CN112888070B

CN112888070B - Random access resource configuration method and equipment

Info

Publication number: CN112888070B
Application number: CN202110045086.XA
Authority: CN
Inventors: 王志勤; 沈霞; 杜滢; 闫志宇; 焦慧颖; 刘晓峰; 魏贵明; 徐菲
Original assignee: China Academy of Information and Communications Technology CAICT
Current assignee: China Academy of Information and Communications Technology CAICT
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2022-11-11
Anticipated expiration: 2041-01-13
Also published as: CN112888070A

Abstract

The application discloses a random access resource configuration method, wherein the random access resource configuration information comprises a mapping relation between random access resources and SSBs, at least one parameter in RACH resources corresponding to each SSB in at least 2 configured SSBs is independently configured, and the RACH resources corresponding to at least 2 SSBs are supported to have different quantities. The application also includes an apparatus for using the method. The scheme of the application optimizes the random access resource configuration, supports different beams or SSBs to correspond to different RACH resource amounts, and improves the utilization efficiency of the RACH resources.

Description

Random access resource configuration method and equipment

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a method and a device for configuring random access resources.

Background

In the existing 5G mobile communication, a certain mapping relationship exists between a random access resource and a beam or a synchronization block (SSB, SS/PBSCH). In the initial access process, a base station sends Random Access (RACH) resource configuration information to a terminal through a system message, where the information includes mapping relationships between random access resources and SSBs, such as how many SSBs (SSB-perRACH-occupancy) a random access opportunity (RO) corresponds to and how many preambles (CB-preamblispssb) a SSB corresponds to on an RO, and the terminal selects an SSB through downlink signal measurement and further selects an RO and a preamble corresponding to the SSB to initiate random access. And the base station acquires the SSB correspondingly selected by the terminal by detecting the RO and the preamble and further acquires the downlink transmission beam of the base station correspondingly selected by the base station.

The amount of RACH resources corresponding to each SSB is the same in the prior art. In fact, in high-frequency deployment or non-terrestrial communication system deployment, coverage areas corresponding to each beam or SSB are different, and RACH resource requirements are also different. For example, in a non-terrestrial communication system, if a beam coverage scheme is adopted, the diameter of each beam coverage area may reach tens of kilometers or even hundreds of kilometers, the size of a coverage area of one beam is equivalent to the coverage area of one cell on the ground, and there may be a large difference in traffic volume within the coverage areas of different beams, for example, one beam coverage area may be a densely-distributed area of a terminal, and another beam coverage area may be a sparsely-distributed area of the terminal. If the existing RACH resource configuration is utilized, it may happen that the RACH resource of one SSB corresponding to the dense coverage area of the terminal is not enough to cause a high RACH collision probability, while the RACH resource of another SSB corresponding to the sparse coverage area of the terminal is too much.

Disclosure of Invention

The invention provides a random access resource configuration method and equipment, aiming at optimizing random access resource configuration, supporting different beams or different RACH resource quantities corresponding to SSB, and enabling a system to configure the corresponding RACH resource quantities according to the service requirements of an actual beam coverage area, so that the RACH collision probability is reduced on one hand, and the RACH resources can be better utilized on the other hand.

In a first aspect, the present application provides a method for configuring a random access resource, where in the random access resource configuration information, a mapping relationship between a random access resource and an SSB is included. In the configured at least 2 SSBs, at least one parameter in the RACH resource corresponding to each SSB is configured independently, and the amounts of the RACH resources corresponding to the at least 2 SSBs are supported to be different.

Preferably, each SSB group corresponds to a RACH time-frequency resource configuration, and the SSB group includes one or more SSBs; in at least 2 of the SSB groups: the number of SSBs included in each SSB group is different, and/or parameters of the mapping relationship between the SSBs in different SSB groups and the RACH resources are different. Wherein, one SSB group corresponds to a group of parameters for indicating the RACH time-frequency resource position, including RACH time domain resource configuration parameters and RACH frequency domain resource configuration parameters; or, one SSB group corresponds to one cell containing parameters for indicating the RACH time-frequency resource location, and different SSB groups may be configured the same or different for other parameters in the cell except for indicating the RACH time-frequency resource location.

