CN111278154A

CN111278154A - Random access method, terminal equipment and network side equipment

Info

Publication number: CN111278154A
Application number: CN201910082026.8A
Authority: CN
Inventors: 吴昱民
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2020-06-12

Abstract

The invention provides a random access method, terminal equipment and network side equipment, wherein the method comprises the following steps: receiving first information sent by network side equipment, wherein the first information is used for indicating a random access type; and triggering a random access process of a target random access type, wherein the target random access type is the random access type indicated by the first information. The random access method provided by the invention standardizes a mode that the network side equipment indicates the type of the random access process to be triggered to the terminal equipment under the condition that the network side can configure the resources of different types of random access processes, so that the terminal equipment can trigger the random access process of the corresponding type more accurately.

Description

Random access method, terminal equipment and network side equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a random access method, a terminal device, and a network side device.

Background

In a mobile communication System, for example, a Long Term Evolution (LTE) System, a network side may send a System message (for example, a System Information Block (SIB) 16 (also referred to as SIB16) to a User Equipment (UE) (also referred to as a terminal Equipment), where the System message may indicate a reference time (for example, refer).

When the network side provides the reference time for the UE, due to the delay effect of air interface transmission, the time point when the UE receives the reference time provided by the network side device is inconsistent with the time point when the network side device actually sends the reference time. In a case that the UE needs a reference time with higher precision (e.g., 1us (i.e., microseconds)), the UE may obtain an uplink Timing Advance (TA) by initiating a non-contention random access procedure, and correct the received reference time by the uplink Timing Advance (e.g., TA/2 is an air interface transmission delay).

However, in the prior art, in the case that the network side can configure resources of different types of random access procedures, for example, configuring resources of a random access procedure for reference time correction and resources of a conventional random access procedure, there is no relevant solution for how the network side device indicates the type of random access procedure to be triggered to the terminal device.

Disclosure of Invention

Embodiments of the present invention provide a random access method, a terminal device, and a network side device, so as to standardize a manner in which the network side device indicates a type of a random access procedure that needs to be triggered to the terminal device when a network side can configure resources of different types of random access procedures.

In order to solve the technical problem, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a random access method, which is applied to a terminal device, and the method includes:

receiving first information sent by network side equipment, wherein the first information is used for indicating a random access type;

and triggering a random access process of a target random access type, wherein the target random access type is the random access type indicated by the first information.

In a second aspect, an embodiment of the present invention further provides a random access method, which is applied to a network device, and the method includes:

and sending first information to terminal equipment, wherein the first information is used for indicating a random access type.

In a third aspect, an embodiment of the present invention further provides a terminal device. The terminal device includes:

a first receiving module, configured to receive first information sent by a network side device, where the first information is used to indicate a random access type;

a triggering module, configured to trigger a random access procedure of a target random access type, where the target random access type is a random access type indicated by the first information.

In a fourth aspect, an embodiment of the present invention further provides a network side device. The network side device includes:

the device comprises a first sending module, a second sending module and a sending module, wherein the first sending module is used for sending first information to the terminal equipment, and the first information is used for indicating a random access type.

In a fifth aspect, an embodiment of the present invention further provides a terminal device, which includes a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the random access method provided in the first aspect.

In a sixth aspect, an embodiment of the present invention further provides a network-side device, which includes a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the random access method provided in the second aspect.

In a seventh aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements the steps of the random access method provided in the first aspect, or implements the steps of the random access method provided in the second aspect.

In the embodiment of the invention, first information sent by network side equipment is received, wherein the first information is used for indicating a random access type; and triggering a random access process of a target random access type, wherein the target random access type is the random access type indicated by the first information, and a mode that the network side equipment indicates the type of the random access process to be triggered to the terminal equipment under the condition that the network side can configure resources of different types of random access processes is specified, so that the terminal equipment can trigger the random access process of the corresponding type more accurately.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a block diagram of a network system to which an embodiment of the present invention is applicable;

fig. 2 is a flowchart of a random access method provided by an embodiment of the present invention;

fig. 3 is a flowchart of a random access method according to another embodiment of the present invention;

fig. 4 is a structural diagram of a terminal device provided in an embodiment of the present invention;

fig. 5 is a structural diagram of a network-side device according to an embodiment of the present invention;

fig. 6 is a block diagram of a terminal device according to still another embodiment of the present invention;

fig. 7 is a block diagram of a network device according to another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be implemented, for example, in a sequence other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B and/or C, means that 7 cases are included that include a alone, B alone, C alone, and both a and B, B and C, a and C, and A, B and C.

Firstly, reference time:

Wherein the reference time may include at least one of:

universal Coordinated Time (UTC);

sunlight Saving Time (DST), also known as Daylight savings Time (Daylight Saving Time);

global Positioning System (GPS) time;

the local time.

When the UE receives the reference time, in order to ensure that the UE side time is consistent with the network side time, the protocol agrees that the time position corresponding to the reference time received by the UE is: the boundary of the System Frame Number (SFN) where the ending boundary of the System message transmission window of the System message is located.

