Generating scrambled payloads using initialization scrambling sequences

Abstract

Methods, systems, and devices related to digital wireless communications are disclosed, and more specifically, techniques related to generating a scrambled payload that uses an initialization scrambling sequence to distinguish wireless devices. In one example aspect, a method of wireless communication can include generating a scrambled payload, where the scrambled payload is generated using an initialization scrambling sequence that is based at least in part on a preamble index and includes a 31-bit length. The method can also include transmitting a first message to a communication node in a random access procedure, the first message including the scrambled payload.

Description

Technical Field

[0001] This patent document typically relates to wireless communication. Background Technology

[0002] Mobile communication technology is propelling the world towards an increasingly interconnected and networked society. The rapid development and technological advancements in mobile communications have led to greater demands for capacity and connectivity. Other factors, such as energy consumption, equipment cost, spectrum efficiency, and latency, are also important for meeting the needs of various communication scenarios. Various technologies are being discussed, including new methods for providing higher quality of service. Summary of the Invention

[0003] This document discloses methods, systems, and apparatuses related to digital wireless communication, and more specifically, methods, systems, and apparatuses related to techniques for generating scrambled payloads using an initial scrambling sequence.

[0004] In one exemplary aspect, a method for wireless communication includes generating a scrambled payload, wherein the scrambled payload is generated using an initial scrambling sequence that is at least partially based on a preamble index and comprises a length of 31 bits. The method also includes transmitting a first message comprising the scrambled payload to a communication node during a random access procedure.

[0005] In another exemplary aspect, a method for wireless communication includes receiving a first message from a wireless device during a random access procedure, the first message including a scrambled payload, wherein the scrambled payload is generated using an initial scrambling sequence at least partially based on a preamble index and comprising a length of 31 bits. The method also includes transmitting a random access downlink transmission to the wireless device in response to receiving the first message.

[0006] In another exemplary aspect, a wireless communication device including a processor is disclosed. The processor is configured to implement the methods described herein.

[0007] In yet another exemplary aspect, the various techniques described herein may be embodied in processor-executable code and stored on a computer-readable program medium.

[0008] Details of one or more embodiments are set forth in the accompanying appendices, drawings, and the description below. Other features will be apparent from the description, drawings, and claims. Attached Figure Description

[0009] Figure 1 A block diagram of an example transmitter process is shown.

[0010] Figure 2The signaling processing for the four-step random access channel (RACH) procedure is shown.

[0011] Figure 3 The signaling processing for the two-step RACH procedure is shown.

[0012] Figure 4 A block diagram is shown for example 31-bit initialization of the scrambling sequence.

[0013] Figure 5 A block diagram is shown for example 31-bit initialization of the scrambling sequence.

[0014] Figure 6 A block diagram is shown for example 31-bit initialization of the scrambling sequence.

[0015] Figure 7 A block diagram of an example method for generating a scrambled payload using an initial scrambling sequence is shown.

[0016] Figure 8 An example of a wireless communication system is shown, in which techniques according to one or more embodiments of the present technology can be applied.

[0017] Figure 9 It is a block diagram representation of a part of a hardware platform. Detailed Implementation

[0018] Section headings are used in this document for ease of understanding only and do not limit the scope of the embodiments to the sections in which they are described. Furthermore, although embodiments are described with reference to 5G examples, the disclosed techniques can be applied to wireless systems using protocols other than 5G or 3GPP protocols.

[0019] The development of next-generation wireless communications (5G (NR) New Radio) is part of the ongoing evolution of mobile broadband to meet increasing network demands. NR will provide greater throughput to allow more users to connect simultaneously. Other aspects such as energy consumption, equipment cost, spectrum efficiency, and latency are also important for meeting the needs of various communication scenarios.

[0020] This patent document describes a technique for generating a scrambled payload using a random access initialization scrambling sequence, for example, for multistep RACH communication. A wireless device can generate a first message including a scrambled payload scrambled using the initialization scrambling sequence. The initialization scrambling sequence may be at least partially based on a preamble index and includes a length of 31 bits.