Preferably, each actual SSB corresponds to a set of logical SSBs, each set of logical SSBs including one or more logical SSBs; each logic SSB has the same parameters with the RACH resource mapping relation, and the logic SSB corresponding to each actual SSB is configured independently. It is further preferred that no overlap occurs between corresponding logical SSBs of different actual SSBs.

Preferably, each SSB corresponds to a set of preambles and a set of RO configurations. Wherein, an SSB corresponds to a group of preambles, which means that an SSB corresponds to consecutive P _ num (P _ num is an integer greater than or equal to 1) preambles starting from a preamble start index P _ start (P _ start is an integer greater than or equal to 0) on an RO; one SSB corresponds to a group of ROs, and it means that one SSB corresponds to consecutive R _ num (R _ num is an integer of 1 or more) ROs starting from a start index R _ start (R _ start is an integer of 0 or more) in one SSB and RO association period.

Any one of the method embodiments of the first aspect of the present application is applied to a network device, and includes the following steps:

determining RACH resource configuration parameters corresponding to each SSB;

sending random access resource configuration information, wherein the random access resource configuration information comprises a mapping relation between random access resources and SSBs, and the random access resources support different RACH resource amounts corresponding to at least 2 SSBs;

random access preamble signals are received and detected using the RACH resource configuration.

Any one of the method embodiments in the first aspect of the present application is applied to a terminal device, and includes the following steps:

selecting the SSB according to the measured RSRP corresponding to the SSB;

and selecting the RO and the preamble corresponding to the SSB to initiate random access according to the RACH resource configuration parameters corresponding to the SSB.

In a second aspect, the present application further provides a network device using the method described in any of the embodiments of the first aspect of the present application. The network device is configured to:

determining RACH resource configuration parameters corresponding to each SSB;

random access preamble signals are received and detected using a RACH resource configuration.

In a third aspect, the present application further provides a terminal device, where with the method described in any one of the embodiments of the first aspect of the present application, the terminal device is configured to:

selecting the SSB according to the measured RSRP corresponding to the SSB;

In a fourth aspect, the present application also proposes a mobile communication device, a memory, a processor and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, implements the steps of the method according to any one of the embodiments of the first aspect of the present application.

In a fifth aspect, the present application also proposes a computer-readable medium on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the first aspect of the present application.

In a sixth aspect, the present application further provides a mobile communication system, including at least one network device according to the second aspect of the present application and at least one terminal device according to the third aspect of the present application.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

the invention optimizes the random access resource allocation, supports different wave beams or different RACH resource quantities corresponding to SSB, and can enable the system to allocate the corresponding RACH resource quantities according to the service requirement of the actual wave beam coverage area, thereby reducing the RACH collision probability on one hand and enabling the RACH resource to be better utilized on the other hand.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is an example of a prior art SSB and RACH resource mapping relationship;

fig. 2 is a flowchart of an embodiment of a random access resource allocation method according to the present application;

fig. 3 (a) is an example of the same SSB to RACH resource mapping relationship for different SSB groups;

fig. 3 (b) is an example of different SSB groups corresponding to different SSB to RACH resource mapping relationships;

FIG. 3 (c) is an example of an actual SSB and logical SSB correspondence;

FIG. 3 (d) is an example of a set of random access resources for each SSB;

FIG. 4 is a flowchart of an embodiment of a method of the present application for a network device;

FIG. 5 is a flowchart of an embodiment of a method of the present application for a terminal device;

FIG. 6 is a schematic diagram of an embodiment of a network device;

FIG. 7 is a schematic diagram of an embodiment of a terminal device;

fig. 8 is a schematic structural diagram of a network device according to another embodiment of the present invention;

fig. 9 is a block diagram of a terminal device of another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. 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 application.