For example, if the UE receives the SIB16 at the reference time at the position of (SFN _2, Subframe _1) and the system message transmission window of the SIB16 is 10 subframes (Subframe) (where there are 10 subframes in 1 SFN), the SIB16 at the time when the UE receives the reference time corresponds to the end boundary of the system message window at (SFN _3, Subframe _1), and the reference time received by the UE corresponds to the end boundary time of SFN _ 3.

The reference time provided by the network side to the UE comes from a specific clock source. For example, for the GPS time provided to the UE by the network side, the clock source of the GPS time may be a GPS satellite; for the UTC time provided by the network side to the UE, a clock source of the UTC time may be an atomic clock which is connected by a network side device (e.g., a base station or a core network device) and can provide the UTC time. Different clock sources may provide the same or different types of reference time, e.g., both clock source 1 and clock source 2 may provide UTC time. When different clock sources provide the same or different types of reference time, the accuracy of the time information provided by the different clock sources may be the same or different. For example, the granularity (or time precision) of UTC time provided by clock source 1 is 1 second, while the granularity (or time precision) of UTC time provided by clock source 2 is 1 microsecond.

Second, reference time correction

Due to the delay effect of air interface transmission, the time point when the UE receives the reference time provided by the network side device is inconsistent with the time point when the network side device actually transmits the reference time. In a case that the UE needs a reference time with higher precision (e.g., 1us (i.e., microseconds)), the UE may obtain uplink Timing Advance (TA) by initiating a non-contention random access procedure, and correct the received reference time by the uplink timing advance (e.g., TA/2 is an air interface transmission delay).

Third, Physical Downlink Control Channel (PDCCH) (or Order) triggered random access process

When the network side triggers the random access procedure, the network side may indicate the random access resource through Downlink Control Information (DCI) in the PDCCH channel, thereby triggering the UE to initiate the random access procedure.

PRACH resource information indicated by DCI of a PDCCH in a New Radio (NR) of Fifth Generation (5G) New air interface (including:

random Access Preamble Index (i.e., Random Access Preamble Index) -6 bits (i.e., bits) for indicating the Random Access procedure Preamble used, e.g., Preamble 1;

an UpLink (UL)/Supplemental UpLink (SUL) indication (i.e., Indicator) -1 bit (i.e., bit) for indicating a carrier on which the random access resource is located, for example, an UpLink SUL carrier;

synchronization Signal (SS)/Physical Broadcast Channel (PBCH) index-6 bits (bits) for indicating the random access resource associated Synchronization Signal Block (SSB), e.g., SSB 1;

a Physical Random Access Channel (PRACH) mask index (maskIndex) -4 bits (bits), which indicates a Random Access opportunity (RACH interference, RO) associated with the SS/PBCH index if a value of a Random Access preamble index field is not all 0.

The embodiment of the invention provides a random access method. Referring to fig. 1, fig. 1 is a structural diagram of a network system to which an embodiment of the present invention is applicable, and as shown in fig. 1, the network system includes a terminal Device 11 and a network-side Device 12, where the terminal Device 11 may be a user-side Device such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), and it should be noted that a specific type of the terminal Device 11 is not limited in the embodiment of the present invention. The network side device 12 may be a base station, for example: macro station, lteeenb, 5G NR NB, gNB, and the like; the network side device 12 may also be a small station, such as a Low Power Node (LPN) pico, femto, or the network side device 12 may be an Access Point (AP); the base station may also be a network node composed of a Central Unit (CU) together with a plurality of TRPs whose management is and is controlled. It should be noted that the specific type of the network-side device 12 is not limited in the embodiment of the present invention.

In an embodiment, the network side device 12 may send a random access resource configuration message to the terminal device 11 to trigger the terminal device 11 to initiate a random access procedure. The random access resource configuration message may include random access resource allocation information and random access type indication information, where the random access resource allocation information may be used to indicate a transmission resource of a random access request message of a random access procedure, and the random access type indication information may be used to indicate a random access type.

The terminal device 11 receives the random access resource allocation message, and may trigger a random access procedure of a random access type indicated by the random access type indication information according to the random access resource indicated by the random access resource allocation information.

In another embodiment, the network side device 12 may send a random access resource configuration message to the terminal device 11, where the random access resource configuration message may include random access resource allocation information, where the random access resource allocation information may be used to indicate a transmission resource of a random access request message of a random access procedure.

Further, the network side device 12 may also send a random access procedure trigger command to the terminal device 11, so as to trigger the terminal device 11 to initiate a random access procedure. The random access procedure trigger command may include random access resource indication information and random access type indication information, where the random access resource indication information may be used to indicate a transmission resource of a random access request message of a random access procedure, and the random access type indication information may be used to indicate a random access type.

After receiving the random access procedure triggering command, the terminal device 11 may trigger a random access procedure of a random access type indicated by the random access type indication information according to the random access resource indicated by the random access resource indication information.

In another embodiment, the network side device 12 may send a random access resource configuration message to the terminal device 11, where the random access resource configuration message may include random access resource allocation information, where the random access resource allocation information is used to indicate a transmission resource of a random access request message of a random access procedure.

Specifically, the network side device 12 may configure different random access resources for different random access types, so that the different random access types may be distinguished through the random access resources.

Further, the network side device 12 may also send a random access procedure trigger command to the terminal device 11, so as to trigger the terminal device 11 to initiate a random access procedure. The random access procedure trigger command may include random access resource indication information, where the random access resource indication information may be used to indicate a transmission resource of a random access request message of a random access procedure.

