Random access method, device, user equipment, network equipment and medium

Abstract

A random access method, apparatus, user equipment, base station and medium. The method comprises: sending a random access request; receiving scheduling information of a random access response about the random access request; receiving a random access response based on the scheduling information of the random access response; wherein, through the random access request, indicating the time required for switching from the state of sending the random access request to the state of receiving the random access response, so as to adjust the sending time of the scheduling information of the random access response. Applying the above scheme, the reliability of the user equipment receiving the random access response can be improved.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a random access method, device, user equipment, network equipment and medium. Background Art

[0002] In the 3rd Generation Partnership Project (3GPP) protocol, User Equipment (UE) is divided into lightweight UE (RedCap UE) and non-lightweight UE (non-RedCap UE). Non-RedCap UE includes enhanced mobile broadband (eMBB) UE and ultra-reliable low latency communication (URLLC) UE.

[0003] In the wireless communication system, the RedCap UE first sends a random access request including a random access preamble to the base station on the uplink partial carrier bandwidth (BWP). After receiving the random access preamble, the base station sends a corresponding random access response to the UE on the downlink BWP. Finally, the RedCap UE can access the cell.

[0004] However, in a wireless communication system, the UE sends a random access request on the initial uplink BWP and receives a random access response on the initial downlink BWP. Since the maximum bandwidth supported by non-RedCap UE is 100MHz and the maximum bandwidth that can be configured for the initial uplink BWP is 100MHz, the initial uplink BWP is likely to exceed the maximum bandwidth of 20MHz supported by the RedCap UE itself. At this time, under time division duplexing (TDD), the center frequency of the initial uplink BWP is the same as that of the initial downlink BWP. When the frequency interval between the center frequency of the RO and the initial downlink BWP exceeds 10M, the center frequency of the UE transmitting Msg1 and receiving Msg2 will change, and the user equipment needs to perform radio frequency (RF) retuning to adjust the current center frequency to the center frequency corresponding to the reception of the random access response, and then receive the scheduling information of the random access response and the random access response.

[0005] To improve the reliability of random access responses, the network may configure a dedicated initial uplink BWP for RedCap UEs.

[0006] However, when the network does not configure a dedicated initial uplink BWP for the RedCap UE, the reliability of the user equipment receiving the random access response may be affected, resulting in an increase in the random access failure rate. Summary of the invention

[0007] The problem to be solved by the present invention is: how to improve the reliability of user equipment receiving a random access response.

[0008] To solve the above problem, an embodiment of the present invention provides a random access method, the method comprising:

[0009] Sending a random access request;

[0010] receiving scheduling information of a random access response regarding the random access request;

[0011] receiving the random access response based on the scheduling information of the random access response;

[0012] The random access request indicates the time required to switch from the state of sending the random access request to the state of receiving the random access response, so as to adjust the sending time of the scheduling information of the random access response.

[0013] Optionally, the indicating, through the random access request, a time capability required to switch from a state of sending the random access request to a state of receiving the random access response includes:

[0014] The random access preamble used in the random access request indicates the time required for switching from the state of sending the random access request to the state of receiving the random access response.

[0015] Optionally, the indicating, through the random access request, a time capability required to switch from a state of sending the random access request to a state of receiving the random access response includes:

[0016] The time-frequency resource used by the random access request indicates the time length required for switching from the state of sending the random access request to the state of receiving the random access response.

[0017] The embodiment of the present invention further provides another random access method, the method comprising:

[0018] receiving a random access request;

[0019] generating and sending scheduling information of a random access response to the random access request based on the random access request;

[0020] Sending the random access response based on the scheduling information of the random access response;

[0021] Wherein, based on the random access request, the time required for switching from the state of sending the random access request to the state of receiving the random access response is determined, and the sending time of the scheduling information of the random access response is adjusted.