The specific mobile communication technology described in the present invention is not limited, and may be WCDMA, CDMA2000, TD-SCDMA, wiMAX, LTE/LTE-a, LAA, muLTEfire, and the following fifth, sixth, and nth generation mobile communication technologies.

For convenience of description, the fourth generation mobile communication system LTE/LTE-a and its derivative MulteFire LTE-Atong are taken as examples in the following, where the mobile communication terminal is denoted as UE (User Equipment), and the network device is denoted as a base station or an access point AP.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1 is an example of a prior art SSB and RACH resource mapping relationship.

In the existing RACH resource configuration, the amount of RACH resources corresponding to each SSB is the same, after the location of the time-frequency resource of the RACH resource is determined, the SSB and the RACH resource are traversed according to the sequence of ascending preamble ID, ascending RO frequency domain ID, ascending RO time domain ID, and ascending RO time slot ID according to the parameters SSB-perRACH-occupancy and CB-preambeppssb configured in the higher layer, and the SSB and the RO are associated with the preamble. As shown in fig. 1, for example, 2 ROs correspond to 1 SSB, each SSB corresponds to 64 preambles on one RO, and assuming that the RO slots are configured on slot 1 and slot 2, and that 4 SSBs are actually sent in one SSB burst set in the system, the mapping relationship between the RO and the preamble corresponding to these 4 SSBs may be: SSB1 corresponds to 2 ROs in Slot 1; SSB2 corresponds to 2 ROs in slot 1; SSB3 corresponds to 2 ROs in slot 2; SSB4 corresponds to 2 ROs in slot 2.

Fig. 2 is a flowchart of an embodiment of a random access resource allocation method according to the present application.

The application provides a random access resource allocation method, which comprises the following steps 101 to 102.

Step 101, determining RACH resources corresponding to each SSB.

The random access resource configuration information includes a mapping relationship between the random access resource and the SSB. In the configured at least 2 SSBs, at least one parameter in the RACH resource corresponding to each SSB is configured independently, and thus the amount of RACH resource corresponding to each SSB may be the same or different.

At least one parameter in the RACH resources corresponding to each SSB is configured independently, and the amounts of the RACH resources corresponding to at least 2 SSBs are supported to be different, so that the system configures the amount of the RACH resources corresponding to the service requirement of the actual beam coverage area.

The random access resource configuration corresponding to the SSB described in the present application is represented by RACH time-frequency resource configuration parameters. The mapping relationship between the random access resource and the SSB is indicated by the configuration parameters, and includes the location and number of ROs corresponding to the SSB, and also includes the sequence number and number of preambles corresponding to the SSB.

In step 101, random access resource configuration information is generated or identified.

The random access resource configuration satisfies at least one of the following 101A-C:

101A, each SSB group corresponds to a RACH time-frequency resource configuration

One set of SSB bursts may contain one or more SSB groups containing one or more SSBs. For example, if an SSB burst set contains 8 SSBs, then an SSB burst set may contain 4 SSB groups, each SSB group containing 2 SSBs.

Each SSB group corresponds to a RACH time-frequency resource configuration. In at least 2 of said SSB groups: the number of SSBs included in each SSB group is different, and/or parameters of the mapping relationship between the SSBs in different SSB groups and the RACH resources are different.

The specific implementation mode is as follows: one SSB group corresponds to one information element containing parameters for indicating the RACH time-frequency resource location, and different SSB groups may be configured the same or different for other parameters in the information element except for indicating the RACH time-frequency resource location.

