Wireless communication scheme with extended identifier

Abstract

Methods, systems, and devices for wireless communication with extended identifiers are described. A wireless communication method is provided, comprising: transmitting, by a network device to a user device, configuration information including an indication of a long identifier having a length greater than a short identifier length.

Description

Technical Field

[0001] This patent application relates generally to systems, devices, and techniques for wireless communications. Background Art

[0002] Wireless communication technologies are driving the world toward an increasingly interconnected and networked society. The rapid growth of wireless communications and technological advancements are driving greater demands for capacity and connectivity. Other aspects, such as energy consumption, device cost, spectrum efficiency, and latency, are also crucial to meeting the demands of various communication scenarios. Next-generation systems and wireless communication technologies will need to support a greater number of users and devices than existing wireless networks. Summary of the Invention

[0003] The present application relates to methods, systems, and devices for wireless communications with extended identifiers. The disclosed technology describes methods that can be implemented at multiple mobile devices (or terminals, or user equipment) or multiple networks (such as base stations, gNodeBs) to support more diverse user scenarios.

[0004] In one aspect, a wireless communication method is provided that includes transmitting, by a network device to a user equipment, configuration information including an indication of a long identifier having a length greater than a length of a short identifier.

[0005] In another aspect, a wireless communication method is provided, comprising: receiving, by a user device, configuration information from a network device, the configuration information comprising an indication of a long identifier having a length greater than a length of a short identifier; and applying the long identifier in communications with the network device, the communications with the network device occurring after receipt of the configuration information.

[0006] In another aspect, a wireless communication apparatus is disclosed that includes a processor configured to perform the disclosed method.

[0007] In another aspect, a computer-readable medium having code stored thereon is disclosed. The code, when executed by a processor, causes the processor to perform the method described herein.

[0008] The above-described aspects and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Examples of a base station (BS) and a user equipment (UE) in wireless communications based on some embodiments of the disclosed technology are shown.

[0010] Figure 2 An example of a block diagram of a portion of an apparatus in accordance with some embodiments of the disclosed technology is shown.

[0011] Figure 3 An example of a wireless communication scheme performed at a network device based on some embodiments of the disclosed technology is shown.

[0012] Figure 4 An example of a wireless communication scheme performed at a user equipment based on some embodiments of the disclosed technology is shown.

[0013] 5a to 5c illustrate examples of extended identifiers according to some embodiments of the disclosed technology.

[0014] Figure 6-11 An example of communication between a user device and a network device is shown. DETAILED DESCRIPTION

[0015] The disclosed technology provides implementations and examples of wireless communication schemes using extended identifiers. In wireless communications, identifiers can be used for signaling and data transmission. Some implementations of the disclosed technology suggest techniques related to radio network temporary identifiers. Radio network temporary identifiers are used in the network to identify specific UEs within a cell during RRC (Radio Resource Control) reconfiguration, RRC recovery, random access, and RRC reestablishment procedures. Radio network temporary identifiers are also used by UEs to receive system information and paging.

[0016] With the recent development of wireless communications, the number of users within a specific cell is increasing with the emergence of more diverse user scenarios (such as vehicle connectivity, aircraft connectivity, and IoT connectivity). Existing radio network temporary identifiers may not be sufficient to identify all UEs within a specific cell, so the use of extended radio network temporary identifiers is needed. The disclosed technology proposes a wireless communication technology based on an extended identifier, which extends the radio network temporary identifier and applies the extended radio network temporary identifier in signaling and data transmission.

[0017] Figure 1 An example of a wireless communication system (e.g., a 5G or NR cellular network) is shown that includes a base station (BS) 120 and one or more user equipment (UEs) 111, 112, and 113. In some embodiments, the UE uses an implementation of the disclosed technology (131, 132, 133) to access the BS (e.g., a network), which then enables subsequent communication from the BS to the UE (141, 142, 143). The UE can be, for example, a smartphone, a tablet, a mobile computer, a machine-to-machine (M2M) device, an Internet of Things (IoT) device, etc.

[0018] Figure 2An example of a block diagram representation of a portion of an apparatus is shown. An apparatus 210, such as a base station or wireless device (or UE), may include processor electronics 220, such as a microprocessor, that implements one or more techniques presented in this application. The apparatus 210 may include transceiver electronics 230 to send and / or receive wireless signals via one or more communication interfaces, such as antennas 240. The apparatus 210 may include other communication interfaces for transmitting and receiving data. The apparatus 210 may include one or more memories (not explicitly shown) configured to store information, such as data and / or instructions. In some embodiments, the processor electronics 220 may include at least a portion of the transceiver electronics 230. In some embodiments, at least some of the disclosed techniques, modules, or functions are implemented using the apparatus 210.

[0019] Figure 3 An example of a wireless communication scheme performed at a network device based on some embodiments of the disclosed technology is shown. At step 310, the network device transmits configuration information to a user equipment, the configuration information including an indication of a long identifier having a length greater than a short identifier length.

