a UE that does not support random access in a non-anchor cell can only perform random access in the anchor cell. Therefore, the weight or indication of the cell used for the random access procedure is used to indicate that at least part (e.g., part or all) of the UEs that support random access in the non-anchor cell perform random access in the non-anchor cell.

[0296] In an embodiment, the weight or indication of the cell used for the random access procedure may be related to:

[0297] - Anchor carrier / anchor cell and non-anchor carrier / cell: For example, all non-anchor carriers or cells with PRACH resources have the same weight or indication,

[0298] - Per carrier or per cell: For example, each cell with PRACH resources has its own weight or indication.

[0299] -PRACH resource type: In an embodiment, the PRACH resource type may be one of a conventional PRACH resource, a Redcap PRACH resource, and an SDT PRACH resource. Different PRACH resource types may be configured with different weights or indications. The UE selects the weight or indication based on the PRACH resource type.

[0300] In an embodiment, the random access procedure used for non-anchor carriers / cells (eg Figure 1 The radio resource configuration of the cell 2 in the anchor carrier is included in the SIB of the anchor carrier / cell (e.g. Figure 1 1), a UE in the anchor carrier may perform random access in a non-anchor carrier / cell based on an embodiment for PRACH resource selection.

[0301] Neighborhood cell measurement:

[0302] In embodiments where the UE is in RRC_IDLE or RRC_INACTIVE state except for PRACH procedures, the intra-frequency measurements are assumed by the UE to be measurements of the anchor carrier or anchor cell.

[0303] In an embodiment of the UE in the PRACH process, the intra-frequency measurement is assumed by the UE to be a measurement of the anchor carrier or anchor cell. As an alternative, the intra-frequency measurement is assumed by the UE to be a measurement of the carrier or cell used for the random access response. If the UE assumes that the intra-frequency measurement is a measurement of the carrier or cell used for the random access response, the radio resource configuration for the random access process of the non-anchor carrier / cell may also include neighbor cell information of the non-anchor cell (e.g., cell reselection information for intra-frequency, neighbor cell related information for intra-frequency cell reselection, neighbor cell related information for inter-frequency cell reselection).

[0304] In an embodiment in which the UE is in the RRC_CONNECTED state, the intra-frequency measurement is assumed by the UE to be a measurement of an anchor carrier or an anchor cell. As an alternative, the UE may assume the intra-frequency measurement to be a measurement of a traffic carrier or a traffic cell (i.e., a cell / carrier used for traffic communication). If the UE assumes that the intra-frequency measurement is a measurement of a traffic carrier or a traffic cell or a pcell (primary cell) used, the intra-frequency and / or inter-frequency cell-related information may be configured based on the traffic carrier or the traffic cell or the pcell used (e.g., the intra-frequency measurement is a measurement of a traffic carrier or a traffic cell or a pcell used).

[0305] PRACH resource selection process

[0306] In an embodiment, the downlink reference signal of the non-anchor cell is not included in the radio resource configuration for the non-anchor carrier or cell and the weight for the RA process / procedure is configured per cell. In this embodiment, the UE selects the anchor cell or one of the non-anchor cells for random access based on the weight of the cell for the RA process. The UE then selects a preamble for the random access process in the selected cell.

[0307] In an embodiment, the downlink reference signal of the non-anchor cell is not included in the radio resource configuration for the non-anchor cell. In this embodiment, the weight for the RA process is configured for the anchor cell and / or one weight is configured for all non-anchor cells. Under such conditions, the UE selects an anchor cell or a non-anchor cell for the random access process based on the weights of the anchor cell and / or the non-anchor cell for the RA process. If a non-anchor cell is selected, the UE randomly and equally likely selects a preamble among non-anchor cells or non-anchor cell beams having an RSRP value greater than or equal to the RSRP threshold. For example, the selection probability is equal for all non-anchor carrier PRACH resources and the probability of selecting a PRACH resource is (1-prach-ProbabilityAnchor) / (the number of non-anchor PRACH resources), where prach-ProbabilityAnchor is the probability that the UE selects an anchor cell.

[0308] In an embodiment, the downlink reference signal of the non-anchor cell is not included in the radio resource configuration for the non-anchor cell and the indication of the cell used for the RA procedure indicates that the UE supporting random access in the non-anchor cell performs random access (only) in the non-anchor cell. In this embodiment, the UE supporting random access in the non-anchor cell selects the preamble code randomly but with equal probability among the non-anchor cells or non-anchor cell beams having an RSRP value greater than or equal to the RSRP threshold. For example, the selection probability is equal for all non-anchor carrier PRACH resources and the probability of selecting one PRACH resource is 1 / (the number of non-anchor PRACH resources).

[0309] In an embodiment, a downlink reference signal of a non-anchor cell is not included in a radio resource configuration for the non-anchor cell, and an indication of a cell for a RA procedure indicates that a UE supporting random access in a non-anchor cell can perform random access in an anchor cell or a non-anchor cell. In this embodiment, a UE supporting random access in a non-anchor cell selects a preamble randomly but with equal probability among an anchor cell, an anchor cell beam, or a non-anchor cell or a non-anchor cell beam having an RSRP value greater than or equal to an RSRP threshold. For example, the selection probability is equal for each available PRACH resource and the probability of selecting one PRACH resource is 1 / (the number of PRACH resources).

[0310] In an embodiment, the downlink reference signal of the non-anchor cell is included in the radio resource configuration for the non-anchor cell and the weight of the cell used for the RA process is configured per cell. In this embodiment, the UE measures the RSRP of each non-anchor cell and selects cells with RSRP values ​​greater than or equal to the RSRP threshold and the anchor cell as candidate cells for random access. Next, the UE selects a cell for random access from the candidate cells based on the weights of the candidate cells for random access and selects a preamble in the selected cell for random access.

[0311] In an embodiment, the downlink reference signal of the non-anchor cell is included in the radio resource configuration for the non-anchor cell. In this embodiment, the weight of the cell used for the RA process is configured for the anchor cell and / or one weight is configured for all non-anchor cells. Under such conditions, the UE measures the RSRP of each non-anchor cell and selects cells with RSRP values ​​greater than or equal to the RSRP threshold and anchor cells as candidate cells for random access. If there is at least one non-anchor cell among the candidate cells for random access, the UE selects an anchor cell or a non-anchor cell for random access based on the weight of the anchor cell and the weights of all non-anchor cells. If a non-anchor cell is selected, the UE randomly but equally likely selects a preamble among non-anchor cells or non-anchor cell beams with RSRP values ​​greater than or equal to the RSRP threshold. That is, for all non-anchor carrier PRACH resources, the selection probability is equal, and the probability of selecting a PRACH resource is (1-prach-ProbabilityAnchor) / (the number of non-anchor PRACH resources).

[0312] In an embodiment, a downlink reference signal of a non-anchor cell is included in a radio resource configuration for the non-anchor cell and an indication of a cell for a RA procedure indicates that a UE supporting random access in a non-anchor cell performs random access only in the non-anchor cell. In this embodiment, a UE supporting random access in a non-anchor cell measures the RSRP of the non-anchor cell and selects a non-anchor cell having an RSRP value greater than or equal to an RSRP threshold as a candidate cell for random access. A UE supporting random access in a non-anchor cell selects a preamble randomly but with equal probability among those of the candidate cells for random access. For example, the selection probability is equal for all non-anchor cell PRACH resources and the probability of selecting one PRACH resource is 1 / (the number of non-anchor PRACH resources).

[0313] In an embodiment, a downlink reference signal of a non-anchor cell is included in a radio resource configuration for the non-anchor cell and an indication of a cell for a RA procedure indicates that a UE supporting random access in a non-anchor cell can perform random access in an anchor cell or a non-anchor cell. In this embodiment, a UE supporting random access in a non-anchor cell measures the RSRP of each non-anchor cell and selects cells and anchor cells having RSRP values ​​greater than or equal to an RSRP threshold as candidate cells for random access. A UE supporting random access in a non-anchor cell selects a preamble randomly but with equal probability among those of an anchor cell, an anchor cell beam, or a non-anchor cell or a non-anchor cell beam having an RSRP value greater than or equal to an RSRP threshold. For example, the selection probability is equal for available PRACH resources, and the probability of selecting one PRACH resource is 1 / (the number of PRACH resources).

[0314] Traffic cell allocation process

[0315] Figure 2 FIG. 1 is a schematic diagram showing a flow cell allocation process according to an embodiment of the present disclosure. Figure 2 In the embodiment, the UE sends the RSRP measurement result of the non-anchor cell (such as cell 2) to the gNB, or sends a non-anchor cell indication that the RSRP value of the non-anchor cell is greater than or equal to a pre-configured RSRP threshold. In an embodiment, the UE sends this information in RRC message 3 (during the random access process). In an embodiment, the pre-configured RSRP threshold is sent to the UE by SIB, MAC CE or RAR message. Based on the RSRP measurement result of the non-anchor cell or the non-anchor cell indication, the gNB can hand over the UE to the non-anchor cell or add the non-anchor cell as an Scell ​​(secondary cell), for example in the case of CA (carrier aggregation) or DC (dual-connectivity).