For example, an SSB group corresponds to an information element IE "RACH-ConfigGeneric" indicating RACH time-frequency resources, which includes time-domain resource configuration and frequency-domain resource configuration of RACH. If the SSB group corresponds to an IE "RACH-ConfigGeneric" for indicating RACH time-frequency resource, other parameters in the IE "RACH-ConfigGeneric" except the RACH time-frequency resource position, such as the maximum number of random access preamble transmissions, the length of a random access response window, the ascending step size of preamble retransmission power, and the like, can correspond to different configurations.

Also for example, an SSB group corresponds to a cell IE "RACH-ConfigCommon" indicating RACH time-frequency resources, which contains the cell "RACH-ConfigGeneric" described in the above section, but covers a larger range and has more parameters that can be configured independently. If the SSB group corresponds to an IE "RACH-ConfigCommon" indicating RACH time-frequency resources, other parameters in the IE "RACH-ConfigCommon" except for RACH time-frequency resource location, such as maximum number of random access preamble transmissions, random access response window length, preamble retransmission power lifting step size, msg1 subcarrier spacing, random access contention resolution response window length, etc., may support different SSB groups corresponding to different configurations.

The above cells "RACH-ConfigGeneric" and "RACH-ConfigCommon" are defined in the 38.331 standard.

In a specific implementation manner, one SSB group may correspond to a set of parameters for indicating the location of the RACH time-frequency resource, including RACH time-domain resource configuration parameters (e.g., RACH-configuration index) and RACH frequency-domain resource configuration parameters (e.g., msg1-FDM and msg 1-frequetystart). Different SSB groups correspond to different parameters indicating the location of the RACH time-frequency resource. Some parameters of the parameters indicating the RACH time-frequency resource location corresponding to any two SSB groups may be set to be the same, for example, two SSB groups correspond to the same RACH time-domain resource configuration parameter, but correspond to different RACH frequency-domain resource configuration parameters, and at this time, the parameters may also be considered as parameters indicating the RACH time-frequency resource location corresponding to different SSB groups.

Further optionally, the SSB group may correspond to an SSB-preamble-and-RO mapping relationship, that is, an SSB group corresponds to a set of parameters for indicating the SSB-preamble-and-RO mapping relationship, including a parameter indicating how many SSBs correspond to an RO (for example, SSB-perRACH-occupancy) and a parameter indicating how many preambles correspond to an RO corresponding to an SSB (for example, CB-preamble perssb). Some parameters indicating the mapping relationship between SSBs and preambles and ROs corresponding to any two SSB groups may be set to be the same, for example, two SSB groups correspond to the same parameter SSB-perRACH-occupancy, but correspond to different parameters CB-preambles Perssb, and at this time, it may be considered that different SSB groups correspond to different kinds of preambles and RO mapping relationships.

101B, each SSB corresponds to a set of logical SSBs.

Each actual SSB corresponds to a group of logic SSBs, and each group of logic SSBs comprises one or more logic SSBs; the parameters of the mapping relation between each logic SSB and the RACH resource are the same, and the logic SSBs corresponding to each actual SSB are configured independently. The number and parameters of the logic SSBs corresponding to each actual SSB may be the same or different. The logic SSB is a parameter introduced for supporting different amounts of RACH resources corresponding to actual SSBs, and does not represent actual signal transmission, and different logic SSBs correspond to the same amount of RACH resources, and through mapping between the actual SSBs and the logic SSBs, different amounts of logic SSBs corresponding to different actual SSBs can be supported, thereby supporting at least two actual SSBs corresponding to different amounts of RACH resources. It is further preferred that no overlap occurs between corresponding logical SSBs of different actual SSBs. Optionally, if the actually transmitted logical SSBs corresponding to different SSBs overlap, the base station will attempt to transmit a random access response on a beam corresponding to one or more SSBs corresponding to the received RACH.

For example, a set of the logical SSBs corresponds to one or more logical SSBs. Different logic SSBs correspond to the same RACH time-frequency resource configuration and the same parameters indicating the mapping relation of the SSBs, the preambles and the ROs. Assuming that M logical SSBs are configured, each SSB of the N actual sending SSBs corresponds to one or more of the M logical SSBs.