[0021] Figure 1 A block diagram of an example transmitter process is shown. (e.g.) Figure 1 The transmitter procedure shown can indicate a technique for scrambling the payload using a scrambling sequence.

[0022] Payload 102 can be encoded using channel coding 104 to generate coded bits 106. The coded bits 106 can be scrambled into a scrambled payload 108 using a scrambling sequence 110.

[0023] In many cases, scrambling sequence generators can utilize To be initialized, where It can be equal to the higher-layer parameter `dataScramblingIdentityPUSCH` (if configured), and the Radio Network Temporary Identifier (RNTI) can be equal to `C-RNTI`, `MCS-C-RNTI`, or `CS-RNTI`. Otherwise, ,in This may correspond to the RNTI associated with Physical Uplink Shared Channel (PUSCH) transmission. Example equations for initializing the scrambling sequence may include: .

[0024] For the payload (e.g., the third message in a four-step RACH signaling process), parameter n RNTI and n ID The scrambling sequence can be known. The scrambling load 108 can be modulated (112).

[0025] However, for payload transmissions that include a two-step RACH process, parameters (e.g., wireless network temporary identifier (n)) are important. RNTI Temporary Cell RNTI (TC-RNTI) may be unavailable. In this case, it may be unknown how to generate the initial scrambling sequence using equations such as the example equations shown above for initializing the scrambling sequence. It may also be unknown how to distinguish the initial scrambling sequence for each terminal (or user equipment (UE)).

[0026] Figure 2 Signaling processing 200 for the four-step RACH procedure is illustrated. UE 210 can use the random access procedure to establish a connection with base station (BS) 220 and the network. For contention-based random access, UE 210 can obtain uplink synchronization information and a unique UE_ID upon successful network access.

[0027] like Figure 2As shown, the first message MSG1 may include UE 210 transmitting a random access (RA) preamble uplink transmission. The second message MSG2 may include BS 220 transmitting an RA response downlink transmission. The third message MSG3 may include UE 210 transmitting an uplink transmission including UE_ID or control information to BS 220. The fourth message MSG4 may include BS 220 transmitting a radio resource control (RRC) establishment / contention resolution message.

[0028] Figure 3 Signaling processing 300 for a two-step RACH procedure is illustrated. Two-step RACH may include methods to reduce RA delay and downlink signaling resources. For contention-based random access, UE 310 can obtain uplink synchronization information and a unique UE_ID upon successful network access.

[0029] The two-step RACH process may include uplink transmission of the first message MSGA and downlink transmission of the second message MSGB. The first message MSGA may include UE 310 transmitting payload and preamble MSG1, as well as UE_ID / control information MSG3. The second message MSGB may include BS 320 transmitting random access response MSG2 and RRC establishment / contention resolution message MSG4 to UE 310.

[0030] In the case of transmitting payloads in an MSGA, the payload can be encoded and scrambled using a scrambling sequence. However, due to the scrambling equation... The parameters in the code may be unavailable, so a scrambling sequence may not be generated.

[0031] This embodiment may involve generating a scrambled payload using an initial scrambling sequence and distinguishing the UE during a two-step RACH process. The initial scrambling sequence may include a 31-bit length. The 31-bit length sequence may include multiple parts (such as RNTI, preamble index, cell_ID, root index, etc.).

[0032] Example 1

[0033] Figure 4A block diagram of an example 31-bit initialization scrambling sequence 400 is shown. The initialization scrambling sequence 400 may include a 16-bit RA_RNTI, a 6-bit preamble_index, and a 9-bit cell_ID. The RA_RNTI may be determined by the time-frequency resources of the Physical Random Access Channel (PRACH) timing. The Cell_ID may be generated from a 10-bit cell_ID, possibly with one bit removed. The vacated bit may include the most significant bit (MSB) of the 10-bit cell_ID. In some embodiments, the vacated bit may include one of the higher 8 bits. In some embodiments, the order of the RA_RNTI, preamble_index, and cell_ID may be arbitrary.