[0020] Figure 4 An example of a wireless communication scheme performed at a UE based on some embodiments of the disclosed technology is shown. At step 410, the UE receives configuration information from a network device, the configuration information including an indication of a long identifier having a length greater than a short identifier. At step 420, the UE applies the long identifier in communications with the network device, the communications with the network device occurring after receiving the configuration information.

[0021] In some embodiments, the indication includes an indicator notifying the UE to use a long identifier instead of a short identifier. In some embodiments, the indication includes a long identifier. In some embodiments, the indication includes the indicator and the long identifier. In some embodiments, the configuration information includes information about one or more radio network temporary identifiers (RNTIs) (e.g., the length of the RNTI). In some embodiments, the configuration information may be included in at least one of a MIB (Master Information Block), a SIB1 (System Information Block Type 1), or dedicated RRC signaling (e.g., an RRC reconfiguration message).

[0022] In order to provide a wireless communication technology with an extended identifier (e.g., an extended radio network temporary identifier), it is necessary to consider the following items 1-3 regarding the type of the extended radio network temporary identifier, the definition of the extended radio network temporary identifier, and how to instruct the UE to apply the extended radio network temporary identifier. In the following description, the radio network temporary identifier (RNTI) is used as the main extendable identifier, but other identifiers can also be extended.

[0023] Item 1: Examples of types of wireless network temporary identifiers that may have extended lengths are as follows:

[0024] 1. P-RNTI (Paging Radio Network Temporary Identifier), which is used for paging and system information change notification.

[0025] 2. SI-RNTI (System Information Radio Network Temporary Identifier), which is used for broadcasting system information.

[0026] 3. RA-RNTI (Random Access Radio Network Temporary Identifier), which is used for random access response.

[0027] 4. C-RNTI (Cell Access Radio Network Temporary Identifier), which is used in RRC (Radio Resource Control) reconfiguration process, RRC recovery process, random access process and RRC re-establishment process.

[0028] 5. I-RNTI (Inactive Radio Network Temporary Identifier), which is a reference to the UE context stored in the network and is used for the RRC resumption procedure.

[0029] 6. Temporary C-RNTI (Cell Radio Network Temporary Identifier), which is used for contention resolution during random access.

[0030] 7. CS-RNTI (Configured Scheduled Radio Network Temporary Identifier), which is used for configured scheduled unicast transmission.

[0031] 8. MCS-C-RNTI, which is used for dynamically scheduled unicast transmissions.

[0032] 9. TPC-PUCCH-RNTI, which is used for PUCCH power control.

[0033] 10. TPC-PUSCH-RNTI, which is used for PUSCH power control.

[0034] 11. TPC-SRS-RNTI, which is used for SRS triggering and power control.

[0035] 12. INT-RNTI, which is used to indicate preemption in DL.

[0036] 13. SFI-RNTI, which is used as a slot format indicator on a given cell.

[0037] 14. SP-CSI-RNTI, which is used to activate semi-persistent CSI reporting on PUSCH.

[0038] Project 2: Extending the definition of wireless network temporary identifiers

[0039] 1. P-RNTI (Paging Radio Network Temporary Identifier): A fixed 24-bit, 32-bit, or 64-bit hexadecimal value (eg, FFFFFE, FFFFFFFE, or FFFFFFFFFFFFFFFE) is defined as a long P-RNTI.

[0040] 2. SI-RNTI (System Information Radio Network Temporary Identifier): A fixed 24-bit, 32-bit, or 64-bit hexadecimal value (eg, FFFFFF, FFFFFFFF, or FFFFFFFFFFFFFFFF) is defined as long SI-RNTI.

[0041] 3. RA-RNTI (Random Access Radio Network Temporary Identifier): The RA-RNTI in NR is calculated based on the following formula:

[0042] RA-RNTI = 1 + s_id + 14 × t_id + 14 × 80 × f_id + 14 × 80 × 8 × ul_carrier_id, where s_id is the index of the first OFDM symbol of the PRACH opportunity (0 ≤ s_id < 14), t_id is the index of the first time slot of the PRACH opportunity in the system frame (0 ≤ t_id < 80), f_id is the index of the PRACH opportunity in the frequency domain (0 ≤ f_id < 8), and ul_carrier_id is the UL carrier used for random access preamble transmission (0 indicates NUL carrier and 1 indicates SUL carrier).

[0043] Two possible modifications can be considered to obtain a long RA-RNTI:

[0044] Modification 1: A new calculation formula has been introduced. The following formula is an example of a new calculation formula that is different from the existing formula.

[0045] RA-RNTI = 1 + s_id + 4 × 14 × t_id + 4 × 14 × 80 × f_id + 14 × 80 × 8 × ul_carrier_id, where s_id is the index of the first OFDM symbol of the PRACH opportunity (0 ≤ s_id < 14), t_id is the index of the first time slot of the PRACH opportunity in the system frame (0 ≤ t_id < 80), f_id is the index of the PRACH opportunity in the frequency domain (0 ≤ f_id < 8), and ul_carrier_id is the UL carrier used for random access preamble transmission (0 indicates NUL carrier and 1 indicates SUL carrier).