For example, assume that there are 8 logical SSBs { SSB1', SSB2', SSB3', SSB4', SSB5', SSB6', SSB7', SSB8' }, and 4 actual transmission SSBs { SSB1, SSB2, SSB3, SSB4}, where the correspondence between the actual transmission SSBs and the logical SSBs is shown in table 1.

TABLE 1 example of correspondence between actual sending SSB and logical SSB

101C, each SSB corresponds to a set of preambles and a set of RO configurations.

In the indication information of RACH configuration, independent configuration parameters of a set of preambles and a set of ROs for each SSB, that is, location information of a set of preambles and a set of ROs for each SSB is indicated in the RACH configuration indication information.

The embodiment is applied to one SSB corresponding to one or more RO scenarios. Wherein, an SSB corresponds to a group of preambles, which means that an SSB corresponds to consecutive P _ num (P _ num is an integer greater than or equal to 1) preambles starting from a preamble start index P _ start (P _ start is an integer greater than or equal to 0) on an RO; one SSB corresponds to a group of ROs, and it means that one SSB corresponds to consecutive R _ num (R _ num is an integer of 1 or more) ROs starting from a start index R _ start (R _ start is an integer of 0 or more) in one SSB and RO association period.

The indexes of the valid ROs in an association period are sorted in the order of frequency domain RO and time domain RO. Further, assuming that N SSBs actually occur, in the first round of SSBs and RO mapping, it is assumed that the effective RO start index corresponding to the 1 st SSB is 0, and the start position R _ start (N) of the RO corresponding to the nth (1 ≦ N) SSB is the sum of the numbers of ROs corresponding to the first N-1 SSBs and the effective RO start index corresponding to the 1 st SSB. In an association cycle, the subsequent round of SSB and RO mappings are sequentially mapped after the previous round of mappings according to the method described above.

And 102, using the random access resource corresponding to the SSB to implement a random access process.

Fig. 3 (a) to (d) include schematic diagrams of various arrangements of the above steps 101A to C.

Fig. 3 (a) is an example of the same SSB-RACH resource mapping relationship corresponding to different SSB groups.

For example, an SSB burst set comprises 4 SSBs, where { SSB1, SSB2} corresponds to a set of SSBs (first SSB group), { SSB3, SSB4} corresponds to a set of SSBs (second SSB group), and it is assumed that different sets of SSBs correspond to the same parameters for indicating the mapping relationship between SSBs and preambles and ROs, i.e., SSB-perRACH-occupancy and CB-preamblispssb parameters are the same, and it is assumed that 2 ROs correspond to 1 SSB and one SSB corresponds to 64 preambles on one RO. The RACH resources corresponding to the first SSB group occupy time slot 1 and time slot 2, wherein each time slot corresponds to 4 frequency domain ROs; the second SSB group occupies time slots 3 and 4 corresponding to RACH resources, wherein each time slot corresponds to 2 frequency domain ROs; the mapping patterns of SSB1 and SSB2 corresponding to RO and preamble in slot 1 and slot 2, and SSB3 and SSB4 corresponding to RO and preamble in slot 3 and slot 4 are as shown in fig. 3 (a).

Fig. 3 (b) different SSB groups correspond to different SSB to RACH resource mapping relationships.