[0034] A 31-bit sequence 400 can be represented by the following equation:

[0035]

[0036] The RNTI can include RA_RNTI, where n_ID can be generated by removing one bit from the 10-bit cell_ID, and the vacated bit can be the MSB of the 10-bit cell_ID. In some embodiments, the RNTI can be msgB RNTI, which can be determined by the time frequency of the PRACH timing, which may differ from the range of RA_RNTI.

[0037] Example 2

[0038] In the second example embodiment, the initial scrambling sequence may include a 16-bit RNTI, a 6-bit preamble_index, and a 10-bit cell_ID. The RNTI may be a modified RA_RNTI, which can be calculated using the traditional RA_RNTI and one bit of the 6-bit preamble_index.

[0039] RA_RNTI can be obtained in the following ways:

[0040] RA-RNTI = 1 + s_id + 14 × t_id + 14 × 80 × f_id + 14 × 80 × 8 × ul_carrier_id, where s_id identifies the index of the first OFDM symbol specifying the PRACH (0 <= s_id < 14), t_id identifies the index of the first time slot specifying the PRACH in the system frame (0 <= t_id < 80), f_id identifies the index of the PRACH in the frequency domain (0 <= f_id < 8), and ul_carrier_id identifies the UL carrier type (0 for NUL carriers and 1 for SUL carriers).

[0041] In some embodiments, the MSB of the 6-bit preamble_index can be combined with the uplink carrier identifier (ul_carrier_id).

[0042] In some embodiments, the MSB of the 6-bit preamble_index can be combined with f_id.

[0043] In some embodiments, the MSB of the 6-bit preamble_index can be combined with s_id.

[0044] In another embodiment, the 1 bit can be one of the 6 bits of the preamble_index. In this embodiment, the order of RNTI, preamble_index, and cell_ID can be arbitrary.

[0045] A 31-bit sequence can be represented by the following equation:

[0046]

[0047] RNTI can be a modified RA_RNTI, and one bit of the 6-bit preamble_index can be combined with RA_RNTI, and n_ID can be a 10-bit cell_ID.

[0048] Example 3

[0049] Figure 5 A block diagram of an example 31-bit initialization scrambling sequence 500 is shown. The initialization scrambling sequence 500 may include a 16-bit RA_RNTI, a 6-bit preamble_index, and a 9-bit n_ID. The RA_RNTI may be determined by the time-frequency resources of the PRACH timing, and the n_ID may be a configurable 9-bit n_ID that can vary for different cells. In some embodiments, the order of the RNTI, preamble_index, and cell_ID can be arbitrary.

[0050] A 31-bit sequence 500 can be represented by the following equation:

[0051]

[0052] The network can be configured with n_ID. Different n_IDs can be configured for neighboring cells.

[0053] In an embodiment, for an 839-bit preamble, n_ID may include a 9-bit root_index, which can be generated from a 10-bit root_index with one bit removed. The root_index can be used to generate the preamble sequence.

[0054] In an embodiment, for a 139-bit preamble, n_ID may include an 8-bit root_index.

[0055] Example 4

[0056] Figure 6 A block diagram of an example 31-bit initialization scrambling sequence 600 is shown. The initialization scrambling sequence 600 may include a 16-bit RA_RNTI, a 5-bit preamble_index, and a 10-bit cell_ID. The RA_RNTI can be determined by the time-frequency resources of the PRACH timing.

[0057] If the number of preamble bits does not exceed 32, then 5 bits may be sufficient to represent the preamble_index. If the range of preamble_index is greater than 32, then a 5-bit preamble_index can be generated from a 6-bit preamble_index by removing 1 bit, where the empty bit can be the MSB of the 6-bit preamble_index. In the embodiment, the order of RA_RNTI, preamble_index, and cell_ID can be arbitrary.