[0046] Modification 2: The existing calculation formula is applied with an expanded value range of the parameters used in the existing calculation formula.

[0047] The RA-RNTI associated with the PRACH opportunity where the random access preamble is transmitted is calculated as:

[0048] RA-RNTI = 1 + s_id + 14 × t_id + 14 × 80 × f_id + 14 × 80 × 8 × ul_carrier_id, where s_id is the index of the first OFDM symbol of the PRACH opportunity (0 ≤ s_id < 14), t_id is the index of the first time slot of the PRACH opportunity in the system frame (0 ≤ t_id < 160), f_id is the index of the PRACH opportunity in the frequency domain (0 ≤ f_id < 32), and ul_carrier_id is the UL carrier used for random access preamble transmission (0 indicates NUL carrier and 1 indicates SUL carrier).

[0049] New calculation formulas and existing calculation formulas can be specified in the specification and will be known in advance by the UE and network equipment before signaling occurs.

[0050] 4. C-RNTI (Cell Access Radio Network Temporary Identifier):

[0051] A long RNTI is introduced, which can be configured as RA-RNTI, temporary C-RNTI, C-RNTI, CS-RNTI.

[0052] A 24-bit RNTI was introduced.

[0053] RNTI-Value-extended information element

[0054]

[0055] A 32-bit long RNTI is introduced, which can be configured as RA-RNTI, temporary C-RNTI, C-RNTI, and CS-RNTI.

[0056] RNTI-Value-extended information element

[0057]

[0058] A 64-bit long RNTI is introduced, which can be configured as RA-RNTI, temporary C-RNTI, C-RNTI, and CS-RNTI.

[0059] RNTI-Value-extended information element

[0060]

[0061] Project 3: How to instruct UE to apply extended radio network temporary identifier

[0062] 1. P-RNTI (Paging Radio Network Temporary Identifier)

[0063] An indication is broadcast in the system information indicating that the extended P-RNTI needs to be used. Upon receiving this indication, the UE applies the extended P-RNTI when receiving paging and system information change notifications.

[0064] 2. SI-RNTI (System Information Radio Network Temporary Identifier)

[0065] An indication is broadcast in the MIB (Master Information Block) indicating that the extended SI-RNTI needs to be used. Upon receiving such an indication, the UE applies the extended SI-RNTI when receiving system information.

[0066] 3. RA-RNTI (Random Access Radio Network Temporary Identifier)

[0067] An indication is broadcast in system information (e.g., MIB, SIB1, or other system information) indicating that an extended RA-RNTI needs to be used. Upon receiving the indication, the UE calculates the RA-RNTI based on the newly introduced calculation formula, or calculates the RA-RNTI parameter based on the existing formula with a parameter whose value range has been extended, and receives a random access response based on the calculated RA-RNTI.

[0068] 4. C-RNTI (Cell Access Radio Network Temporary Identifier)

[0069] i) ReconfigurationWithSync: The extended C-RNTI is added to ReconfigurationWithSync. After receiving the extended C-RNTI via ReconfigurationWithSync, the UE applies it to the subsequent RRC reconfiguration procedure, handover procedure, RRC recovery procedure, random access procedure, and RRC reestablishment procedure. An example of configuring ReconfigurationWithSync can be implemented as follows:

[0070]

[0071] ii) Random Access Procedure: An extended C-RNTI MAC CE is introduced, which includes a single field defined as follows:

[0072] 5a to 5c illustrate extended C-RNTI MAC CEs, namely, a 24-bit C-RNTI MAC CE, a 32-bit C-RNTI MAC CE, and a 64-bit C-RNTI MAC CE, respectively.

[0073] iii) RRC recovery procedure: An extended variable VarResumeMAC-Input-extended is introduced, where the source C-RNTI is set to the extended C-RNTI.

[0074] The UE variable VarResumeMAC-Input-Extended specifies the input used to generate resumeMAC-I during the RRC connection resumption procedure.

[0075] VarResumeMAC-Input-Extended variable

[0076]

[0077] iv)RRC re-establishment process:

[0078] An extended variable VarShortMAC-Input-Extended is introduced, where the source C-RNTI is set to the extended C-RNTI. The UE variable VarShortMAC-Input-Extended specifies the input used to generate shortMAC-I during the RRC connection re-establishment procedure in the NTN.

[0079] VarShortMAC-Input-Extended variable

[0080]

[0081] The RRCReestablishmentRequest1 message including the extended C-RNTI is introduced and sent via the UL-CCCH1-Message.

[0082] -RRCReestablishmentRequest1

[0083] The RRCReestablishmentRequest1 message is used to request re-establishment of an RRC connection.

[0084] Signaling radio bearer: SRB0

[0085] RLC-SAP:TM

[0086] Logical channel: CCCH1

[0087] Direction: UE to network

[0088] RRCReestablishmentRequest1 message

[0089]

[0090] -UL-CCCH1-Message

[0091] The UL-CCCH1-Message class is a set of 64-bit RRC messages that can be sent from the UE to the network on the uplink CCCH1 logical channel.

