Method and apparatus in node used for wireless communication

Abstract

The invention discloses a method and an apparatus in a node used for wireless communication. The first receiver is used for receiving first PRACH configuration, the first PRACH configuration comprises configuration information of a plurality of PRACH opportunity groups, and any PRACH opportunity group in the plurality of PRACH opportunity groups comprises a plurality of PRACH opportunities; the first transmitter determines a target PRACH resource, and sends a target random access lead code by using a target PRACH opportunity; the target PRACH resource comprises the target random access preamble and the target PRACH opportunity, and the number of the PRACH opportunity occupied by the sending of the target random access preamble is 1; wherein the first PRACH resource comprises a first random access lead code and a first PRACH opportunity; whether the candidate of the target PRACH resource includes the first PRACH resource is related to the plurality of PRACH opportunity groups and a target random access preamble set, and the target random access preamble set is configurable.

Description

Technical Field

[0001] The present application relates to a transmission method and device in a wireless communication system, and in particular to a transmission method and device for wireless signals in a wireless communication system supporting a cellular network. Background Art

[0002] When a user equipment wants to communicate with the network but there are no uplink shared channels or control channel resources available for transmission, or when the uplink transmission is in an unsynchronized state, PRACH (Physical random access channel) is used for random access; configuring a PRACH opportunity group for PRACH transmission (each PRACH opportunity group includes multiple PRACH occasions) is an effective means to achieve uplink coverage enhancement. A UE configured with a PRACH opportunity group can choose to use a single PRACH opportunity or a PRACH opportunity group for PRACH transmission in a specific scenario. Summary of the invention

[0003] For UEs configured with multiple PRACH opportunity groups, when it is determined to use a single PRACH opportunity for PRACH transmission, how to determine the PRACH resources to be used is a key problem that must be solved; the present application discloses solutions to the above problems. The present application can be applied to a variety of wireless communication scenarios, such as cellular networks, Internet of Vehicles, Internet of Things, satellite communication networks, etc., and achieve similar technical effects. In addition, the use of a unified solution for different scenarios (including but not limited to cellular networks, Internet of Vehicles, Internet of Things, satellite communication networks) can also help reduce hardware complexity and cost, or improve performance. In the absence of conflict, the embodiments and features in any node of the present application can be applied to any other node. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0004] When necessary, the interpretation of the terms in this application may refer to the description of the specification protocols TS37 series and TS38 series of 3GPP (3rd Generation Partner Project).

[0005] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0006] receiving a first PRACH configuration, the first PRACH configuration comprising configuration information of a plurality of PRACH opportunity groups, any one of the plurality of PRACH opportunity groups comprising a plurality of PRACH opportunities;

[0007] Determine a target PRACH resource, and use a target PRACH opportunity to send a target random access preamble; the target PRACH resource includes the target random access preamble and the target PRACH opportunity, and the number of PRACH opportunities occupied by the sending of the target random access preamble is 1;

[0008] Among them, the first PRACH resource includes a first random access preamble code and a first PRACH opportunity; whether the candidates for the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble code set, and the target random access preamble code set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble code belongs to the target random access preamble code set, the first PRACH resource is one of the candidates for the target PRACH resource.

[0009] As an embodiment, the problem to be solved by the present application includes: how to determine the candidate of the target PRACH resource.

[0010] As an embodiment, the problem to be solved by the present application includes: how to enhance the configuration of PRACH resources for a UE configured with multiple PRACH opportunity groups.

[0011] As an embodiment, the problem to be solved by the present application includes: how to improve the performance of random access.

[0012] As an embodiment, the benefits of the above method include: improving the utilization efficiency of the PRACH opportunities in the PRACH opportunity group.

[0013] As an embodiment, the benefits of the above method include: being helpful in overcoming / alleviating interference between a PRACH transmission occupying multiple PRACH opportunities and a PRACH transmission occupying only a single PRACH opportunity.

[0014] As an embodiment, the benefits of the above method include: being helpful in improving the success probability of random access.

[0015] According to one aspect of the present application, the above method is characterized in that:

[0016] The first PRACH opportunity is an available PRACH opportunity in a first PRACH opportunity set, and the first PRACH opportunity set is configurable.