[0058] A 31-bit sequence can be represented as:

[0059]

[0060] Figure 7 A block diagram of a method for generating a scrambled payload using an initialization scrambling sequence is shown. The method may include generating the scrambled payload by a wireless device, wherein the scrambled payload is generated using an initialization scrambling sequence at least partially based on a preamble index and comprising a length of 31 bits (block 702). The initialization scrambling sequence may include the initialization scrambling sequence described in any of the example embodiments 1-4 herein. The method may further include transmitting a first message to a communication node during a random access procedure, the first message including the scrambled payload (block 704). The first message may be part of an MSGA transmitted from the UE to the BS, as described in this disclosure. Figure 3 As shown in the image.

[0061] In some embodiments, the initial scrambling sequence includes a Radio Network Temporary Identifier (RNTI).

[0062] In some embodiments, the initial scrambling sequence includes a preamble index.

[0063] In some embodiments, the initial scrambling sequence includes a cell identifier.

[0064] In some embodiments, the initial scrambling sequence includes a root index.

[0065] In some embodiments, the initial scrambling sequence includes a Random Access (RA) RNTI with a length of 16 bits, a preamble index with a length of 6 bits, and a cell identifier with a length of 9 bits.

[0066] In some embodiments, the initialization sequence is represented by the following equation:

[0067] Where n_ID is the cell identifier.

[0068] In some embodiments, the method includes removing the most significant bit (MSB) of a cell identifier with a length of 10 bits, and the initial scrambling sequence includes a random access (RA) RNTI with a length of 16 bits, a preamble index with a length of 6 bits, and a cell identifier with a length of 9 bits.

[0069] In some embodiments, the initial scrambling sequence includes an RNTI of 16 bits, a preamble index of 6 bits, and a cell identifier of 10 bits, wherein the most significant bit of the preamble index is combined with the RNTI such that the length of the initial scrambling sequence includes 31 bits.

[0070] In some embodiments, the initialization sequence is represented by the following equation:

[0071] .

[0072] In some embodiments, the initialization sequence includes a RA RNTI of 16 bits, a preamble index of 6 bits, and a configurable identifier (n_ID) of 9 bits.

[0073] In some embodiments, the initialization sequence is represented by the following equation:

[0074] .

[0075] In some embodiments, n_ID is derived from a 10-bit root_index, wherein 1 bit is removed from the root_index, and the preamble of the first message comprises a length of 839 bits.

[0076] In some embodiments, n_ID is derived from the 8-bit root_index, where the preamble of the first message includes a length of 139 bits.

[0077] In some embodiments, the initialization sequence includes a 16-bit RA RNTI, a 5-bit preamble index, and a 10-bit cell identifier.

[0078] In some embodiments, the initialization sequence is represented by the following equation:

[0079] .

[0080] In some embodiments, the method includes using the time-frequency resources of a Physical Random Access Channel (PRACH) instance to determine the RA RNTI.

[0081] In some embodiments, the method includes deleting the most significant bit of a 6-bit preamble index, such that the initialization sequence includes a RA RNTI of 16 bits, a 5-bit preamble index, and a 10-bit cell identifier.

[0082] In another embodiment, a wireless communication method includes receiving a first message from a wireless device during a random access procedure. The first message includes a scrambled payload generated using an initial scrambling sequence at least partially based on a preamble index and comprising a length of 31 bits. The method further includes transmitting a random access downlink transmission to the wireless device in response to receiving the first message.

[0083] In some embodiments, the initial scrambling sequence includes a Radio Network Temporary Identifier (RNTI).

[0084] In some embodiments, the initial scrambling sequence includes a preamble index.

[0085] In some embodiments, the initial scrambling sequence includes a cell identifier.

[0086] In some embodiments, the initial scrambling sequence includes a root index.