[0092]

[0093] v) Handover process: An extended C-RNTI is added to the HandoverPreparationInformation message.

[0094] HandoverPreparationInformation

[0095] This message is used to convey NR RRC information used by the target gNB during handover preparation, including UE capability information. This message is also used to transfer information between the CU and DU.

[0096] Direction: Source gNB / source RAN to target gNB or CU to DU.

[0097] HandoverPreparationInformation message

[0098]

[0099]

[0100]

[0101] Depending on the type of configuration message and the type of one or more radio network temporary identifiers, the proposed technology may be performed in various ways.The following embodiments are discussed with reference to the accompanying drawings.

[0102] Implementation Method 1

[0103] An indication may be included in the MIB to indicate that long SI-RNTI will be used in the cell. The length of the long SI-RNTI will be defined in the specification. This indication may be a 1-bit indication. Figure 6An example of communication between a user equipment and a network device is shown. The network device transmits a MIB to the UE, which includes an indication that a long SI-RNTI needs to be used. The network device then scrambles the PDCCH and PDSCH containing SIB1 and other SI using the long SI-RNTI. The network device then transmits SIB1 and other SI to the UE. The UE monitors the candidate PDCCH using the CRC scrambled by the SI-RNTI to receive SIB1 and other SI. Although Figure 6 The UE monitoring is shown to occur after the network device transmits SIB1 and other SI, but the UE monitoring can even be initiated before the network device transmits SIB1 and other SI. When receiving SIB1 and other SI, the UE can use the long SI-RNTI to decode SIB1 and other SI.

[0104] Implementation Method 2

[0105] An indication may be included in the MIB to indicate whether a set of long RNTIs will be used for the cell. The length of the long RNTI will be defined in the specification. The set of RNTIs will be defined in the specification and may include at least one of the following: SI-RNTI, C-RNTI, RA-RNTI, Temporary C-RNTI, P-RNTI, I-RNTI. This indication may be a 1-bit indication.

[0106] Implementation 3

[0107] An indication may be included in SIB1 to indicate that one or more long RNTIs need to be used. Examples of the indicated RNTI may include at least one of the following: RA-RNTI, C-RNTI, P-RNTI or I-RNTI.

[0108] Figure 7 An example of communication between a user equipment and a network device is shown. The network device transmits SIB1 to the UE, which includes an indication that a long P-RNTI needs to be used. The P-RNTI is used by the UE to receive a paging message. The network device scrambles the PDCCH and PDSCH containing the paging message using the long P-RNTI. The network device then transmits the paging message or system information change notification transmitted using the long P-RNTI via DCI. The UE monitors the candidate PDCCH using the CRC scrambled by the long P-RNTI to receive the paging message (or system information change notification). When receiving the paging message or system information change notification, the UE can decode the paging message or system information change notification using the long P-RNTI.

[0109] Figure 8An example of communication between a user equipment and a network device is shown. The network device transmits SIB1 to the UE, which includes an indication that a long RA-RNTI needs to be used. In some embodiments, the indication also includes the length of the RA-RNTI. In this case, including the length of the RA-RNTI helps the UE select a formula to calculate the long RA-RNTI. The RA-RNTI is used during a random access procedure in which the network device generates a random access response as a response to a random access preamble transmitted by the UE. Reference Figure 8 In response to receiving SIB1, the UE transmits a random access preamble to the network. The network calculates the long RA-RNTI based on a corresponding formula. On the UE side, after transmitting the random access preamble, the UE also calculates the long RA-RNTI based on a corresponding formula. As discussed previously, the formula for calculating the long identifier is stored in the specification and will be known in advance by the UE and network equipment before they perform their operations. After calculating the RA-RNTI, the network transmits a random access response based on the calculated RA-RNTI. The UE receives the random access response based on the calculated RA-RNTI.

[0110] Implementation 4

[0111] One or more indications may be included in the RRC reconfiguration message to indicate that the long RNTI needs to be used. Examples of the indicated RNTI may include at least one of the following: RA-RNTI, C-RNTI, CS-RNTI, or I-RNTI.

[0112] Figure 9 An example of communication between a user equipment, network device 1 and network device 2 is shown. Network device 1 (source network) transmits a reconfiguration message including a long C-RNTI. For example, the reconfiguration message may include ReconfigurationWithSync. The UE then releases from the RRC_CONNECTED state to the RRC_INACTIVE state via an RRCRelease message sent from network device 1. The UE then wishes to resume from the RRC_INACTIVE state and initiates a random access procedure. When calculating MAC-I, the UE uses VarResumeMAC-Input-Extended as an input variable, in which the source C-RNTI is set to the extended C-RNTI received from network device 1. The UE then sets resumeMAC-I to the 16 least significant bits of MAC-I and sends it to network device 2 (target network) via an RRCResumeRequest message.