After receiving the random access procedure triggering command, the terminal device 11 may trigger a random access procedure of a random access type indicated by the random access resource indication information according to the random access resource indicated by the random access resource indication information.

The embodiment of the invention provides a random access method which is applied to terminal equipment. Referring to fig. 2, fig. 2 is a flowchart of a random access method provided in an embodiment of the present invention, and as shown in fig. 2, the method includes the following steps:

step 201, receiving first information sent by a network side device, where the first information is used to indicate a random access type.

In this embodiment, the network side device may implicitly indicate the random access type to the terminal device, or may indicate the random access type to the terminal device in a display manner. For example, the first information may be random access type indication information, or may be random access resource information sent by the network side device to the terminal device, where the random access resource information may be used to indicate a random access resource.

The category of the random access type may be set reasonably according to actual requirements, and may include, for example, a first random access type (e.g., random access for reference time correction) for acquiring time information (e.g., TA value) of a first time precision in a random access procedure and a second random access type (e.g., normal random access) for acquiring time information of a second time precision in the random access procedure, where the first time precision and the second time precision are different.

Alternatively, the type of the random access type may be set according to the type of time precision required for the functions supported by the mobile communication system. For example, in the case where a first function supported by the mobile communication system requires a first time accuracy, a second function supported by the mobile communication system requires a second time accuracy, and a third function supported by the mobile communication system requires a third time accuracy, the random access types may include a first random access type for acquiring time information of the first time accuracy in a random access procedure, a second random access type for acquiring time information of the second time accuracy in the random access procedure, and a third random access type for acquiring time information of the third time accuracy in the random access procedure.

Step 202, triggering a random access process of a target random access type, where the target random access type is a random access type indicated by the first information.

In this embodiment, the terminal device may trigger a random access procedure of a random access type (that is, a target random access type) indicated by the first information according to the random access resource indicated by the network side device.

For example, in a case that the target random access type is a random access type that acquires time information of a first time accuracy in a random access process, the terminal device may receive the time information of the first time accuracy from a random access response message sent by the network side device in the random access process; in the case that the target random access type is a random access type that acquires time information of a second time accuracy in a random access process, the terminal device may receive the time information of the second time accuracy from a random access response message sent by the network side device in the random access process.

The random access method provided by the embodiment of the invention receives first information sent by network side equipment, wherein the first information is used for indicating the random access type; and triggering a random access process of a target random access type, wherein the target random access type is the random access type indicated by the first information, and a mode that the network side equipment indicates the type of the random access process to be triggered to the terminal equipment under the condition that the network side can configure resources of different types of random access processes is specified, so that the terminal equipment can trigger the random access process of the corresponding type based on the first information.

Optionally, the first information may be random access type indication information, where the random access type indication information is carried in a random access resource configuration message or carried in a random access procedure trigger command.

In this embodiment, the first information may be random access type indication information, where the random access type indication information may be carried in a random access resource configuration message, for example, "reconfigurationWithSync" indication information in a rrcrecconfiguration message, or may be carried in a random access procedure trigger command, for example, a PDCCH command (i.e., Order).

Specifically, the random access type indication information may be used to indicate a random access type. For example, a first random access type for indicating that time information of a first time accuracy is acquired in a random access procedure, or a second random access type for indicating that time information of a second time accuracy is acquired in a random access procedure, where the first time accuracy and the second time accuracy are different.

It should be noted that the random access type indication information may be used to indicate any one of all random access types, for example, if N different random access types are provided, the random access type indication information may be used to indicate any one of the N different random access types, where N is an integer greater than 1.

Specifically, in an embodiment, the terminal device may receive a random access resource configuration message from the network side device to trigger the terminal device to initiate a random access procedure. The random access resource configuration message may include random access resource allocation information and random access type indication information. The random access resource allocation information may be used to indicate a transmission resource of a random access request message of a random access procedure, for example, a PRACH resource of Msg1 or an MsgA resource of a two-Step (i.e., 2-Step) RACH. It should be noted that different random access types may configure the same random access resource, and may also configure different random access resources, which is not limited in this embodiment.

After receiving the random access resource configuration message, the terminal device may trigger a random access procedure of a random access type indicated by the random access type indication information according to the random access resource indicated by the random access resource allocation information.

In another embodiment, the terminal device may receive a random access resource configuration message from the network side device, where the random access resource configuration message is used for a subsequent network side device to trigger the terminal device to initiate a random access procedure. For example, the network side device may first configure a resource (e.g., PRACH resource) of an available random access request message to the terminal device, and when the network side device needs the terminal device to trigger the random access procedure, the network side device sends indication information (e.g., a PDCCH order) to trigger the terminal device to initiate the random access procedure.

Specifically, the random access resource configuration message may include random access resource allocation information, where the random access resource allocation information may be used to indicate a transmission resource of a random access request message in a random access procedure. E.g. the PRACH resources of Msg1 or the MsgA resources of a two-Step (i.e. 2-Step) RACH. It should be noted that different random access types may configure the same random access resource, and may also configure different random access resources, which is not limited in this embodiment.

Optionally, the random access resource configuration message may further include random access type indication information.