[0017] According to one aspect of the present application, the above method is characterized in that:

[0018] The first PRACH opportunity group subset includes at least one PRACH opportunity group among the multiple PRACH opportunity groups, and is a true subset of the multiple PRACH opportunity groups; when the first PRACH opportunity belongs to a PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to a first random access preamble set, the first PRACH resource is not one of the candidates for the target PRACH resource; when the first PRACH opportunity does not belong to any PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to a first random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource; the first random access preamble set is configurable and mutually exclusive with the target random access preamble set.

[0019] As an embodiment, the benefits of the above method include: improving configuration flexibility.

[0020] According to one aspect of the present application, the above method is characterized in that:

[0021] When the first PRACH opportunity belongs to one of the multiple PRACH opportunity groups and the first random access preamble does not belong to the target random access preamble set, the first PRACH resource is not one of the candidates for the target PRACH resource.

[0022] According to one aspect of the present application, the above method is characterized in that:

[0023] The first node randomly selects the target PRACH resource from the candidates of the target PRACH resources with medium probability.

[0024] According to one aspect of the present application, the above method is characterized in that:

[0025] The PRACH opportunities included in any of the candidates for the target PRACH resource are mapped to the index of the first SSB, and the random access preamble codes included in any of the candidates for the target PRACH resource are associated with the index of the first SSB.

[0026] According to one aspect of the present application, the above method is characterized in that:

[0027] Any two PRACH opportunities in one PRACH opportunity group among the multiple PRACH opportunity groups do not overlap in the time domain.

[0028] As an embodiment, the benefits of the above method include: reducing the complexity of system design.

[0029] According to one aspect of the present application, the above method is characterized in that:

[0030] Any two PRACH opportunities in one PRACH opportunity group among the multiple PRACH opportunity groups occupy the same frequency domain resources.

[0031] As an embodiment, the benefits of the above method include: reducing the complexity of system design.

[0032] According to one aspect of the present application, the above method is characterized in that:

[0033] The first PRACH configuration includes at least one field in the information element RACH-ConfigCommon.

[0034] As an embodiment, the benefits of the above method include: reusing existing information elements and reducing the workload of standardization.

[0035] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0036] Sending a first PRACH configuration, where the first PRACH configuration includes configuration information of multiple PRACH opportunity groups, and any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities;

[0037] receiving a target random access preamble in a target PRACH opportunity; the number of PRACH opportunities occupied by sending the target random access preamble being 1;

[0038] Among them, the transmitting end of the target random access preamble determines the target PRACH resource, and the target PRACH resource includes the target random access preamble and the target PRACH opportunity; the first PRACH resource includes the first random access preamble and the first PRACH opportunity; whether the candidates of the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble set, and the target random access preamble set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble belongs to the target random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource.

[0039] According to one aspect of the present application, the above method is characterized in that:

[0040] The first PRACH opportunity is an available PRACH opportunity in a first PRACH opportunity set, and the first PRACH opportunity set is configurable.

[0041] According to one aspect of the present application, the above method is characterized in that:

[0042] The first PRACH opportunity group subset includes at least one PRACH opportunity group among the multiple PRACH opportunity groups, and is a true subset of the multiple PRACH opportunity groups; when the first PRACH opportunity belongs to a PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to a first random access preamble set, the first PRACH resource is not one of the candidates for the target PRACH resource; when the first PRACH opportunity does not belong to any PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to a first random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource; the first random access preamble set is configurable and mutually exclusive with the target random access preamble set.

[0043] According to one aspect of the present application, the above method is characterized in that:

[0044] When the first PRACH opportunity belongs to one of the multiple PRACH opportunity groups and the first random access preamble does not belong to the target random access preamble set, the first PRACH resource is not one of the candidates for the target PRACH resource.

[0045] According to one aspect of the present application, the above method is characterized in that:

[0046] The transmitter of the target random access preamble code randomly selects the target PRACH resource from the candidates of the target PRACH resource with medium probability.

[0047] According to one aspect of the present application, the above method is characterized in that:

[0048] The PRACH opportunities included in any of the candidates for the target PRACH resource are mapped to the index of the first SSB, and the random access preamble codes included in any of the candidates for the target PRACH resource are associated with the index of the first SSB.

[0049] According to one aspect of the present application, the above method is characterized in that:

[0050] Any two PRACH opportunities in one PRACH opportunity group among the multiple PRACH opportunity groups do not overlap in the time domain.

[0051] According to one aspect of the present application, the above method is characterized in that:

[0052] Any two PRACH opportunities in one PRACH opportunity group among the multiple PRACH opportunity groups occupy the same frequency domain resources.