[0113] Figure 10 Another example of communication between a user equipment and a network device is shown. The network device transmits a reconfiguration message including a long C-RNTI. For example, the reconfiguration message may include ReconfigurationWithSync. Then, a radio link failure occurs. To reestablish the RRC connection, the UE initiates a random access procedure. Then, when calculating the MAC-I, the UE uses VarShortMAC-Input-Extended as an input variable, in which the source C-RNTI is set to the extended C-RNTI received from the network device. The UE then sets the shortMAC-I to the 16 least significant bits of the MAC-I and sends it to the network device via an RRCReestablishmentRequest1 message.

[0114] Figure 11 Another example of communication between a user equipment and a network device is shown. The UE is configured with a long C-RNTI via ReconfigurationWithSync. Then, when uplink data arrives, the UE determines the format of the C-RNTI MAC CE format based on the determined C-RNTI length, initiates a random access procedure, and transmits an extended C-RNTI control element after receiving the random access procedure.

[0115] exist Figure 9-11 In the example shown in , in the ReconfigurationWithSync message, the long C-RNTI is included along with an indication to inform the UE that the long C-RNTI will be used in subsequent procedures. In this case, after the network device configures the long C-RNTI to the UE, the original short C-RNTI and the long C-RNIT will be available on the UE side. This indication is also configured in the ReconfigurationWithSync message to inform the UE to use the longer C-RNTI.

[0116] Implementation 5

[0117] A special value of an existing signaling field may be used to indicate the length of the RNTI. The special value may be a reserved value, an invalid value in a previous release / version of the specification, or a value with a specific meaning.

[0118] Implementation Method 6

[0119] A combination of special values ​​of multiple existing signaling fields may be used to indicate the length of the RNTI. The special value may be a reserved value, an invalid value in a previous release / version of the specification, or a value with a specific meaning.

[0120] Implementation 7

[0121] The length of the RNTI is associated with the frequency band, in which case the length of the RNTI for a specific frequency band is explicitly specified in the specification.

[0122] Implementation 8

[0123] The length of the RNTI is associated with the cell type, in which case the length of the RNTI for a particular cell type is explicitly specified in the specification. The cell type refers to either an NTN cell or a TN cell.

[0124] In the above embodiment, the length of the long RNTI may be specified in the specification (eg, 24 bits, 32 bits, or 64 bits).

[0125] In some embodiments (e.g., embodiments 3 and 4 above), the indication may be configured per cell, per BWP, or per CORESET. In some embodiments (e.g., embodiments 3 and 4 above), separate indications may be introduced for different types of RNTIs. In some embodiments (e.g., embodiments 3 and 4 above), the indication may be a one-bit indication to indicate whether a long RNTI will be used, or the indication may be a bitmap where each bit is associated with a type of RNTI and each bit is used to indicate the length of the corresponding RNTI.

[0126] In some embodiments, the UE determines the length of one or more RNTIs. Then, based on the determined length of the C-RNTI or based on a configuration parameter that can be used to determine the length of the C-RNTI, the UE further determines a CCCH message for the RRC connection reestablishment request. For example, there will be two types of RRCConnectionReastablishmentRequest messages. The first type of RRCConnectionReastablishmentRequest message will be used for a 16-bit C-RNTI, while the second type of RRCConnectionReastablishmentRequest (e.g., RRCConnectionReastablishmentRequest1) message will be used for a long C-RNTI (e.g., 24 bits, 32 bits, or 64 bits, which may be specified in the specification).

[0127] In some embodiments, based on the determined length of the I-RNTI or based on a configuration parameter that can be used to determine the length of the I-RNTI, the UE further determines a CCCH message for the RRC connection resumption request. For example, there will be three types of RRCConnectionResumeRequest messages. A first type of RRCConnectionResumeRequest message will be used for a 24-bit truncated I-RNTI, a second type of RRCConnectionResumeRequest (e.g., RRCConnectionResumeRequest1) message will be used for a 40-bit full I-RNTI, and a third type of RRCConnectionResumeRequest (e.g., RRCConnectionResumeRequest2) message will be used for a long I-RNTI (e.g., 64 bits, which will be specified in the specification).

[0128] During the random access procedure (RACH), the C-RNTI MAC CE will be used (e.g., included in MsgA and / or MsgB in a 2-step RACH procedure, or included in Msg3 in a 4-step RACH procedure). Based on the length of the C-RNTI, the C-RNTI MAC CE will use different formats. Therefore, the following enhancements can be considered in the transmission and reception of the C-RNTI MAC CE:

[0129] Based on the determined length of the C-RNTI or based on a configuration parameter that may be used to determine the length of the C-RNTI, the UE may further determine a format or type of a C-RNTI MAC CE to be transmitted in the RACH procedure.

[0130] Based on the determined length of the C-RNTI or based on a configuration parameter that can be used to determine the length of the C-RNTI, the network device may further determine the format or type of the C-RNTI MAC CE to be transmitted in the RACH procedure.

[0131] Based on the determined length of the C-RNTI or based on a configuration parameter that can be used to determine the length of the C-RNTI, the UE further determines the format or type of the C-RNTI MAC CE to be received in the RACH procedure.

