Cell access method, apparatus, terminal and network side device

Abstract

The application discloses a cell access method, device, terminal and network side equipment, and belongs to the communication technical field. The cell access method of the application embodiment comprises the following steps: a terminal sends a random access request at a first uplink frequency unit; the terminal receives a random access response at a first downlink frequency unit based on RNTI; the RNTI satisfies at least one of the following conditions: the length of the RNTI is greater than 16 bits; the RNTI is an RNTI specially used for the first downlink frequency unit; the index of the first uplink frequency unit used for calculating the RNTI is the same as the index of a second uplink frequency unit; a first cell where the first uplink frequency unit is located also comprises the second uplink frequency unit; the result determined according to the modulus operation of a value is obtained by the RNTI, and the value is a value calculated based on the index of the first uplink frequency unit.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a cell access method, apparatus, terminal, and network-side equipment. Background Technology

[0002] During the access process, the terminal sends a random access request on the uplink frequency unit (such as a carrier), and then receives a random access response based on the Radio Network Temporary Identifier (RNTI). For example, in a four-step random access process, message 2 (Msg2) is received based on the Random Access RNTI (RA-RNTI), and in a two-step random access process, MsgB is received based on the B-RNTI (MsgB-RNTI). However, with changes in cell models, some cells may include more frequency units, which could lead to insufficient RNTIs and affect the terminal's access performance. Summary of the Invention

[0003] This application provides a cell access method, apparatus, terminal, and network-side equipment, which can solve the problem of poor terminal access performance.

[0004] Firstly, a cell access method is provided, including:

[0005] The terminal sends a random access request in the first uplink frequency unit;

[0006] The terminal receives a random access response in the first downlink frequency unit based on the RNTI, wherein the RNTI satisfies at least one of the following:

[0007] The length of the RNTI is greater than 16 bits;

[0008] The RNTI is a dedicated RNTI for the first downlink frequency unit;

[0009] The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit;

[0010] The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

[0011] Secondly, a cell access method is provided, including:

[0012] The network-side device sends a random access request in the first uplink frequency unit;

[0013] The network-side device sends a random access response based on the RNTI in the first downlink frequency unit, wherein the RNTI satisfies at least one of the following:

[0014] The length of the RNTI is greater than 16 bits;

[0015] The RNTI is a dedicated RNTI for the first downlink frequency unit;

[0016] The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit;

[0017] The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

[0018] Thirdly, a cell access device is provided, comprising:

[0019] The transmitting module is used to transmit a random access request in the first uplink frequency unit;

[0020] The receiving module is configured to receive a random access response in the first downlink frequency unit based on the RNTI, wherein the RNTI satisfies at least one of the following:

[0021] The length of the RNTI is greater than 16 bits;

[0022] The RNTI is a dedicated RNTI for the first downlink frequency unit;

[0023] The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit;

[0024] The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

[0025] Fourthly, a cell access device is provided, comprising:

[0026] The receiving module is used to send a random access request in the first uplink frequency unit;

[0027] The transmitting module is configured to transmit a random access response in the first downlink frequency unit based on a Radio Network Temporary Identifier (RNTI), wherein the RNTI satisfies at least one of the following:

[0028] The length of the RNTI is greater than 16 bits;

[0029] The RNTI is a dedicated RNTI for the first downlink frequency unit;

[0030] The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit;

[0031] The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

[0032] Fifthly, a cell access device is provided, the device being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0033] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0034] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to send a random access request in a first uplink frequency unit; and to receive a random access response in a first downlink frequency unit based on an RNTI, wherein the RNTI satisfies at least one of the following: the length of the RNTI is greater than 16 bits; the RNTI is a dedicated RNTI for the first downlink frequency unit; the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell in which the first uplink frequency unit is located further includes the second uplink frequency unit; the RNTI is determined by taking the modulo of a numerical value, wherein the numerical value is a value calculated based on the index of the first uplink frequency unit.

[0035] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0036] A ninth aspect provides a network-side device, including a processor and a communication interface, wherein the communication interface is used to send a random access request in a first uplink frequency unit; and to send a random access response in a first downlink frequency unit based on a Radio Network Temporary Identifier (RNTI), wherein the RNTI satisfies at least one of the following: the length of the RNTI is greater than 16 bits; the RNTI is a dedicated RNTI for the first downlink frequency unit; the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of a second uplink frequency unit, and the first cell in which the first uplink frequency unit is located further includes the second uplink frequency unit; the RNTI is determined by taking the modulo of a value, wherein the value is a value calculated based on the index of the first uplink frequency unit.

[0037] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0038] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0039] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0040] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to perform the steps of the method as described in the first aspect, or the computer program / program product is executed by at least one processor to perform the steps of the method as described in the second aspect.

[0041] In this embodiment, the terminal sends a random access request in the first uplink frequency unit; the terminal receives a random access response in the first downlink frequency unit based on the Radio Network Temporary Identifier (RNTI), wherein the RNTI satisfies at least one of the following: the length of the RNTI is greater than 16 bits; the RNTI is dedicated to the first downlink frequency unit; the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell in which the first uplink frequency unit is located also includes the second uplink frequency unit; the RNTI is determined by taking the modulo of the value, wherein the value is calculated based on the index of the first uplink frequency unit. Since the length of the aforementioned RNTI is greater than 16 bits, it provides sufficient space to support more frequency units within the cell, enabling the terminal to access the cell more effectively and improving its access performance. Furthermore, the RNTI is dedicated to the first downlink frequency unit, ensuring that the RNTI for each downlink frequency unit is independent, supporting the terminal's access to cells containing more frequency units and further enhancing its access performance. The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, supporting the terminal's access to cells containing more uplink frequency units and improving its access performance. Finally, the RNTI is equal to the modulo operation of the value calculated based on the index of the first uplink frequency unit, allowing the RNTI to correspond to more values ​​calculated based on uplink frequency units, supporting the terminal's access to cells containing more uplink frequency units and further improving its access performance. Attached Figure Description

[0042] Figure 1 This is a block diagram of a wireless communication system applicable to embodiments of this application;

[0043] Figure 2 This is a schematic diagram of a random access method provided in an embodiment of this application;

[0044] Figure 3 This is a schematic diagram of another random access method provided in an embodiment of this application;

[0045] Figure 4 This is a flowchart of a cell access method provided in an embodiment of this application;

[0046] Figure 5 This is a schematic diagram of frequency unit association provided in an embodiment of this application;

[0047] Figure 6 This is a schematic diagram of another frequency unit association provided in an embodiment of this application;

[0048] Figure 7This is a flowchart of another cell access method provided in the embodiments of this application;

[0049] Figure 8 This is a structural diagram of a cell access device provided in an embodiment of this application;

[0050] Figure 9 This is a structural diagram of another cell access device provided in the embodiments of this application;

[0051] Figure 10 This is a structural diagram of a communication device provided in an embodiment of this application;

[0052] Figure 11 This is a structural diagram of a terminal provided in an embodiment of this application;

[0053] Figure 12 This is a structural diagram of a network-side device provided in an embodiment of this application. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0055] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0056] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0057] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0058] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines, etc. Wearable devices include: smartwatches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0059] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), and Binding Support. Functions include BSF, Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), and Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform station).It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment. If the name of the core network equipment mentioned in the embodiments of this application changes in subsequent protocol versions (e.g., 6G), it is also within the scope of protection of this application.

[0060] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0061] In some embodiments, a cell may include a cell in a network such as 4G, 5G, 6G, or 7G.

[0062] For example, in 4G, in a cell that supports single cell multi-carrier technology, one carrier is called the anchor carrier, and the rest are called non-anchor carriers.

[0063] In 5G, cells that support Supplementary Uplink (SUL), meaning that a cell can be configured with two uplink carriers, can also be classified as cells that support single cell multi-carrier technology.

[0064] In 6G, for reasons such as discrete spectrum utilization, network energy saving (e.g., a cell containing multiple carriers only transmits common signals on some carriers), and saving resource scheduling signaling overhead, a single-cell multi-carrier or multi-band single-cell model may be considered, such as a cell including 700, 800 or 900MHz of frequency domain resources.

[0065] In some embodiments, the access procedure includes a 4-step random access procedure (4-step RACH), such as... Figure 2As shown, the terminal sends a Physical Random Access Channel (PRACH) preamble to the base station, receives a Random Access Response (RAR) from the base station, adjusts the timing advance carried in the RAR to determine the uplink transmission time, and sends message 3 (Msg3) according to the scheduling configuration carried in it. The Msg3 carries identification information and service request information. Finally, the terminal receives contention resolution information from the base station, marking the completion of the random access procedure.

[0066] In some embodiments, the access procedure includes support for a 2-step random access procedure (RACH), such as... Figure 3 As shown, in the first step, the terminal sends the PRACH Preamble and Msg3 Physical Uplink Shared Channel (PUSCH) to the base station. In the second step, it receives a response message from the base station, including time advance information and an indication of successful access (i.e., the terminal's identifier). If the received terminal identifier matches its own identifier, it indicates that the terminal has successfully accessed the network.

[0067] In the aforementioned 4-step RACH and 2-step RACH, after the terminal sends Msg1 or MsgA, the terminal calculates RA-RNTI or MsgB-RNTI based on information such as the location of the uplink time-frequency resources used in sending Msg1 or MsgA. Within a certain random access response window, the terminal uses RA-RNTI or MsgB-RNTI to listen for Msg2 or MsgB messages on the network side, thereby performing the correct random access procedure.

[0068] In some embodiments, the formula for calculating RA-RNTI is:

[0069] RA-RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id

[0070] In some embodiments, the formula for calculating MsgB-RNTI is:

[0071] MSGB-RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×2

[0072] In the above formula, s_id is the index of the first OFDM symbol of the PRACH resource selected by the terminal for transmitting Msg1 or MsgA (0≤s_id<14), t_id is the index of the first time slot of the PRACH resource selected by the terminal for transmitting Msg1 or MsgA within a system frame (0≤t_id<80), f_id is the frequency domain index of the PRACH resource selected by the terminal for transmitting Msg1 or MsgA (0≤f_id<8), and ul_carrier_id is the uplink carrier number used for transmitting the random access preamble. For example, this value is 0 for normal uplink (NUL) carriers and 1 for supplementary uplink (SUL) carriers.

[0073] In some embodiments, the RNTI is 16 bits long, i.e., the range is 0-65535. Taking RA-RNTI as an example, even in a cell configured with SUL, the effective range of RA-RNTI for NUL is [1, 8960), where 14 × 80 × 8 = 8960, while the effective range of RA-RNTI for SUL is [8960, 17920).

[0074] It should be noted that the above formula is only an example using frequency units as carriers. The embodiments of this application do not limit the specific calculation formula. It can be a calculation formula that has been defined in the protocol or a calculation formula that has been newly defined in the protocol.

[0075] In 6G systems, more optimized and flexible cell models can be adopted, such as modeling N uplink frequency units and M downlink frequency units into a single cell, where N and M are positive integers. This offers the advantage of allowing for flexible, on-demand aggregation of the operator's discrete spectrum and expanding the concept of a cell. This reduces the complexity of terminal operations across multiple carriers within a single cell and increases flexibility, enabling terminals to easily perform cross-carrier scheduling, retransmission, activation / deactivation, and other operations.

[0076] The following description, in conjunction with the accompanying drawings, details the cell access method, apparatus, terminal, and network-side equipment provided in this application through some embodiments and application scenarios.