[0316] Figure 3 FIG. 1 is a schematic diagram showing a flow cell allocation process according to an embodiment of the present disclosure. Figure 3 In the embodiment, after RRC message 3, the gNB in ​​cell 1 (e.g., where the UE performs a random access procedure) sends measurement control information to instruct the UE to report available traffic cell information. In an embodiment, the measurement control information includes at least one of the following: a list of candidate cells to be reported, an RSRP threshold for non-anchor cells, and / or a neighbor cell measurement report. In an embodiment, the measurement control information is sent to the UE via an RRC message, a MAC CE, or a DCI.

[0317] After receiving the measurement control information, the UE sends the RSRP measurement result of the non-anchor cell (e.g., cell 2) to the gNB or sends a non-anchor cell indication whose RSRP value is greater than or equal to a pre-configured RSRP threshold. In an embodiment, the pre-configured RSRP threshold is sent to the UE by a SIB, MAC CE, or RRC message.

[0318] Based on the RSRP measurement results of the non-anchor cell or the non-anchor cell indication, the gNB can hand over the UE to the non-anchor cell or add the non-anchor cell as an Scell ​​(for example, for CA or DC).

[0319] exist Figure 2 and Figure 3 In some embodiments, the non-anchor cell (e.g., cell 2) may not send SIB or only send SIB information for the RRC_CONNECTED state. That is, the gNB may not send the SIB in cell 2 to the UE or send the SIB in cell 2 for the RRC_CONNECTED state to the UE.

[0320] exist Figure 2 and Figure 3 In some embodiments, after receiving the SI update indication, the RRC_CONNECTED UE in the non-anchor cell may receive SI from the anchor cell (cell 1) or only receive SIB information for the RRC_CONNECTED state from the traffic cell (eg, cell 2).

[0321] Figure 4 A schematic diagram showing a process according to an embodiment of the present disclosure is shown. Figure 4 The process shown in relates to non-anchor RA capabilities for PDCCH order or radio resource configuration.

[0322] Specifically, the UE reports its capability indicating that the UE supports random access in a non-anchor cell in RRC message 3, RRC message 5, a UE capability information message or a UL MAC CE.

[0323] After / upon receiving the UE capability indicating that the UE supports random access in a non-anchor cell, the gNB may allocate a preamble of a non-anchor cell to the UE by PDCCH order or downlink RRC message. In an embodiment, the cell index or carrier index is included in the preamble configuration.

[0324] After / upon receiving the preamble of a non-anchor cell, the UE performs a random access procedure on the non-anchor cell by using the assigned preamble at a predefined preamble occasion. After the random access procedure (e.g., receiving a random access response message), the UE returns to the traffic cell (e.g., cell 1 used by the UE in the RRC_CONNECTED state) to perform traffic transmission / reception.

[0325] Figure 5 A schematic diagram of a process according to an embodiment of the present disclosure is shown. Figure 5 In the example, the SIB information of the serving / anchor cell (eg, cell 1) includes the SIB of the neighboring / non-anchor cell (eg, cell 2).

[0326] In an embodiment, the UE may perform certain operations based on the SIB of a neighbor / non-anchor cell (e.g., cell 2). For example, the UE may be handed over to a neighbor cell or non-anchor cell (e.g., communicate with a gNB therein) or may be handed over to a neighbor cell or non-anchor cell.

[0327] In some embodiments, if the UE in the serving cell obtains the SIB of the neighbor cell or non-anchor cell, the delay caused by the UE obtaining the SIB information of the neighbor cell or non-anchor cell after switching to the neighbor cell or non-anchor cell can be reduced.

[0328] In some embodiments, if the SIB information of the neighbor cell or non-anchor cell is the same as that of the serving cell, the UE may avoid acquiring the SIB of the neighbor cell or non-anchor cell after switching to the neighbor cell or non-anchor cell.

[0329] In an embodiment where the SIB information of a neighbor cell or a non-anchor cell (e.g., cell 2) is included in the SIB of a serving cell (e.g., cell 1), the SIB information of the neighbor cell or the non-anchor cell may include at least one of the following:

[0330] - an indication that a portion of the SIB of a neighbor cell or non-anchor cell (e.g., cell 2) is identical to the SIB of the serving cell,

[0331] - SIBs of neighbor cells or non-anchor cells, or

[0332] - Delta SIB information, including the difference between the SIB of the neighbor cell or non-anchor cell relative to the SIB of the serving cell (eg, part of the SIB of the neighbor cell or non-anchor cell).

[0333] In an embodiment, the SIB information of the neighbor cell or non-anchor cell included in the SIB of the serving cell may include only the delta SIB information associated with the difference between the SIB of the neighbor cell or non-anchor cell and the SIB of the serving cell.

[0334] In an embodiment, the SIB information of the neighbor cell or the non-anchor cell may be included in an RRC container or a pre-defined SIB of the serving cell.

[0335] Multiple paging BWPs and / or multiple PRACH BWPs per cell

[0336] Figure 6 A schematic diagram of a process according to an embodiment of the present disclosure is shown. Figure 6 In the example, multiple paging BWPs are configured for each cell.

[0337] Specifically, in the SIB, the cell or gNB sends at least one of the following:

[0338] -Paging BWP carrying PCCH configuration,

[0339] - Paging BWP selection weight, or

[0340] -Paging BWP selection indication.

[0341] In an embodiment, the plurality of paging BWPs include an initial paging BWP and additional paging BWPs (eg, downlink (common) BWPs).

[0342] In an embodiment, the paging BWP selection weight may be configured per paging BWP. Alternatively, the initial paging BWP has its own paging BWP selection weight and / or all additional paging BWPs have a common paging BWP selection weight.

[0343] The UE sends the UE paging capability to the cell or gNB regarding whether monitoring paging on the additional downlink BWP is supported, wherein the UE paging capability may be sent via an RRC message (e.g., UE capability information). In an embodiment, if the UE is assumed to not support monitoring paging on the additional downlink BWP, the transmission of the UE paging capability may be omitted.

[0344] In an embodiment, the multiple paging BWPs may also be multiple downlink BWPs, or multiple downlink common resource configuration sets, which include at least one of: a common search space for paging monitoring, a common search space for downlink monitoring during a random access process (e.g., monitoring a random access response and / or RRC message 4), or frequency domain information related to the downlink common resource configuration.

[0345] Note that in the present disclosure, a cell sending information / signaling / data to a wireless device (e.g., UE or AMF) may mean that a base station (e.g., RAN node, gNB) sends the information / signaling / data in the cell or by using the cell or via the cell.

[0346] The cell or gNB sends the UE paging capabilities to the AMF, where the UE paging capabilities may be sent by a NGAP message (e.g., in the UE radio capabilities of the paging information element of the UE radio capabilities information indication message).

[0347] The AMF sends a paging (message) to the cell / gNB including the UE paging capability regarding whether monitoring paging on the additional downlink BWP is supported, where the UE paging capability may be sent by the NGAP paging message (e.g., in the UE radio capabilities for paging information element).

[0348] Based on the SIB information (including at least one of the following: multiple downlink BWPs carrying PCCH configuration, paging BWP selection weight or paging BWP selection indication) and UE paging capability, the cell / gNB selects the initial downlink BWP, or one of the additional downlink BWPs carrying PCCH configuration as the downlink BWP for sending paging to the UE.

[0349] On the other hand, based on SIB information (including at least one of the following: multiple downlink BWPs configured by carrying PCCH, paging BWP selection weight or paging BWP selection indication) and whether the UE paging capability of paging on additional BWP is supported, the UE selects the initial downlink BWP or one of the additional downlink BWPs configured by carrying PCCH as the downlink BWP for monitoring paging. The UE monitors paging on the selected downlink BWP.

[0350] The mechanism by which a UE, cell or gNB selects a downlink BWP for paging is described in the following embodiments.

[0351] In some embodiments, the UE can only select the initial downlink BWP for paging. That is, the UE does not support monitoring paging on the additional downlink BWP. Therefore, the UE selects the initial downlink BWP and monitors paging on the initial downlink BWP.

[0352] In some embodiments, the UE supports monitoring paging on an additional downlink BWP. In these embodiments, the UE selects a downlink BWP for paging, such as the following embodiments:

[0353] Case 1:

[0354] In an embodiment, the paging BWP selection weight is configured according to the BWP configured by the PCCH in the SIB. For example, the weight is an integer configured for each BWP. As an alternative, the weight is a relative number (%) or a ratio, which can be converted to an integer. For example, two weights 50% and 50% are configured for two BWPs configured for the PCCH, and based on 50%:50%=1:1, the two weights are converted to 1 and 1.