Further, the terminal device may also receive a random access procedure trigger command from the network side device to trigger the terminal device to initiate a random access procedure. The random access procedure trigger command may include random access resource indication information and random access type indication information, where the random access resource indication information may be used to indicate a transmission resource of a random access request message of a random access procedure. It should be noted that the resource information indicated by the random access resource indication information may refer to PRACH resource information indicated by the DCI, which is not described herein again.

After receiving the random access process triggering command, the terminal device may trigger a random access process of a random access type indicated by the random access type indication information according to the random access resource indicated by the random access resource indication information.

Optionally, the random access type indication information may include:

indication information for indicating a target random access type;

the target random access type is used for indicating time information of target time precision obtained in a random access process, the target time precision is one of M different time precisions, and M is an integer greater than 1.

In this embodiment, the value of M may be set reasonably according to actual requirements, for example, the value of M is 2 or 3. Alternatively, the M different time accuracies may be set according to the kind of time accuracy required for the functions supported by the mobile communication system.

For example, in a case where a first time precision is required for a first function supported by the mobile communication system, a second time precision is required for a second function supported by the mobile communication system, and a third time precision is required for a third function supported by the mobile communication system, the M different time precisions may include the first time precision, the second time precision, and the third time precision.

The target time precision may be any one of M different time precisions. For example, when the time precision required by the currently used function of the terminal device is the first time precision, the terminal device may be instructed to obtain the time information of the first time precision in the random access process; and under the condition that the time precision required by the current adopted function of the terminal equipment is the second time precision, the terminal equipment can be instructed to acquire the time information of the second time precision in the random access process.

Taking M different time precisions including two time precisions, i.e. high time precision and normal time precision as an example, the random access type indication information may include any one of the following:

indication information for indicating acquisition of time information of high time accuracy in a random access process;

and indication information for indicating that time information of regular time precision is acquired in the random access procedure.

Specifically, the time information with high time precision (such as a TA value) may be a Timing Advance Command (TAC) sent to the terminal device through a random access response message, and the value may be a value indicating high precision through bits of a plurality of bits. For example, a 16-bit TAC provides a time precision (also referred to as granularity, i.e. adjacent values differ by 0.1us) of a TA value of 0.05 us.

The time information of the above-mentioned regular time precision may also be the TAC sent to the UE through the random access response message, and the value may be a value indicating a lower precision by a bit of fewer bits. For example, a 12-bit TAC provides a time accuracy (i.e., adjacent value difference of 1us) of a TA value of 0.5 us.

Optionally, the first information includes first random access resource information sent by the network side device to the terminal device.

In this embodiment, the first information may include random access resource information sent by the network side device to the terminal device, that is, first random access resource information. The first random access resource information may be used to indicate a transmission resource of a random access request message of a random access procedure.

In practical application, the network side device may configure different random access resources for different random access types, so that different random access types may be distinguished through the random access resources.

In this embodiment, the random access resource information indicates the random access type, so that resources required for indicating the random access type can be saved.

Optionally, the method may further include:

receiving a corresponding relation between the random access type and the random access resource information sent by the network side equipment;

and determining the target random access type indicated by the first random access resource information according to the corresponding relation.

In this embodiment, the terminal device may receive the corresponding relationship between the random access type and the random access resource information from the network side device, so that the random access type corresponding to the random access resource information may be searched from the corresponding relationship based on the random access resource information sent to the terminal device by the network side device.

Optionally, the first random access resource information includes at least one of:

a preamble of a random access resource;

a carrier of a random access resource;

a signal associated with a random access resource;

random access opportunity RO for random access to the resource.

In an embodiment, preambles of random access request resources of different random access types may be different. For example, the range of the Preamble (i.e., Preamble) employed by the random access type 1 may be [1, 10], and the range of the Preamble employed by the random access type 2 may be [11, 64 ].

In another embodiment, the carriers of the random access request resources of different random access types may be different. For example, random access type 1 employs carrier 1 (e.g., SUL carrier), and random access type 2 employs carrier 2 (e.g., Normal Uplink (NUL) carrier).

In another embodiment, the signals associated with random access request resources of different random access types may be different. For example, random access type 1 is associated with SSB1/3/5, and random access type 2 is associated with SSB 2/4/5.

In another embodiment, the ROs for random access request resources of different random access types may be different. For example, random access type 1 corresponds to RO1/2/3, and type 1 corresponds to RO 4/5/6.

The above embodiments may be combined arbitrarily according to actual needs. For example, the preambles of the random access request resources of different random access types are different, and the carriers of the random access request resources of different random access types are different; or the carriers of the random access request resources of different random access types are different, and the signals associated with the random access request resources of different random access types are different, which are not listed here.

Optionally, the triggering the random access procedure of the target random access type may include:

sending a random access request message to the network side equipment;

and receiving time information of target time precision from a random access response message sent by the network side equipment, wherein the target time precision is the time precision indicated by the target random access type.

In this embodiment, the target random access type is used to indicate that time information with a target time accuracy is obtained in a random access process, and therefore, the terminal device may send a random access request message to the network device on a random access resource indicated by the network device to request time information with the target time accuracy, and may receive the time information with the target time accuracy from a random access response message sent by the network device.