[0077] Please see Figure 4 , Figure 4 This is a flowchart of a cell access method provided in an embodiment of this application, such as... Figure 4 As shown, it includes the following steps:

[0078] Step 401: The terminal sends a random access request in the first uplink frequency unit.

[0079] Step 402: The terminal receives a random access response in the first downlink frequency unit based on the RNTI, wherein the RNTI satisfies at least one of the following:

[0080] The length of the RNTI is greater than 16 bits;

[0081] The RNTI is a dedicated RNTI for the first downlink frequency unit;

[0082] The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit;

[0083] The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

[0084] The first cell containing the first uplink frequency unit may include one or more uplink frequency units and one or more downlink frequency units. For example, the first cell may include N uplink frequency units and M downlink frequency units, where N and M are positive integers.

[0085] The first uplink frequency unit mentioned above can be a frequency unit in the first cell mentioned above, and the first downlink frequency unit mentioned above can be a downlink frequency unit in the first cell mentioned above.

[0086] In some implementations, the first uplink frequency unit includes at least one uplink carrier, and the first downlink frequency unit includes at least one downlink carrier; or...

[0087] The first uplink frequency unit includes an uplink spectrum bandwidth, and the first downlink frequency unit includes a downlink spectrum bandwidth; or...

[0088] The first uplink frequency unit includes at least one uplink bandwidth part (BWP), and the first downlink frequency unit includes at least one downlink BWP.

[0089] It should be noted that the carrier, spectrum bandwidth, and BWP mentioned above are just examples and do not limit the implementation of the final solution. Depending on the final cell definition, other granularity frequency units are also possible, such as uplink frequency units or uplink random access frequency band resources.

[0090] The above random access response can be Msg2 in a 4-step random access procedure or MsgB in a 2-step random access procedure.

[0091] The above RNTI satisfying at least one of the above terms can be understood as the above RNTI satisfying any one of the above four terms, or the above RNTI satisfying any two or more of the above four terms. For example, in the latter three terms, the length of the RNTI is greater than or equal to 16 bits.

[0092] The above RNTI length is greater than 16 bits. This can be achieved by increasing the length of the RNTI defined in the protocol, such as increasing it to 18 bits, 24 bits, or other lengths, to meet more distinguishing requirements.

[0093] Because the RNTI is longer than 16 bits, it has sufficient space to support a cell containing more frequency units, allowing the terminal to access the cell more effectively and improving its access performance. For example, in 6G, a cell may include multiple uplink frequency units. Since the RNTI is longer than 16 bits, it has more room for value selection, allowing the terminal to be identified effectively even with more uplink frequency units, thus improving its access performance.

[0094] The aforementioned RNTI is a dedicated RNTI for the first downlink frequency unit. Alternatively, the RNTI may correspond only to the first downlink frequency unit, for example: Figure 5 As shown, the two downlink frequency units each correspond to independent RNTIs. This means that the same RNTI value can be used in both downlink frequency unit 1 and downlink frequency unit 2, thus increasing the number of available RNTIs without confusion. For example, a random access Msg1 or MsgA initiated on uplink frequency unit 1, configured to receive Msg2 or MsgB on downlink frequency unit 1, and a random access Msg1 or MsgA initiated on uplink frequency unit 2, configured to receive Msg2 or MsgB on downlink frequency unit 2, will not cause problems even if the calculated RNTI values ​​are the same. This is because downlink frequency unit 1 and downlink frequency unit 2 are inherently separate, and both the terminal and network-side equipment will correctly understand and perform the expected access operation. Therefore, the RNTI space for random access is expanded, providing better performance for a large number of terminal accesses.

[0095] In this way, since the RNTI is dedicated to the first downlink frequency unit, the RNTI corresponding to each downlink frequency unit is independent, which supports the terminal to access cells containing more frequency units, thereby improving the terminal's access performance.

[0096] The fact that the index of the first uplink frequency unit used in the above calculation of RNTI is the same as the index of the second uplink frequency unit can mean that the indices of some uplink frequency units in the same cell are the same for RNTI calculation. For example, taking the uplink frequency unit as a carrier as an example, when the cell notifies the uplink random access carrier index, it directly configures the first three uplink carrier indices as 0, 1, and 2, and for the fourth uplink carrier, it starts sorting from 0 again, for the seventh uplink carrier, it starts sorting from 0 again, and so on. This is equivalent to the values ​​of all uplink random access carrier indices (such as ul_carrier_id) being within the range of 0, 1, and 2, which ensures that the RNTI calculated by substituting into the formula will not exceed the maximum value range of RNTI.

[0097] Since the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, this allows the terminal to access cells with more uplink frequency units, thereby improving the terminal's access performance.

[0098] The result of the above RNTI obtained by taking the modulo of the value can be: RNTI is equal to the result obtained by taking the modulo of the value calculated by the index of the first uplink frequency unit with a preset value, a specific value or a reference value. The preset value, specific value or reference value can be 65535 or other values ​​(such as 60000 or 65000, etc.), which can be agreed by the protocol or configured by the network side device.

[0099] Alternatively, the result of taking the modulo of the above-mentioned RNTI can be determined as follows: RNTI is equal to the result of a preset operation on the result of taking the modulo, such as adding or subtracting a preset value to the result of taking the modulo, or performing weighted operations, so that the final calculated RNTI is associated with the index of the first uplink frequency unit.

[0100] Since RNTI is equal to the result of taking the modulo of the value calculated based on the index of the first uplink frequency unit, RNTI can correspond to more values ​​calculated based on uplink frequency units, so as to support the terminal to access cells containing more uplink frequency units, thereby improving the terminal's access performance.

[0101] It should be noted that in this embodiment, the above steps can support the terminal to access a cell containing more uplink frequency units, thereby improving the terminal's access performance. The more uplink frequency units there are, the more resources can be used for access, the more terminals can be accommodated, and the more resources there are, the less interference and conflict there will be, and the shorter the terminal access latency will be.

[0102] For example, when the number of uplink frequency units that make up a cell increases, the formulas for calculating RA-RNTI and MsgB-RNTI during random access may change. This could involve introducing more variables or expanding the range of values ​​for some variables. In particular, the uplink frequency unit index is likely to expand, for example, to four. Even if the MsgB-RNTI calculation formula provided in the above embodiment is followed, the range of MsgB-RNTI for the fourth uplink frequency unit will reach (62720, 71680). As can be seen, this clearly exceeds the maximum effective range of 65535 for a 16-bit length RNTI, resulting in a serious consequence of the terminal being unable to work. The method provided in this application can effectively solve this problem. For example, the length of RNTI is greater than 16 bits, which allows the value space of RNTI to be greater than the effective range of 65535, thus supporting the above value range (62720, 71680). Since the RNTI is dedicated to the first downlink frequency unit, the four uplink frequency units are split, and the calculated RNTI value will not exceed the maximum value range. The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, which allows some frequency units among the four uplink frequency units to use the same index, so that the calculated RNTI value will not exceed the maximum value range. The RNTI is equal to the result of taking the modulo of the value calculated based on the index of the first uplink frequency unit. Since the modulo is taken based on the value calculated based on the index of the first uplink frequency unit, the value range is narrowed, which also ensures that the calculated RNTI value will not exceed the maximum value range.

[0103] It should be noted that the above values ​​are merely illustrative examples and are not intended to be specific.

[0104] As an optional implementation, the configuration method for calculating the index of the uplink frequency unit of the RNTI includes at least one of the following:

[0105] Explicit configuration of network-side devices, implicit configuration of network-side devices, and default configuration.

[0106] The explicit configuration of the network-side device mentioned above can be a configuration message sent by the terminal to the network-side device. This configuration message includes the index values ​​of one or more uplink frequency units. For example, the corresponding index value is explicitly indicated for each uplink frequency unit in the System Information Block (SIB). This value is used for the calculation of the random access RNTI in the subsequent process.

[0107] The implicit configuration of the network-side equipment mentioned above can be achieved by implicitly configuring the index of the uplink frequency unit through resource order or other means. For example, it can configure random access resources in multiple uplink frequency units and convert them into index values ​​according to the order of random access resources in multiple uplink frequency units. These values ​​are used for subsequent calculation of random access RNTI.

[0108] Among these features, the network-side devices can be explicitly or implicitly configured to support the dynamic configuration of frequency unit indexes, making the terminal's RNTI calculation more flexible and improving the terminal's access performance.

[0109] The default configuration mentioned above can determine the index of the uplink frequency unit according to the default rules, which can save signaling overhead.

[0110] In some implementations, the index used to calculate the uplink frequency unit of the RNTI can also be protocol-defined.

[0111] As an optional implementation, the RNTI is dedicated to the RNTI of the first downlink frequency unit:

[0112] The index of the first uplink frequency unit used to calculate the RNTI is defined according to the uplink frequency unit associated with the first downlink frequency unit. The first cell containing the first uplink frequency unit includes both the first downlink frequency unit and the second downlink frequency unit, and the uplink frequency units associated with the first downlink frequency unit and the second downlink frequency unit are different; or...

[0113] The index of the first uplink frequency unit used in calculating the RNTI is the index of the first uplink frequency unit relative to the first downlink frequency unit, wherein the first uplink frequency unit is associated with multiple downlink frequency units; or,

[0114] The Physical Random Access Channel (PRACH) resources in the first uplink frequency unit used by the RNTI are calculated as the PRACH resources associated with the first downlink frequency unit.

[0115] The index of the first uplink frequency unit used in the above calculation of RNTI is defined according to the uplink frequency units associated with the first downlink frequency unit. It can be defined by using the uplink frequency units associated with the first downlink frequency unit as a set to define the index of each uplink frequency unit, for example: Figure 5 As shown, the indices of the three uplink carriers associated with downlink carrier 1 are 0, 1, and 2, respectively, while the indices of the four uplink carriers associated with downlink carrier 2 are 0, 1, 2, and 3, respectively.

[0116] Since the index of the first uplink frequency unit used to calculate the RNTI is defined according to the uplink frequency unit associated with the first downlink frequency unit, the calculated RNTI value can be avoided to be too large, so that the terminal can access the cell containing more uplink frequency units.

[0117] The index of the first uplink frequency unit used in the above calculation of RNTI is the index of the first uplink frequency unit relative to the first downlink frequency unit. The first uplink frequency unit may be associated with multiple downlink frequency units, and the first uplink frequency unit may have different indices for different downlink frequency units.

[0118] Since the index of the first uplink frequency unit used to calculate the RNTI is the index of the first uplink frequency unit relative to the first downlink frequency unit, this supports associating one uplink frequency unit with multiple downlink frequency units, enabling network-side devices to send random access responses more flexibly and further improving the access performance of the terminal.

[0119] For example, a UL carrier can be associated with multiple DL carriers. This allows the network-side device to select a more suitable DL carrier to send a random access response, or the network-side device can send random access responses on multiple or all DL carriers to improve the success rate. Each DL carrier is assigned a UL carrier index to the UL carrier (different DL carriers can be assigned different indices). If the terminal is capable of simultaneously listening to multiple DL carriers, or if the RAR windows of each DL carrier are staggered, the terminal listens to the random access responses sent by each DL carrier. When the terminal is listening on a DL carrier, the RA-RNTI is calculated based on the UL carrier index assigned to that DL carrier. If the network-side device indicates that it will send random access responses on all associated DL carriers (the indication information is included in the configuration information above), the terminal can also choose to listen on only one DL carrier, such as listening for random access responses on the DL carrier with the strongest signal.