[0355] In this embodiment, the UE selects a downlink BWP for paging based on the configured paging BWP selection weight and the UE identity based on the following embodiments.

[0356] In an embodiment, if the UE supports (monitors) paging on an additional downlink BWP and if an additional downlink BWP carrying a PCCH configuration is provided in the SIB, the downlink BWP selected for monitoring paging is the downlink BWP with the smallest index n (0≤n≤the number of additional downlink BWPs carrying the PCCH configuration), satisfying the following equation:

[0357] floor(UE_ID / (N*Ns))modW <W(0)+W(1)+...+W(n)

[0358] in:

[0359] W(i) is the paging BWP selection weight for the downlink BWP with index i, for example, W(0) is the paging BWP selection weight for the downlink BWP with index 0 (e.g., the initial downlink BWP); W(1) is the paging BWP selection weight for the downlink BWP with index 1 (e.g., the first additional downlink BWP carrying the PCCH configuration), and so on;

[0360] W is the total weight of all downlink BWPs carrying the PCCH configuration of the cell, i.e., W = W(0) + W(1) + ... + W(m), where m is the number of additional downlink BWPs carrying the PCCH configuration;

[0361] N is the total number of paging frames within a period of time T;

[0362] Ns is the number of paging occasions for the paging frame; and

[0363] UE_ID is the UE identity (e.g., 5G-S-TMSI) mod X, where X is an integer.

[0364] In the present disclosure, the term "mod" means a modulo function. For example, the number II mod the number K (ie, II mod K) means obtaining the remainder when II is divided by K.

[0365] In the present disclosure, floor() means a floor function that obtains the largest integer less than or equal to an input variable.

[0366] Case 2:

[0367] In an embodiment, a paging BWP selection weight is configured for an initial downlink BWP and additional downlink BWPs carrying a PCCH configuration (eg, all additional downlink BWPs carrying a PCCH configuration share one weight).

[0368] In this embodiment, the UE selects a downlink BWP for paging based on the paging BWP selection weight and the UE identity, as follows:

[0369] If the UE supports (monitors) paging on the additional downlink BWP and if the additional downlink BWP carrying the PCCH configuration is provided in the system information (e.g. SIB), the paging BWP is determined based on:

[0370] If floor(UE_ID / (N*Ns*X))≤Paging BWP selection weight of initial downlink BWP; or

[0371] If UE_ID / (N*Ns*X)≤paging BWP selection weight of initial downlink BWP;

[0372] Then the UE selects the initial downlink BWP for paging;

[0373] Otherwise, the UE selects one of the additional downlink BWPs for paging based on the following rules:

[0374] Paging BWP index = floor(UE_ID / (N*Ns)) mod M.

[0375] in:

[0376] N is the total number of paging frames within a period of time T;

[0377] Ns is the number of paging occasions for a paging frame;

[0378] UE_ID is the UE identity (e.g., 5G-S-TMSI) mod X, where X is an integer; and

[0379] M is the number of additional downlink BWPs carrying the PCCH configuration.

[0380] In an embodiment, a paging BWP index = 0 indicates that a first additional downlink BWP is selected for paging, a paging BWP index = 1 indicates that a second additional downlink BWP is selected for paging, and so on.

[0381] Case 3:

[0382] In an embodiment, the paging BWP selection indication is configured for an initial downlink BWP and indicates that a UE supporting monitoring of paging on an additional downlink BWP is to monitor paging only on the additional downlink BWP.

[0383] In this embodiment, the UE selects a downlink BWP for paging based on the paging BWP selection weight and the UE identity as follows:

[0384] If the UE supports (monitors) paging on an additional downlink BWP and if an additional downlink BWP carrying the PCCH configuration is provided in the system information (e.g., SIB), the paging BWP is the BWP that satisfies the following equation:

[0385] Paging BWP index = floor(UE_ID / (N*Ns)) mod M

[0386] in:

[0387] N is the total number of paging frames within a period of time T;

[0388] Ns is the number of paging occasions for a paging frame;

[0389] UE_ID is the UE identity (e.g., 5G-S-TMSI) mod X, where X is an integer; and

[0390] M is the number of additional downlink BWPs carrying the PCCH configuration.

[0391] In an embodiment, a paging BWP index = 0 indicates that a first additional downlink BWP is selected for paging, a paging BWP index = 1 indicates that a second additional downlink BWP is selected for paging, and so on.

[0392] Case 4:

[0393] In an embodiment, the paging BWP selection indication is configured for an initial downlink BWP and indicates a UE supporting monitoring for paging on an additional downlink BWP to monitor for paging on the initial downlink BWP or the additional downlink BWP.

[0394] In this embodiment, the UE selects a downlink BWP for paging based on the paging BWP selection weight and the UE identity, as follows:

[0395] If the UE supports paging on an additional downlink BWP and if an additional downlink BWP carrying the PCCH configuration is provided in the system information, the paging BWP is the paging BWP that satisfies the following equation:

[0396] Paging BWP index = floor(UE_ID / (N*Ns))mod(M+1)

[0397] in:

[0398] N is the total number of paging frames within a period of time T;

[0399] Ns is the number of paging occasions for a paging frame;

[0400] UE_ID is the UE identity (e.g., 5G-S-TMSI) mod X, where X is an integer; and

[0401] M is the number of additional downlink BWPs carrying the PCCH configuration.

[0402] For example, paging BWP index=0 indicates that the initial downlink BWP is selected for paging, paging BWP index=1 indicates that the first additional downlink BWP is selected for paging, paging BWP index=2 indicates that the second additional downlink BWP is selected for paging, and so on.

[0403] Figure 7 A schematic diagram of a process according to an embodiment of the present disclosure is shown. Figure 7In the embodiment, multiple NPRACH BWPs are configured per cell. In an embodiment, the multiple NPRACH BWPs may also be multiple uplink BWPs or multiple uplink common resource configurations, which include frequency domain information related to the uplink common resource configuration and the PRACH configuration.

[0404] exist Figure 7 In the embodiment shown in , the cell or gNB sends at least one of the following in the SIB of the cell: multiple uplink BWPs carrying PRACH configuration, PRACH BWP selection weights, or PRACH BWP selection indications.

[0405] In an embodiment, the PRACH configuration includes at least one of the following: NPRACH resources, or a BWP ID or index of a downlink BWP carrying a random access response. In an embodiment, the BWPID or index of a downlink BWP carrying a random access response can be configured per PRACH resource type (e.g., a legacy PRACH resource, a redcap PRACH resource, or an SDT PRACH resource).

[0406] In an embodiment, if the UE supports the PRACH process on the additional uplink BWP and if the additional uplink BWP carrying the PRACH configuration is provided in the system information (e.g., SIB), the UE selects one of the initial uplink BWP or the additional uplink BWP as the BWP on which to perform the PRACH process (e.g., transmit the PRACH preamble code to the cell or gNB) based on the PRACH BWP selection weight or the PRACH BWP selection indication.

[0407] In the present disclosure, the additional uplink BWP may be an uplink common BWP.

[0408] After / upon receiving the preamble, the gNB sends a random access response on the downlink BWP associated with the preamble.

[0409] After sending the preamble on the selected uplink BWP, the UE monitors for random access responses on the downlink BWP associated with the preamble.

[0410] The mechanism for UE to select PRACH BWP is similar to the mechanism for PRACH resource selection process in the above embodiments. For example, the mechanism for UE to select PRACH BWP can be obtained by replacing the anchor cell and the non-anchor cell by the initial uplink BWP and the additional uplink BWP, respectively.

[0411] For example, the UE may select a PRACH BWP based on the following cases:

[0412] Case 1:

[0413] In an embodiment, if the weight of the uplink BWP for the PRACH process is configured per BWP using the configured NPRACH resources, the UE selects one of the initial uplink BWP or the additional uplink for the PRACH process based on the weight of each BWP for the PRACH process and selects a preamble in the selected BWP for the PRACH process.

[0414] Case 2:

[0415] In an embodiment, the weight of the BWP used for the RA process is configured for the initial uplink BWP and / or one weight is configured for all additional uplink BWPs.

[0416] In this embodiment, the UE selects an initial uplink BWP or an additional uplink BWP for random access based on the weight of the BWP used for the RA procedure. If the additional uplink BWP is selected, the UE selects the preamble randomly but with equal probability among the additional uplink BWP or additional uplink BWP beams having an RSRP value greater than or equal to the RSRP threshold. For example, the selection probability is equal for all additional uplink BWPs and the probability that one additional uplink BWP is selected is (1-ProbabilityInitialBWP) / (the number of additional uplink BWPs), where ProbabilityInitialBWP is the probability of selecting the initial uplink BWP (e.g., the weight of the initial BWP used for the RA procedure).