[0022] Optionally, the adjusting a sending time of scheduling information of the random access response includes:

[0023] According to the time duration capability required for transitioning from the state of sending the random access request to the state of receiving the random access response, after a preset time duration, sending the scheduling information of the random access response, where the preset time duration is greater than or equal to the time duration required for transitioning from the state of sending the random access request to the state of receiving the random access response.

[0024] An embodiment of the present invention further provides a random access device, the device comprising:

[0025] A first sending unit, configured to send a random access request;

[0026] A first receiving unit, configured to receive scheduling information of a random access response to the random access request;

[0027] used for a second receiving unit, configured to receive the random access response based on the scheduling information of the random access response;

[0028] The random access device indicates, through the random access request, the time length capability required for the random access device to switch from the state of sending the random access request to the state of receiving the random access response.

[0029] An embodiment of the present invention further provides a user equipment, wherein a receiving link and a transmitting link of the user equipment respectively use independent phase-locked loops.

[0030] Optionally, the sending link of the user equipment includes:

[0031] A first mixer;

[0032] a digital-to-analog converter connected to the first input terminal of the first mixer;

[0033] A first phase-locked loop connected to a second input terminal of the first mixer;

[0034] A power amplifier is connected to the output end of the first mixer.

[0035] Optionally, the receiving link of the user equipment includes:

[0036] a second mixer;

[0037] a low noise amplifier connected to the first input terminal of the second mixer;

[0038] A second phase-locked loop is connected to a second input terminal of the second mixer

[0039] The analog-to-digital converter is connected to the output end of the second mixer.

[0040] Optionally, the user equipment includes the above-mentioned random access device.

[0041] An embodiment of the present invention further provides a random access device, the device comprising:

[0042] A third receiving unit, configured to receive a random access request;

[0043] A second sending unit, configured to generate and send scheduling information of a random access response to the random access request based on the random access request;

[0044] A third sending unit, configured to send the random access response based on the scheduling information of the random access response;

[0045] The random access device determines the time required to switch from the state of sending the random access request to the state of receiving the random access response based on the random access request, and adjusts the sending time of the scheduling information of the random access response.

[0046] An embodiment of the present invention further provides a network device, which includes the above-mentioned random access device.

[0047] An embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. The computer program is executed by a processor to implement the steps of any of the above methods.

[0048] An embodiment of the present invention further provides another device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of any one of the above methods when running the computer program.

[0049] An embodiment of the present invention further provides a device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of any of the above methods when running the computer program.

[0050] Compared with the prior art, the technical solution of the embodiment of the present invention has the following advantages:

[0051] By applying the solution of the present invention, the network device can be indicated through the random access request for the time required to switch from the state of sending the random access request to the state of receiving the random access response, so that the network device adjusts the sending time of the scheduling information of the random access response based on the capability of the user equipment, thereby ensuring that the user equipment can receive the random access response and the corresponding scheduling information regardless of whether the timing requirement of performing radio frequency modulation from sending the random access request to receiving the random access response is met, thereby improving the reliability of the user equipment receiving Msg2, and thus improving the success rate of random access. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the architecture of a communication system;

[0053] Figure 2 A flowchart of a random access method in an embodiment of the present invention;

[0054] Figure 3 is a structural diagram of a user equipment according to an embodiment of the present invention;

[0055] Figure 4 is a schematic diagram of the structure of another user equipment in an embodiment of the present invention;

[0056] Figure 5 is a flow chart of another random access method in an embodiment of the present invention;

[0057] Figure 6 A schematic diagram of signaling interaction between a user equipment and a base station in a random access process according to an embodiment of the present invention;

[0058] Figure 7 It is a structural schematic diagram of a random access device in an embodiment of the present invention. DETAILED DESCRIPTION

[0059] Figure 1 A possible communication system applicable to the random access method provided in an embodiment of the present invention is shown, and the architecture of the communication system includes: a base station and multiple user equipments (user equipment 1, user equipment 2, user equipment 3 and user equipment 4 as shown in the figure). Among them:

[0060] The base station is used to provide wireless access services to user equipment in the cell controlled by the base station. Figure 1 As shown, the base station controls cell 1 and cell 2, which are respectively the user equipment in cell 1 (such as Figure 1 1 and 2) in the cell and the user equipment in the cell 2 (such as Figure 1 Provide wireless access services to user equipment 3 and user equipment 4).