[0120] The Physical Random Access Channel (PRACH) resources in the first uplink frequency unit used in the above calculation of the RNTI are the PRACH resources associated with the first downlink frequency unit, and the calculated RNTI may correspond to the first downlink frequency unit. For example: Figure 6 As shown, PRACH resource set 1 and PRACH resource set 2 of uplink carrier 1 are associated with downlink carrier 1 and downlink carrier 2, respectively. Thus, PRACH resource set 1 and PRACH resource set 2 correspond to different RNTI spaces, and all PRACH resources of uplink carrier 2 are associated with downlink carrier 2.

[0121] Since the resources in the first uplink frequency unit used to calculate the RNTI are the PRACH resources associated with the first downlink frequency unit, the RNTI space of different downlink resource units can be independent, enabling the terminal to access cells containing more uplink frequency units and thus improving the terminal's access performance.

[0122] In some implementations, when the PRACH resources in the first uplink frequency unit used by the RNTI are calculated to be PRACH resources associated with the first downlink frequency unit, the first uplink frequency unit includes PRACH resources associated with different downlink frequency units.

[0123] Since the first uplink frequency unit includes PRACH resources associated with different downlink frequency units, it is possible to associate the PRACH resources of the first uplink frequency unit with different downlink frequency units, thereby reducing the range of RNTI values ​​corresponding to the index of the first uplink frequency unit.

[0124] In some implementations, the first uplink frequency unit may also correspond to a downlink frequency resource unit, such as... Figure 6 As shown in uplink carrier 2, in this case, all PRACH resources of the first uplink frequency unit are associated with the aforementioned first frequency unit.

[0125] As an optional implementation, if the index of the first uplink frequency unit used in the above calculation of the RNTI is the same as the index of the second uplink frequency unit, the first uplink frequency unit and the second uplink frequency unit are spaced apart by K uplink frequency units, and the index of the first uplink frequency unit is repeated every K uplink frequency units in the first cell where the first uplink frequency unit is located, where K is a positive integer.

[0126] The aforementioned interval of K uplink frequency units between the first uplink frequency unit and the second uplink frequency unit refers to an interval of K uplink frequency units between them, such as an interval of 1 or 2 units. For example, the indices of the first three uplink frequency units are configured as 0, 1, and 2. For the fourth uplink frequency unit, the index is sorted again starting from 0. For the seventh uplink frequency unit, the index is sorted again starting from 0, and so on.

[0127] Since the index of each K uplink frequency unit in the first cell is repeated, the value of RNTI can be controlled even when the first cell contains more uplink frequency units, so as to support the cell to contain more uplink frequency units and thus improve the communication performance between the terminal and the network side equipment.

[0128] As an optional implementation, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, at least one parameter index of the PRACH in the first uplink frequency unit and the second uplink frequency unit is different, and the parameter index is the parameter index used to calculate the RNTI.

[0129] The parameter index mentioned above can be at least one of the symbol index, time slot index, or frequency domain index.

[0130] In some implementations, the index of at least one parameter may be configured by the network-side device, agreed upon by the protocol, or determined based on default rules.

[0131] Since at least one parameter index of PRACH in the first uplink frequency unit and the second uplink frequency unit is different, the RNTI calculated based on the index of the first uplink frequency unit and the second uplink frequency unit is different, so as to reduce interference between terminals.

[0132] As an optional implementation, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit:

[0133] The RNTI calculated based on the indices of the first uplink frequency unit and the second uplink frequency unit are different.

[0134] The differences mentioned above can be achieved through offsetting, for example:

[0135] The calculation formula used for calculating RNTI in the first uplink frequency unit has an offset compared to the calculation formula used for calculating RNTI in the second uplink frequency unit; or,

[0136] The calculation formula used for calculating RNTI in the second uplink frequency unit has an offset compared to the calculation formula used for calculating RNTI in the first uplink frequency unit; or,

[0137] The RNTI calculated for the first uplink frequency unit has an offset compared to the RNTI calculated for the second uplink frequency unit, or...

[0138] The RNTI calculated for the second uplink frequency unit is offset compared to the RNTI calculated for the first uplink frequency unit.

[0139] The aforementioned offset can be an offset configured for the terminal to receive network-side equipment or an offset specified by the protocol. That is:

[0140] The offset corresponding to the RNTI calculated based on the index of the first uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol; and / or,

[0141] The offset corresponding to the RNTI calculated based on the index of the second uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol.

[0142] The calculation formula used for calculating RNTI of the first uplink frequency unit has an offset compared to the calculation formula used for calculating RNTI of the second uplink frequency unit. For example, the calculation formula used for calculating RNTI of the first uplink frequency unit has an additional offset compared to the calculation formula used for calculating RNTI of the second uplink frequency unit.

[0143] RA-NTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id

[0144] The calculation formula used for calculating RNTI for the second uplink frequency unit is as follows:

[0145] RA-RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+x

[0146] Where x is the offset mentioned above.

[0147] The calculation formula used for calculating RNTI of the second uplink frequency unit has an offset compared to the calculation formula used for calculating RNTI of the first uplink frequency unit. For example, the calculation formula used for calculating RNTI of the second uplink frequency unit has an additional offset compared to the calculation formula used for calculating RNTI of the first uplink frequency unit.

[0148] RA-RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id

[0149] The calculation formula used for calculating RNTI for the first uplink frequency unit is as follows:

[0150] RA-RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+x

[0151] Where x is the offset mentioned above.

[0152] By adding an offset to the formula, the RNTI calculated based on the indices of the first uplink frequency unit and the second uplink frequency unit can be different, thereby reducing interference between terminals.

[0153] The offset between the RNTI calculated for the first uplink frequency unit and the RNTI calculated for the second uplink frequency unit can be due to the fact that the formula used to calculate the RNTI for both the first and second uplink frequency units is the same, but the offset is determined based on the parameters of the two uplink frequency units. For example, the formula may contain n*delta, which represents the offset. If the value of n for the second uplink frequency unit is 0, there is no offset. If the value of n for the first uplink frequency unit is 1, it means an offset of one delta. If the value of n for the second uplink frequency unit is 1, it means an offset of one delta. If the value of n for the first uplink frequency unit is 2, it means an offset of two deltas.

[0154] The offset between the RNTI calculated for the second uplink frequency unit and the RNTI calculated for the first uplink frequency unit may be due to the fact that the formula used to calculate the RNTI for both the second and first uplink frequency units is the same, and the offset is determined based on the parameters of the two uplink frequency units.

[0155] Since the RNTI calculated based on the indices of the first uplink frequency unit and the second uplink frequency unit are different, this can reduce interference between terminals.

[0156] It should be noted that in some implementations, when the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, it is not restricted that the RNTIs calculated by the two uplink frequency units are different. This is because, in practical applications, even without adding corresponding restrictions, the probability of the RNTIs calculated based on these two uplink frequency units being the same is very low, that is, the probability of interference between terminals is very low and can be disregarded.

[0157] As an optional implementation, when the result obtained by modulo the RNTI is determined based on the numerical value, the RNTIs corresponding to any two PRACH resources configured by the network-side equipment in the first cell of the first uplink frequency unit are different.

[0158] The two PRACH resources mentioned above can be any two PRACH resources in different uplink frequency units, or any two PRACH resources in the same uplink frequency unit.

[0159] For example, network-side devices can pre-filter out PRACH resources with the same RNTI, and when configuring PRACH resources, isolate one of the PRACH resources to ensure that any two PRACH resources configured by the network-side device correspond to different RNTIs, which can reduce interference between terminals.

[0160] In this embodiment, the terminal sends a random access request in the first uplink frequency unit; the terminal receives a random access response in the first downlink frequency unit based on the Radio Network Temporary Identifier (RNTI), wherein the RNTI satisfies at least one of the following: the length of the RNTI is greater than 16 bits; the RNTI is dedicated to the first downlink frequency unit; the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell in which the first uplink frequency unit is located also includes the second uplink frequency unit; the RNTI is determined by taking the modulo of the value, wherein the value is calculated based on the index of the first uplink frequency unit. Since the length of the aforementioned RNTI is greater than 16 bits, it provides sufficient space to support more frequency units within the cell, enabling the terminal to access the cell more effectively and improving its access performance. Furthermore, the RNTI is dedicated to the first downlink frequency unit, ensuring that the RNTI for each downlink frequency unit is independent, supporting the terminal's access to cells containing more frequency units and further enhancing its access performance. The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, supporting the terminal's access to cells containing more uplink frequency units and improving its access performance. Finally, the RNTI is equal to the modulo operation of the value calculated based on the index of the first uplink frequency unit, allowing the RNTI to correspond to more values ​​calculated based on uplink frequency units, supporting the terminal's access to cells containing more uplink frequency units and further improving its access performance.

[0161] Please see Figure 7 , Figure 7 This is a flowchart of another cell access method provided in the embodiments of this application, such as... Figure 7 As shown, it includes the following steps:

[0162] Step 701: The network-side device sends a random access request in the first uplink frequency unit;

[0163] Step 702: The network-side device sends a random access response in the first downlink frequency unit based on the RNTI, wherein the RNTI satisfies at least one of the following:

[0164] The length of the RNTI is greater than 16 bits;

[0165] The RNTI is a dedicated RNTI for the first downlink frequency unit;

[0166] The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit;

[0167] The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

[0168] Optionally, the configuration method for calculating the index of the uplink frequency unit of the RNTI includes at least one of the following:

[0169] The network-side device has explicit configuration, implicit configuration, and default configuration.

[0170] Optionally, if the RNTI is an RNTI dedicated to the first downlink frequency unit:

[0171] The index of the first uplink frequency unit used to calculate the RNTI is defined according to the uplink frequency unit associated with the first downlink frequency unit. The first cell containing the first uplink frequency unit includes both the first downlink frequency unit and the second downlink frequency unit, and the uplink frequency units associated with the first downlink frequency unit and the second downlink frequency unit are different; or...

[0172] The index of the first uplink frequency unit used in calculating the RNTI is the index of the first uplink frequency unit relative to the first downlink frequency unit, wherein the first uplink frequency unit is associated with multiple downlink frequency units; or,

[0173] The index of the first uplink frequency unit used to calculate the RNTI is uniformly defined according to the uplink frequency units associated with multiple downlink frequency units, and the physical random access channel (PRACH) resource in the first uplink frequency unit used to calculate the RNTI is the PRACH resource associated with the first downlink frequency unit.

[0174] Optionally, if the PRACH resources in the first uplink frequency unit used by the RNTI are PRACH resources associated with the first downlink frequency unit, the first uplink frequency unit includes PRACH resources associated with different downlink frequency units.

[0175] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, the first uplink frequency unit and the second uplink frequency unit are spaced apart by K uplink frequency units, and the index of the first uplink frequency unit is repeated every K uplink frequency units in the first cell where the first uplink frequency unit is located, where K is a positive integer.

[0176] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, at least one parameter index of the PRACH resource in the first uplink frequency unit and the second uplink frequency unit is different, and the parameter index is the parameter index used to calculate the RNTI.

[0177] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit:

[0178] The RNTI calculated based on the indices of the first uplink frequency unit and the second uplink frequency unit are different.

[0179] Optionally, the offset corresponding to the RNTI calculated based on the index of the first uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol; and / or,

[0180] The offset corresponding to the RNTI calculated based on the index of the second uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol.