For example, assume that a SSB burst set contains 4 SSBs, where { SSB1, SSB2} corresponds to a set of SSBs (first SSB group), { SSB3, SSB4} corresponds to a set of SSBs (second SSB group), assume that different sets of SSBs correspond to different parameters indicating the SSBs-to-preamble-and-RO mapping relationship, assume that for the first SSB group, 2 ROs correspond to 1 SSB, one SSB corresponds to 64 preambles on one RO, and for the second SSB group, 1 RO corresponds to 1 SSB, and one SSB corresponds to 60 preambles on one RO. The RACH resources corresponding to the first SSB group occupy time slot 1 and time slot 2, wherein each time slot is corresponding to 4 frequency domain ROs; the second SSB group occupies time slots 3 and 4 corresponding to RACH resources, wherein each time slot corresponds to 2 frequency domain ROs; the mapping patterns of the corresponding ROs and preambles in SSB1 and SSB2 in slot 1 and slot 2 and the mapping patterns of the corresponding ROs and preambles in SSB3 and SSB4 in slot 3 and slot 4 are as shown in fig. 3 (b).

Fig. 3 (c) an example of actual SSB and logical SSB correspondence.

The corresponding relationship between the logic SSB and the RACH resource is assumed as follows: 1 SSB corresponds to 2 ROs, and one SSB corresponds to 60 preambles on one RO; assuming that the time-frequency resource position of the RACH resource is as follows: the ROs are configured on the time slots 1, 2, 3, 4, each time slot corresponds to 4 frequency domain ROs, and the RACH resource and preamble corresponding to the actual transmission SSB are shown in fig. 3 (c).

Consistent with the mapping in Table 1, the first set of actual SSBs (SSB 1) corresponds to 6 ROs, i.e., contains 3 logical SSBs; the second set of actual SSBs (SSB 2) corresponds to 4 ROs, i.e. contains 2 logical SSBs; the third set of actual SSBs (SSB 3) corresponds to 4 ROs, i.e. contains 2 logical SSBs; the fourth set of SSBs (SSB 4) corresponds to 2 ROs, i.e., contains 1 logical SSB.

Fig. 3 (d) an example of a set of random access resources per SSB.

For example, 4 SSBs are actually sent, SSB1 for 5 ROs and 64 preambles for each RO; SSB2 corresponds to 5 ROs, and each RO corresponds to 60 preambles; SSB3 corresponds to 3 ROs, 64 preambles on each RO; SSB4 corresponds to 3 ROs, 56 preambles on each RO. RACH resources are configured in slots 1, 2, 3, 4, corresponding to 4 ROs in the frequency domain, and the mapping between the SSBs 1 to 4 and the ROs and preambles is shown in fig. 3 (d).

Fig. 4 is a flowchart of an embodiment of a method of the present application for a network device.

Any one of the method embodiments of the first aspect of the present application is applied to a network device, and includes the following steps 201 to 203:

step 201, determining RACH resource configuration parameters corresponding to each SSB;

step 202, sending random access resource configuration information, including a mapping relation between random access resources and SSBs, and supporting different RACH resource amounts corresponding to at least 2 SSBs;

step 203, detecting a random access preamble signal by using the RACH resource configuration.

Fig. 5 is a flowchart of an embodiment of a method of the present application for a terminal device.

Any one of the method embodiments in the first aspect of the present application, applied to a terminal device, includes the following steps 301 to 303:

301, receiving configuration information of random access resources, and identifying a mapping relation between the random access resources and an SSB;

step 302, selecting an SSB according to the measured corresponding RSRP of the SSB;

step 303, selecting the RO and the preamble corresponding to the SSB to initiate random access according to the RACH resource configuration parameters corresponding to the SSB.

Fig. 6 is a schematic diagram of an embodiment of a network device.

An embodiment of the present application further provides a network device, where, using the method according to any one of the embodiments of the present application, the network device is configured to: determining RACH resource configuration parameters corresponding to each SSB; sending random access resource configuration information, wherein the random access resource configuration information comprises a mapping relation between random access resources and SSBs, and the random access resources support different RACH resource amounts corresponding to at least 2 SSBs; detecting a random access preamble signal using a RACH resource configuration.

In order to implement the foregoing technical solution, the network device 400 provided in the present application includes a network sending module 401, a network determining module 402, and a network receiving module 403.

And the network sending module is used for sending the configuration information and sending an SSB signal.