[0061] The multiple user equipments are used to access the base station to which the cell belongs to perform data services. Figure 1 In the figure, user equipment 1 and user equipment 2 are both within the coverage of cell 1 controlled by the base station, and both access the base station for data services; user equipment 3 and user equipment 4 are both within the coverage of cell 2 controlled by the base station, and both access the base station for data services.

[0062] Specifically, the multiple user equipments need to establish connections with the base station through a random access process, so that the multiple user equipments can access the base station to perform data services.

[0063] It should be noted that Figure 1 The communication system shown is only an example and is not limited to including Figure 1 The communication system may also include multiple base stations and other devices, which are not listed here in detail.

[0064] During the random access process, the UE sends a random access request on the initial uplink BWP and receives a random access response on the initial downlink BWP. Since the maximum bandwidth supported by non-RedCap UE is 100MHz and the maximum bandwidth that can be configured for the initial uplink BWP is 100MHz, the initial uplink BWP is likely to exceed the maximum bandwidth of 20MHz supported by the RedCap UE itself. At this time, under TDD, the center frequency of the initial uplink BWP is the same as that of the initial downlink BWP. When the frequency interval between the center frequency of the RO and the initial downlink BWP exceeds 10M, the center frequency of the UE transmitting Msg1 and receiving Msg2 will change, and the user equipment needs to perform radio frequency (RF) retuning to adjust the current center frequency to the center frequency corresponding to the reception of the random access response Msg2, and then receive the scheduling information of the random access response Msg2 and the random access response Msg2.

[0065] To improve the reliability of random access responses, the network may configure a dedicated initial uplink BWP for RedCap UEs.

[0066] However, when a dedicated initial uplink BWP is not configured for RedCap UE, according to 3GPP analysis results, when the center frequency changes, the RF needs at least 50us to 200us conversion time. When the subcarrier spacing (SCS) SCS = 15KHz, the length of a symbol is 71us, and when SCS = 30KHz, the length of a symbol is 35.7us. Therefore, one symbol is usually not enough for the UE to complete the conversion from the transmit (Tx) frequency to the receive (Rx) frequency.

[0067] When the UE does not switch from the transmitting frequency to the receiving frequency, if the base station sends the scheduling information of the random access response or the random access response to the UE, the user equipment cannot receive the random access response, and naturally cannot complete the current random access process, resulting in an increase in the random access failure rate.

[0068] In view of the above problems, an embodiment of the present invention provides a random access method. By applying the method, a user equipment is indicated, through a random access request, to have the time required for switching from the state of sending the random access request to the state of receiving the random access response. This ensures that the user equipment can receive the random access response and corresponding scheduling information, thereby improving the reliability of the user equipment receiving Msg2, and thus improving the success rate of random access.

[0069] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0070] Figure 2 A schematic diagram of signaling interaction between a user equipment and a network device during a random access process is provided for an embodiment of the present invention.

[0071] Reference Figure 2 , an embodiment of the present invention provides a random access method, the method may include the following steps:

[0072] Step 11: Send a random access request.

[0073] In an embodiment of the present invention, a random access request (Random Access Preamble), namely Msg1. Through the random access request, the UE can indicate to the network device the time capability required to switch from the state of sending the random access request to the state of receiving the random access response, so as to adjust the sending time of the scheduling information of the random access response. For the convenience of description, in an embodiment of the present invention, the time capability required to switch from the state of sending the random access request to the state of receiving the random access response is referred to as the radio frequency conversion capability.