[0181] Optionally, when the result obtained by modulo the RNTI based on the value is determined, the RNTIs corresponding to any two PRACH resources configured by the network-side device in the first cell of the first uplink frequency unit are different.

[0182] Optionally, the first uplink frequency unit includes at least one uplink carrier, and the first downlink frequency unit includes at least one downlink carrier; or,

[0183] The first uplink frequency unit includes an uplink spectrum bandwidth, and the first downlink frequency unit includes a downlink spectrum bandwidth; or...

[0184] The first uplink frequency unit includes at least one uplink bandwidth portion (BWP), and the first downlink frequency unit includes at least one downlink BWP.

[0185] It should be noted that this embodiment is used as a reference for... Figure 4 The implementation methods of the network-side devices shown in the embodiments can be found in the following examples. Figure 4To avoid repetition, the relevant descriptions of the embodiments shown will not be repeated in this embodiment.

[0186] The following uses 6G as an example to illustrate the method provided in the embodiments of this application:

[0187] This application provides an embodiment that mainly describes the method of extending the length and range of RNTI.

[0188] In some communication systems (such as 5G systems), the Cell Radio Network Temporary Identifier (C-RNTI) is 16 bits long, with a value range of [0, 65535]. In 6G systems, with changes and expansions in cell models, a large spectrum area may be defined as a single cell, facilitating flexible operation of different resources within the cell. For example, in some communication systems (such as 5G systems), 20MHz or 100MHz may be defined as a cell, while in 6G systems, numerous discontinuous spectrum areas, even several GHz of spectrum, may be defined as a single cell. Therefore, in future 6G, the resource range of a cell will be larger, resulting in a greater number of served terminals. Furthermore, due to the rapid development of IoT services, the types and quantities of various terminals are growing exponentially, leading to a rapid increase in the number of terminals that need to be identified within a cell. Therefore, extending the length and range of the RNTI is more appropriate.

[0189] Furthermore, due to the increased number of uplink frequency units that need to be distinguished during random access, more RNTI space is required for calculations according to the RA-RNTI and MsgB-RNTI calculation formulas defined in the protocol. Therefore, extending the RNTI length and range will also facilitate the calculation of RA-RNTI and MsgB-RNTI, allowing them to be calculated directly in a manner similar to the protocol definition, without causing duplication or confusion that would render them inoperable.

[0190] If the RNTI length and range are extended, the maximum value range of the RNTI is directly expanded. Therefore, when determining the maximum value range, it is necessary to consider the maximum number of uplink carriers / uplink spectrum resources configured in the system, or the maximum number of uplink carriers / uplink spectrum resources used for random access. This ensures that the calculation formulas for RA-RNTI and MsgB-RNTI will not exceed the RNTI space. Once these two aspects are determined, it can be ensured that the values ​​of RA-RNTI or MsgB-RNTI calculated according to the formulas defined in the protocol or subsequently defined will fall within the maximum value range of the RNTI.

[0191] Specifically, with the increasing complexity and diversity of the number of uplink frequency units participating in or used for random access, the method of fixing the carrier index to 0 for NUL and the carrier index to 1 for SUL in 5G is no longer applicable. A new method for determining the carrier index needs to be considered, with at least one of the following options:

[0192] The explicit configuration method of network-side equipment, such as when configuring random access carriers, can generally appear in the cell-level SIB message, explicitly indicating the corresponding uplink frequency unit index value for each uplink frequency unit. This value is directly used for the subsequent calculation of random access RNTI.

[0193] Network-side devices obtain uplink frequency unit indices implicitly or by default. For example, when configuring random access uplink frequency units or random access resources, network-side devices typically include these in cell-level SIB messages. Since each uplink frequency unit or its corresponding random access resource has a configuration order, this order is directly converted into carrier index values ​​according to default rules for subsequent random access RNTI calculations. For instance, in the RACH configuration table, the first uplink frequency unit to appear has an index value of 0, the second has an index value of 1, and so on. Alternatively, there might be a default or separately configured anchor uplink frequency unit with an index value of 0, while other non-anchor uplink frequency units have index values ​​of 1, 2, 3, etc., according to their configuration order. These default rules can be explicitly written in the protocol to ensure consistent execution by network-side devices and terminals, leading to a smooth and consistent workflow during random access.

[0194] This application provides an embodiment, which mainly describes the method of 2DL independent RNTI space.

[0195] In some communication systems (such as 5G), a cell contains at most one downlink carrier and two uplink carriers (NUL and SUL). For random access, Msg1 and MsgA initiated by the terminal on the uplink PRACH resources configured on NUL and SUL will be received on the same DL carrier as Msg2 or MsgB. Therefore, in the random access RNTI calculation formula, it is necessary to distinguish the carrier index to ensure that the network-side equipment and the terminal have a consistent understanding of the random access resources.

[0196] In the cell model of a 6G system, one approach is to define a cell as containing N uplink frequency units and M frequency units, where N and M are positive integers. The attributes and associations of these carriers can be flexibly configured. For example, one downlink carrier or a pair of uplink / downlink carriers can be defined as an anchor carrier, while the others are non-anchor carriers. Anchor carriers transmit at least one of the following: a Synchronization Signal Block (SSB), a synchronization signal, a cell-level reference signal, and a major system message (e.g., a Master Information Block (MIB)). Non-anchor carriers do not necessarily need these attributes. Additionally, some DL carriers can be configured as paging carriers for terminal listening to paging requests, and some UL carriers can be configured as RACH carriers for terminals to initiate random access. Since initiating random access requires not only UL carrier and PRACH resources but also the corresponding DL carrier association configuration, after the terminal selects a UL carrier to send Msg1 or MsgA via PRACH resources, it can then listen for subsequent random access responses on a specific DL carrier. Therefore, configuring the PRACH resources and the association between the UL carrier and DL carrier where the PRACH resources reside is crucial for the smooth execution of the random access procedure.

[0197] For example, when a cell has 3 DL carriers / downlink spectrum bandwidth resources and 8 UL carriers / uplink spectrum bandwidth resources, it can select 2 DL carriers and 7 UL carriers to participate in the random access procedure. Furthermore, DL carrier 1 can be configured to correspond to UL carriers 1, 2, and 3, while DL carrier 2 can correspond to UL carriers 4, 5, 6, and 7. That is, when the UE selects PRACH resources on uplink carrier 1, 2, or 3 to send Msg1 or MsgA, the UE needs to listen for the access response on downlink carrier 1. Similarly, when the UE selects PRACH resources on uplink carrier 4, 5, 6, or 7 to send Msg1 or MsgA, the UE needs to listen for the access response on downlink carrier 2.

[0198] In this configuration, one DL carrier and y UL carriers form an associated configuration group for RACH resource pairing. A group can contain more than one such RACH associated configuration group. It can be seen that the RACH process of different RACH associated configuration groups can be considered relatively independent. That is, on downlink carrier 1, it only needs to distinguish the Msg1 and MsgA resource locations transmitted on its associated uplink carrier, and will not interleave or confuse with downlink carrier 2. Therefore, one rule for using random access RNTI is that RA-RNTI and MsgB-RNTI are used uniquely within the range of a random access downlink carrier. Different random access downlink carriers have their own independent spatial ranges for RA-RNTI and MsgB-RNTI, allowing for reuse. Because the monitored downlink carriers are different, both the terminal and the network can accurately distinguish them. For example, a terminal initiates Msg1 on uplink carrier 1 and calculates the RA-RNTI value according to the RA-RNTI calculation formula. It then uses this value to listen for the random access response Msg2 message on downlink carrier 1, which corresponds to uplink carrier 1. At the same time, another UE initiates Msg1 on uplink 4 and calculates the RA-RNTI value according to the RA-RNTI calculation formula. It then uses this value to listen for the random access response Msg2 message on downlink carrier 2, which corresponds to uplink carrier 4. Even if the RA-RNTI calculated by the two terminals is the same, because the corresponding downlink carriers are different, both the terminal and the network-side equipment can accurately distinguish between them and independently and correctly use and complete the random access process.

[0199] like Figure 5 As shown, UE1 initiates Msg1 or MsgA on UL carrier1, and listens for the response on DL carrier1 using the RA-RNTI or MsgB-RNTI calculated based on the PRACH resource location. Correspondingly, the network also sends a random access response on DL carrier1 when it receives the same RA-RNTI or MsgB-RNTI from Msg1 or MsgA on UL carrier1, calculated based on the PRACH resource location. This process is completely independent of the process of associating groups with DL carrier2. Even if the RNTI is repeated, there is no confusion because the association is clear and understood by both the network and the UE.

[0200] Another approach, which may involve more complex configurations of random access resources and carrier groups, is to use an uplink carrier / uplink random access carrier that corresponds to multiple downlink random access carriers. This type of association configuration can be applied to situations where the uplink carrier bandwidth or resources are large while the downlink carrier bandwidth or resources are small. However, even with such a configuration, it is generally necessary to explicitly configure which PRACH resources of an uplink carrier / uplink random access carrier are associated with downlink carrier 1, and which or the remaining PRACH resources of the same uplink carrier / uplink random access carrier are associated with downlink carrier 2. In this case, the RA-RNTI and MsgB-RNTI calculated by Msg1 and MsgA initiated by different PRACH resources of the same uplink carrier are naturally different and can be distinguished on the two downlink carriers. Moreover, both the terminal and the network-side equipment clearly know the association relationship and the distinction, so there will be no errors.

[0201] like Figure 6 As shown, UE1 initiates Msg1 or MsgA on UL carrier1 using PRACH resource set 1. The RA-RNTI or MsgB-RNTI calculated based on the PRACH resource location is then listened for on DL carrier1. Correspondingly, the network receives the same RA-RNTI or MsgB-RNTI from Msg1 or MsgA on UL carrier1 using PRACH resource set 1, and this same RA-RNTI is also sent on DL carrier1 as a random access response. This process is completely independent of the process associated with DL carrier2. Even if the RNTI is repeated, there is no confusion because the association is clear and understood by both the network-side equipment and the terminal.

[0202] The core of this embodiment is: A cell contains multiple downlink frequency units (RNTIs), each participating in the random access procedure has an independent RNTI space. These spaces are independent and can overlap. Through strict pairing relationships between downlink and uplink frequency units or their PRACH resource groups, different spaces can be distinguished for independent random access procedures. Furthermore, because multiple downlink frequency units have different RNTI spaces, and overlap between spaces is allowed, it's equivalent to grouping uplink frequency units or resources. This reduces the number of uplink frequency units that need to be distinguished within the same space, thus satisfying the requirement of not exceeding the maximum RNTI value and enabling normal random access operation.

[0203] In some implementations, since an independent space for Random Access RNTIs exists within a cell, although the identification problem during the random access process can be solved, after the terminal ends the random access process and enters the connected state, it may be configured with multiple combinations of downlink and uplink carriers. In order to ensure that the terminal has no conflict requirements when using C-RNTI scheduling in the connected state, the allocation of C-RNTIs still needs to consider the uniqueness within the cell. For example, if a random access process initiated by different resource configuration groups allocates C-RNTIs in Msg2 and MsgB for subsequent scheduling in the connected state, the allocation of this C-RNTI needs to ensure that it is unique within the entire cell and cannot be duplicated with RA-RNTIs and MsgB-RNTIs in each resource configuration group.

