WO2014019518A1 - Random access method and user equipment - Google Patents

Abstract

Embodiments of the present invention provide a random access method and a user equipment. The method comprises: determining an available signature sequence set; selecting a first signature sequence from the available signature sequence set, and outputting the first signature sequence to a physical logic module; and the physical logic module executing signature sequence selection based on the first signature sequence, generating a preamble sequence according to a result of the signature sequence selection, and sending the preamble sequence to a base station. In the embodiments of the present invention, a determined first signature sequence is input into the physical logic module, so that in an entire random access process, the physical logic module always uses a same signature sequence.

Description

 Random access method and user equipment

 Embodiments of the present invention relate to the field of wireless communications, and more particularly, to a method and user equipment for random access. Background technique

 With the continuous development of communication technology, the new mobile communication system has been favored for many advantages such as its powerful multimedia communication capability, high-speed data transmission rate and efficient spectrum utilization, and has become the development goal of mobile communication in the future.

 Take the Wideband Code Division Multiple Access (WCDMA) system as an example. The channels of WCDMA can be divided into two categories: dedicated channels and common channels. The dedicated channel includes: a traffic channel, a separate dedicated control channel, and a dedicated control channel. Common channels include: broadcast control channel, forward access channel, paging channel, random access channel. These channels are mapped to the corresponding physical channels in different ways, namely dedicated physical channels and common physical channels. The common physical channel is further divided into a downlink common physical channel and an uplink common physical channel.

 In addition, WCDMA systems work in two ways, including Frequency Division Duplex (FDD) and Time Division Duplex (TDD).

 The uplink common physical channel of the WCDMA system in the FDD mode is a Physical Random Access Channel (PRACH). The user equipment (UE, User Equipment) randomly accesses the WCDMA system through the PRACH channel, and communicates with the base station (NodeB) to obtain the service provided by the WCDMA system.

 On the PRACH channel, the random access procedure performed between the user equipment and the NodeB is implemented by a slotted random access method with a fast access indication. It consists of a preamble (Preamble) and a message (Message). The leader sequence is generated by a signature sequence. The signature sequence consists of 16 complex symbols (1+j or -1-j, where j is an imaginary unit). There are 16 different signature sequences for WCDMA. Theoretically, each PRACH channel allows 16 users to access each access time slot, while different PRACH channels are differentiated by spreading codes.

In the random access procedure, the user sends the preamble sequence as an access request through the uplink PRACH channel, and the NodeB determines whether to allow access according to the preamble sequence detected on the PRACH channel, and the downlink acquisition indicator channel (AICH, Acquisition) Send Channel Get the indicator (AI, Acquisition Indicator) information to the user. The AI information may be an acknowledgment information (ACK) or a non-acknowledgement message (NACK), respectively indicating whether the NodeB allows the user to continue to transmit the message signal.

 If the UE does not receive the AI information from the NodeB, it needs to reselect the signature sequence, which may result in the use of different signature sequences in a complete random access procedure. Summary of the invention

 The embodiment of the invention provides a random access method and user equipment, which can ensure that the same signature sequence is always used in the random access process.

 In a first aspect, a method for random access is provided, including: determining a set of available signature sequences; selecting a first signature sequence from the set of available signature sequences, and outputting the first signature sequence to a physical layer logic module; The layer logic module performs signature sequence selection based on the first signature sequence, generates a preamble sequence according to the result of the signature sequence selection, and sends the preamble sequence to the base station.

 In conjunction with the first aspect, in a first implementation of the first aspect, the performing is performed from a sequence of available signatures.

 With reference to the first aspect and the foregoing implementation manner, in a second implementation manner of the first aspect, the process of selecting the first signature sequence from the set of available signature sequences is performed by the software module of layer 1 in the physical layer logic module. Executed before access.

 With reference to the first aspect and the foregoing implementation manner, in a third implementation manner of the first aspect, the selecting the first signature sequence from the set of available signature sequences comprises: randomly selecting the first signature sequence from the set of available signature sequences .