[0132] Based on the determined length of the C-RNTI or based on a configuration parameter that can be used to determine the length of the C-RNTI, the network further determines the format or type of the C-RNTI MAC CE to be received in the RACH procedure.

[0133] In order to distinguish the two types of C-RNTI MAC CEs, the following two implementations may be considered.

[0134] Embodiment 1: Different logical channel IDs will be used for C-RNTI MAC CEs with different lengths. In this case, the receiving side can distinguish the two types of C-RNTI MAC CEs based on the logical channel ID in the MAC subheader.

[0135] Embodiment 2: The same logical channel ID will be used for the C-RNTI MAC CE. In this case, the receiving side should determine the type of the C-RNTI MAC CE based on the configuration parameters or the length of the C-RNTI MAC CE, which is determined before the RA procedure.

[0136] During the RACH process, the RA-RNTI will be used to receive MsgB (in 2-step RACH) and / or Msg2 (in 4-step RACH). The RA-RNTI is determined based on the formula defined in the 3GPP specifications (e.g., 36.321, 38.321). Considering that RA-RNTIs of different lengths may be associated with different formulas, the following enhancements can be considered:

[0137] On the UE side, based on the determined RA-RNTI length or based on a configuration parameter that can be used to determine the RA-RNTI length, the UE further determines the formula for RA-RNTI calculation based on the RA-RNTI length. Different formulas will be given in the specification for RA-RNTIs with different lengths.

[0138] On the network device side, before transmitting MsgB or Msg2, the network device determines a formula for RA-RNTI calculation based on the length of the RA-RNTI.

[0139] The above different formulas may also include formulas with the same parameters but different value ranges.

[0140] For security aspects, different formulas may be defined for C-RNTIs with different lengths in at least one of the following aspects: key generation algorithm, short MAC-I calculation, recovery MAC-I calculation.

[0141] Therefore, the following enhancements can be considered:

[0142] On the UE side, based on the determined C-RNTI length or based on the configuration parameters that can be used to determine the C-RNTI length, the UE further determines the formula for the key generation algorithm and / or short MAC-I calculation and / or recovery MAC-I calculation.

[0143] On the network device side, based on the determined C-RNTI length or based on the configuration parameters that can be used to determine the C-RNTI length, the network device further determines a formula for a key generation algorithm and / or a short MAC-I calculation and / or a recovered MAC-I calculation.

[0144] For scrambling operations, since RNTI (e.g., C-RNTI, RA-RNTI, CS-RNTI) will be used to scramble PDSCH and / or PUSCH and / or PDCCH transmissions, and RNTIs of different lengths can be associated with different scrambling methods, the following enhancements can be considered.

[0145] On the UE side, based on the determined RNTI length or based on a configuration parameter that can be used to determine the RNTI length, the UE further determines a scrambling method to be used for the PDSCH and / or PUSCH and / or PDCCH. Here, RNTI may refer to SI-RNTI, C-RNTI, RA-RNTI, CS-RNTI, P-RNTI, or I-RNTI.

[0146] On the network side, based on the determined RNTI length or based on a configuration parameter that can be used to determine the RNTI length, the network further determines a scrambling method to be used for the PDSCH and / or PUSCH and / or PDCCH. Here, RNTI may refer to SI-RNTI, C-RNTI, RA-RNTI, CS-RNTI, P-RNTI, or I-RNTI.

[0147] Additional features and embodiments of the above-described methods / techniques are described below using a clause-based description format.

[0148] 1. A wireless communication method, comprising: transmitting, by a network device, configuration information to a user equipment, the configuration information comprising an indication of a long identifier having a length greater than a length of a short identifier.

[0149] 2. A wireless communication method according to clause 1, wherein the indication comprises an indicator to inform the user equipment to use a long identifier instead of a short identifier.

[0150] 3. A method of wireless communication as described in clause 1, wherein the indication comprises a long identifier.

[0151] 4. The wireless communication method of clause 1, wherein the configuration information is included in a MIB (Master Information Block).

[0152] 5. A wireless communication method according to clause 1, wherein the configuration information is included in a SIB1 (System Information Block).

[0153] 6. A wireless communication method according to clause 1, wherein the configuration information is included in dedicated RRC (Radio Resource Control) signaling.

[0154] 7. The wireless communication method of clause 1, further comprising, after transmitting the configuration information, calculating the long identifier using a formula.

[0155] 8. The wireless communication method of clause 1, further comprising, after transmitting the configuration information, determining scrambling information for at least one of a PDSCH (Physical Downlink Shared Channel), a PUSCH (Physical Uplink Shared Channel), or a PDCCH (Physical Downlink Control Channel) based on the configuration information.

[0156] 9. The wireless communication method of clause 1, further comprising, after transmitting the configuration information, determining a format or type of a C-RNTI MAC CE (Cell Radio Network Temporary Identifier Medium Access Control Element) based on the configuration information.

[0157] 10. The wireless communication method of clause 1, further comprising, after transmitting the configuration information, determining a formula for at least one of a key generation algorithm, a short MAC-I calculation, or a recovery MAC-I calculation based on the configuration information.