[0204] In another implementation, information about multiple uplink carriers associated with a DL carrier, including the UL carrier index assigned to each associated UL carrier (the DL carrier assigns its own UL carrier index, i.e., the space is independent), is sent to the terminal, for example, via system information (placed in PRACH or RACH configuration information).

[0205] Alternatively, for a UL carrier, one approach is to associate it with only one DL carrier. In this case, the terminal sends a preamble on the UL carrier and listens for RAR only on that DL carrier. Another approach is to associate a UL carrier with multiple DL carriers (the advantage is that the network-side device can choose a more suitable DL to send RAR, or the network-side device can send RAR on multiple or all DL carriers to improve the success rate). Each DL carrier assigns a UL carrier index to the UL carrier (different DL carriers can be assigned different indices). The terminal listens for the RAR sent by each DL carrier (if the network-side device is capable of listening to multiple DLs simultaneously, or if the RAR windows of each DL carrier can be staggered). When the terminal is listening on a DL carrier, the RA-RNTI is calculated based on the UL carrier index assigned to that DL carrier. If the network-side device indicates that it will send RAR on all associated DL carriers (the indication information is in the configuration information mentioned above), the terminal can also choose to listen only on one DL carrier (e.g., the DL carrier with the strongest signal).

[0206] This allows for the assignment of an index to the UL carrier (or UL PRACH granularity) when it is associated with multiple DL carriers. Within each DL carrier's dimension, the UL carrier can be assigned an index independently or uniformly, and then the RA-RNTI can be calculated according to the formula. For the terminal, Msg1 or MsgA is sent on the PRACH of a UL carrier, and RAR is listened to in one of the DLs. However, for the network-side device, RAR can be sent on all associated DLs.

[0207] This application provides an embodiment, which mainly describes the configuration and folding method of network-side devices.

[0208] When the length and value range of the RNTI remain unchanged, maintaining 16 bits and a range of 0-65535, the physical layer still uses the 16-bit RA-RNTI or MsgB-RNTI for scrambling operations on the Physical Downlink Control Channel (PDCCH) for Msg2 or MsgB. This best conforms to the existing physical layer operations, ensuring simplicity and continuity in physical layer processing, and minimizing changes to physical layer hardware and software. If the rule of RNTI uniqueness within a cell is also maintained, using a unique scheduling listening identifier for a terminal within the same cell is the simplest and most protocol-compliant method, with the simplest algorithm and implementation.

[0209] Therefore, in order to adhere to the above principles of simplicity and inheritance, a new design must be considered to ensure that when there are multiple uplink frequency units (such as multiple uplink carriers, uplink random access carriers, or uplink random access frequency band resources) in a cell, the calculation of RA-RNTI and MsgB-RNTI does not exceed the range of RNTI values ​​with a length of 16 bits.

[0210] The core of this embodiment is that when the random access response RNTI of multiple uplink frequency units may exceed the range of RNTI, the network-side device configures appropriate PRACH time-frequency resource locations and carrier indexes to ensure that both RA-RNTI and MsgB-RNTI are within the range of 16-bit RNTI values ​​and to avoid duplicate calculations.

[0211] For example, when a UL carrier is configured with both 4-step RACH and 2-step RACH, the required RNTI space is: 8960 units of computation space for RA-RNTI and another 8960 units for MsgB-RNTI, for a total of 17920 RNTI computation spaces. To ensure that the maximum RNTI value is not exceeded, there can be a maximum of 3 ul_carrier_ids, with values ​​of 0, 1, and 2 respectively. When there are 4 or more UL carriers, ul_carrier_id cannot be expanded because expanding it to 3 would exceed the maximum 16-bit RNTI value of 65535.

[0212] Therefore, in this embodiment, one approach is to configure or specify the ul_carrier_id of the fourth uplink carrier as a value whose calculated result is within 65535, such as configuring it as 0. The configuration or specification method is as follows:

[0213] The configuration method is quite straightforward. When notifying the uplink random access carrier index in the cell, the first three uplink carrier indices are directly configured as 0, 1, and 2. For the fourth uplink carrier, the index is sorted again starting from 0. For the seventh uplink carrier, the index is sorted again starting from 0, and so on. This means that the ul_carrier_id values ​​of all uplink random access carriers are within the range of 0, 1, and 2, which ensures that the RA-RNTI and MsgB-RNTI calculated by the formula will not exceed the maximum range of RNTI values.

[0214] Alternatively, the default rule or method involves assigning default values ​​to the uplink carrier index ul_carrier_id in a cyclical pattern of 0, 1, 2, 0, 1, 2, 0, 1, 2… for each configured uplink random access carrier. This ensures that the ul_carrier_id values ​​for all uplink random access carriers are within the range of 0, 1, and 2, thus guaranteeing that the RA-RNTI and MsgB-RNTI calculated using the formula will not exceed the maximum range of RNTI values.

[0215] By explicitly configuring or defaulting the value of ul_carrier_id using the methods described above, the calculated RNTI can be ensured to remain within the maximum RNTI range, such as 65535. However, this approach, where uplink random access carrier 1 and uplink random access carrier 4 use the same ul_carrier_id, can lead to inaccurate differentiation between PRACH resources transmitted on uplink random access carrier 1 and uplink random access carrier 4. This results in the same RA-RNTI or MsgB-RNTI being calculated from different resource locations, thus confusing the processing behavior of the two terminals. A further solution is as follows:

[0216] For uplink random access carriers sharing the same ul_carrier_id, such as uplink random access carrier 1 and uplink random access carrier 4, in order to distinguish their PRACH resources, the network-side equipment needs to configure distinct PRACH resources for the two carriers during configuration. That is, the variables representing PRACH resources cannot have completely identical values ​​on carrier 1 and carrier 4. Parameters such as s_id, t_id, and f_id must have at least one different value on each of the two carriers. As a result, based on the different parameter values ​​on each carrier, different RA-RNTI or MsbB-RNTI can be calculated. Therefore, when the UE sends Msg1 or MsgB through resources on different carriers, it will definitely correspond to different RA-RNTI or MsbB-RNTI, thus distinguishing between Msg2 and MsgB during listening, allowing random access to proceed smoothly.

[0217] For network-side devices, the unique correspondence between RA-RNTI and MsgB-RNTI can be resolved by configuring differentiated PRACH configurations on paired uplink carriers.

[0218] From a practical implementation perspective, since the configuration options for PRACH are very diverse, there are actually only a very small number of RNTI calculation values ​​within the 8960 computation space of RA-RNTI for a single carrier. Therefore, it is feasible to add new carrier PRACH resources and map them to the same 8960 space for sharing.

[0219] By using the above methods, we can ensure that different PRACH resource locations yield unique RNTI results, and that the RNTI values ​​are all within the range.

[0220] This application provides an embodiment, which mainly describes the network-side device configuration and model extraction method.

[0221] When the length and value range of RNTI remain unchanged, maintaining 16 bits and a range of 0-65535, the physical layer still uses 16-bit RA-RNTI or MsgB-RNTI for PDCCH scrambling operations on Msg2 or MsgB. This best conforms to the existing operation of the physical layer. To adhere to this principle of simplicity and inheritance, a new design must be considered to ensure that when there are multiple uplink frequency elements in a cell (such as multiple uplink carriers, uplink random access carriers, or uplink random access frequency band resources), the calculation of RA-RNTI and MsgB-RNTI does not exceed the value range of the 16-bit RNTI.

[0222] The core of this embodiment is: when the random access response RNTI of multiple uplink frequency units may exceed the range of RNTI, an automatic modulus operation is performed, and the network-side device configures the appropriate PRACH time-frequency resource location to ensure the uniqueness of the calculated values ​​of RA-RNTI and MsgB-RNTI under different resources.

[0223] When a UL carrier is configured with both 4-step RACH and 2-step RACH, the required RNTI space is as follows: RA-RNTI requires 8960 computational units, and MsgB-RNTI requires another 8960 computational units, for a total of 17920 RNTI computational units. To ensure that the maximum RNTI value is not exceeded, there can be a maximum of 3 ul_carrier_ids, with values ​​of 0, 1, and 2 respectively. When there are 4 or more UL carriers, and the ul_carrier_id value is equal to or greater than 3, it may exceed the maximum 16-bit RNTI value of 65535.

[0224] Therefore, one approach adopted in this embodiment is to ensure that the RNTI calculated by substituting the PRACH resources of the 4th and subsequent uplink carriers into the formula is a value within 65535. The configuration and / or specified operation method is as follows:

[0225] Regarding the value of ul_carrier_id, the configuration or predefined method is still adopted. For example, for uplink random access carrier 1, carrier 2, carrier 3, carrier 4, etc., the ul_carrier_id value is still configured or specified to be an incrementing 0, 1, 2, 3, etc.

[0226] When using an incremental ul_carrier_id value, there might be instances where uplink random access carrier 4 and subsequent carriers 5, 6, and 7 result in RA-RNTI or MsgB-RNTI calculated using the formula, exceeding the maximum RNTI value of 65535. The calculation formula can be modified by taking the modulo operation % 65535 on the result. For example:

[0227] The formula for calculating RA-RNTI has been updated as follows:

[0228] RA-RNTI=(1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id)%65535

[0229] The formula for calculating MsgB-RNTI has been updated as follows:

[0230] MSGB-RNTI=(1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×2)%65535

[0231] This updated calculation formula ensures that for any PRACH resource location, the calculated RNTI will always be within the range of RNTI values.

[0232] The second step is that due to the modulo operation, the 8960 space of the random access resources of two or more uplink carriers will no longer be independent, but will be shared. For example, after the modulo operation, the calculation results of the PRACH resources of carrier 4 and carrier 5 will fall into the 0-8960 range of carrier 1. Therefore, the problem of the uniqueness of the calculation results corresponding to the resources can also be solved.

[0233] The solution is to configure the network-side devices to ensure that the RNTI calculated by substituting any two different PRACH resources into the above formula must be two different values.

[0234] The network-side device algorithm is also relatively easy to implement. All configured PRACH resources are substituted into the formula. If the calculation results are duplicated, one of the resources is removed, and the unique result is used as the configuration restriction.

[0235] From a feasibility standpoint, since the RNTI result calculated from the PRACH resources of a single carrier within the 8960 space is extremely small, it is possible to coordinate and separate multiple carriers sharing the same 8960 space through configuration, thereby achieving the goal of uniqueness.

[0236] By using the above methods, it can be ensured that different PRACH resource locations yield unique RNTI results, and that the RNTI values ​​are all within the range.

[0237] This application provides an embodiment, which mainly describes the method of increasing offset.

[0238] When the length and value range of RNTI remain unchanged, maintaining 16 bits and a range of 0-65535, the physical layer still uses 16-bit RA-RNTI or MsgB-RNTI for PDCCH scrambling operations on Msg2 or MsgB. This best conforms to the existing operation of the physical layer. To adhere to this principle of simplicity and inheritance, a new design must be considered to ensure that when there are multiple uplink frequency elements in a cell (such as multiple uplink carriers, uplink random access carriers, or uplink random access frequency band resources), the calculation of RA-RNTI and MsgB-RNTI does not exceed the value range of the 16-bit RNTI.

[0239] The core of this embodiment is: when the random access response RNTI of multiple uplink frequency units may exceed the range of RNTI, the network side configures at least one of the appropriate PRACH time-frequency resource location, carrier index, and offset value to ensure that RA-RNTI and MsgB-RNTI are within the range of 16-bit RNTI values ​​and to avoid duplicate calculation values.