 With reference to the first aspect and the foregoing implementation manner, in a fourth implementation manner of the first aspect, the method further includes: if the acquisition indicator information corresponding to the preamble sequence is not received from the base station, the physical layer logic module is repeatedly executed. A process of performing signature sequence selection based on the first signature sequence, generating a preamble sequence based on the result of the signature sequence selection, and transmitting the preamble sequence to the base station.

A second aspect provides a user equipment, including: a determining module, configured to determine a set of available signature sequences; a selecting module, configured to select a first signature sequence from a set of available signature sequences determined by the determining module, and to obtain a first signature The sequence is output to the physical layer logic module, and the physical layer logic module is configured to receive the first signature sequence from the selection module, perform signature sequence selection based on the first signature sequence, generate a preamble according to the result of the signature sequence selection, and send the preamble sequence to the base station. In conjunction with the second aspect, in a first implementation of the second aspect, the selection module is a module of layer 2 or layer 3.

 With reference to the second aspect and the foregoing implementation manner, in the second implementation manner of the second aspect, the selection module is a layer 1 software module.

 In conjunction with the second aspect and the above-described implementations, in a third implementation of the second aspect, the selection module can randomly select the first signature sequence from the set of available signature sequences.

 With reference to the second aspect and the foregoing implementation manner, in a fourth implementation manner of the second aspect, the physical layer logic module may be repeatedly executed if the user equipment does not receive the capture indicator information corresponding to the preamble sequence from the base station. A process of performing signature sequence selection based on the first signature sequence, generating a preamble sequence based on the result of the signature sequence selection, and transmitting the preamble sequence to the base station.

 Therefore, the embodiment of the present invention inputs a certain first signature sequence to the physical layer logic module, so that the physical layer logic module always uses the same signature sequence in a complete random access procedure. DRAWINGS

 In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art without departing from the drawings.

 1 is a flow chart of a random access method according to an embodiment of the present invention.

 2 is a block diagram of a user equipment in accordance with an embodiment of the present invention.

 3 is a block diagram of a user equipment according to another embodiment of the present invention.

 4 is a schematic diagram of a random access implementation manner according to an embodiment of the present invention.

 FIG. 5 is a schematic diagram of a random access implementation manner according to another embodiment of the present invention.

 FIG. 6 is a schematic diagram of a random access implementation manner according to another embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention. The technical solution of the present invention can be applied to various communication systems, such as: Global System of Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access ( WCDMA, Wideband Code Division Multiple Access Wireless), General Packet Radio Service (GPRS), Long Term Evolution (LTE), etc.

 A user equipment (UE, User Equipment), which may also be called a mobile terminal (Mobile Terminal), a mobile user equipment, etc., may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network). The user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle, The wireless access network exchanges languages and/or data.

 The base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. The invention is not limited.

 1 is a flow chart of a random access method according to an embodiment of the present invention. The method of Figure 1 is performed by a user equipment.

 101. Determine a set of available signature sequences.

 The embodiment of the present invention does not limit the type and number of signature sequences included in the available set of available signatures. For example, in a WCDMA system, the set of available signature sequences can contain up to 16 signature sequences; in an LTE system, the set of available signature sequences can contain up to 64 signature sequences.

 The set of available signature sequences is generally configured by the network side to the user equipment. For example, the base station can notify the user equipment by means of broadcast, etc., and the user equipment obtains the set of available signature sequences by parsing the information carried by the broadcast. However, the embodiment of the present invention does not limit this.

 102. Select a first signature sequence from the set of available signature sequences, and output the first signature sequence to the physical layer logic module.

 As understood by those skilled in the art, the Physical Layer Logic (PHY Logic) module is a hardware module in Layer 1 (L1; Layer 1). Layer 1 also includes a physical layer software module.

 103. The physical layer logic module performs signature sequence selection based on the first signature sequence, generates a preamble sequence according to the result of the signature sequence selection, and sends a preamble sequence to the base station.

The physical layer logic module can perform random access according to the prior art, including signature sequence selection. The process of selecting, generating a preamble sequence and transmitting a preamble sequence. For example, the physical layer logic module can randomly select the signature sequence, and the random function used can make the probability of each selection equal. The physical layer logic module may also determine an uplink access slot and a preamble transmission power, and generate according to the determined uplink access slot, the result of the signature sequence selection, and the preamble transmission power. And send the preamble sequence.