The network determining module is configured to determine a RACH resource configuration parameter corresponding to each SSB.

The network receiving module is used for receiving a random access preamble signal.

The specific method for implementing the functions of the network sending module, the network determining module, and the network receiving module is described in the embodiments of the methods of the present application, and is not described herein again.

Fig. 7 is a schematic diagram of an embodiment of a terminal device.

The present application further provides a terminal device, which uses the method of any one of the embodiments of the present application, and is configured to: selecting the SSB according to the measured RSRP corresponding to the SSB; and selecting the RO and the preamble corresponding to the SSB to initiate random access according to the RACH resource configuration parameters corresponding to the SSB.

In order to implement the foregoing technical solution, the terminal device 500 provided in the present application includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.

The terminal receiving module is used for receiving a high-level signaling and/or a downlink control signaling; and receiving the configuration information.

The terminal determining module is configured to determine RACH resource configuration parameters corresponding to each SSB.

The terminal sending module is used for sending the random access preamble signal.

The specific method for implementing the functions of the terminal sending module, the terminal determining module and the terminal receiving module is as described in the method embodiments of the present application, and is not described herein again.

The terminal equipment can be mobile terminal equipment; it can also refer to the fixed or mobile terminal equipment set with the ground in the ground-air communication. For example, the terminal described in the present invention refers to a terminal side product capable of supporting a communication protocol of a land mobile communication system, and a special communication Modem module (Wireless Modem), which can be integrated by various terminal forms such as a mobile phone, a tablet computer, and a data card, so as to complete a communication function.

Fig. 8 is a schematic structural diagram of a network device according to another embodiment of the present invention. As shown, the network device 600 includes a processor 601, a wireless interface 602, and a memory 603. Wherein the wireless interface may be a plurality of components, i.e. including a transmitter and a receiver, providing means for communicating with various other apparatus over a transmission medium. The wireless interface implements a communication function with the terminal device, and processes wireless signals through the receiving and transmitting devices, and data carried by the signals are communicated with the memory or the processor through the internal bus structure. The memory 603 contains a computer program that executes any of the embodiments of the present application, running or changed on the processor 601. When the memory, processor, wireless interface circuit are connected through a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which are not described herein.

Fig. 9 is a block diagram of a terminal device of another embodiment of the present invention. The terminal device 700 comprises at least one processor 701, a memory 702, a user interface 703 and at least one network interface 704. The various components in the terminal device 700 are coupled together by a bus system. A bus system is used to enable the communication of the connections between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.

The user interface 703 may include a display, a keyboard, or a pointing device, such as a mouse, a trackball, a touch pad, or a touch screen, among others.

The memory 702 stores executable modules or data structures. The memory may have stored therein an operating system and an application program. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, and the like for implementing various application services.

In the embodiment of the present invention, the memory 702 contains a computer program for executing any of the embodiments of the present application, and the computer program runs or changes on the processor 701.

The memory 702 contains a computer readable storage medium, and the processor 701 reads the information in the memory 702 and combines the hardware to complete the steps of the above method. In particular, the computer-readable storage medium has stored thereon a computer program which, when being executed by the processor 701, carries out the steps of the method embodiments as described above with reference to any of the embodiments.

The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method of the present application may be implemented by integrated logic circuits in hardware or instructions in software in the processor 701. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In a typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and a memory.

Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application therefore also proposes a computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application. For example, the

memory

603, 702 of the present invention may include volatile memory in a computer readable medium, random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM).

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

Based on the embodiments in fig. 6 to 9, the present application further provides a mobile communication system, which includes at least 1 embodiment of any terminal device in the present application and/or at least 1 embodiment of any network device in the present application.