[0240] For example, when a UL carrier is configured with both 4-step RACH and 2-step RACH, the required RNTI space is: 8960 units of computation space for RA-RNTI and another 8960 units for MsgB-RNTI, for a total of 17920 RNTI computation spaces. To ensure that the maximum RNTI value is not exceeded, there can be a maximum of 3 ul_carrier_ids, with values ​​of 0, 1, and 2 respectively. When there are 4 or more UL carriers, ul_carrier_id cannot be expanded because expanding it to 3 would exceed the maximum 16-bit RNTI value of 65535.

[0241] Therefore, in this embodiment, one approach is to configure or specify the ul_carrier_id of the fourth uplink carrier as a value whose calculated result is within 65535, for example, to configure it as 0. The configuration or specification method is as follows:

[0242] The configuration method is quite straightforward. When notifying the uplink random access carrier index in the cell, the first three uplink carrier indices are directly configured as 0, 1, and 2. For the fourth uplink carrier, the index is sorted again starting from 0. For the seventh uplink carrier, the index is sorted again starting from 0, and so on. This means that the ul_carrier_id values ​​of all uplink random access carriers are within the range of 0, 1, and 2, which ensures that the RA-RNTI and MsgB-RNTI calculated by the formula will not exceed the maximum range of RNTI values.

[0243] Alternatively, the default rule or method involves assigning default values ​​to the uplink carrier index ul_carrier_id in a cyclical pattern of 0, 1, 2, 0, 1, 2, 0, 1, 2… for each configured uplink random access carrier. This ensures that the ul_carrier_id values ​​for all uplink random access carriers are within the range of 0, 1, and 2, thus guaranteeing that the RA-RNTI and MsgB-RNTI calculated using the formula will not exceed the maximum range of RNTI values.

[0244] By explicitly configuring or defaulting the value of ul_carrier_id using the methods described above, the calculated RNTI can be ensured to remain within the maximum RNTI range, such as 65535. However, this approach introduces a new problem: when uplink random access carrier 1 and uplink random access carrier 4 use the same ul_carrier_id, the PRACH resources transmitted on uplink random access carrier 1 and uplink random access carrier 4 cannot be accurately distinguished. This results in the same RA-RNTI or MsgB-RNTI being calculated from different resource locations, thus confusing the processing behavior of the two terminals. A further solution is as follows:

[0245] Use either the default or configured offset value to ensure the uniqueness of RNTI calculations;

[0246] In simple terms, for example, uplink random access carrier 1 and carrier 4 may share the same RNTI calculation result space of 8960. By configuring or defaulting, the calculation result of carrier 1 can be kept in the original formula or the offset value can be 0. However, the calculation result of carrier 4 can be added with an offset value of x by configuring or defaulting. That is, the new calculation formula of carrier 4 becomes the original calculation formula plus the offset value. This can ensure that carrier 1 and carrier 4 will still calculate different RNTIs even if they have the same PRACH resource at the same time and frequency resource location (i.e., all variable values ​​are the same). Therefore, carriers can be distinguished, and the principle of uniqueness of calculating different RNTIs at different resource locations can be achieved.

[0247] If it becomes more complex, since even on carrier 1 and carrier 4, some resources will still be inherently different, different offset values ​​do not need to be added for different resources. Only for resources with the same variable value do different offset values ​​need to be applied to distinguish the calculation results. Therefore, the offset value can be explicitly configured to be calculated for each PRACH resource or each group of PRACH resources.

[0248] Overall, the goal of achieving a one-to-one correspondence between resources and RNTI calculation values ​​is achieved by configuring offset values ​​on network-side devices and allocating appropriate PRACH resources.

[0249] In terms of rationality, it is similar to the previous embodiments. The 8960 has a relatively wide spatial range, which can realize the offset value and the sharing of multiple carriers.

[0250] By using the above methods, it can be ensured that different PRACH resource locations yield unique RNTI results, and that the RNTI values ​​are all within the range.

[0251] According to some technologies, the calculation formulas for RA-RNTI and MsgB-RNTI cannot ensure that they are within the range and unique when there are a large number of uplink random access carriers. Therefore, they are not suitable for 6G single-cell multi-carrier cell model operation.

[0252] In this embodiment of the application, in order to solve the problem of the value range, the length of RNTI can be extended to increase the value range, so that the 6G cell can accommodate more users, or the scope of RA-RNTI and MsgB-RNTI can be changed to be effective and unique within a single downlink random access carrier, thereby solving the problem of value range and uniqueness. The advantage is that the calculation formula remains unchanged, so that the random access process can proceed smoothly.

[0253] Alternatively, in this embodiment of the application, in order to reuse existing physical layer operations and hardware and software implementations as much as possible and keep the length and scope of RNTI unchanged, at least one of the PRACH time-frequency resource location, carrier index and offset value can be improved through network configuration or default rules, thereby overcoming the problem of the range and uniqueness of the RNTI calculation results. The advantage is that the length and scope of RNTI remain unchanged, and the formula can be simply modified so that the random access process can proceed smoothly.

[0254] In this application embodiment, in order to use a more flexible cell model for 6G, and to ensure the accuracy of RNTI calculation for the UE random access procedure when a cell contains multiple uplink carriers / uplink spectrum resource bandwidths, the system design needs to be enhanced, mainly including the following methods:

[0255] Method 1: Increase the length of RNTI, for example, from 16 bits to 18 bits, 24 bits or other lengths, to meet more distinguishing requirements;

[0256] Method 2: Change the RNTI rules so that each downlink carrier or downlink spectrum bandwidth resource participating in / used for random access corresponds to an independent RNTI space;

[0257] Method 3: Configure network-side devices or adopt the default method to specify an index for calculation for each uplink frequency unit. The network configuration ensures that PRACH resources are separated and do not duplicate.

[0258] Method 4: When the calculated RNTI exceeds the range, a modulo operation is used to obtain the final RNTI value. The network configuration ensures that PRACH resources are separated and do not duplicate.

[0259] Method 5: Configure network-side devices or adopt the default method to specify the index and offset information used for calculation for each uplink frequency unit to ensure uniqueness;

[0260] It should be noted that the above embodiments are based on the calculation formulas and value ranges of RA-RNTI and MsgB-RNTI in 5G. For example, one RACH type on an uplink carrier requires 8960 RNTI calculation space, and configuring both 4-step and 2-step RACH types simultaneously requires 17920 RNTI calculation space. The range of time and frequency resources designed for 6G or 7G systems may be further changed and expanded. Therefore, the embodiments of this application do not exclude new value ranges and calculation spaces, but the method can still be applied.

[0261] The cell access method provided in this application can be executed by a cell access device. This application uses the example of a cell access device executing the cell access method to illustrate the cell access device provided in this application.

[0262] This application provides a cell access device. As an example, the cell access device can be a communication device or a component within a communication device, such as a chip. The communication device can be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal can be, but is not limited to, the type of terminal 11 listed above, and the network-side device can be, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0263] The cell access device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as a Central Processing Unit (CPU), microprocessor, Digital Signal Processor (DSP), Artificial Intelligence (AI) processor, Graphics Processing Unit (GPU), Application Specific Integrated Circuit (ASIC), Network Processor (NP), Field Programmable Gate Array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceiver, pins, circuits, bus, radio frequency unit, etc.

[0264] For details, see Figure 8 When the cell access device is a terminal or a component within a terminal, the cell access device 800 includes:

[0265] Transmitting module 801 is used to transmit a random access request in the first uplink frequency unit;

[0266] Receiver module 802 is configured to receive a random access response in a first downlink frequency unit based on a Radio Network Temporary Identifier (RNTI), wherein the RNTI satisfies at least one of the following:

[0267] The length of the RNTI is greater than 16 bits;

[0268] The RNTI is a dedicated RNTI for the first downlink frequency unit;

[0269] The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit;

[0270] The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

[0271] Optionally, the configuration method for calculating the index of the uplink frequency unit of the RNTI includes at least one of the following:

[0272] Explicit configuration of network-side devices, implicit configuration of network-side devices, and default configuration.

[0273] Optionally, if the RNTI is an RNTI dedicated to the first downlink frequency unit:

[0274] The index of the first uplink frequency unit used to calculate the RNTI is defined according to the uplink frequency unit associated with the first downlink frequency unit. The first cell containing the first uplink frequency unit includes both the first downlink frequency unit and the second downlink frequency unit, and the uplink frequency units associated with the first downlink frequency unit and the second downlink frequency unit are different; or...

[0275] The index of the first uplink frequency unit used in calculating the RNTI is the index of the first uplink frequency unit relative to the first downlink frequency unit, wherein the first uplink frequency unit is associated with multiple downlink frequency units; or,

[0276] The Physical Random Access Channel (PRACH) resources in the first uplink frequency unit used by the RNTI are calculated as the PRACH resources associated with the first downlink frequency unit.

[0277] Optionally, if the PRACH resources in the first uplink frequency unit used by the RNTI are PRACH resources associated with the first downlink frequency unit, the first uplink frequency unit includes PRACH resources associated with different downlink frequency units.

[0278] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, the first uplink frequency unit and the second uplink frequency unit are spaced apart by K uplink frequency units, and the index of the first uplink frequency unit is repeated every K uplink frequency units in the first cell where the first uplink frequency unit is located, where K is a positive integer.

[0279] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, at least one parameter index of the PRACH in the first uplink frequency unit and the second uplink frequency unit is different, and the parameter index is the parameter index used to calculate the RNTI.

[0280] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit:

[0281] The RNTI calculated based on the indices of the first uplink frequency unit and the second uplink frequency unit are different.

[0282] Optionally, the offset corresponding to the RNTI calculated based on the index of the first uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol; and / or,

[0283] The offset corresponding to the RNTI calculated based on the index of the second uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol.

[0284] Optionally, when the result obtained by modulo the RNTI based on the value is determined, the RNTIs corresponding to any two PRACH resources configured by the network-side equipment in the first cell of the first uplink frequency unit are different.

[0285] Optionally, the first uplink frequency unit includes at least one uplink carrier, and the first downlink frequency unit includes at least one downlink carrier; or,

[0286] The first uplink frequency unit includes an uplink spectrum bandwidth, and the first downlink frequency unit includes a downlink spectrum bandwidth; or...

[0287] The first uplink frequency unit includes at least one uplink bandwidth portion (BWP), and the first downlink frequency unit includes at least one downlink BWP.

[0288] The aforementioned cell access device can improve the access performance of terminals.

[0289] See Figure 9 When the cell access device is a network-side device or a component of a network-side device, the cell access device 900 includes:

[0290] The receiving module 901 is used to send a random access request in the first uplink frequency unit;

[0291] The transmitting module 902 is configured to transmit a random access response in the first downlink frequency unit based on a Radio Network Temporary Identifier (RNTI), wherein the RNTI satisfies at least one of the following:

[0292] The length of the RNTI is greater than 16 bits;

[0293] The RNTI is a dedicated RNTI for the first downlink frequency unit;

[0294] The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit;

[0295] The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

[0296] Optionally, the configuration method for calculating the index of the uplink frequency unit of the RNTI includes at least one of the following:

[0297] The network-side device has explicit configuration, implicit configuration, and default configuration.

[0298] Optionally, if the RNTI is an RNTI dedicated to the first downlink frequency unit:

[0299] The index of the first uplink frequency unit used to calculate the RNTI is defined according to the uplink frequency unit associated with the first downlink frequency unit. The first cell containing the first uplink frequency unit includes both the first downlink frequency unit and the second downlink frequency unit, and the uplink frequency units associated with the first downlink frequency unit and the second downlink frequency unit are different; or...