 Since the first signature sequence has been selected in step 102, the result of the physical layer logic module performing the signature sequence selection in step 103 is still the first signature sequence.

 Therefore, the embodiment of the present invention inputs a certain first signature sequence to the physical layer logic module, so that the physical layer logic module always uses the same signature sequence in a complete random access procedure.

 The so-called complete random access procedure refers to a process of successfully transmitting a preamble sequence to a base station and receiving corresponding AI information from the base station. The corresponding AI information can be positive AI (AI = 1) or negative AI (AI = -1).

 Optionally, as an embodiment, if the AI information corresponding to the preamble sequence sent in step 103 is not received from the base station, the process of step 103 is repeatedly performed, for example, until the corresponding AI information is received from the base station or the random access fails. .

 On the other hand, when the random access needs to be initiated again for another reason, the method of Fig. 1 can be re-executed, and the first signature sequence is selected again in step 102. The first signature sequence selected again may be the same as or different from the previous signature sequence selected in the previous embodiment of the present invention. However, the embodiment of the present invention is not limited thereto, and the embodiment of the present invention may perform only the process of step 103 in the subsequent random access process, and no longer perform steps 101 and 102.

 Alternatively, as an embodiment, step 102 of FIG. 1 may be performed by layer 2 (L2; Layer 2) or layer 3 (L3; Layer 3) after receiving a set of available signature sequences. Layer 2 and Layer 3 are generally implemented by software modules, and layer 2 includes related functional modules for implementing RLC (Radio Link Control) and MAC (Media Access Control), and layer 3 includes implementing RRC. Related function modules such as (Radio Resource Control). The functional module responsible for air interface signaling processing in layer 2 or layer 3 selects a signature sequence from the set of available signature sequences as the first signature sequence output to the physical layer logic module. This method only needs to improve the software module of layer 2 or layer 3, which is relatively easy to implement.

Alternatively, as another embodiment, step 102 of FIG. 1 may be performed by a software module of layer 1 (also referred to as a physical layer software module) before the physical layer logic module performs random access. This way only The first signature sequence is selected before the random access needs to be initiated, and the implementation is more flexible. Optionally, step 102 is implemented by a physical layer software module, so that only the software module of layer 1 is improved, which is relatively easy to implement.

 Optionally, as another embodiment, in step 102 of FIG. 1, the first signature sequence may be randomly selected from the set of available signature sequences. For example, the random selection of step 102 can be performed in the same manner as the physical layer logic module performs the signature sequence selection such that each signature sequence has an equal probability. This can avoid conflicts with the random access process of other user equipments and improve communication efficiency.

 2 is a block diagram of a user equipment in accordance with an embodiment of the present invention. The user equipment 20 of FIG. 2 includes a determination module 21, a selection module 22, and a physical layer logic module 23.

 The determination module 21 determines the set of available signature sequences. The selection module 22 selects the first signature sequence from the set of available signature sequences determined by the determination module 21 and outputs the first signature sequence to the physical layer logic module. The physical layer logic module 23 receives the first signature sequence from the selection module 22, performs signature sequence selection based on the first signature sequence, generates a preamble based on the result of the signature sequence selection, and transmits a preamble sequence to the base station.

 Therefore, the embodiment of the present invention inputs a certain first signature sequence to the physical layer logic module, so that the physical layer logic module always uses the same signature sequence in a complete random access procedure.

 User equipment 20 may implement the various steps of the method of Figure 1, and to avoid repetition, it will not be described in detail.

 Optionally, as an embodiment, if the user equipment does not receive the AI information corresponding to the preamble sequence from the base station, the physical layer logic module 23 may repeatedly perform the result of performing the signature sequence selection based on the first signature sequence and selecting according to the signature sequence. The process of generating a preamble sequence and transmitting a preamble sequence to the base station, for example, until the user equipment receives the corresponding AI information from the base station or the random access fails.