[0087] In some embodiments, the initial scrambling sequence includes a Random Access (RA) RNTI with a length of 16 bits, a preamble index with a length of 6 bits, and a cell identifier with a length of 9 bits.

[0088] In some embodiments, the initialization sequence is represented by the following equation:

[0089] Where n_ID is the cell identifier.

[0090] In some embodiments, the most significant bit (MSB) of the cell identifier, which has a length of 10 bits, is left empty, and the initial scrambling sequence includes a random access (RA) RNTI with a length of 16 bits, a preamble index with a length of 6 bits, and a cell identifier with a length of 9 bits.

[0091] In some embodiments, the initial scrambling sequence includes an RNTI of 16 bits, a preamble index of 6 bits, and a cell identifier of 10 bits, wherein the most significant bit of the preamble index is combined with the RNTI such that the length of the initial scrambling sequence includes 31 bits.

[0092] In some embodiments, the initialization sequence is represented by the following equation:

[0093] .

[0094] In some embodiments, the initialization sequence includes a RA RNTI of 16 bits, a preamble index of 6 bits, and an n identifier (n_ID) of 9 bits.

[0095] In some embodiments, the initialization sequence is represented by the following equation:

[0096] .

[0097] In some embodiments, n_ID is derived from a 10-bit root_index, with 1 bit removed from the root_index, and the preamble of the first message comprises a length of 839 bits.

[0098] In some embodiments, n_ID is derived from the 8-bit root_index, where the preamble of the first message includes a length of 139 bits.

[0099] In some embodiments, the initialization sequence includes a 16-bit RA RNTI, a 5-bit preamble index, and a 10-bit cell identifier.

[0100] In some embodiments, the initialization sequence is represented by the following equation:

[0101]

[0102] In some embodiments, RA RNTI is configured to be determined using the time-frequency resources of a Physical Random Access Channel (PRACH) instance.

[0103] In some embodiments, the most significant bit of the 6-bit preamble index is left empty, such that the initialization sequence includes a RA RNTI of 16 bits, a preamble index of 5 bits, and a cell identifier of 10 bits, and the preamble_index range is greater than 32.

[0104] Figure 8 An example of a wireless communication system in which one or more embodiments of the present technology can be applied is shown. The wireless communication system 800 may include one or more base stations (BS) 805a, 805b, one or more wireless devices 810a, 810b, 810c, 810d, and a core network 825. Base stations 805a, 805b may provide wireless services to wireless devices 810a, 810b, 810c, and 810d in one or more wireless sectors. In some embodiments, base stations 805a, 805b include directional antennas to generate two or more directional beams to provide wireless coverage in different sectors.

[0105] The core network 825 can communicate with one or more base stations 805a, 805b. The core network 825 provides connectivity with other wireless communication systems and wired communication systems. The core network may include one or more service subscription databases to store information related to subscribed wireless devices 810a, 810b, 810c, and 810d. The first base station 805a can provide wireless services based on a first radio access technology, while the second base station 805b can provide wireless services based on a second radio access technology. Depending on the deployment scenario, base stations 805a and 805b can be located in quasi-coordinated locations or can be installed separately in the field. Wireless devices 810a, 810b, 810c, and 810d can support multiple different radio access technologies. In some embodiments, base stations 805a and 805b can be configured to implement some of the technologies described in this document. Wireless devices 810a to 810d can be configured to implement some of the technologies described in this document.

[0106] In some implementations, a wireless communication system may include multiple networks using different wireless technologies. Dual-mode or multi-mode wireless devices include two or more wireless technologies that can be used to connect to different wireless networks.

[0107] Figure 9This is a block diagram representation of a hardware platform. Hardware platform 905, such as a network device, base station, or wireless device (or UE), may include processor electronics 910 (such as a microprocessor) implementing one or more of the technologies described in this document. Hardware platform 905 may include transceiver electronics 915 for transmitting and / or receiving wired or wireless signals via one or more communication interfaces such as an antenna 920 or a wired interface. Hardware platform 905 may implement other communication interfaces having defined protocols for transmitting and receiving data. Hardware platform 905 may include one or more memories (not explicitly shown) configured to store information such as data and / or instructions. In some embodiments, processor electronics 910 may include at least a portion of transceiver electronics 915. In some embodiments, at least some of the disclosed technologies, modules, or functions and network nodes are implemented using hardware platform 905.