[0417] Alternatively, the selection probability is equal for all available NPRACH resources in the additional uplink BWP. For example, NPRACH resources can be configured per BWP. That is, different BWPs may have different NPRACH resources. In this embodiment, the probability of selecting a PRACH resource in the additional uplink BWP is (1-ProbabilityInitialBWP) / (the number of available NPRACH resources in the additional uplink BWP), where ProbabilityInitialBWP is the probability of selecting the initial uplink BWP (e.g., the weight of the initial BWP used for the RA process).

[0418] Case 3:

[0419] In an embodiment, the indication of the BWP for the RA procedure indicates that the UE supporting random access on the additional uplink BWP performs random access only on the additional uplink BWP. In this embodiment, the UE supporting random access in the additional uplink BWP selects the preamble code randomly but with equal probability among the additional uplink BWP or the additional uplink BWP beam having an RSRP value greater than or equal to the RSRP threshold. For example, the selection probability is equal for all additional uplink BWPs, and the probability of one additional uplink BWP being selected is 1 / (the number of additional uplink BWPs).

[0420] As an alternative, the selection probability is equal for all available NPRACH resources in the additional uplink BWP. For example, NPRACH resources can be configured per BWP and different BWPs can have different NPRACH resources. In this embodiment, the probability of selecting a PRACH resource in the additional uplink BWP is 1 / (the number of available NPRACH resources in the additional uplink BWP).

[0421] Case 4:

[0422] In an embodiment, the indication of the BWP used for the RA procedure indicates that a UE supporting random access on an additional uplink BWP can perform random access on an initial uplink BWP or an additional uplink BWP. In this embodiment, a UE supporting random access on an additional uplink BWP selects a preamble randomly but with equal probability among the initial uplink BWP or an additional uplink BWP carrying an NPRACH configuration, or an associated beam with an RSRP value greater than or equal to an RSRP threshold. For example, the selection probability is equal for the available BWPs (i.e., the initial BWP and the additional BWP with an RSRP value greater than or equal to the RSRP threshold) and the probability that an available BWP is selected is 1 / (the number of available BWPs).

[0423] Alternatively, the selection probability is equal for all available NPRACH resources among the available BWPs (i.e., the initial BWP and additional BWPs having RSRP values ​​greater than or equal to the RSRP threshold) and the probability of selecting a PRACH resource among the available BWPs is 1 / (the number of available NPRACH resources among the available BWPs).

[0424] Figure 8 A schematic diagram of a process according to an embodiment of the present disclosure is shown. Figure 8 In the present invention, the UE reports the capability of supporting the random access procedure on an additional uplink BWP for PDCCH order or radio resource configuration.

[0425] Figure 8 The mechanism shown in Figure 4 , for example, if the non-anchor cell is replaced with an additional uplink BWP.

[0426] Specifically, the UE reports its capability, for example, through RRC message 3, RRC message 5, UE capability information message or UL MAC CE, indicating that the UE is in the additional uplink BWP (for example Figure 8 Random access is supported in BWP2). Figure 8 In the example, the UE may report capabilities on BWP1 (eg, the active BWP).

[0427] After / upon receiving the UE capability indicating that the UE supports random access in an additional uplink BWP, the gNB may allocate a preamble of an additional uplink BWP to the UE via a PDCCH order or a downlink RRC message (e.g., a BWP index or BWP ID included in the preamble configuration).

[0428] After / upon receiving the preamble of the additional uplink BWP, the UE uses the assigned preamble on the additional uplink BWP (eg, Figure 8 After the random access procedure (e.g., receiving a random access response message), the UE returns to the dedicated BWP (e.g., Figure 8 BWP1 in to perform traffic transmission / reception.

[0429] Fig. 9 A schematic diagram of a process according to an embodiment of the present disclosure is shown. Fig. 9 In , paging can be performed in a limited area.

[0430] exist Fig. 9 In the embodiment shown in , the RAN node (e.g., gNB) sends a connection release or connection suspension message to the AMF to instruct the UE to enter the RRC_IDLE state or the RRC_INACTIVE state, wherein the connection release or connection suspension message includes the UE's most recently used cell information (e.g., information of a cell most recently used by the UE or information of a cell on which the UE has most recently stayed) and / or the UE's most recently used SSB information (e.g., information of an SSB most recently used by the UE or information of an SSB on which the UE has most recently stayed).

[0431] The AMF sends a paging message to the RAN node, where the paging message includes the most recently used cell information and / or the most recently used SSB information.

[0432] After / upon receiving the most recently used cell information and the most recently used SSB information in the paging message, the RAN node pages the UE based on the most recently used cell information and / or the most recently used SSB information. For example, the gNB may page the UE in the most recently used cell and the most recently used SSB of the UE. If the paging fails, the RAN node re-pages the UE in all SSBs within the cell.

[0433] In an embodiment, the connection release or connection suspension message includes at least one of the following: UE context release complete, UE context suspension request, UE context recovery request.

[0434] In an embodiment, the recently used cell information refers to information about the recently used cell of the UE. For example, the recently used cell information includes one or more (e.g., a list) of information related to the used cell of the UE. The information related to the used cell includes at least one of the following: a cell identifier or a duration that the UE stays in the cell. In an embodiment, the recently used cell information may include information about the latest cell used (only) by the UE or the latest cell in which the UE stays.

[0435] In an embodiment, the recently used SSB information refers to information of the recently used SSB of the UE. For example, the recently used SSB information includes one or more (e.g., a list) of information related to the SSBs recently used by the UE. The information related to each recently used SSB includes at least one of the following: an SSB index, an SSB identifier, and a duration of the UE's stay in the SSB. In an embodiment, the recently used SSB information may include information of the latest SSB used (only) by the UE or the latest SSB that the UE stayed in.

[0436] In an embodiment, the most recently used cell may also be referred to as a recommended cell for paging.

[0437] In an embodiment, the most recently used SSB may also be named as a recommended SSB for paging.

[0438] Fig.10A schematic diagram of a wireless terminal 100 according to an embodiment of the present disclosure is provided. The wireless terminal 100 may be a user equipment (UE), a mobile phone, a laptop computer, a tablet computer, an e-book, or a portable computer system and is not limited thereto. The wireless terminal 100 may include a processor 1000 such as a microprocessor or an application specific integrated circuit (ASIC), a storage unit 1010, and a communication unit 1020. The storage unit 1010 may be any data storage device storing program code 1012, which is accessed and executed by the processor 1000. Embodiments of the storage unit 1010 include, but are not limited to, a subscriber identity module (SIM), a read-only memory (ROM), a flash memory, a random-access memory (RAM), a hard disk, and an optical data storage device. The communication unit 1020 may be a transceiver and is used to transmit and receive signals (e.g., messages or packets) according to the processing results of the processor 1000. In an embodiment, the communication unit 1020 communicates via Fig.10 At least one antenna 1022 is shown for transmitting and receiving signals.

[0439] In an embodiment, the storage unit 1010 and the program code 1012 may be omitted and the processor 1000 may include a storage unit storing the program code.

[0440] Processor 1000 may implement any of the steps of the exemplary embodiments on wireless terminal 100 , for example by executing program code 1012 .

[0441] The communication unit 1020 may be a transceiver. The communication unit 1020 may be configured as a transmission unit and a reception unit for transmitting and receiving signals to and from a wireless network node (eg, a base station) respectively, alternatively or additionally.

[0442] Fig.11A schematic diagram of a radio network node 110 according to an embodiment of the present disclosure is provided. The radio network node 110 may be a satellite, a base station (BS), a network entity, a mobility management entity (MME), a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), a radio access network (RAN) node, a next generation RAN (NG-RAN) node, a gNB, an eNB, a gNB central unit (gNB-CU), a gNB distributed unit (gNB-DU), a data network, a core network, or a radio network controller (RNC) but is not limited thereto. In addition, the radio network node 110 may include (execute) at least one network function, such as an access and mobility management function (AMF), a session management function (SMF), a user place function (UPF), a policy control function (PCF), an application function (AF), etc. The wireless network node 110 may include a processor 1100 such as a microprocessor or an ASIC, a storage unit 1110, and a communication unit 1120. The storage unit 1110 may be any data storage device storing program code 1112, which is accessed and executed by the processor 1100. Examples of the storage unit 1110 include, but are not limited to, a SIM, a ROM, a flash memory, a RAM, a hard disk, and an optical data storage device. The communication unit 1120 may be a transceiver and is used to transmit and receive signals (e.g., messages or packets) according to the processing results of the processor 1100. In an embodiment, the communication unit 1120 communicates with the processor 1100 via a processor 1100. Fig.11 At least one antenna 1122 is shown for transmitting and receiving signals.

[0443] In an embodiment, the storage unit 1110 and the program code 1112 may be omitted. The processor 1100 may include a storage unit storing a program code.