 Alternatively, as an embodiment, the selection module 22 may be a module of layer 2 or layer 3. In this case, the selection module 22 may select the first signature sequence after the receiving module 21 receives the available signature sequence. Layer 2 and Layer 3 are generally implemented by software modules. This method only needs to improve the software module of layer 2 or layer 3, which is relatively easy to implement.

Optionally, as another embodiment, the selection module 22 may be a software module of layer 1. This method only selects the first signature sequence before the random access needs to be initiated, and the implementation manner is more flexible. In addition, this method only needs to improve the software module of layer 1, which is relatively easy to implement. Optionally, as another embodiment, the selection module 22 may randomly select the first signature sequence from the set of available signature sequences. For example, selection module 22 may perform random selection in the same manner as physical layer logic module 23 performs signature sequence selection such that each signature sequence has an equal probability. In this way, collisions with random access procedures of other user equipments can be avoided as much as possible, and communication efficiency is improved.

 3 is a block diagram of a user equipment according to another embodiment of the present invention. The user equipment 30 of FIG. 3 includes a processor 31, a memory 32, and a physical layer logic module 33.

 The memory 32 stores instructions that cause the processor 31 to: determine a set of available signature sequences; select a first signature sequence from the set of available signature sequences, and output the first signature sequence to the physical layer logic module 33.

 The physical layer logic module 23 receives the first signature sequence, performs signature sequence selection based on the first signature sequence, generates a preamble according to the result of the signature sequence selection, and sends a preamble sequence to the base station.

 Therefore, the embodiment of the present invention inputs a certain first signature sequence to the physical layer logic module, so that the physical layer logic module always uses the same signature sequence in a complete random access procedure.

 The processor 31, the memory 32, and the physical layer logic module 33 can be integrated into one processing chip. Alternatively, as shown in FIG. 3, the processor 31, the memory 32, and the physical layer logic module 33 are connected by a bus system 39.

 Further, the user equipment 30 may further include a transmitting circuit 34, a receiving circuit 35, an antenna 36, and the like. The processor 31 can also control the operation of the user equipment 30, which can also be referred to as a CPU (Central Processing Unit). Memory 32 can include read only memory and random access memory and provides instructions and data to processor 31. A portion of the memory 32 may also include a non-volatile random access memory. In a particular application, transmit circuitry 34 and receive circuitry 35 can be coupled to antenna 36. The various components of the user equipment 30 are coupled together by a bus system 69, which may include, in addition to the data bus, a power bus, a control bus, a status signal bus, and the like. However, for clarity of description, various buses are labeled as bus system 69 in the figure.

 The receiving circuit 53 can acquire a broadcast message from the base station via the antenna 55, so that the processor 31 extracts a set of available signature sequences from the broadcast message. In addition, after the physical layer logic module 33 generates the preamble sequence, the preamble sequence can be transmitted to the base station through the transmitting circuit 54 and the antenna 55.

 The method disclosed in the foregoing embodiment of the present invention may be applied to the processor 31 or by the processor.

31 achieved. Processor 31 may be an integrated circuit chip with signal processing capabilities. In reality In the present process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 31 or an instruction in a form of software. The processor 31 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware. Component. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 32, and the processor 31 reads the information in the memory 32 and combines the hardware to perform the steps of the above method.

 In the present embodiment, it is only necessary to add an instruction or a software module for selecting an operation of the first signature sequence in the memory 32, and thus it is easy to implement.

 Optionally, as an embodiment, the processor 31 may randomly select the first signature sequence from the set of available signature sequences. For example, processor 31 may perform random selection in the same manner as physical layer logic module 33 performs signature sequence selection such that each signature sequence has an equal probability. In this way, it is possible to avoid conflicts with the random access process of other user equipments and improve communication efficiency.

 4 is a schematic diagram of a random access implementation manner according to an embodiment of the present invention. In the embodiment of Figure 4, the selection of the first signature sequence is implemented by the L1 layer.

 As shown in FIG. 4, the user equipment 40 includes an RRC (Layer 3) module 41, and an RLC/MAC (layer).