[0300] The index of the first uplink frequency unit used in calculating the RNTI is the index of the first uplink frequency unit relative to the first downlink frequency unit, wherein the first uplink frequency unit is associated with multiple downlink frequency units; or,

[0301] The index of the first uplink frequency unit used to calculate the RNTI is uniformly defined according to the uplink frequency units associated with multiple downlink frequency units, and the physical random access channel (PRACH) resource in the first uplink frequency unit used to calculate the RNTI is the PRACH resource associated with the first downlink frequency unit.

[0302] Optionally, if the PRACH resources in the first uplink frequency unit used by the RNTI are PRACH resources associated with the first downlink frequency unit, the first uplink frequency unit includes PRACH resources associated with different downlink frequency units.

[0303] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, the first uplink frequency unit and the second uplink frequency unit are spaced apart by K uplink frequency units, and the index of the first uplink frequency unit is repeated every K uplink frequency units in the first cell where the first uplink frequency unit is located, where K is a positive integer.

[0304] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, at least one parameter index of the PRACH resource in the first uplink frequency unit and the second uplink frequency unit is different, and the parameter index is the parameter index used to calculate the RNTI.

[0305] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit:

[0306] The RNTI calculated based on the indices of the first uplink frequency unit and the second uplink frequency unit are different.

[0307] Optionally, the offset corresponding to the RNTI calculated based on the index of the first uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol; and / or,

[0308] The offset corresponding to the RNTI calculated based on the index of the second uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol.

[0309] Optionally, when the result obtained by modulo the RNTI based on the value is determined, the RNTIs corresponding to any two PRACH resources configured by the network-side device in the first cell of the first uplink frequency unit are different.

[0310] Optionally, the first uplink frequency unit includes at least one uplink carrier, and the first downlink frequency unit includes at least one downlink carrier; or,

[0311] The first uplink frequency unit includes an uplink spectrum bandwidth, and the first downlink frequency unit includes a downlink spectrum bandwidth; or...

[0312] The first uplink frequency unit includes at least one uplink bandwidth portion (BWP), and the first downlink frequency unit includes at least one downlink BWP.

[0313] The aforementioned cell access device can improve the access performance of terminals.

[0314] The cell access device provided in this application embodiment can achieve... Figure 4 and Figure 7 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0315] like Figure 10As shown in the illustration, this application also provides a communication device 1000, including a processor 1001 and a memory 1002. The memory 1002 stores programs or instructions that can run on the processor 1001. For example, when the communication device 1000 is a terminal, the program or instructions executed by the processor 1001 implement the various steps of the above-described cell access method embodiment and achieve the same technical effect. When the communication device 1000 is a network-side device, the program or instructions executed by the processor 1001 implement the various steps of the above-described cell access method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0316] This application embodiment also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 4 The steps in the method embodiment shown are illustrated. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal can be... Figure 8 The shown is a cell access device. Specifically, Figure 11 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0317] The terminal 1100 includes, but is not limited to, at least some of the following components: radio frequency unit 1101, network module 1102, audio output unit 1103, input unit 1104, sensor 1105, display unit 1106, user input unit 1107, interface unit 1108, memory 1109, and processor 1110.

[0318] Those skilled in the art will understand that the terminal 1100 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1110 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 11 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0319] It should be understood that, in this embodiment, the input unit 1104 may include a graphics processor 11041 and a microphone 11042. The graphics processor 11041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1106 may include a display panel 11061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0320] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1101 can transmit it to the processor 1110 for processing; in addition, the radio frequency unit 1101 can send uplink data to the network-side device. Typically, the radio frequency unit 1101 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0321] The memory 1109 can be used to store software programs or instructions, as well as various data. The memory 1109 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1109 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1109 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0322] Processor 1110 may include one or more processing units; optionally, processor 1110 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1110.

[0323] The radio frequency unit 1101 is used to send a random access request in the first uplink frequency unit and receive a random access response in the first downlink frequency unit based on a Radio Network Temporary Identifier (RNTI), wherein the RNTI satisfies at least one of the following:

[0324] The length of the RNTI is greater than 16 bits;

[0325] The RNTI is a dedicated RNTI for the first downlink frequency unit;

[0326] The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit;

[0327] The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

[0328] Optionally, the configuration method for calculating the index of the uplink frequency unit of the RNTI includes at least one of the following:

[0329] Explicit configuration of network-side devices, implicit configuration of network-side devices, and default configuration.

[0330] Optionally, if the RNTI is an RNTI dedicated to the first downlink frequency unit:

[0331] The index of the first uplink frequency unit used to calculate the RNTI is defined according to the uplink frequency unit associated with the first downlink frequency unit. The first cell containing the first uplink frequency unit includes both the first downlink frequency unit and the second downlink frequency unit, and the uplink frequency units associated with the first downlink frequency unit and the second downlink frequency unit are different; or...

[0332] The index of the first uplink frequency unit used in calculating the RNTI is the index of the first uplink frequency unit relative to the first downlink frequency unit, wherein the first uplink frequency unit is associated with multiple downlink frequency units; or,

[0333] The Physical Random Access Channel (PRACH) resources in the first uplink frequency unit used by the RNTI are calculated as the PRACH resources associated with the first downlink frequency unit.

[0334] Optionally, if the PRACH resources in the first uplink frequency unit used by the RNTI are PRACH resources associated with the first downlink frequency unit, the first uplink frequency unit includes PRACH resources associated with different downlink frequency units.

[0335] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, the first uplink frequency unit and the second uplink frequency unit are spaced apart by K uplink frequency units, and the index of the first uplink frequency unit is repeated every K uplink frequency units in the first cell where the first uplink frequency unit is located, where K is a positive integer.

[0336] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, at least one parameter index of the PRACH in the first uplink frequency unit and the second uplink frequency unit is different, and the parameter index is the parameter index used to calculate the RNTI.

[0337] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit:

[0338] The RNTI calculated based on the indices of the first uplink frequency unit and the second uplink frequency unit are different.

[0339] Optionally, the offset corresponding to the RNTI calculated based on the index of the first uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol; and / or,

[0340] The offset corresponding to the RNTI calculated based on the index of the second uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol.

[0341] Optionally, when the result obtained by modulo the RNTI based on the value is determined, the RNTIs corresponding to any two PRACH resources configured by the network-side equipment in the first cell of the first uplink frequency unit are different.

[0342] Optionally, the first uplink frequency unit includes at least one uplink carrier, and the first downlink frequency unit includes at least one downlink carrier; or,

[0343] The first uplink frequency unit includes an uplink spectrum bandwidth, and the first downlink frequency unit includes a downlink spectrum bandwidth; or...

[0344] The first uplink frequency unit includes at least one uplink bandwidth portion (BWP), and the first downlink frequency unit includes at least one downlink BWP.

[0345] The aforementioned terminals can improve the access performance of the terminals, which is beneficial.

[0346] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be described again here.

[0347] This application embodiment also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 7The steps of the method embodiment shown are illustrated. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0348] Specifically, embodiments of this application also provide a network-side device, which can be... Figure 9 The shown is a cell access device. Figure 12 As shown, the network-side device 1200 includes: an antenna 1201, a radio frequency (RF) device 1202, a baseband device 1203, a processor 1204, and a memory 1205. The antenna 1201 is connected to the RF device 1202. In the uplink direction, the RF device 1202 receives information through the antenna 1201 and transmits the received information to the baseband device 1203 for processing. In the downlink direction, the baseband device 1203 processes the information to be transmitted and sends it to the RF device 1202. The RF device 1202 processes the received information and transmits it through the antenna 1201.

[0349] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1203, which includes a baseband processor.

[0350] The baseband device 1203 may include, for example, at least one baseband board on which multiple chips are disposed, such as... Figure 12 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 1205 via a bus interface to call the program or instructions in the memory 1205 to execute the network-side device operation shown in the above method embodiment.

[0351] The network-side device may also include a network interface 1206, such as a Common Public Radio Interface (CPRI).

[0352] The radio frequency device 1202 is used to send a random access request in the first uplink frequency unit; and to send a random access response in the first downlink frequency unit based on the Radio Network Temporary Identifier (RNTI), wherein the RNTI satisfies at least one of the following:

[0353] The length of the RNTI is greater than 16 bits;

[0354] The RNTI is a dedicated RNTI for the first downlink frequency unit;

[0355] The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit;

[0356] The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

[0357] Optionally, the configuration method for calculating the index of the uplink frequency unit of the RNTI includes at least one of the following:

[0358] The network-side device has explicit configuration, implicit configuration, and default configuration.

[0359] Optionally, if the RNTI is an RNTI dedicated to the first downlink frequency unit:

[0360] The index of the first uplink frequency unit used to calculate the RNTI is defined according to the uplink frequency unit associated with the first downlink frequency unit. The first cell containing the first uplink frequency unit includes both the first downlink frequency unit and the second downlink frequency unit, and the uplink frequency units associated with the first downlink frequency unit and the second downlink frequency unit are different; or...

[0361] The index of the first uplink frequency unit used in calculating the RNTI is the index of the first uplink frequency unit relative to the first downlink frequency unit, wherein the first uplink frequency unit is associated with multiple downlink frequency units; or,

[0362] The index of the first uplink frequency unit used to calculate the RNTI is uniformly defined according to the uplink frequency units associated with multiple downlink frequency units, and the physical random access channel (PRACH) resource in the first uplink frequency unit used to calculate the RNTI is the PRACH resource associated with the first downlink frequency unit.

[0363] Optionally, if the PRACH resources in the first uplink frequency unit used by the RNTI are PRACH resources associated with the first downlink frequency unit, the first uplink frequency unit includes PRACH resources associated with different downlink frequency units.

[0364] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, the first uplink frequency unit and the second uplink frequency unit are spaced apart by K uplink frequency units, and the index of the first uplink frequency unit is repeated every K uplink frequency units in the first cell where the first uplink frequency unit is located, where K is a positive integer.

[0365] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, at least one parameter index of the PRACH resource in the first uplink frequency unit and the second uplink frequency unit is different, and the parameter index is the parameter index used to calculate the RNTI.

[0366] Optionally, if the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit:

[0367] The RNTI calculated based on the indices of the first uplink frequency unit and the second uplink frequency unit are different.

[0368] Optionally, the offset corresponding to the RNTI calculated based on the index of the first uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol; and / or,

[0369] The offset corresponding to the RNTI calculated based on the index of the second uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol.

[0370] Optionally, when the result obtained by modulo the RNTI based on the value is determined, the RNTIs corresponding to any two PRACH resources configured by the network-side device in the first cell of the first uplink frequency unit are different.

[0371] Optionally, the first uplink frequency unit includes at least one uplink carrier, and the first downlink frequency unit includes at least one downlink carrier; or,

[0372] The first uplink frequency unit includes an uplink spectrum bandwidth, and the first downlink frequency unit includes a downlink spectrum bandwidth; or...

[0373] The first uplink frequency unit includes at least one uplink bandwidth portion (BWP), and the first downlink frequency unit includes at least one downlink BWP.

[0374] The aforementioned network-side equipment can improve the access performance of terminals.