[0444] Processor 1100 may implement any of the steps described in the exemplary embodiments on wireless terminal 110 , for example by executing program code 1112 .

[0445] The communication unit 1120 may be a transceiver. The communication unit 1120 may be configured as a transmitting unit and a receiving unit for transmitting and receiving signals to and from a wireless terminal (e.g., a user device or another wireless network node) as an alternative or additional combination.

[0446] Fig.12 A schematic diagram of a network (architecture) according to an embodiment of the present disclosure is shown. Figure 1 In , the network includes the following network functions / entities:

[0447] 1) UE: User Equipment

[0448] 2) RAN: Radio Access Network

[0449] In the present disclosure, RAN may be equal to a RAN node or a Next Generation RAN (NG-RAN) (node).

[0450] 3)AMF: Access and Mobility Management Function

[0451] AMF includes the following functions: registration management, connection management, reachability management and mobility management. AMF terminates the RAN control plane (CP) interface N2 and NAS interface N1, non-access stratum (NAS) encryption and integrity protection. It also assigns session management (SM) NAS to the appropriate session management function (SMF) via interface N11. AMF provides services for other consumer network functions (NF) to subscribe or obtain notifications of mobility-related events and information.

[0452] 4)SMF: Session Management Function

[0453] SMF includes the following functions: session establishment, modification and release, UE IP address allocation and management (including optional authorization functions), selection and control of user plane (UP) functions, downlink data notification. SMF can subscribe to mobility-related events and information from AMF.

[0454] 5) UPF: User Plane Function

[0455] UPF includes the following functions: serving as an anchor point for intra / inter-radio access technology (RAT) mobility and an external session point for interconnection to the data network, packet routing and forwarding as indicated by the SMF, traffic usage reporting, quality of service (QoS) processing for UP, downlink packet buffering and downlink data notification triggering, etc.

[0456] 6) UDM: Unified Data Management

[0457] UDM manages the subscription profiles of the UE. The subscription includes data for mobility management (e.g., restricted areas), session management (e.g., QoS profiles per DNN per slice). The subscription data also includes slice selection parameters, which are used by AMF to select the appropriate SMF. AMF and SMF obtain subscriptions from UDM. Subscription data is stored in a unified data repository (UDR). UDM uses such data after receiving a request from AMF or SMF.

[0458] 7) PCF: Policy Control Function

[0459] PCF supports a unified policy framework to manage network behavior. PCF provides access management policies to AMF, or provides session management policies to SMF, and / or provides UE policies to UE. PCF can access UDR to obtain subscription information related to policy decisions. PCF can also generate policies based on the subscription and instructions from the application function (AF) to manage network behavior. PCF can then provide policy rules to CP functions (e.g., AMF and / or SMF) to enforce CP functions.

[0460] 8)NEF: Network Exposure Function

[0461] NEF supports exposing network capabilities and events to AF. Third-party AF can call network-provided services via NEF, and NEF performs authentication and authorization for third-party applications. NEF also provides translation of information exchanged with AF and information exchanged with internal NF.

[0462] 9) AF: Application Function

[0463] The AF interacts with the core network to provide services, for example, to support: application impact on traffic routing, access to NEF, interaction with the policy framework for policy control, etc. The AF can be considered trusted by the operator and can be allowed to interact directly with the relevant NF. AFs that are not allowed by the operator to directly access NFs should interact with the relevant NFs via NEF using an external exposure framework. The AF can store application information in the UDR via the NEF.

[0464] Although various embodiments of the present disclosure have been described above, it should be understood that they are presented only by way of example rather than by way of limitation. Similarly, various figures may depict example architectures or configurations, which are provided to enable those of ordinary skill in the art to understand the exemplary features and functions of the present disclosure. However, these personnel will understand that the present disclosure is not limited to the example architectures or configurations shown, but may be implemented using a variety of alternative architectures and configurations. In addition, as will be understood by those of ordinary skill in the art, one or more features of an embodiment may be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of the present disclosure should not be limited by any of the exemplary embodiments described above.

[0465] It should also be understood that any reference to an element or embodiment using names such as "first," "second," etc., herein does not generally limit the number or order of those elements. Rather, these names may be used herein as a convenient means of distinguishing two or more elements or instances of an element. Thus, a reference to a first element and a second element does not mean that only two elements may be used, or that the first element must be located before the second element in some manner.

[0466] In addition, those of ordinary skill in the art will appreciate that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, and symbols referenced in the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0467] Those skilled in the art will further understand that any of the various illustrative logical blocks, units, processors, devices, circuits, methods, and functions described in conjunction with the aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementations, analog implementations, or a combination of the two), firmware, various forms of programs or design codes containing instructions (referred to herein as "software" or "software units" for convenience), or any combination of these technologies.

[0468] In order to clearly illustrate this interchangeability of hardware, firmware and software, various illustrative components, blocks, units, circuits and steps have been generally described above in terms of their functionality. Whether these functionalities are implemented as hardware, firmware or software, or a combination of these technologies, depends on the specific application and design constraints imposed on the entire system. The technician can implement the described functionality in various ways for each specific application, but such implementation decision will not cause deviation from the scope of this disclosure. According to various embodiments, processors, devices, components, circuits, structures, machines, units, etc. can be configured to perform one or more functions of the functions described herein. The term "configured to" or "configured for" used herein with respect to a specified operation or function refers to a processor, device, component, circuit, structure, machine, unit, etc. that is physically constructed, programmed and / or arranged to perform a specified operation or function.

[0469] In addition, it will be understood by those skilled in the art that the various illustrative logic blocks, units, devices, components and circuits described herein may be implemented or performed in an integrated circuit (IC) that may 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 device, or any combination thereof. The logic blocks, units and circuits may further include an antenna and / or a transceiver to communicate with various components within a network or within a device. The general-purpose processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other suitable configuration to perform the functions described herein. If implemented in software, the functions may be stored as one or more instructions or codes on a computer-readable medium. Therefore, the steps of the method or algorithm disclosed herein may be implemented as software stored on a computer-readable medium.

[0470] Computer-readable media include computer storage media and communication media, including any medium that enables a computer program or code to be communicated from one place to another. Storage media can be any available medium that a computer can access. By way of example and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired program code in the form of instructions or data structures and can be accessed by a computer.

[0471] In this document, the term "unit" as used herein refers to software, firmware, hardware, and any combination of these elements to perform the relevant functions described herein. In addition, for the purpose of discussion, various units are described as discrete units; however, it is obvious to a person skilled in the art that two or more units can be combined to form a single unit that performs the associated functions according to the embodiments of the present disclosure.

[0472] In addition, memory or other storage and communication components may be used in embodiments of the present disclosure. It should be understood that, for clarity, the above description has described embodiments of the present disclosure with reference to different functional units and processors. However, it will be apparent that any appropriate functional distribution between different functional units, processing logic elements or domains may be used without departing from the present disclosure. For example, functionality shown as being performed by a separate processing logic element or controller may be performed by the same processing logic element or controller. Therefore, reference to a specific functional unit is only a reference to an appropriate device for providing the described functionality, rather than indicating a strict logical or physical structure or organization.

[0473] Various modifications to the embodiments described in this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the claims. Therefore, the present disclosure is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the novel features and principles disclosed herein, as set forth in the following claims.

Claims

1. A wireless communication method for use in a wireless terminal, the method comprising: receiving a system information block of an anchor cell from a radio network node, wherein the system information block of the anchor cell includes a radio resource configuration for at least one non-anchor cell, selecting the anchor cell or one of the at least one non-anchor cell based on the radio resource configuration, and A random access procedure is performed in the selected cell.

2. The wireless communication method according to claim 1, wherein: The radio resource configuration for a first non-anchor cell of the at least one non-anchor cell comprises at least one of the following: a physical cell identifier of the first non-anchor cell, uplink frequency information of the first non-anchor cell, downlink frequency information of the first non-anchor cell, a physical random access channel (PRACH) resource configuration of the first non-anchor cell, a common search space configuration of the first non-anchor cell, a reference signal received power (RSRP) threshold of the first non-anchor cell, a weight or indication for a random access procedure on said first non-anchor cell, or At least one downlink reference signal of the first non-anchor cell.

3. The wireless communication method according to claim 1 or 2, wherein: If the radio resource configuration does not include a physical cell identifier of a first non-anchor cell among the at least one non-anchor cell, the anchor cell has the same physical cell identifier as the first non-anchor cell among the at least one non-anchor cell.

4. The wireless communication method according to any one of claims 1 to 3, wherein: A first non-anchor cell among the at least one non-anchor cell shares at least one downlink reference signal with the anchor cell or a second non-anchor cell among the at least one non-anchor cell.