[0108] Based on the foregoing, it will be understood that specific embodiments of the present disclosure have been described herein for illustrative purposes, but various modifications may be made without departing from the scope of the invention. Therefore, the present disclosure is not limited except for the appended claims.

[0109] The disclosed embodiments, as well as other embodiments, modules, and functional operations described in this document, can be implemented in digital electronic circuits, or in computer software, firmware, or hardware (including the structures and their structural equivalents disclosed in this document), or in a combination of one or more of them. The disclosed and other embodiments can be implemented as one or more computer program products, i.e., computer program instructions encoded on a computer-readable medium for execution by or control of the operation of a data processing apparatus. The computer-readable medium can be a machine-readable storage device, a machine-readable storage substrate, a storage device, a composition influencing machine-readable propagation signals, or a combination of one or more of them. The term "data processing apparatus" encompasses all means, devices, and machines for processing data, including, for example, a programmable processor, a computer, or multiple processors or computers. In addition to hardware, the apparatus may include code that creates an execution environment for the computer program under consideration, for example, code constituting processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them. Propagation signals are artificially generated signals, such as machine-generated electrical, optical, or electromagnetic signals, which are generated to encode information for transmission to a suitable receiving device.

[0110] Computer programs (also known as programs, software, software applications, scripts, or code) can be written in any programming language, including compiled or interpreted languages, and can be deployed in any form, including as standalone programs or as modules, components, subroutines, or other units suitable for a computing environment. A computer program does not necessarily correspond to a file in a file system. A program can be stored as a part of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple co-located files (e.g., a file storing one or more modules, subroutines, or code sections). Computer programs can be deployed to be executed on one or more computers (located in one location or distributed across multiple locations and interconnected via a communication network).

[0111] The processes and logic flows described in this document can be executed by one or more programmable processors, which perform functions by executing one or more computer programs by processing input data and generating outputs. Processes and logic flows can also be executed using special-purpose logic circuits, and the devices can be implemented as special-purpose logic circuits, such as FPGAs (Field-Programmable Gate Arrays) or ASICs (Application-Specific Integrated Circuits).

[0112] For example, processors suitable for executing computer programs include general-purpose microprocessors and special-purpose microprocessors, as well as any one or more processors of any kind of digital computer. Typically, the processor receives instructions and data from read-only memory or random access memory, or both. Essential components of a computer are a processor for executing instructions and one or more storage devices for storing instructions and data. Typically, a computer also includes a mass storage device (e.g., a hard disk, magneto-optical disk, or optical disk) operatively coupled to one or more mass storage devices for storing data, to receive data from or transfer data to said mass storage device, or both. However, a computer does not need such a device. Computer-readable media suitable for storing computer program instructions and data include various forms of non-volatile memory, media, and memory devices, including, for example, semiconductor memory devices, such as EPROM, EEPROM, and flash memory devices; hard disks, such as internal hard disks or removable hard disks; magneto-optical disks; and CD-ROM and DVD-ROM optical disks. The processor and the memory may be supplemented or incorporated into dedicated logic circuitry.

[0113] While this patent document contains numerous details, these should not be construed as limiting the scope of any invention or the scope of what may be claimed, but rather as a description of features specific to particular embodiments of a particular invention. In the context of individual embodiments, certain features described in this patent document may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually in multiple embodiments or in any suitable sub-combination. Furthermore, although the foregoing features may be described as functioning in certain combinations, or even originally claimed in this way, in some cases one or more features from said combination may be omitted from that combination, and said combination may involve sub-combinations or variations of sub-combinations.