[0158] 11. The wireless communication method of clause 1, wherein the long identifier comprises a long Radio Network Temporary Identifier (RNTI).

[0159] 12. A wireless communication method according to clause 1, wherein the indication is configured for each cell.

[0160] 13. The wireless communication method of clause 1, wherein the indication is configured per BWP (Bandwidth Part).

[0161] 14. A wireless communication method according to clause 1, wherein the indication is configured for each CORESET (Control Resource Set).

[0162] 15. The wireless communication method of clause 1, wherein the indication is a one-bit indication.

[0163] 16. The wireless communication method of clause 1, wherein the indication is in a bitmap.

[0164] 17. The wireless communication method of clause 1, wherein the configuration information includes a length of the long identifier.

[0165] 18. A wireless communication method, comprising: receiving, by a user equipment, configuration information from a network device, the configuration information including an indication of a long identifier having a length greater than a short identifier; and applying the long identifier in communications with the network device, the communications with the network device occurring after receipt of the configuration information.

[0166] 19. A method of wireless communication as described in clause 18, wherein the indication comprises an indicator for informing the user equipment to use a long identifier instead of a short identifier.

[0167] 20. A method of wireless communication as described in clause 18, wherein the indication comprises a long identifier.

[0168] 21. A wireless communication method according to clause 18, wherein the configuration information is included in a MIB (Master Information Block).

[0169] 22. A wireless communication method according to clause 18, wherein the configuration information is included in a SIB1 (System Information Block).

[0170] 23. A wireless communication method according to clause 18, wherein the configuration information is included in dedicated RRC (Radio Resource Control) signalling.

[0171] 24. The wireless communication method of clause 18, further comprising, after receiving the configuration information, calculating the long identifier using a formula.

[0172] 25. A wireless communication method according to clause 18, further comprising, after receiving the configuration information, determining scrambling information for at least one of a PDSCH (Physical Downlink Shared Channel), a PUSCH (Physical Uplink Shared Channel), or a PDCCH (Physical Downlink Control Channel) based on the configuration information.

[0173] 26. A method of wireless communication as described in clause 18, further comprising, after receiving the configuration information, determining a common control channel (CCCH) message based on the configuration information.

[0174] 27. A wireless communication method according to clause 18, further comprising, after receiving the configuration information, determining a format or type of a C-RNTI MAC CE (Cell Radio Network Temporary Identifier Medium Access Control Element) based on the configuration information.

[0175] 28. The wireless communication method of clause 18, further comprising, after receiving the configuration information, determining a formula for at least one of a key generation algorithm, a short MAC-I calculation, or a recovery MAC-I calculation based on the configuration information.

[0176] 29. A method of wireless communication as described in clause 18, wherein the indication is configured per cell.

[0177] 30. A method of wireless communication as described in clause 18, wherein the indication is configured per BWP (Bandwidth Part).

[0178] 31. A wireless communication method as described in clause 18, wherein the indication is configured per CORESET (Control Resource Set).

[0179] 32. A method of wireless communication as described in clause 18, wherein the configuration information includes a length of the long identifier.

[0180] 33. A communications device comprising a processor configured to implement the method according to any one or more of clauses 1 to 32.

[0181] 34. A computer-readable medium having code stored thereon which, when executed, causes a processor to perform the method according to any one or more of clauses 1 to 32.

[0182] The specification and drawings are to be regarded as illustrative only, where exemplary means example and does not imply ideal or preferred embodiments unless otherwise specified. As used herein, the use of "or" is intended to include "and / or" unless the context clearly dictates otherwise.

[0183] Some embodiments described herein are described in the context of methods or processes that may be implemented in one embodiment by a computer program product embodied in a computer-readable medium, including computer-executable instructions such as program code that are executed by a computer in a network environment. Computer-readable media may include removable and non-removable storage devices, including but not limited to read-only memory (ROM), random access memory (RAM), compact discs (CD), digital versatile discs (DVD), and the like. Thus, the computer-readable medium may include non-temporary storage media. Typically, program modules may include routines, programs, objects, components, data structures, and the like that perform specific tasks or implement specific abstract data types. Computer or processor executable instructions, associated data structures, and program modules represent examples of program code for executing the method steps disclosed herein. A specific sequence of such executable instructions or associated data structures represents an example of corresponding actions for implementing the functions described in such steps or processes.

[0184] Some disclosed embodiments can be implemented as devices or modules using hardware circuits, software or a combination thereof. For example, a hardware circuit implementation may include discrete analog and / or digital components that are, for example, integrated as a part of a printed circuit board. Alternatively, or additionally, the disclosed components or modules may be implemented as application specific integrated circuits (ASICs) and / or field programmable gate arrays (FPGAs). Some embodiments may additionally or alternatively include a digital signal processor (DSP), which is a dedicated microprocessor with an architecture optimized for the operational needs of digital signal processing associated with the disclosed functions of the present application. Similarly, the various components or subcomponents within each module may be implemented with software, hardware or firmware. The connection between the modules and / or the components within the modules may be provided using any connection method and medium known in the art, including but not limited to communication over the Internet, wired or wireless networks using appropriate protocols.