[0074] In an embodiment of the present invention, the random access method is a contention-based random access. Before sending a random access request, the UE may obtain random access configuration information broadcast by the base station, wherein the random access configuration information includes a preamble sequence and / or time-frequency resources (RACHOccasion) that can be used by user equipments with different radio frequency conversion capabilities to send random access requests.

[0075] The user equipment may randomly select a preamble sequence from the multiple preamble sequences to generate a random access preamble code, and send the random access preamble code to the base station through corresponding time-frequency resources to notify the base station of a random access request.

[0076] It should be noted that, in the embodiment of the present invention, there is no limitation on the manner in which the preamble sequence or time-frequency resources may be used to indicate the RF conversion capability. For example, different RF conversion capabilities correspond to different preamble sequences, or different RF conversion capabilities correspond to different time-frequency resources.

[0077] In addition, in the embodiment of the present invention, the RF switching capability can be understood as: RF switching (RF tunning) time from Tx to Rx, or user equipment type (such as different RedCap UE types), etc.

[0078] Step 12: Receive scheduling information of a random access response related to the random access request and the random access response.

[0079] In a specific implementation, the UE first receives scheduling information of a random access response, wherein the scheduling information includes time-frequency resources for receiving the random access response. After receiving the scheduling information, the UE receives the random access response on the time-frequency resources indicated by the scheduling information.

[0080] After detecting the preamble sequence, the network device sends the scheduling information of the random access response to the UE, and then the network device returns a random access response (Random Access Response), i.e., Msg2, to the UE. The random access response includes the identifier of the preamble sequence and the uplink resources allocated for the UE to send the radio resource control connection request Msg3.

[0081] In a specific implementation, the UE may indicate, through the random access request, the time length capability required for the user equipment to switch from the state of sending the random access request to the state of receiving the random access response. The UE may currently meet the timing requirements for performing radio frequency modulation between sending the random access request Msg1 and receiving the random access response Msg2, that is, the UE can complete the conversion from the transmitting frequency to the receiving frequency within one orthogonal frequency division multiplexing (OFDM) symbol. The UE may also not meet the timing requirements for performing radio frequency modulation between sending the random access request Msg1 and receiving the random access response Msg2 currently defined by the protocol, that is, the UE cannot currently complete the conversion from the transmitting frequency to the receiving frequency within one OFDM symbol.

[0082] In a specific implementation, the random access request may be used in a variety of ways to indicate whether the UE currently meets the timing requirement for performing radio frequency modulation between sending the random access request and receiving the random access response, which is not limited here.

[0083] In an embodiment of the present invention, the UE may indicate the time length capability required for the user equipment to switch from the state of sending the random access request to the state of receiving the random access response through the random access preamble code used in the random access request.

[0084] In a specific implementation, the type of the random access preamble consists of two parts: a cyclic prefix (CP) and a preamble sequence. The type of the random access preamble can be divided into a long preamble type and a short preamble type. Among them, the preamble sequence length in the long preamble type is 839 bits, and the preamble sequence length in the short preamble type is 139 bits. The types of different random access preambles are set in a one-to-one correspondence with the capabilities of the user equipment, without the need to use additional bits in the random access request for indication, which can effectively save transmission resources and be more compatible with existing protocols.

[0085] For example, when the type of the random access preamble is set to a long preamble type, it means that the time required for the UE to switch from the state of sending the random access request to the state of receiving the random access response is shorter, that is, the UE can complete the switch from the sending frequency to the receiving frequency within 1 OFDM symbol. When the type of the random access preamble is set to a short preamble type, it means that the time required for the UE to switch from the state of sending the random access request to the state of receiving the random access response is longer, that is, the UE cannot complete the switch from the sending frequency to the receiving frequency within 1 OFDM symbol. After receiving the random access request Msg1, the base station can determine the capability of the UE based on the type of the random access preamble therein, thereby adjusting the sending time of the random access response Msg2.

[0086] In a specific implementation, different preamble sequences of the same type may also be used to indicate the time required for the user equipment to switch from the state of sending the random access request to the state of receiving the random access response, which is not limited here.