For example, if a random access request message of a random access procedure is used to request time information of a first time precision (e.g., a TA value of a high time precision), the terminal device may receive the time information of the first time precision in a random access response message of the random access procedure; if the random access request message of the random access procedure is used to request time information of the second time precision (e.g., TA value of regular time precision), the terminal device may receive the time information of the second time precision in the random access response message of the random access procedure.

In practical application, the terminal device may indicate the time precision of the time information requested by the network side device through the random access resource carrying the random access request message. Specifically, since the network side device has configured the random access type corresponding to each random access resource, the time accuracy of the requested time information can be determined based on the random access resource corresponding to each terminal device.

The embodiment of the invention provides a random access method which is applied to network side equipment. Referring to fig. 3, fig. 3 is a flowchart of a random access method provided in an embodiment of the present invention, as shown in fig. 3, including the following steps:

step 301, sending first information to a terminal device, where the first information is used to indicate a random access type.

The random access method provided by the embodiment of the invention sends first information to the terminal equipment, wherein the first information is used for indicating the random access type, and specifies a mode that the network side equipment indicates the type of the random access process to be triggered to the terminal equipment under the condition that the network side can configure resources of different types of random access processes, so that the terminal equipment can trigger the random access process of the corresponding type based on the first information.

Optionally, the first information is random access type indication information, where the random access type indication information is carried in a random access resource configuration message or carried in a random access procedure trigger command.

Specifically, in an embodiment, the network side device may send a random access resource configuration message to the terminal device, so as to trigger the terminal device to initiate a random access procedure. The random access resource configuration message may include random access resource allocation information and random access type indication information. The random access resource allocation information may be used to indicate a transmission resource of a random access request message of a random access procedure, for example, a PRACH resource of Msg1 or an MsgA resource of a two-Step (i.e., 2-Step) RACH. It should be noted that different random access types may configure the same random access resource, and may also configure different random access resources, which is not limited in this embodiment.

In another embodiment, the network side device may send a random access resource configuration message to the terminal device. The random access resource configuration message is used for triggering the terminal device to initiate a random access process by the subsequent network side device. For example, the network side device may first configure a resource (e.g., PRACH resource) of an available random access request message to the terminal device, and when the network side device needs the terminal device to trigger the random access procedure, the network side device sends indication information (e.g., a PDCCH order) to trigger the terminal device to initiate the random access procedure.

Further, the network side device may send a random access procedure trigger command to the terminal device to trigger the terminal device to initiate a random access procedure. The random access procedure trigger command may include random access resource indication information and random access type indication information, where the random access resource indication information may be used to indicate a transmission resource of a random access request message of a random access procedure. It should be noted that the resource information indicated by the random access resource indication information may refer to PRACH resource information indicated by the DCI, which is not described herein again.

Optionally, the random access type indication information includes:

indication information for indicating a target random access type;

Optionally, the first information includes first random access resource information.

In this embodiment, the first random access resource information may be any random access resource information configured by the network side device for the terminal device. Specifically, the first random access resource information may be used to indicate a transmission resource of a random access request message of a random access procedure.

Optionally, the method may further include:

and sending the corresponding relation between the random access type and the random access resource information to the terminal equipment.

In this embodiment, the network side device may send the corresponding relationship between the random access type and the random access resource information to the terminal device, so that the terminal device may search the random access type corresponding to the random access resource information from the corresponding relationship based on the random access resource information sent to the terminal device by the network side device.

a preamble of a random access resource;

a carrier of a random access resource;

a signal associated with a random access resource;

random access opportunity RO for random access to the resource.

In another embodiment, the carriers of the random access request resources of different random access types may be different. For example, random access type 1 employs carrier 1 (e.g., SUL carrier), and random access type 2 employs carrier 2 (e.g., NUL carrier).

Optionally, the method may further include:

receiving a random access request message sent by the terminal equipment;

and sending a random access response message to the terminal equipment, wherein the random access response message carries time information of target time precision, and the target time precision is the time precision corresponding to the random access resource bearing the random access request message.

In this embodiment, the network side device may determine the time precision of the time information requested by the terminal device based on the random access resource carrying the random access request message. Specifically, since the network side device has configured the random access type corresponding to each random access resource, the requested time accuracy can be determined based on the random access resource corresponding to each terminal device.

After determining the time accuracy requested by the terminal device, the network side device may send a random access response message to the terminal device, and the random access response message carries time information of the time accuracy requested by the network side device.

For example, if a random access request message of a random access procedure is used to request time information (e.g., a TA value with high time accuracy) with a first time accuracy, the time information with the first time accuracy is carried in a random access response message of the random access procedure; if the random access request message of the random access procedure is used to request time information of the second time precision (for example, a TA value of a conventional time precision), the time information of the second time precision may be carried in the random access response message of the random access procedure.

The following describes embodiments of the present invention with reference to examples:

example one: the RRC message triggers the random access procedure.

Specifically, the random access method provided by the embodiment of the present invention includes the following steps:

step a1, the network side sends a random access resource configuration message to the UE for triggering the UE to initiate a random access process.

For example, "reconfigurationWithSync" indication information in the RRCReconfiguration message.

The random access resource configuration message may include:

random access resource allocation information;

random access type indication information.