2) Module 42, PHY (Layer 1) software module 43 and PHY Logic Module 44. For example, the above-described modules 41-43 can be implemented by corresponding instructions stored in the memory 32 shown in Fig. 3 and executed by the processor 31. The PHY logic module 44 can be implemented by separate hardware circuitry and can be implemented in accordance with prior art implementations and therefore will not be described in detail.

 The PHY software module 43 receives the set of available signature sequences S from a higher layer (such as the RRC module 41 or the RLC/MAC module 42), assuming that the set of available signature sequences S contains 16 available signature sequences s0-sl5, but the embodiment of the present invention does not Limited to this specific number. When a random access needs to be initiated, the PHY software module 43 initiates a transmit operation and randomly selects a signature sequence from the set of available signature sequences S, assuming s8. The PHY software module 43 outputs the selected signature sequence s8 to the PHY hardware module 44.

The PHY hardware module 44 treats the signature sequence s8 as an input in accordance with the procedures of the prior art specification. A set of available signature sequences S, and based on the set of available signature sequences S, a signature sequence is randomly selected for generating a preamble sequence. Since the set of signature sequences S is available, only the signature sequence s8 is actually included, so the PHY hardware module 44 can only select the signature sequence s8 to generate the preamble sequence. Even in a subsequent process, such as because no positive AI or negative AI is detected, the signature sequence needs to be reselected, and the PHY hardware module 44 still selects the signature sequence s8 without using other signature sequences.

 In this way, it is guaranteed that a unique signature sequence will always be used during a complete random access procedure.

 This embodiment does not need to modify the RRC module 41, the RLC/MAC module 42 and the PHY logic module 44, and only needs to add a function for selecting the first signature sequence in the PHY software module 43, which is relatively easy to implement.

 FIG. 5 is a schematic diagram of a random access implementation manner according to another embodiment of the present invention. In the embodiment of Figure 5, the selection of the first signature sequence is implemented by the L2 layer.

 As shown in FIG. 5, the user equipment 50 includes an RRC (Layer 3) module 51, an RLC/MAC (Layer 2) module 52, a PHY (Layer 1) software module 53, and a PHY logic module 54. For example, the above-described modules 51-53 can be implemented by corresponding instructions stored in the memory 32 shown in FIG. 3 and executed by the processor 31. The PHY logic module 54 can be implemented by separate hardware circuits and can be referred to in the prior art implementations and therefore will not be described in detail.

 The RLC/MAC module 52 determines the set of available signature sequences S, for example, the set of available signature sequences S can be received from the RRC module 51. It is assumed that the set of available signature sequences S contains 16 available signature sequences s0-sl5, but embodiments of the invention are not limited to this particular number. When a random access needs to be initiated, the RLC/MAC module 52 randomly selects a signature sequence from the set of available signature sequences S, assuming s8. The RLC/MAC module 52 outputs the selected signature sequence s8 to the PHY hardware module 54.

 In accordance with the procedures of the prior art specification, the PHY hardware module 54 treats the signature sequence s8 as an input set of available signature sequences S, and based on the set of available signature sequences S, randomly selects a signature sequence for generating a preamble sequence. Since the set of signature sequences S is available, only the signature sequence s8 is actually included, so the PHY hardware module 54 can only select the signature sequence s8 to generate the preamble sequence. Even in the subsequent process, for example, because the positive AI or negative AI is not detected, the signature sequence needs to be reselected, and the PHY hardware module 54 still selects the signature sequence s8 without using other signature sequences.

 In this way, it is guaranteed that a unique signature sequence will always be used during a complete random access procedure.

This embodiment does not require the RRC module 51, the PHY software module 53, and the PHY logic module 54. To make the transformation, it is relatively easy to implement the function of selecting the first signature sequence in the RLC/MAC module 52.

 FIG. 6 is a schematic diagram of a random access implementation manner according to another embodiment of the present invention. In the embodiment of Figure 6, the selection of the first signature sequence is implemented by the L3 layer.

 As shown in FIG. 6, the user equipment 60 includes an RRC (Layer 3) module 61, and an RLC/MAC (layer).