[0087] In another embodiment of the present invention, the UE may indicate the time length capability required for the user equipment to switch from the state of sending the random access request to the state of receiving the random access response through the time-frequency resource (Random Access Channel Occasion, RO) used by the random access request.

[0088] Among them, the time-frequency resources corresponding to the time length capability required for the user equipment to switch from the state of sending the random access request to the state of receiving the random access response may be broadcast by the base station through a broadcast message, or may be pre-agreed in the protocol, without specific limitation. The base station can determine the capability of the UE based on the time-frequency resources used by the random access request, thereby adjusting the sending time of the random access response Msg2.

[0089] Step 13: Send a radio resource control connection request.

[0090] Radio resource control connection request (Scheduled Transmission), namely Msg3.

[0091] After receiving the random access response Msg2, when the UE confirms that the identifier of the preamble sequence is the same as the index value of the preamble sequence sent by itself, it will send a radio resource control connection request Msg3 including the identifier of the UE to the base station.

[0092] Step 14: Receive radio resource control establishment.

[0093] Radio resource control establishment (Contention Resolution) is Msg4.

[0094] After receiving the radio resource control connection request Msg3, the base station determines that the UE device has successfully competed, and returns Msg4 including the identifier of the UE to the UE to notify the UE that random access is successful.

[0095] It should be noted that, in a specific implementation, the base station sends the radio resource control establishment Msg4 to the UE, first sends the scheduling information about the radio resource control establishment Msg4 to the UE, and then sends the radio resource control establishment Msg4.

[0096] In a specific implementation, the UE may determine whether it can currently meet the timing requirement of performing radio frequency modulation between sending the random access request and receiving the random access response based on the specific structure of the current sending link and the receiving link.

[0097] Figure 3 FIG. 1 is a schematic diagram of the structure of a user device. Figure 3 , under TDD, the UE's transmission link 21 and the UE's reception link 22 share the same phase-locked loop PLL. Specifically, the UE's transmission link 21 may include: a first mixer 211, a digital-to-analog converter DAC, a phase-locked loop PLL and a power amplifier PA. The digital-to-analog converter DAC is connected to a first input end of the first mixer 211. The phase-locked loop PLL is connected to a second input end of the first mixer 211. The power amplifier PA is connected to an output end of the first mixer 211.

[0098] The receiving link 22 of the UE may include: a second mixer 221, a low noise amplifier 222, a phase-locked loop PLL and an analog-to-digital converter ADC. The low noise amplifier 222 is connected to a first input end of the second mixer 221. The phase-locked loop PLL is connected to a second input end of the second mixer 221. The analog-to-digital converter ADC is connected to an output end of the second mixer 221.

[0099] Taking sending random access request Msg1 as an example, random access request Msg1 is converted into an analog signal by digital-to-analog converter DAC and input into first mixer 211. After frequency modulation by phase-locked loop PLL, a mixing result signal of target frequency is generated, which is then amplified by power amplifier PA and output.

[0100] Taking the receiving random access response Msg2 as an example, the receiving random access response Msg2 is amplified by the low noise amplifier 222, and then frequency modulated by the phase-locked loop PLL to generate a mixing result signal of the target frequency, which is then converted by the analog-to-digital converter ADC to obtain a corresponding digital signal.

[0101] Since the receiving link 21 and the sending link 22 share the same phase-locked loop PLL, the UE needs to perform radio frequency modulation after sending the random access request Msg1 in order to receive the random access response Msg2.

[0102] In one embodiment of the present invention, referring to Figure 4 , another user device is provided. Figure 4 As shown, the receiving link and the transmitting link of the user equipment use independent phase-locked loops respectively.

[0103] Specifically, refer to Figure 4The transmission link 31 of the UE may include: a first mixer 311, a digital-to-analog converter DAC, a first phase-locked loop PLL1 and a power amplifier PA. The digital-to-analog converter DAC is connected to a first input end of the first mixer 311. The first phase-locked loop PLL1 is connected to a second input end of the first mixer 311. The power amplifier PA is connected to an output end of the first mixer 311.