The random access resource allocation information may include a transmission resource of a random access request message in a random access procedure. E.g. the PRACH resources of Msg1 or the MsgA resources of a two-Step (i.e. 2-Step) RACH.

The random access type indication information may include any one of the following:

indication information for indicating to acquire a TA value with high time precision in a random access process;

indication information for indicating a TA value for acquiring a regular time precision in a random access procedure.

The TA value with high time precision may be a Timing Advance Command (TAC) sent to the terminal device through a random access response message, and the TA value may represent higher precision through bits of more bits. For example, a 16-bit TAC provides a time precision (also referred to as granularity, i.e. adjacent values differ by 0.1us) of a TA value of 0.05 us.

The TA value of the above-mentioned regular time precision may also be the TAC sent to the UE through the random access response message, and the value may be a value indicating a lower precision by a bit of fewer bits. For example, a 12-bit TAC provides a time accuracy (i.e., adjacent value difference of 1us) of a TA value of 0.5 us.

Step a2, according to the random access resource configuration message in the step a1, the UE triggers the random access process.

In this step, if the random access request message of the random access procedure is used to request a TA value with high time accuracy, the UE receives the TA value with high time accuracy in the random access response message of the random access procedure;

if the random access request message of the random access procedure is used for requesting the TA value of the regular time precision, the UE receives the TA value of the regular time precision in the random access response message of the random access procedure.

Example two: the PDCCH orders a triggered random access process and distinguishes resources of the random access process through DCI indication.

Specifically, the random access method provided by the embodiment of the present invention may include the following steps:

step b1, the network side sends the random access resource configuration message to the UE, the random access resource configuration message is used for the follow-up network to trigger the UE to initiate the random access process.

For example, the network side first configures resources (e.g., PRACH resources) of an available random access request message for the UE, and when the network side needs the UE to trigger a random access procedure, the network side sends indication information (e.g., a PDCCH order) to trigger the UE to initiate the random access procedure.

The random access resource configuration message may include:

random access resource allocation information;

random access type indication information.

The random access resource allocation information may include a transmission resource of a random access request message in a random access procedure. E.g. the PRACH resources of Msg1 or the MsgA resources of a two-Step (i.e. 2-Step) RACH. It should be noted that different random access types may configure the same random access resource.

Step b2, the network side sends a random access procedure trigger command (e.g. PDCCH command) to trigger the UE to initiate a random access procedure. For example, the configured random access request resources of the two random access types to the UE from the network side are the same.

Wherein, the random access procedure triggering command may include:

random access resource indication information;

random access type indication information.

The resource information indicated by the random access resource indication information may refer to PRACH resource information indicated by the DCI, which is not described herein again.

Step b3, according to the random access resource configuration message in step b1, the UE triggers the random access process.

Example three: the PDCCH order triggers a random access process, and the random access types are distinguished through random access resources configured by RRC.

step c1, the network side sends the random access resource configuration message to the UE, the random access resource configuration message is used for the follow-up network to trigger the UE to initiate the random access process.

The random access resource configuration message may include:

random access resource allocation information;

random access type indication information.

Further, the network side may configure different random access resources for different random access types, and the configuration method may include any combination of one or more of the following:

the random access request resources of different random access types have different lead codes; for example, the range of the Preamble (i.e., Preamble) adopted by the random access type 1 may be [1, 10], the range of the Preamble adopted by the random access type 2 may be [11, 64 ];

the carriers of the random access request resources of different random access types are different; for example, random access type 1 employs carrier 1 (e.g., SUL carrier), random access type 2 employs carrier 2 (e.g., NUL carrier);

the signals associated with the random access request resources of different random access types are different; for example, random access type 1 association SSB1/3/5, random access type 2 association SSB 2/4/5;

the random access request resources of different random access types have different RO; for example, random access type 1 corresponds to RO1/2/3, and type 1 corresponds to RO 4/5/6.

Step c2, the network side sends a random access procedure trigger command (e.g. PDCCH command) to trigger the UE to initiate a random access procedure.

Step c3, according to the random access resource configuration message in step c1, when the network side configures different random access resources for different random access types, the UE triggers the corresponding random access process type according to the random access resource indicated in step c 2.

For example, random access responses at corresponding random access procedure types receive TA values of different accuracies.

Specifically, in this step, if the random access request message of the random access procedure is used to request a TA value with high time accuracy, the UE receives the TA value with high time accuracy in the random access response message of the random access procedure;

According to the random access method provided by the embodiment of the invention, the network side can be configured with various different types of random access processes, and when the network side indicates the UE to trigger the random access process, the UE can trigger the random access process of corresponding type through reasonable configuration and indication of random access resources.

Referring to fig. 4, fig. 4 is a structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 4, the terminal device 400 includes:

a first receiving module 401, configured to receive first information sent by a network side device, where the first information is used to indicate a random access type;

a triggering module 402, configured to trigger a random access procedure of a target random access type, where the target random access type is a random access type indicated by the first information.

Optionally, the random access type indication information includes:

indication information for indicating a target random access type;

Optionally, the terminal device further includes:

a second receiving module, configured to receive a correspondence between a random access type and random access resource information sent by the network side device;

and a determining module, configured to determine, according to the corresponding relationship, a target random access type indicated by the first random access resource information.

a preamble of a random access resource;

a carrier of a random access resource;

a signal associated with a random access resource;

random access opportunity RO for random access to the resource.