5. The wireless communication method according to any one of claims 1 to 3, wherein: Selecting the anchor cell or one of the at least one non-anchor cell based on the radio resource configuration includes: The anchor cell or one of the at least one non-anchor cell is selected based on a weight of each of the anchor cell and the at least one non-anchor cell for the random access procedure.

6. The wireless communication method according to any one of claims 1 to 3, wherein: Selecting the anchor cell or one of the at least one non-anchor cell based on the radio resource configuration includes: selecting the anchor cell or the at least one non-anchor cell based on at least one of a first weight of the anchor cell for the random access procedure or a second weight of the at least one non-anchor cell for the random access procedure, and If the at least one non-anchor cell is selected, one of the at least one non-anchor cell is selected.

7. The wireless communication method according to any one of claims 1 to 3, wherein: The radio resource configuration includes an indication to perform the random access procedure on the non-anchor cell, and The selecting, based on the radio resource configuration, the anchor cell or one of the at least one non-anchor cell comprises: One of the at least one non-anchor cell is selected.

8. The wireless communication method according to any one of claims 1 to 3, wherein: The radio resource configuration includes an indication to perform the random access procedure on the anchor cell or the non-anchor cell, and The selecting, based on the radio resource configuration, the anchor cell or one of the at least one non-anchor cell comprises: One of the anchor cell or the at least one non-anchor cell is selected.

9. The wireless communication method according to any one of claims 5 to 8, wherein: The reference signal received power of the selected cell is greater than or equal to a reference signal received power threshold of the selected cell.

10. The wireless communication method according to any one of claims 1 to 9, wherein: Performing the random access procedure on the selected cell includes: transmitting, in the selected cell, candidate cell information associated with at least one candidate cell to the radio network node, receiving, in the selected cell, mobility information associated with one of the at least one candidate cell from the radio network node, and A radio resource control response message is transmitted to the radio network node in the candidate cell associated with the mobility information.

11. The wireless communication method according to claim 10, wherein: The candidate cell information associated with at least one candidate cell is included in message 3 of the random access procedure.

12. The wireless communication method according to claim 10, further comprising: transmitting a message 3 of the random access procedure to the radio network node in the selected cell, and A report instruction for the candidate cell information is received from the radio network node.

13. The wireless communication method according to any one of claims 10 to 12, further comprising: handing over to the candidate cell associated with the mobility information, or The candidate cell associated with the mobility information is added as a secondary cell for carrier aggregation or dual connectivity.

14. The wireless communication method according to any one of claims 10 to 13, further comprising: System information for a radio resource control connection state is received from the radio network node in the candidate cell associated with the mobility information.

15. The wireless communication method according to any one of claims 1 to 14, wherein: Performing the random access procedure in the selected cell includes: A capability indication of supporting the random access procedure in the non-anchor cell is transmitted to the radio network node in the selected cell.

16. The wireless communication method according to claim 15, wherein: The capability indication is included in message 3, message 5, a user equipment capability information message or an uplink medium access control element of the random access procedure.

17. The wireless communication method according to claim 15 or 16, wherein: Performing the random access procedure in the selected cell further includes: receiving a preamble configuration of a third non-anchor cell among the at least one non-anchor cell from the radio network node through downlink configuration information or a radio resource control message, and transmitting a random access preamble to the radio network node in the third non-anchor cell based on the preamble configuration, The preamble configuration includes at least one of a cell identifier of the third non-anchor cell, uplink frequency information of the third non-anchor cell, or a preamble index.

18. A wireless communication method for use in a wireless network node, the method comprising: transmitting a system information block of an anchor cell to a wireless terminal, wherein the system information block of the anchor cell includes a radio resource configuration for at least one non-anchor cell, and A random access procedure is performed with the wireless terminal in a cell selected from one of the anchor cell or the at least one non-anchor cell.

19. The wireless communication method according to claim 18, wherein: The radio resource configuration for a first non-anchor cell among the at least one non-anchor cell includes at least one of the following: a physical cell identifier of the first non-anchor cell, uplink frequency information of the first non-anchor cell, downlink frequency information of the first non-anchor cell, a physical random access channel (PRACH) resource configuration of the first non-anchor cell, a common search space configuration of the first non-anchor cell, A reference signal received power (RSRP) threshold of the first non-anchor cell. a weight or indication for a random access procedure on said first non-anchor cell, or At least one downlink reference signal of the first non-anchor cell.

20. The wireless communication method according to claim 18 or 19, wherein: If the radio resource configuration does not include a physical cell identity of a first non-anchor cell of the at least one non-anchor cell, the anchor cell and the first non-anchor cell of the at least one non-anchor cell have the same physical cell identity.

21. The wireless communication method according to any one of claims 18 to 20, wherein: A first non-anchor cell among the at least one non-anchor cell shares at least one downlink reference signal with the anchor cell or a second non-anchor cell among the at least one non-anchor cell.

22. The wireless communication method according to any one of claims 18 to 21, wherein: Utilizing the wireless terminal to perform the random access procedure in the selected cell includes: receiving candidate cell information associated with at least one candidate cell from the wireless terminal in the selected cell, transmitting, in the selected cell, mobility information associated with one of the at least one candidate cell to the wireless terminal, and A radio resource control response message is received from the wireless terminal in the candidate cell associated with the mobility information.

23. The wireless communication method according to claim 22, wherein: The candidate cell information associated with the at least one candidate cell is included in message 3 of the random access procedure.

24. The wireless communication method according to claim 22, further comprising: receiving a message 3 of the random access procedure from the wireless terminal in the selected cell, and A report instruction for the candidate cell information is transmitted to the wireless terminal.

25. The wireless communication method according to any one of claims 22 to 24, further comprising: System information for a radio resource control connection state is transmitted to the wireless terminal in the candidate cell associated with the mobility information.

26. The wireless communication method according to any one of claims 18 to 25, wherein: Utilizing the wireless terminal to perform the random access procedure in the selected cell includes: A capability indication is received from the wireless terminal to support the random access procedure in the non-anchor cell.

27. The wireless communication method according to claim 26, wherein: The capability indication is included in message 3, message 5, a user equipment capability information message or an uplink medium access control element of the random access procedure.

28. The wireless communication method according to claim 26 or 27, wherein: Performing the random access procedure in the selected cell using the wireless terminal further includes: transmitting a preamble configuration of a third non-anchor cell among the at least one non-anchor cell to the wireless terminal through downlink configuration information or a radio resource control message, and receiving a random access preamble from the wireless terminal in the third non-anchor cell based on the preamble configuration, The preamble configuration includes at least one of a cell identifier of the third non-anchor cell, uplink frequency information of the third non-anchor cell, or a preamble index.

29. A wireless communication method for use in a wireless terminal, the method comprising: A first system information block of a serving cell is received from a radio network node, wherein the first system information block of the serving cell includes a second system information block for at least one neighbor cell.

30. The wireless communication method according to claim 29, wherein: The first system information block includes the second system information block by including at least one of: a sharing indication of common system information shared by the serving cell and the at least one neighbor cell, or An incremental indication of at least one difference between the divergent system information in the first system information block and the divergent system information in the second system information block.

31. A wireless communication method for use in a wireless network node, the method comprising: A first system information block of a serving cell is transmitted to a wireless terminal, wherein the first system information block of the serving cell includes a second system information block for at least one neighbor cell.

32. The wireless communication method according to claim 31, wherein: The first system information block includes the second system information block by including at least one of: a sharing indication of common system information shared by the serving cell and the at least one neighbor cell, or An incremental indication of at least one difference between the divergent system information in the first system information block and the divergent system information in the second system information block.

33. A wireless communication method for use in a wireless terminal, the method comprising: receiving, from a radio network node, a system information block associated with a plurality of paging bandwidth parts (BWPs), the plurality of paging BWPs comprising an initial paging BWP and at least one additional paging BWP, transmitting to the radio network node an indication of a capability to support monitoring of paging messages on the additional paging BWP, and A paging message is monitored on one of the plurality of paging BWPs based on the system information block.

34. The wireless communication method according to claim 33, wherein: The system information blocks associated with the plurality of paging BWPs include at least one of the following: Physical control channel configuration for each paging BWP, The paging BWP selection weight for each paging BWP, or Paging BWP selection indication.

35. The wireless communication method according to claim 33 or 34, wherein: Monitoring the paging message on one of the plurality of paging BWPs based on the system information block comprises: selecting a first paging BWP among the plurality of paging BWPs based on the system information block including a paging BWP selection weight for each paging BWP, and monitoring the paging message on the first paging BWP, The first paging BWP is a BWP with the smallest index n, satisfying: floor(UE_ID / (N*Ns))modW <W(0)+W(1)+...+W(n) in: W(i) is the paging BWP selection weight of the paging BWP with index i, W is the total weight of the paging BWP selection weights for the plurality of BWPs, N is the total number of paging frames in a period of time, Ns is the number of paging occasions for the paging frame, and UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X.