[0104] Correspondingly, the receiving link 32 of the UE may include: a second mixer 321, a low noise amplifier 322, a second phase-locked loop PLL2 and an analog-to-digital converter ADC. The low noise amplifier 322 is connected to a first input end of the second mixer 321. The second phase-locked loop PLL2 is connected to a second input end of the second mixer 321. The analog-to-digital converter ADC is connected to an output end of the second mixer 321.

[0105] The random access request Msg1 is converted into an analog signal by the digital-to-analog converter DAC and then input into the first mixer 311. After frequency modulation by the first phase-locked loop PLL1, a mixing result signal of a target frequency is generated, which is then amplified by the power amplifier PA and then output.

[0106] The received random access response Msg2 is amplified by the low noise amplifier 322 and frequency modulated by the second phase-locked loop PLL2 to generate a mixing result signal of the target frequency, which is then converted by the analog-to-digital converter ADC to obtain a corresponding digital signal.

[0107] The receiving link 31 and the transmitting link 32 use different phase-locked loops. During the conversion process from the transmitting frequency to the receiving frequency, there is no need to perform RF frequency modulation after the transmission is completed. The conversion from the transmitting frequency to the receiving frequency can be completed in a dozen us.

[0108] When the UE has Figure 3 The structure shown in FIG. 1 cannot meet the timing requirements of the current 3GPP protocol for performing radio frequency modulation between sending the random access request Msg1 and receiving the random access response Msg2. Figure 3 When the structure shown is used, the timing requirement of performing radio frequency modulation between sending the random access request Msg1 and receiving the random access response Msg2 can be met. According to the capability of the UE and the configuration of the base station, the UE can determine the random access preamble code that can be used in the random access request Msg1, or the time-frequency resources used to send the random access request Msg1.

[0109] The embodiment of the present invention also provides another random access method, referring to Figure 2 , the method may include the following steps:

[0110] Step 41: Receive a random access request.

[0111] Step 42: Based on the random access request, generate and send a random access response regarding the random access request and the random access response.

[0112] In a specific implementation, the network device first sends scheduling information of a random access response to the UE, wherein the scheduling information includes time-frequency resources for receiving the random access response. After sending the scheduling information, the network device sends the random access response on the time-frequency resources indicated by the scheduling information.

[0113] Step 43: Receive a radio resource control connection request.

[0114] Step 44, send radio resource control establishment.

[0115] Regarding steps 41 to 44, specific implementation may refer to the above descriptions of steps 21 to 24, which will not be repeated here.

[0116] Figure 5 Schematic diagram of signaling interaction between UE and base station during random access. Figure 5 For details, please refer to the above Figure 1 , and implement it. Figure 5 In the present invention, a base station gNB of a fifth generation (5th Generation, 5G) system or a new radio (New Radio, NR) is used for illustration. It can be understood that the base station can also be a base station of other communication systems.

[0117] Combination Figure 2 and Figure 5 In an embodiment of the present invention, the base station can determine the time required for the user equipment to switch from the state of sending the random access request to the state of receiving the random access response based on the random access request, and then adjust the scheduling information of the random access response Msg2 and the sending time of Msg2.

[0118] Specifically, after receiving the random access request Msg1, the base station can send the scheduling information of the random access response after a preset time, and the preset time is greater than or equal to the time required for the user equipment to perform radio frequency modulation, that is, the UE should have enough time to complete the radio frequency modulation. At this time, the base station sends the scheduling information and Msg2 of the random access response Msg2, and the UE can receive the random access response Msg2. If the scheduling information or random access response Msg2 of the random access response Msg2 is sent before or during the radio frequency modulation, the UE cannot receive the random access response Msg2.