Optionally, the triggering a random access procedure of a target random access type includes:

a sending module, configured to send a random access request message to the network side device;

a third receiving module, configured to receive time information of a target time precision from a random access response message sent by the network side device, where the target time precision is the time precision indicated by the target random access type.

The terminal device 400 provided in the embodiment of the present invention can implement each process implemented by the terminal device in the foregoing method embodiments, and for avoiding repetition, details are not described here again.

In the terminal device 400 of the embodiment of the present invention, the first receiving module 401 is configured to receive first information sent by a network side device, where the first information is used to indicate a random access type; a triggering module 402, configured to trigger a random access procedure of a target random access type, where the target random access type is a random access type indicated by the first information. The method for indicating the type of the random access process to be triggered to the terminal equipment by the network side equipment under the condition that the network side can configure the resources of the random access processes of different types is standardized, so that the terminal equipment can trigger the random access process of the corresponding type more accurately.

Referring to fig. 5, fig. 5 is a structural diagram of a network side device according to an embodiment of the present invention. As shown in fig. 5, the network side device 500 includes:

a first sending module 501, configured to send first information to a terminal device, where the first information is used to indicate a random access type.

Optionally, the random access type indication information includes:

indication information for indicating a target random access type;

Optionally, the network side device further includes:

and the second sending module is used for sending the corresponding relation between the random access type and the random access resource information to the terminal equipment.

a preamble of a random access resource;

a carrier of a random access resource;

a signal associated with a random access resource;

random access opportunity RO for random access to the resource.

Optionally, the network side device further includes:

a receiving module, configured to receive a random access request message sent by the terminal device;

and a third sending module, configured to send a random access response message to the terminal device, where the random access response message carries time information of a target time precision, and the target time precision is a time precision corresponding to a random access resource carrying the random access request message.

The network side device 500 provided in the embodiment of the present invention can implement each process implemented by the network side device in the foregoing method embodiments, and for avoiding repetition, details are not described here again.

The network side device 500 of the embodiment of the present invention, the first sending module 501 is configured to send first information to the terminal device, where the first information is used to indicate a random access type. The method for indicating the type of the random access process to be triggered to the terminal equipment by the network side equipment under the condition that the network side can configure the resources of the random access processes of different types is standardized, so that the terminal equipment can trigger the random access process of the corresponding type more accurately.

Fig. 6 is a structural diagram of another terminal device according to an embodiment of the present invention. Referring to fig. 6, the terminal device 600 includes, but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 610, and a power supply 611. Those skilled in the art will appreciate that the terminal device configuration shown in fig. 6 does not constitute a limitation of the terminal device, and that the terminal device may include more or fewer components than shown, or combine certain components, or a different arrangement of components. In the embodiment of the present invention, the terminal device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The radio frequency unit 601 is configured to receive first information sent by a network side device, where the first information is used to indicate a random access type;

the processor 610 is configured to trigger a random access procedure of a target random access type, where the target random access type is a random access type indicated by the first information.

The embodiment of the invention standardizes a mode that the network side equipment indicates the type of the random access process to be triggered to the terminal equipment under the condition that the network side can configure the resources of different types of random access processes, so that the terminal equipment can trigger the random access process of the corresponding type more accurately.

Optionally, the random access type indication information includes:

indication information for indicating a target random access type;

Optionally, the radio frequency unit 601 is further configured to: receiving a corresponding relation between the random access type and the random access resource information sent by the network side equipment;

the processor 610 is further configured to: and determining the target random access type indicated by the first random access resource information according to the corresponding relation.

a preamble of a random access resource;

a carrier of a random access resource;

a signal associated with a random access resource;

random access opportunity RO for random access to the resource.

Optionally, the processor 610 is further configured to:

sending a random access request message to the network side equipment;

It should be understood that, in the embodiment of the present invention, the radio frequency unit 601 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 610; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 601 may also communicate with a network and other devices through a wireless communication system.

The terminal device provides the user with wireless broadband internet access through the network module 602, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 603 may convert audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into an audio signal and output as sound. Also, the audio output unit 603 can also provide audio output related to a specific function performed by the terminal apparatus 600 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 603 includes a speaker, a buzzer, a receiver, and the like.

The input unit 604 is used to receive audio or video signals. The input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics processor 6041 processes image data of a still picture or video obtained by an image capturing apparatus (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 606. The image frames processed by the graphic processor 6041 may be stored in the memory 609 (or other storage medium) or transmitted via the radio frequency unit 601 or the network module 602. The microphone 6042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 601 in case of the phone call mode.