[0185] Although this application contains many details, these should not be interpreted as limitations on the scope of the claimed invention or what may be claimed, but rather as descriptions of features for specific embodiments. Certain features described in this application in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, the various features described in the context of a single embodiment may also be implemented individually or in any suitable subcombination in multiple embodiments. In addition, although the above-mentioned features may be described as working in certain combinations, and even initially claimed as such, in some cases, one or more features from the combination may be deleted from the combination, and the combination may involve variations of subcombinations or subcombinations. Similarly, although operations are described in a particular order in the accompanying drawings, this should not be understood as requiring that the operations be performed in the particular order or sequence shown, or that all of the operations shown be performed to obtain the desired result.

[0186] Only a few implementations and examples are described, and other implementations, enhancements, and variations can be made based on what is described and illustrated in this disclosure.

Claims

1. A wireless communication method, the method comprising: The network device transmits configuration information to the user equipment, wherein the configuration information includes an indication indicating that a long radio network temporary identifier having a length greater than a short radio network temporary identifier needs to be used, wherein the indication is a one-bit indication, wherein The long wireless network temporary identifier is derived by the user equipment according to the received configuration information based on a first calculation formula, where an extended value range is applied in the first calculation formula; After transmitting the configuration information, receiving a random access preamble from the user equipment; and A random access response is transmitted by the network device to the user equipment based on the long radio network temporary identifier.

2. The wireless communication method according to claim 1, wherein: The configuration information is included in the Master Information Block MIB.

3. The wireless communication method according to claim 1, wherein: The configuration information is included in the system information block SIB1.

4. The wireless communication method according to claim 1, wherein: The configuration information is included in dedicated radio resource control (RRC) signaling.

5. The wireless communication method according to claim 1 , further comprising: After the configuration information is transmitted, scrambling information of at least one of a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), and a physical downlink control channel (PDCCH) is determined based on the configuration information. 6 . The wireless communication method according to claim 1 , further comprising: after transmitting the configuration information, determining a format or type of a Cell-Radio Network Temporary Identifier (C-RNTI) MAC CE based on the configuration information.

7. The wireless communication method according to claim 1, further comprising: After transmitting the configuration information, a formula for at least one of a key generation algorithm, a short MAC-I calculation, and a recovery MAC-I calculation is determined based on the configuration information.

8. The wireless communication method according to claim 1, wherein: The indication is configured for each cell.

9. The wireless communication method according to claim 1, wherein: The indication is configured for each bandwidth part BWP.

10. The wireless communication method according to claim 1, wherein: The indication is configured for each control resource set CORESET.

11. The wireless communication method according to claim 1, wherein: The configuration information includes the length of the long wireless network temporary identifier.

12. A wireless communication method, the method comprising: Receiving, by a user equipment, configuration information from a network equipment, the configuration information including an indication indicating that a long radio network temporary identifier having a length greater than a length of a short radio network temporary identifier needs to be used, the indication being a one-bit indication; After receiving the configuration information, the user equipment transmits a random access preamble to the network device; and receiving, by the user equipment, a random access response from the network equipment based on the long radio network temporary identifier, The long wireless network temporary identifier is derived based on a first calculation formula, wherein an extended value range is applied in the first calculation formula.

13. The wireless communication method according to claim 12, wherein: The configuration information is included in the Master Information Block MIB.

14. The wireless communication method according to claim 12, wherein: The configuration information is included in the system information block SIB1.

15. The wireless communication method according to claim 12, wherein: The configuration information is included in dedicated radio resource control (RRC) signaling.

16. The wireless communication method according to claim 12, further comprising: After receiving the configuration information, scrambling information of at least one of a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), and a physical downlink control channel (PDCCH) is determined based on the configuration information.

17. The wireless communication method according to claim 12, further comprising: After receiving the configuration information, a common control channel CCCH message is determined based on the configuration information.

18. The wireless communication method according to claim 12, further comprising: After receiving the configuration information, the format or type of a cell access radio network temporary identifier medium access control element C-RNTI MAC CE is determined based on the configuration information.

19. The wireless communication method according to claim 12, further comprising: After receiving the configuration information, a formula for at least one of a key generation algorithm, a short MAC-I calculation, and a recovery MAC-I calculation is determined based on the configuration information.

20. The wireless communication method according to claim 12, wherein: The indication is configured for each cell.

21. The wireless communication method according to claim 12, wherein: The indication is configured for each bandwidth part BWP.

22. The wireless communication method according to claim 12, wherein: The indication is configured for each control resource set CORESET.

23. The wireless communication method according to claim 12, wherein: The configuration information includes the length of the long wireless network temporary identifier.

24. A communication device comprising a processor and a memory, wherein the processor is configured to read instructions from the memory to implement the method according to any one of claims 1 to 23.

25. A computer readable medium having code stored thereon which, when executed, causes a processor to implement the method of any one of claims 1 to 23.

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