[0119] From the above content, it can be seen that the random access method in the embodiment of the present invention indicates the UE's ability to switch from the transmitting frequency to the receiving frequency through a random access request, thereby enabling the base station to determine when to send the scheduling information of the random access response Msg2 and the random access response Msg2 according to the UE's radio frequency conversion capability, so that the UE can receive the random access response Msg2 and improve the success rate of random access.

[0120] In order to enable those skilled in the art to better understand and implement the present invention, the user equipment and computer-readable storage medium corresponding to the above method are described in detail below.

[0121] Reference Figure 6 The embodiment of the present invention provides a random access device 60, which may include: a first sending unit 61, a first receiving unit 62 and a second receiving unit 63. Among them:

[0122] The first sending unit 61 is used to send a random access request;

[0123] The first receiving unit 62 is configured to receive scheduling information of a random access response to the random access request;

[0124] The second receiving unit 63 is configured to receive the random access response based on the scheduling information of the random access response;

[0125] The random access device 60 indicates, through the random access request, the time required for the random access device 60 to switch from the state of sending the random access request to the state of receiving the random access response, so as to adjust the sending time of the scheduling information of the random access response.

[0126] The embodiment of the present invention also provides a user equipment, referring to Figure 3 , the receiving link 31 and the sending link 32 of the user equipment respectively use independent phase-locked loops.

[0127] In one embodiment of the present invention, referring to Figure 3 The transmission link 31 of the user equipment may include: a first mixer 311, a digital-to-analog converter DAC, a first phase-locked loop PLL1 and a power amplifier PA. The analog-to-digital converter DAC is connected to a first input end of the first mixer 311. The first phase-locked loop PLL1 is connected to a second input end of the first mixer 311. The power amplifier PA is connected to an output end of the first mixer 311.

[0128] In one embodiment of the present invention, referring to Figure 3, the receiving link 32 of the user equipment may include: a second mixer 321, a low noise amplifier 322, a second phase-locked loop PLL2 and an analog-to-digital converter ADC. The low noise amplifier 322 is connected to a first input end of the second mixer 321. The second phase-locked loop PLL2 is connected to a second input end of the second mixer 321. The analog-to-digital converter ADC is connected to an output end of the second mixer 321.

[0129] In an embodiment of the present invention, the user equipment includes the random access device 60 mentioned above.

[0130] The user equipment in the embodiments of the present invention may refer to an access user equipment, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote user equipment, a mobile device, a wireless communication device, a user agent or a user device. The user equipment may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a user equipment in a future 5G network or a device in a future evolved Public Land Mobile Network (PLMN), etc., which is not limited here.

[0131] Reference Figure 7 The embodiment of the present invention further provides another random access device 70, which may include: a third receiving unit 71, a second sending unit 72 and a third sending unit 73. Among them:

[0132] The third receiving unit 71 is used to receive a random access request;

[0133] The second sending unit 72 is used to generate and send scheduling information of a random access response about the random access request based on the random access request;

[0134] The third sending unit 73 is configured to send the random access response based on the scheduling information of the random access response;

[0135] The random access device 70 determines the time required for the random access device 70 to switch from the state of sending the random access request to the state of receiving the random access response based on the random access request, and adjusts the sending time of the scheduling information of the random access response.

[0136] An embodiment of the present invention further provides a network device, which includes the random access device 70 mentioned above.

[0137] The network device in the embodiment of the present application may be a base station (gNB) of a 5G system or NR, or a next-generation communication system (such as a 6G communication system, etc.), which is not limited here.

[0138] It should be noted that the random access device 60 and the random access device 70 (virtual device) may be a chip or a chip module in specific implementation.

[0139] An embodiment of the present invention further provides another computer-readable storage medium on which computer instructions are stored. When the computer instructions are executed, any one of the steps of the random access method in the above embodiments is executed, which will not be described in detail.

[0140] In a specific implementation, the computer-readable storage medium may include: ROM, RAM, magnetic disk or optical disk, etc.