36. The wireless communication method according to claim 33 or 34, wherein: Monitoring the paging message on one of the plurality of paging BWPs based on the system information block comprises: selecting a second paging BWP among the plurality of paging BWPs based on the system information block including an initial paging BWP selection weight for the initial paging BWP and additional paging BWP selection weights for all of the at least one additional paging BWP, and monitoring the paging message on the second paging BWP, in: If the following conditions are met, the second paging BWP is the initial paging BWP: floor(UE_ID / (N*Ns*X))≤the initial paging BWP selection weight, or UE_ID / (N*Ns*X)≤the initial paging BWP selection weight, or The second paging BWP is one of the at least one additional paging BWP and the index of the second paging BWP is equal to floor(UE_ID / (N*Ns)) mod M, in: N is the total number of paging frames in a period of time, Ns is the number of paging occasions for a paging frame, UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X, and M is the number of the at least one additional paging BWP.

37. The wireless communication method according to claim 33 or 34, wherein: Monitoring the paging message on one of the plurality of paging BWPs based on the system information block comprises: selecting a first additional paging BWP among the at least one additional paging BWP based on a system information block including additional paging BWP selection weights for all of the at least one additional paging BWP, and monitoring the paging message on the first additional paging BWP, The index of the first additional paging BWP is equal to floor(UE_ID / (N*Ns)) mod M, in: N is the total number of paging frames in a period of time, Ns is the number of paging occasions for a paging frame, UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X, and M is the number of the at least one additional paging BWP.

38. The wireless communication method according to claim 33 or 34, wherein: Monitoring the paging message on one of the plurality of paging BWPs based on the system information block comprises: selecting a third paging BWP from the plurality of paging BWPs based on a system information block including a common paging BWP selection weight for all of the plurality of paging BWPs, and monitoring the paging message on the third paging BWP, The index of the third paging BWP is floor(UE_ID / (N*Ns))mod(M+1), in: N is the total number of paging frames in a period of time, Ns is the number of paging occasions for a paging frame, UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X, and M is the number of the at least one additional paging BWP.

39. A wireless communication method for use in a wireless network node, the method comprising: transmitting to a wireless terminal a system information block associated with a plurality of paging bandwidth parts (BWPs), the plurality of paging BWPs comprising an initial paging BWP and at least one additional paging BWP, receiving from the wireless terminal a capability indication to support monitoring of paging messages on the additional paging BWP, and The paging message is transmitted on one of the plurality of paging BWPs based on the system information block.

40. The wireless communication method according to claim 39, wherein: The system information blocks associated with the plurality of paging BWPs include at least one of the following: Physical control channel configuration for each paging BWP, The paging BWP selection weight for each paging BWP, or Paging BWP selection indication.

41. The wireless communication method according to claim 39 or 40, wherein: Transmitting the paging message to the wireless terminal on one of the plurality of paging BWPs based on the system information block comprises: selecting a first paging BWP among the plurality of paging BWPs based on a system information block including a paging BWP selection weight for each paging BWP, and transmitting the paging message to the wireless terminal on the first paging BWP, The first paging BWP is the BWP with the smallest index n, satisfying: floor(UE_ID / (N*Ns))modW <W(0)+W(1)+...+W(n) in: W(i) is the paging BWP selection weight of the paging BWP with index i, W is the total weight of the paging BWP selection weights for multiple BWPs, N is the total number of paging frames in a period of time, Ns is the number of paging occasions for the paging frame, and UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X.

42. The wireless communication method according to claim 39 or 40, wherein: Transmitting the paging message to the wireless terminal on one of the plurality of paging BWPs based on the system information block comprises: selecting a second paging BWP among the plurality of paging BWPs based on a system information block including an initial paging BWP selection weight for the initial paging BWP and additional paging BWP selection weights for all of the at least one additional paging BWP, and transmitting the paging message on the second paging BWP, in: If the following conditions are met, the second paging BWP is the initial paging BWP: floor(UE_ID / (N*Ns*X))≤the initial paging BWP selection weight, or UE_ID / (N*Ns*X)≤the initial paging BWP selection weight, or The second paging BWP is one of the at least one additional paging BWP and the index of the second paging BWP is equal to floor(UE_ID / (N*Ns)) mod M, in: N is the total number of paging frames in a period of time, Ns is the number of paging occasions for a paging frame, UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X, and M is the number of the at least one additional paging BWP.

43. The wireless communication method according to claim 39 or 40, wherein: Transmitting the paging message to the wireless terminal on one of the plurality of paging BWPs based on the system information block comprises: selecting a first additional paging BWP among the at least one additional paging BWP based on a system information block including additional paging BWP selection weights for all of the at least one additional paging BWP, and transmitting the paging message to the wireless terminal on the first additional paging BWP, The index of the first additional paging BWP is equal to floor(UE_ID / (N*Ns)) mod M, in: N is the total number of paging frames in a period of time, Ns is the number of paging occasions for a paging frame, UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X, and M is the number of the at least one additional paging BWP.

44. The wireless communication method according to claim 39 or 40, wherein: Transmitting the paging message to the wireless terminal on one of the plurality of paging BWPs based on the system information block comprises: selecting a third paging BWP from the plurality of paging BWPs based on a system information block including a common paging BWP selection weight for all of the plurality of paging BWPs, and transmitting the paging message to the wireless terminal on the third paging BWP, The index of the third paging BWP is floor(UE_ID / (N*Ns))mod(M+1), in: N is the total number of paging frames in a period of time, Ns is the number of paging occasions for a paging frame, UE_ID is the remainder of dividing the identifier of the wireless terminal by the integer X, and M is the number of the at least one additional paging BWP.

45. The wireless communication method according to claim 39 or 40, further comprising: transmitting to the access and mobility management function an indication of a capability to support monitoring of said paging messages on said additional paging BWP, and / or A paging message for the wireless terminal is received from the access and mobility management function, wherein the paging message includes a capability indication supporting monitoring of the paging message on the additional paging BWP.

46. ​​A wireless communication method for use in a wireless terminal, the method comprising: receiving, from a radio network node, a system information block including physical random access channel (PRACH) information associated with a plurality of uplink bandwidth parts (BWPs), the plurality of uplink BWPs including an initial uplink BWP and at least one additional uplink BWP, transmitting a random access preamble to the radio network node on one of the plurality of uplink BWPs based on the system information block, and A random access response is monitored on a downlink BWP corresponding to the uplink BWP on which the random access preamble was transmitted.

47. The wireless communication method according to claim 46, wherein: The PRACH information for the first uplink BWP includes at least one of the following: a PRACH configuration for said first uplink BWP, the PRACH BWP selection weight of the first uplink BWP, or A PRACH BWP selection indication of the initial uplink BWP and / or the at least one additional uplink BWP.

48. The wireless communication method according to claim 47, wherein: The PRACH configuration includes at least one of the following: PRACH resources, or An index or a BWP identifier of a corresponding downlink BWP configured to carry the random access response.

49. The wireless communication method according to any one of claims 46 to 48, wherein: Transmitting the random access preamble to the radio network node on one of the plurality of uplink BWPs based on the system information block comprises: selecting the initial uplink BWP, or one of the at least one additional uplink BWP based on the PRACH selection weights of the plurality of uplink BWPs, and The random access preamble is transmitted to the radio network node on the selected uplink BWP.

50. The wireless communication method according to any one of claims 46 to 48, wherein: Transmitting the random access preamble to the radio network node on one of the plurality of uplink BWPs based on the system information block comprises: selecting the initial uplink BWP or the one additional uplink BWP based on at least one of an initial PRACH BWP selection weight for the initial uplink BWP or a common PRACH BWP selection weight for the at least one additional uplink BWP, if the at least one additional uplink BWP is selected, selecting one of the at least one additional uplink BWP, and The random access preamble is transmitted to the radio network node on the selected uplink BWP.

51. The wireless communication method according to any one of claims 46 to 48, wherein: The PRACH information includes a PRACH BWP selection indication for the at least one additional uplink BWP, and The transmitting the random access preamble to the radio network node on one of the plurality of uplink BWPs based on the system information block comprises: selecting one of the at least one additional uplink BWP based on the PRACH BWP selection indication, and The random access preamble is transmitted to the radio network node on the selected additional uplink BWP.

52. The wireless communication method according to any one of claims 46 to 48, wherein: The PRACH information includes a PRACH BWP selection indication for the initial uplink BWP and the at least one additional uplink BWP, and Transmitting the random access preamble to the radio network node on one of the plurality of uplink BWPs based on the system information block comprises: selecting one of the initial uplink BWP or at least one additional uplink BWP based on the PRACH BWP selection indication, and The random access preamble is transmitted to the radio network node on the selected uplink BWP.

53. The wireless communication method according to any one of claims 49 to 52, wherein: The reference signal received power of the selected uplink BWP is greater than or equal to a reference signal received power threshold.