2) Module 62, PHY (Layer 1) software module 63 and PHY Logic Module 64. For example, the above-described modules 61-63 can be implemented by corresponding instructions stored in the memory 32 shown in Fig. 3 and executed by the processor 31. The PHY logic module 64 can be implemented by separate hardware circuits and can be referred to in the prior art implementations and therefore will not be described in detail.

 The RRC module 61 determines the set of available signature sequences S, for example, by parsing the broadcast message sent by the base station to obtain the set of available signature sequences S. It is assumed that the set of available signature sequences S contains 16 available signature sequences s0-sl5, but embodiments of the invention are not limited to this particular number. When it is required to initiate random access, the RRC module 61 randomly selects a signature sequence from the set of available signature sequences S, assuming s8. The RRC module 61 outputs the selected signature sequence s8 to the PHY hardware module 64.

 In accordance with the procedures of the prior art specification, the PHY hardware module 64 treats the signature sequence s8 as an input set of available signature sequences S, and based on the set of available signature sequences S, randomly selects a signature sequence for generating a preamble sequence. Since the set of signature sequences S is available, only the signature sequence s8 is actually included, so the PHY hardware module 64 can only select the signature sequence s8 to generate the preamble sequence. Even in the subsequent process, for example, because the positive AI or negative AI is not detected, the signature sequence needs to be reselected, and the PHY hardware module 64 still selects the signature sequence s8 without using other signature sequences.

 In this way, it is guaranteed that a unique signature sequence will always be used during a complete random access procedure.

 This embodiment does not need to modify the RLC/MAC module 62, the PHY software module 63, and the PHY logic module 64, and only needs to add a function for selecting the first signature sequence in the RRC module 61, which is relatively easy to implement.

 Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in a combination of electronic hardware or computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

It will be clearly understood by those skilled in the art that for the convenience of description and cleaning, the above description For a specific working process of the system, the device, and the unit, reference may be made to the corresponding process in the foregoing method embodiment, and details are not described herein again.

 In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

 The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

 In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

 The functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

 The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request 1. A random access method, characterized by including: Determine the set of available signature sequences; Select a first signature sequence from the set of available signature sequences, and output the first signature sequence to the physical layer logic module; The physical layer logic module performs signature sequence selection based on the first signature sequence, generates a preamble sequence according to the result of signature sequence selection, and sends the preamble sequence to the base station. 2. The method according to claim 1, characterized in that the step is executed after the available signature sequence. 3. The method of claim 1, wherein the process of selecting the first signature sequence from the set of available signature sequences is performed by a software module of layer 1 before the physical layer logic module performs random access. implement. 4. The method according to any one of claims 1 to 3, characterized in that: selecting the first signature sequence from the set of available signature sequences includes: The first signature sequence is randomly selected from the set of available signature sequences. 5. The method according to any one of claims 1 to 4, further comprising: if acquisition indicator information corresponding to the preamble sequence is not received from the base station, repeatedly executing the physical layer The logic module performs a process of selecting a signature sequence based on the first signature sequence, generating a preamble sequence according to a result of the signature sequence selection, and sending the preamble sequence to the base station. 6. A user equipment, characterized by: including: Determination module, used to determine the set of available signature sequences; A selection module, configured to select a first signature sequence from the set of available signature sequences determined by the determination module, and output the first signature sequence to the physical layer logic module; A physical layer logic module, configured to receive the first signature sequence from the selection module, perform signature sequence selection based on the first signature sequence, generate a preamble based on the result of signature sequence selection, and send the preamble sequence to the base station. . 7. The user equipment according to claim 6, characterized in that the selection module is a layer 2 or layer 3 module. 8. The user equipment according to claim 6, wherein the selection module is a layer 1 software module. 9. The user equipment according to any one of claims 6-8, characterized in that the selection module is specifically configured to randomly select the first signature sequence from the set of available signature sequences. 10. The user equipment according to any one of claims 6 to 9, characterized in that the physical layer logic module is specifically configured to operate when the user equipment does not receive the acquisition corresponding to the preamble sequence from the base station. In the case of indicator information, the process of performing signature sequence selection based on the first signature sequence, generating a preamble sequence based on the result of signature sequence selection, and sending the preamble sequence to the base station is repeatedly performed.