[0375] Furthermore, the network-side device 1200 in this embodiment of the application also includes: a program or instructions stored in memory 1205 and executable on processor 1204, wherein processor 1204 calls the program or instructions in memory 1205 to execute. Figure 9 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0376] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described cell access method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0377] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0378] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described cell access method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0379] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0380] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described cell access method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0381] This application also provides a wireless communication system, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the cell access method of the terminal as described above, and the network-side device can be used to execute the steps of the cell access method of the network-side device as described above.

[0382] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0383] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0384] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A cell access method, characterized in that, include: The terminal sends a random access request in the first uplink frequency unit; The terminal receives a random access response in the first downlink frequency unit based on a Radio Network Temporary Identifier (RNTI), wherein the RNTI satisfies at least one of the following: The length of the RNTI is greater than 16 bits; The RNTI is a dedicated RNTI for the first downlink frequency unit; The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit; The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

2. The method according to claim 1, characterized in that, The configuration method used to calculate the index of the uplink frequency unit of the RNTI includes at least one of the following: Explicit configuration of network-side devices, implicit configuration of network-side devices, and default configuration.

3. The method according to claim 1 or 2, characterized in that, In the case where the RNTI is dedicated to the first downlink frequency unit: The index of the first uplink frequency unit used to calculate the RNTI is defined according to the uplink frequency unit associated with the first downlink frequency unit. The first cell containing the first uplink frequency unit includes both the first downlink frequency unit and the second downlink frequency unit, and the uplink frequency units associated with the first downlink frequency unit and the second downlink frequency unit are different; or... The index of the first uplink frequency unit used in calculating the RNTI is the index of the first uplink frequency unit relative to the first downlink frequency unit, wherein the first uplink frequency unit is associated with multiple downlink frequency units; or, The Physical Random Access Channel (PRACH) resources in the first uplink frequency unit used by the RNTI are calculated as the PRACH resources associated with the first downlink frequency unit.

4. The method according to claim 3, characterized in that, When the PRACH resources in the first uplink frequency unit used by the RNTI are calculated to be PRACH resources associated with the first downlink frequency unit, the first uplink frequency unit includes PRACH resources associated with different downlink frequency units.

5. The method according to any one of claims 1 to 4, characterized in that, When the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, the first uplink frequency unit and the second uplink frequency unit are spaced apart by K uplink frequency units. In the first cell where the first uplink frequency unit is located, the index of the uplink frequency unit is repeated every K uplink frequency units, where K is a positive integer.

6. The method according to any one of claims 1 to 5, characterized in that, When the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, at least one parameter index of the PRACH in the first uplink frequency unit and the second uplink frequency unit is different, and the parameter index is the parameter index used to calculate the RNTI.

7. The method according to any one of claims 1 to 6, characterized in that, When the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit: The RNTI calculated based on the indices of the first uplink frequency unit and the second uplink frequency unit are different.

8. The method according to claim 7, characterized in that, The offset corresponding to the RNTI calculated based on the index of the first uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol. And / or, The offset corresponding to the RNTI calculated based on the index of the second uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol.

9. The method according to any one of claims 1 to 8, characterized in that, When the result obtained by modulo the numerical value of the RNTI is determined, the RNTIs corresponding to any two PRACH resources configured by the network-side equipment in the first cell of the first uplink frequency unit are different.

10. The method according to any one of claims 1 to 9, characterized in that, The first uplink frequency unit includes at least one uplink carrier, and the first downlink frequency unit includes at least one downlink carrier; or, The first uplink frequency unit includes an uplink spectrum bandwidth, and the first downlink frequency unit includes a downlink spectrum bandwidth; or... The first uplink frequency unit includes at least one uplink bandwidth portion (BWP), and the first downlink frequency unit includes at least one downlink BWP.

11. A cell access method, characterized in that, include: The network-side device sends a random access request in the first uplink frequency unit; Network-side equipment sends a random access response in the first downlink frequency unit based on the Radio Network Temporary Identifier (RNTI), wherein the RNTI satisfies at least one of the following: The length of the RNTI is greater than 16 bits; The RNTI is a dedicated RNTI for the first downlink frequency unit; The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit; The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

12. The method according to claim 11, characterized in that, The configuration method used to calculate the index of the uplink frequency unit of the RNTI includes at least one of the following: The network-side device has explicit configuration, implicit configuration, and default configuration.

13. The method according to claim 11 or 12, characterized in that, In the case where the RNTI is dedicated to the first downlink frequency unit: The index of the first uplink frequency unit used to calculate the RNTI is defined according to the uplink frequency unit associated with the first downlink frequency unit. The first cell containing the first uplink frequency unit includes both the first downlink frequency unit and the second downlink frequency unit, and the uplink frequency units associated with the first downlink frequency unit and the second downlink frequency unit are different; or... The index of the first uplink frequency unit used in calculating the RNTI is the index of the first uplink frequency unit relative to the first downlink frequency unit, wherein the first uplink frequency unit is associated with multiple downlink frequency units; or, The index of the first uplink frequency unit used to calculate the RNTI is uniformly defined according to the uplink frequency units associated with multiple downlink frequency units, and the physical random access channel (PRACH) resource in the first uplink frequency unit used to calculate the RNTI is the PRACH resource associated with the first downlink frequency unit.

14. The method according to claim 13, characterized in that, When the PRACH resources in the first uplink frequency unit used by the RNTI are calculated to be PRACH resources associated with the first downlink frequency unit, the first uplink frequency unit includes PRACH resources associated with different downlink frequency units.

15. The method according to any one of claims 11 to 14, characterized in that, When the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, the first uplink frequency unit and the second uplink frequency unit are spaced apart by K uplink frequency units. In the first cell where the first uplink frequency unit is located, the index of the uplink frequency unit is repeated every K uplink frequency units, where K is a positive integer.

16. The method according to any one of claims 11 to 15, characterized in that, When the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, at least one parameter index of the PRACH resource in the first uplink frequency unit and the second uplink frequency unit is different, and the parameter index is the parameter index used to calculate the RNTI.

17. The method according to any one of claims 11 to 16, characterized in that, When the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit: The RNTI calculated based on the indices of the first uplink frequency unit and the second uplink frequency unit are different.

18. The method according to claim 17, characterized in that, The offset corresponding to the RNTI calculated based on the index of the first uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol. And / or, The offset corresponding to the RNTI calculated based on the index of the second uplink frequency unit is the offset configured by the terminal receiving network-side device or the offset specified by the protocol.

19. The method according to any one of claims 11 to 18, characterized in that, When the result obtained by modulo the RNTI based on the numerical value is determined, the RNTIs corresponding to any two PRACH resources configured by the network-side equipment in the first cell of the first uplink frequency unit are different.

20. The method according to any one of claims 11 to 19, characterized in that, The first uplink frequency unit includes at least one uplink carrier, and the first downlink frequency unit includes at least one downlink carrier; or, The first uplink frequency unit includes an uplink spectrum bandwidth, and the first downlink frequency unit includes a downlink spectrum bandwidth; or... The first uplink frequency unit includes at least one uplink bandwidth portion (BWP), and the first downlink frequency unit includes at least one downlink BWP.

21. A cell access device, characterized in that, include: The transmitting module is used to transmit a random access request in the first uplink frequency unit; The receiving module is configured to receive a random access response in the first downlink frequency unit based on a Radio Network Temporary Identifier (RNTI), wherein the RNTI satisfies at least one of the following: The length of the RNTI is greater than 16 bits; The RNTI is a dedicated RNTI for the first downlink frequency unit; The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit; The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

22. The apparatus according to claim 21, characterized in that, In the case where the RNTI is dedicated to the first downlink frequency unit: The index of the first uplink frequency unit used to calculate the RNTI is defined according to the uplink frequency unit associated with the first downlink frequency unit. The first cell containing the first uplink frequency unit includes both the first downlink frequency unit and the second downlink frequency unit, and the uplink frequency units associated with the first downlink frequency unit and the second downlink frequency unit are different; or... The index of the first uplink frequency unit used in calculating the RNTI is the index of the first uplink frequency unit relative to the first downlink frequency unit, wherein the first uplink frequency unit is associated with multiple downlink frequency units; or, The Physical Random Access Channel (PRACH) resources in the first uplink frequency unit used by the RNTI are calculated as the PRACH resources associated with the first downlink frequency unit.

23. The apparatus according to claim 21 or 22, characterized in that, When the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, at least one parameter index of the PRACH in the first uplink frequency unit and the second uplink frequency unit is different, and the parameter index is the parameter index used to calculate the RNTI.

24. The apparatus according to any one of claims 21 to 23, characterized in that, When the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit: The RNTI calculated based on the indices of the first uplink frequency unit and the second uplink frequency unit are different.

25. A cell access device, characterized in that, include: The receiving module is used to send a random access request in the first uplink frequency unit; The transmitting module is configured to transmit a random access response in the first downlink frequency unit based on a Radio Network Temporary Identifier (RNTI), wherein the RNTI satisfies at least one of the following: The length of the RNTI is greater than 16 bits; The RNTI is a dedicated RNTI for the first downlink frequency unit; The index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, and the first cell where the first uplink frequency unit is located also includes the second uplink frequency unit; The RNTI is determined by taking the modulo of the numerical value, which is calculated based on the index of the first uplink frequency unit.

26. The apparatus according to claim 25, characterized in that, In the case where the RNTI is dedicated to the first downlink frequency unit: The index of the first uplink frequency unit used to calculate the RNTI is defined according to the uplink frequency unit associated with the first downlink frequency unit. The first cell containing the first uplink frequency unit includes both the first downlink frequency unit and the second downlink frequency unit, and the uplink frequency units associated with the first downlink frequency unit and the second downlink frequency unit are different; or... The index of the first uplink frequency unit used in calculating the RNTI is the index of the first uplink frequency unit relative to the first downlink frequency unit, wherein the first uplink frequency unit is associated with multiple downlink frequency units; or, The index of the first uplink frequency unit used to calculate the RNTI is uniformly defined according to the uplink frequency units associated with multiple downlink frequency units, and the physical random access channel (PRACH) resource in the first uplink frequency unit used to calculate the RNTI is the PRACH resource associated with the first downlink frequency unit.

27. The apparatus according to claim 25 or 26, characterized in that, When the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit, at least one parameter index of the PRACH resource in the first uplink frequency unit and the second uplink frequency unit is different, and the parameter index is the parameter index used to calculate the RNTI.

28. The apparatus according to any one of claims 25 to 27, characterized in that, When the index of the first uplink frequency unit used to calculate the RNTI is the same as the index of the second uplink frequency unit: The RNTI calculated based on the indices of the first uplink frequency unit and the second uplink frequency unit are different.

29. A terminal, characterized in that, It includes a processor and a memory, the memory storing programs or instructions that can run on the processor, the programs or instructions being executed by the processor to implement the steps of the cell access method as described in any one of claims 1 to 10.

30. A network-side device, characterized in that, It includes a processor and a memory, the memory storing programs or instructions that can run on the processor, the programs or instructions being executed by the processor to implement the steps of the cell access method as described in any one of claims 11 to 20.

31. A chip, characterized in that, The chip includes a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run a program or instructions, the program or instructions being executed by the processor to implement the steps of the cell access method as described in any one of claims 1 to 10, or to implement the steps of the cell access method as described in any one of claims 11 to 20.

32. A computer program product, characterized in that, The computer program product is stored in a storage medium and is executed by at least one processor to implement the steps of the cell access method as claimed in any one of claims 1 to 10, or to implement the steps of the cell access method as claimed in any one of claims 11 to 20.

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