The terminal device 600 further comprises at least one sensor 605, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the luminance of the display panel 6061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 6061 and/or the backlight when the terminal apparatus 600 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal device posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 605 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 606 is used to display information input by the user or information provided to the user. The Display unit 606 may include a Display panel 6061, and the Display panel 6061 may be configured by a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 607 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal device. Specifically, the user input unit 607 includes a touch panel 6071 and other input devices 6072. Touch panel 6071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 6071 using a finger, stylus, or any suitable object or accessory). The touch panel 6071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 610, receives a command from the processor 610, and executes the command. In addition, the touch panel 6071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 607 may include other input devices 6072 in addition to the touch panel 6071. Specifically, the other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 6071 can be overlaid on the display panel 6061, and when the touch panel 6071 detects a touch operation on or near the touch panel 6071, the touch operation is transmitted to the processor 610 to determine the type of the touch event, and then the processor 610 provides a corresponding visual output on the display panel 6061 according to the type of the touch event. Although in fig. 6, the touch panel 6071 and the display panel 6061 are two independent components to implement the input and output functions of the terminal device, in some embodiments, the touch panel 6071 and the display panel 6061 may be integrated to implement the input and output functions of the terminal device, and this is not limited here.

The interface unit 608 is an interface for connecting an external device to the terminal apparatus 600. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 608 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal apparatus 600 or may be used to transmit data between the terminal apparatus 600 and an external device.

The memory 609 may be used to store software programs as well as various data. The memory 609 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 609 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 610 is a control center of the terminal device, connects various parts of the entire terminal device by using various interfaces and lines, and performs various functions of the terminal device and processes data by running or executing software programs and/or modules stored in the memory 609 and calling data stored in the memory 609, thereby performing overall monitoring of the terminal device. Processor 610 may include one or more processing units; preferably, the processor 610 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 610.

The terminal device 600 may further include a power supply 611 (such as a battery) for supplying power to various components, and preferably, the power supply 611 may be logically connected to the processor 610 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.

In addition, the terminal device 600 includes some functional modules that are not shown, and are not described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal device, which includes a processor 610, a memory 609, and a computer program stored in the memory 609 and capable of running on the processor 610, where the computer program, when executed by the processor 610, implements each process of the foregoing random access method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

Referring to fig. 7, fig. 7 is a block diagram of a network side device according to another embodiment of the present invention. As shown in fig. 7, the network-side device 700 includes: a processor 701, a memory 702, a bus interface 703 and a transceiver 704, wherein the processor 701, the memory 702 and the transceiver 704 are all connected to the bus interface 703.

In this embodiment of the present invention, the network side device 700 further includes: a computer program stored on the memory 702 and executable on the processor 701.

In this embodiment of the present invention, the transceiver 704 is configured to:

Optionally, the random access type indication information includes:

indication information for indicating a target random access type;

Optionally, the transceiver 704 is further configured to:

a preamble of a random access resource;

a carrier of a random access resource;

a signal associated with a random access resource;

random access opportunity RO for random access to the resource.

Optionally, the transceiver 704 is further configured to:

receiving a random access request message sent by the terminal equipment;

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the foregoing embodiment of the random access method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A random access method is applied to a terminal device, and is characterized by comprising the following steps:

2. The method of claim 1, wherein the first information is random access type indication information, and wherein the random access type indication information is carried in a random access resource configuration message or a random access procedure trigger command.

3. The method of claim 2, wherein the random access type indication information comprises:

indication information for indicating a target random access type;

4. The method according to claim 1, wherein the first information includes first random access resource information sent by the network side device to the terminal device.

5. The method of claim 4, further comprising:

6. The method of claim 4, wherein the first random access resource information comprises at least one of:

a preamble of a random access resource;

a carrier of a random access resource;

a signal associated with a random access resource;

random access opportunity RO for random access to the resource.

7. The method of claim 1, wherein the triggering the random access procedure of the target random access type comprises:

sending a random access request message to the network side equipment;

8. A random access method is applied to network side equipment, and is characterized by comprising the following steps:

9. The method of claim 8, wherein the first information is random access type indication information, and wherein the random access type indication information is carried in a random access resource configuration message or a random access procedure trigger command.

10. The method of claim 8, wherein the random access type indication information comprises:

indication information for indicating a target random access type;

11. The method of claim 8, wherein the first information comprises first random access resource information.

12. The method of claim 11, further comprising:

13. The method of claim 11, wherein the first random access resource information comprises at least one of:

a preamble of a random access resource;

a carrier of a random access resource;

a signal associated with a random access resource;

random access opportunity RO for random access to the resource.

14. The method of claim 8, further comprising:

receiving a random access request message sent by the terminal equipment;

15. A terminal device, comprising:

16. The terminal device according to claim 15, wherein the first information is random access type indication information, and wherein the random access type indication information is carried in a random access resource configuration message or a random access procedure trigger command.

17. The terminal device according to claim 16, wherein the random access type indication information comprises:

indication information for indicating a target random access type;

18. The terminal device according to claim 15, wherein the first information includes first random access resource information sent by the network side device to the terminal device.

19. A network-side device, comprising:

20. The network-side device of claim 19, wherein the first information is random access type indication information, and wherein the random access type indication information is carried in a random access resource configuration message or a random access procedure trigger command.

21. The network-side device of claim 20, wherein the random access type indication information comprises:

indication information for indicating a target random access type;

22. The network-side device of claim 19, wherein the first information comprises first random access resource information.

23. A terminal device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the random access method according to any one of claims 1 to 7.

24. A network side device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the random access method according to any one of claims 8 to 14.

25. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, realizes the steps of the random access method according to one of the claims 1 to 7 or realizes the steps of the random access method according to one of the claims 8 to 14.