54. The wireless communication method according to any one of claims 46 to 53, further comprising: A capability indication to support a random access procedure on the additional uplink BWP is transmitted to the radio network node in a second uplink BWP.

55. The wireless communication method according to claim 54, wherein: The capability indication is included in message 3, message 5, a user equipment capability information message or an uplink medium access control control element.

56. The wireless communication method according to claim 54 or 55, wherein: Transmitting the random access preamble to the radio network node on one of the plurality of uplink BWPs based on the system information block comprises: receiving a preamble configuration of a first additional uplink BWP of the at least one additional uplink BWP from the radio network node via downlink control information or a radio resource control message, and transmitting the random access preamble to the radio network node in the first additional uplink BWP based on the preamble indication, The preamble configuration includes at least one of a BWP index of the first additional uplink BWP, uplink frequency information of a PRACH resource used for the first additional uplink BWP, or a preamble index.

57. A wireless communication method for use in a wireless network node, the method comprising: transmitting to a wireless terminal a system information block including physical random access channel (PRACH) information associated with a plurality of uplink bandwidth parts (BWPs), the plurality of uplink BWPs including an initial uplink BWP and at least one additional uplink BWP, receiving a random access preamble from the wireless terminal on one of the plurality of uplink BWPs, and The random access response is transmitted on a downlink BWP corresponding to the uplink BWP at which the random access preamble was received.

58. The wireless communication method according to claim 57, wherein: The PRACH information for the first uplink BWP includes: a PRACH configuration for said first uplink BWP, the PRACH BWP selection weight of the first uplink BWP, or A PRACH BWP selection indication of the initial uplink BWP and / or the at least one additional uplink BWP.

59. The wireless communication method according to claim 58, wherein: The PRACH configuration includes at least one of the following: PRACH resources, or An index or a BWP identifier of a corresponding downlink BWP configured to carry the random access response.

60. The wireless communication method according to any one of claims 46 to 53, further comprising: A capability indication to support a random access procedure on said additional uplink BWP is received from said wireless terminal in a second uplink BWP.

61. The wireless communication method according to claim 60, wherein: The capability indication is included in message 3, message 5, a user equipment capability information message or an uplink medium access control control element.

62. The wireless communication method according to claim 60 or 61, wherein: Receiving the random access preamble from the wireless terminal on one of the plurality of uplink BWPs comprises: transmitting a preamble configuration of a first additional uplink BWP of the at least one additional uplink BWP to the wireless terminal through downlink control information or a radio resource control message, and receiving, in the first additional uplink BWP, from the wireless terminal the random access preamble associated with the preamble indication, The preamble configuration includes at least one of a BWP index of the first additional uplink BWP, uplink frequency information of a PRACH resource used for the first additional uplink BWP, or a preamble index.

63. A wireless communication method for use in a wireless network node, the method comprising: receiving a paging message for the wireless terminal from an access and mobility management function, wherein the paging message includes recent communication information of the wireless terminal, and The wireless terminal is paged based on the most recent communication information.

64. The wireless communication method according to claim 63, further comprising A message including an indication that the wireless terminal entered an inactive state and recent communication information of the wireless terminal is transmitted to the access and mobility management function.

65. The wireless communication method according to claim 63 or 64, wherein: The recent communication information includes at least one of information about at least one recently used cell or information about at least one recently used synchronization signal / physical broadcast channel block (SSB).

66. A wireless communication method for use in access and mobility management functions, the method comprising: A paging message for a wireless terminal is transmitted to a wireless network node, wherein the paging message includes recent communication information of the wireless terminal.

67. The wireless communication method according to claim 66, further comprising: A message including an indication that the wireless terminal has entered an inactive state and recent communication information of the wireless terminal is received from the wireless network node.

68. The wireless communication method according to claim 66 or 67, wherein: The recent communication information includes at least one of information about at least one recently used cell or information about at least one recently used synchronization signal / physical broadcast channel block (SSB).

69. A wireless terminal, comprising: a communication unit configured to receive a system information block of an anchor cell from a radio network node, wherein the system information block of the anchor cell comprises a radio resource configuration for at least one non-anchor cell, and A processor configured to: selecting one of the anchor cell or the at least one non-anchor cell based on the radio resource configuration, and A random access procedure is performed in the selected cell.

70. The wireless terminal of claim 69, wherein: The processor is further configured to execute the wireless communication method according to any one of claims 2 to 17.

71. A wireless network node, comprising: a communication unit configured to transmit a system information block of an anchor cell to a wireless terminal, wherein the system information block of the anchor cell includes a radio resource configuration for at least one non-anchor cell, and A processor is configured to perform, with the wireless terminal, a random access procedure on a cell selected from one of the anchor cell or the at least one non-anchor cell.

72. The wireless terminal according to claim 71, wherein: The processor is further configured to execute the wireless communication method according to any one of claims 19 to 28.

73. A wireless terminal comprising: A communication unit is configured to receive a first system information block of a serving cell from a radio network node, wherein the first system information block of the serving cell includes a second system information block for at least one neighbor cell.

74. The wireless terminal according to claim 73, wherein: The first system information block includes the second system information block by including at least one of: a sharing indication of common system information shared by the serving cell and the at least one neighbor cell, or An incremental indication of at least one difference between the divergent system information in the first system information block and the divergent system information in the second system information block.

75. A wireless network node, comprising: A communication unit is configured to transmit a first system information block of a serving cell to a wireless terminal, wherein the first system information block of the serving cell includes a second system information block for at least one neighbor cell.

76. The wireless network node of claim 75, wherein: The first system information block includes the second system information block by including at least one of: a sharing indication of common system information shared by the serving cell and the at least one neighbor cell, or An incremental indication of at least one difference between the divergent system information in the first system information block and the divergent system information in the second system information block.

77. A wireless terminal comprising: A communication unit configured to: receiving, from a radio network node, a system information block associated with a plurality of paging bandwidth parts (BWPs), the plurality of paging BWPs comprising an initial paging BWP and at least one additional paging BWP, transmitting to the radio network node an indication of a capability to support monitoring of paging messages on the additional paging BWP, and A processor is configured to monitor the paging message on one of the plurality of paging BWPs based on the system information block.

78. The wireless terminal according to claim 77, wherein: The processor is further configured to perform the wireless communication method of any one of claims 34 to 38.

79. A wireless network node, comprising: A communication unit configured to: transmitting to a wireless terminal a system information block associated with a plurality of paging bandwidth parts (BWPs), the plurality of paging BWPs comprising an initial paging BWP and at least one additional paging BWP, receiving from the wireless terminal a capability indication to support monitoring of paging messages on the additional paging BWP, and The paging message is transmitted on one of the plurality of paging BWPs based on the system information block.

80. The radio network node of claim 79, further comprising a processor configured to perform the wireless communication method of any one of claims 40 to 45.

81. A wireless terminal, comprising: A communication unit configured to: receiving, from a radio network node, a system information block including physical random access channel (PRACH) information associated with a plurality of uplink bandwidth parts (BWPs), the plurality of uplink BWPs including an initial uplink BWP and at least one additional uplink BWP, transmitting a random access preamble to the radio network node on one of the plurality of uplink BWPs based on the system information block, and A processor is configured to monitor a random access response on a downlink BWP corresponding to an uplink BWP at which the random access preamble was transmitted.

82. The wireless terminal according to claim 81, wherein: The processor is further configured to perform the wireless communication method of any one of claims 47 to 56.

83. A wireless network node, comprising: A communication unit configured to: transmitting to a wireless terminal a system information block including physical random access channel (PRACH) information associated with a plurality of uplink bandwidth parts (BWPs), the plurality of uplink BWPs including an initial uplink BWP and at least one additional uplink BWP, receiving a random access preamble from the wireless terminal on one of the plurality of uplink BWPs, and The random access response is transmitted on a downlink BWP corresponding to the uplink BWP at which the random access preamble was received.

84. The wireless network node of claim 83, further comprising a processor configured to perform the wireless communication method of any one of claims 58 to 62.

85. A wireless network node, comprising: a communication unit configured to receive a paging message for a wireless terminal from an access and mobility management function, wherein the paging message includes recent communication information of the wireless terminal, and A processor is configured to page the wireless terminal based on the most recent communication information.

86. The wireless network node of claim 85, wherein: The processor is also configured to execute the wireless communication method of claim 64 or 65.

87. A wireless device including access and mobility management functionality, the wireless device comprising: A communication unit is configured to transmit a paging message for a wireless terminal to a radio network node, wherein the paging message includes the latest communication information of the wireless terminal.

88. The wireless device of claim 87, further comprising a processor configured to perform the wireless communication method of claim 67 or 68.

89. A computer program product comprising computer readable program medium code stored thereon, which, when executed by a processor, causes the processor to implement the wireless communication method of any one of claims 1 to 68.

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