It should be noted that in the embodiment of the present invention, although the mapping configuration of the SSB and the RACH resource is established, the purpose is to support different quantities of the RACH resource in different beam coverage ranges. In the implementation of the existing system, the binding relationship between the SSB and the beam is established, so that the mapping configuration of the SSB and the RACH resource is designed by utilizing the binding relationship between the SSB and the beam, so as to support the corresponding different RACH resource configurations in different beam coverage ranges. The SSB may be equivalently replaced with the beam or other parameters having a binding relationship with the beam, and all the embodiments are within the scope of the present invention.

It should also be noted that 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 a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A method for allocating random access resources, which includes the mapping relationship between random access resources and SSBs in the configuration information of random access resources,

in at least 2 configured synchronization blocks (SSBs), at least one parameter in a Random Access Channel (RACH) resource corresponding to each SSB is independently configured, and the quantity of RACH resources corresponding to at least 2 SSBs is different; the configuration method comprises at least 1 of the following:

each SSB group corresponds to a RACH time-frequency resource configuration, and the SSB group comprises one or more SSBs; the parameters of the SSB and RACH resource mapping relation in different SSB groups are different;

each actual SSB corresponds to a group of logic SSBs, the parameters of the mapping relation between each logic SSB and RACH resources are the same, and the logic SSBs corresponding to each actual SSB are configured independently.

2. The method of claim 1,

in at least 2 of the SSB groups:

each SSB group contains a different number of SSBs.

3. The method of claim 1,

each set of logical SSBs contains one or more logical SSBs.

4. The method of claim 1,

each SSB corresponds to a set of preambles and a set of random access opportunity, RO, configurations.

5. The method of claim 1,

one SSB group corresponds to a group of parameters for indicating the RACH time-frequency resource position, and the parameters comprise RACH time domain resource configuration parameters and RACH frequency domain resource configuration parameters;

alternatively, the first and second electrodes may be,

one SSB group corresponds to one information element containing parameters for indicating the RACH time-frequency resource position, and different SSB groups are configured to be the same or different aiming at other parameters except for indicating the RACH time-frequency resource position in the information element.

6. The method of claim 3,

there is no overlap between the logical SSBs corresponding to different actual SSBs.

7. The method of claim 1,

an SSB corresponds to a group of preambles, which means that an SSB corresponds to P _ num preambles consecutive from a preamble start index P _ start on an RO, where: p _ start is an integer of 0 or more, and P _ num is an integer of 1 or more;

an SSB corresponds to a set of ROs, indicating that an SSB corresponds to R _ num ROs starting from a start index R _ start in an SSB and RO association period, where: r _ start is an integer of 0 or more, and R _ num is an integer of 1 or more.

8. The method of claim 1~7 for use in a network device, comprising the steps of:

determining RACH resource configuration parameters corresponding to each SSB;

receiving a detection random access preamble signal using the RACH resource configuration.

9. The method of any of claims 1~7 for use in a terminal device, comprising the steps of:

selecting an SSB according to the measured Reference Signal Received Power (RSRP) corresponding to the SSB;

10. A network device for implementing the method of any of claims 1~7, the network device comprising:

a network determining module, configured to determine RACH resource configuration parameters corresponding to each SSB;

a network sending module, configured to send random access resource configuration information;

and the network receiving module is used for receiving and detecting the random access preamble signal by using the RACH resource configuration.

11. A terminal device for implementing the method of any one of claims 1~7, the SSBs selected according to their corresponding RSRP; selecting RO and preamble corresponding to SSB to initiate random access according to RACH resource configuration parameters corresponding to SSB, wherein the terminal device comprises:

the terminal receiving module is used for receiving the configuration information;

a terminal determining module, configured to determine RACH resource configuration parameters corresponding to each SSB;

and the terminal sending module is used for sending the random access preamble signal.

12. A mobile communication device, comprising: memory, a processor 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 method of any one of claims 1~9.

13. A computer readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of any one of claims 1~9.

14. A mobile communication system comprising at least 1 network device according to claim 10 and at least 1 terminal device according to claim 11.