[0141] An embodiment of the present invention also provides another device, wherein the user equipment may include a memory and a processor, wherein the memory stores computer instructions that can be run on the processor, and when the processor runs the computer instructions, the steps of any one of the random access methods in the above embodiments are performed, which will not be repeated here.

[0142] In a specific implementation, the device may be a user equipment, which is not specifically limited.

[0143] An embodiment of the present invention also provides another device, wherein the base station may include a memory and a processor, wherein the memory stores computer instructions that can be run on the processor, and when the processor runs the computer instructions, the steps of any one of the random access methods in the above embodiments are executed, which will not be repeated here.

[0144] In a specific implementation, the device may be a network device such as a base station.

[0145] Regarding the various modules / units included in the various devices and products described in the above embodiments, they can be software modules / units, or hardware modules / units, or they can be partially software modules / units and partially hardware modules / units. For example, for various devices and products applied to or integrated in a chip, the various modules / units included therein can all be implemented in the form of hardware such as circuits, or at least some of the modules / units can be implemented in the form of software programs, which run on a processor integrated inside the chip, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in a chip module, the various modules / units included therein can all be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component of the chip module (such as a chip, circuit module, etc.) or in different components, or at least some of the modules / units can be implemented in the form of software programs. It is implemented in the form of a software program, which runs on a processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in hardware such as circuits; for various devices and products applied to or integrated in user equipment, the various modules / units contained therein can be implemented in hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or different components in the user equipment, or, at least some modules / units can be implemented in the form of a software program, which runs on a processor integrated inside the user equipment, and the remaining (if any) modules / units can be implemented in hardware such as circuits.

[0146] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A random access method, characterized in that: include: Sending a random access request; receiving scheduling information of a random access response regarding the random access request; receiving the random access response based on the scheduling information of the random access response; Among them, the random access preamble used in the random access request or the time-frequency resources used are used to indicate the time duration required to switch from the state of sending the random access request to the state of receiving the random access response, so as to adjust the sending time of the scheduling information of the random access response.

2. A random access method, characterized in that: include: receiving a random access request; generating and sending scheduling information of a random access response to the random access request based on the random access request; Sending the random access response based on the scheduling information of the random access response; Among them, based on the random access preamble code used in the random access request or the time-frequency resources used, the duration required for switching from the state of sending the random access request to the state of receiving the random access response is determined, and the sending time of the scheduling information of the random access response is adjusted.

3. The random access method according to claim 2, characterized in that: The adjusting the sending time of the scheduling information of the random access response includes: According to the time duration capability required for transitioning from the state of sending the random access request to the state of receiving the random access response, after a preset time duration, sending the scheduling information of the random access response, where the preset time duration is greater than or equal to the time duration required for transitioning from the state of sending the random access request to the state of receiving the random access response.

4. A random access device, characterized in that: include: A first sending unit, configured to send a random access request; A first receiving unit, configured to receive scheduling information of a random access response to the random access request; A second receiving unit, configured to receive the random access response based on the scheduling information of the random access response; The random access device indicates the time length capability required for the random access device to switch from the state of sending the random access request to the state of receiving the random access response through the random access preamble code used in the random access request or the time-frequency resources used.

5. A random access device, characterized in that: include: A third receiving unit, configured to receive a random access request; A second sending unit, configured to generate and send scheduling information of a random access response to the random access request based on the random access request; A third sending unit, configured to send the random access response based on the scheduling information of the random access response; Among them, the random access device determines the duration required to switch from the state of sending the random access request to the state of receiving the random access response based on the random access preamble code used in the random access request or the time-frequency resources used, and adjusts the sending time of the scheduling information of the random access response.

6. A network device, characterized in that: Comprising the random access device as claimed in claim 5.

7. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and the computer program is executed by a processor to implement the steps of the method according to any one of claims 1 to 3.

8. A communication device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of the method according to claim 1 when running the computer program.

9. A communication device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of the method according to any one of claims 2 or 3 when running the computer program.

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