[0114] Similarly, although operations are described in a specific order in the accompanying drawings, this should not be construed as requiring these operations to be performed in the specific order or sequence shown, or requiring all of the shown operations to obtain the desired result. Furthermore, the separation of various system components in the embodiments described in this patent document should not be construed as requiring such separation in all embodiments.

[0115] Only some implementation methods and examples are described, and other implementation methods, enhancements and modifications can be made based on the content described and illustrated in this patent document.

Claims

1. A method for wireless communication, comprising: The scrambled payload is generated by the wireless device using an initialization scrambling sequence, which includes a Radio Network Temporary Identifier (RNTI), a preamble index, and a cell identifier represented as n_ID. The initialization scrambling sequence portion is generated by the... Indicates and is partly composed of This indicates that the RNTI has a length of 16 bits, the preamble index has a length of 6 bits, and the cell identifier has a length of 10 bits, wherein the RNTI includes a random access RA RNTI for the first message, and wherein the RNTI is calculated based on one bit of the RA RNTI and the 6 bits of the preamble index; as well as The first message, which includes the scrambled payload, is transmitted by the wireless device to the communication node during a random access process.

2. The method according to claim 1, wherein, The length of the initial scrambling sequence is 31 bits.

3. A method for wireless communication, comprising: During the random access procedure, a first message is received from the radio device. This first message includes a scrambled payload generated using an initialization scrambling sequence. The initialization scrambling sequence includes a Radio Network Temporary Identifier (RNTI), a preamble index, and a cell identifier represented as n_ID. The initialization scrambling sequence portion is generated by the... Indicates and is partly composed of This indicates that the RNTI has a length of 16 bits, the preamble index has a length of 6 bits, and the cell identifier has a length of 10 bits, wherein the RNTI includes the Random Access RA RNTI for the first message, and wherein the RNTI is calculated based on one bit of the RA RNTI and the 6 bits of the preamble index; as well as In response to receiving the first message, a random access downlink transmission is sent to the wireless device.

4. The method according to claim 3, wherein, The length of the initial scrambling sequence is 31 bits.

5. An apparatus for wireless communication, the apparatus comprising a processor configured to: The scrambling payload is generated using an initialization scrambling sequence, which includes a Radio Network Temporary Identifier (RNTI), a preamble index, and a cell identifier represented as n_ID, wherein the initialization scrambling sequence portion is generated by the... Indicates and is partly composed of This indicates that the RNTI has a length of 16 bits, the preamble index has a length of 6 bits, and the cell identifier has a length of 10 bits, wherein the RNTI includes a Random Access RA RNTI for the first message, and wherein the RNTI is calculated based on one bit of the RA RNTI and the 6 bits of the preamble index; and During random access, the first message is transmitted to the communication node, the first message including the scrambled payload.

6. The apparatus according to claim 5, wherein, The length of the initial scrambling sequence is 31 bits.

7. An apparatus for wireless communication, the apparatus comprising a processor configured to: During the random access procedure, a first message is received from the radio device. This first message includes a scrambled payload generated using an initialization scrambling sequence. The initialization scrambling sequence includes a Radio Network Temporary Identifier (RNTI), a preamble index, and a cell identifier represented as n_ID. The initialization scrambling sequence portion is generated by the... Indicates and is partly composed of This indicates that the RNTI has a length of 16 bits, the preamble index has a length of 6 bits, and the cell identifier has a length of 10 bits, wherein the RNTI includes a Random Access RA RNTI for the first message, and wherein the RNTI is calculated based on one bit of the RA RNTI and the 6 bits of the preamble index; and In response to receiving the first message, a random access downlink transmission is sent to the wireless device.

8. The apparatus according to claim 7, wherein, The length of the initial scrambling sequence is 31 bits.

9. A non-transitory computer-readable medium having code stored thereon, said code, when executed by a processor, causing the processor to implement the method according to any one of claims 1 to 4.

Images