[0053] According to one aspect of the present application, the above method is characterized in that:

[0054] The first PRACH configuration includes at least one field in the information element RACH-ConfigCommon.

[0055] The present application discloses a first node used for wireless communication, characterized in that it includes:

[0056] A first receiver receives a first PRACH configuration, wherein the first PRACH configuration includes configuration information of multiple PRACH opportunity groups, and any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities;

[0057] A first transmitter determines a target PRACH resource and uses a target PRACH opportunity to send a target random access preamble; the target PRACH resource includes the target random access preamble and the target PRACH opportunity, and the number of PRACH opportunities occupied by the sending of the target random access preamble is 1;

[0058] Among them, the first PRACH resource includes a first random access preamble code and a first PRACH opportunity; whether the candidates for the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble code set, and the target random access preamble code set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble code belongs to the target random access preamble code set, the first PRACH resource is one of the candidates for the target PRACH resource.

[0059] The present application discloses a second node used for wireless communication, characterized in that it includes:

[0060] A second transmitter sends a first PRACH configuration, where the first PRACH configuration includes configuration information of multiple PRACH opportunity groups, and any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities;

[0061] A second receiver receives a target random access preamble in a target PRACH opportunity; the number of PRACH opportunities occupied by sending the target random access preamble is 1;

[0062] Among them, the transmitting end of the target random access preamble determines the target PRACH resource, and the target PRACH resource includes the target random access preamble and the target PRACH opportunity; the first PRACH resource includes the first random access preamble and the first PRACH opportunity; whether the candidates of the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble set, and the target random access preamble set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble belongs to the target random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0064] Figure 1 A processing flow chart of a first node according to an embodiment of the present application is shown;

[0065] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present application is shown;

[0066] Figure 3 A schematic diagram showing a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application is shown;

[0067] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0068] Figure 5 A signal transmission flow chart according to an embodiment of the present application is shown;

[0069] Figure 6 A schematic diagram illustrating whether the candidate of the target PRACH resource includes the first PRACH resource according to an embodiment of the present application;

[0070] Figure 7 A structural block diagram of a processing device in a first node device according to an embodiment of the present application is shown;

[0071] Figure 8A structural block diagram of a processing device in a second node device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0072] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

[0073] Example 1

[0074] Embodiment 1 illustrates a processing flow chart of a first node according to an embodiment of the present application, as shown in the attached Figure 1 shown.

[0075] In Embodiment 1, the first node in the present application receives a first PRACH configuration in step 101; determines a target PRACH resource in step 102; and uses a target PRACH opportunity to send a target random access preamble in step 103.

[0076] In embodiment 1, the first PRACH configuration includes configuration information of multiple PRACH opportunity groups, any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities; the target PRACH resource includes the target random access preamble and the target PRACH opportunity, and the number of PRACH opportunities occupied by the sending of the target random access preamble is 1; the first PRACH resource includes a first random access preamble and a first PRACH opportunity; whether the candidate of the target PRACH resource includes the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble set, and the target random access preamble set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble belongs to the target random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource.

[0077] As an embodiment, the first PRACH configuration includes RRC signaling.

[0078] As an embodiment, the first PRACH configuration includes configuration parameters for random access.

[0079] As an embodiment, the first PRACH configuration includes at least one field in the information element (IE) RACH-ConfigCommon.

[0080] As an embodiment, the first PRACH configuration includes an information element RACH-ConfigCommon.

[0081] As an embodiment, the first PRACH configuration includes an information element RACH-ConfigGeneric.

[0082] As an embodiment, the first PRACH configuration includes at least one field in the information element RACH-ConfigGeneric.

[0083] As an embodiment, the first PRACH configuration includes configuration parameters of frequency domain resources for PRACH occasions.

[0084] As an embodiment, the first PRACH configuration includes configuration parameters of time domain resources for PRACH occasions.

[0085] As an embodiment, the first PRACH configuration indicates the multiple PRACH opportunity groups.

[0086] As an embodiment, the first PRACH configuration indicates the frequency domain resources occupied by each PRACH opportunity group in the multiple PRACH opportunity groups.

[0087] As an embodiment, the first PRACH configuration indicates the time domain resources occupied by each PRACH opportunity group in the multiple PRACH opportunity groups.

[0088] As an embodiment, the first PRACH configuration indicates the PRACH opportunities included in each PRACH opportunity group in the multiple PRACH opportunity groups.

[0089] As an embodiment, the first PRACH configuration includes configuration information of PRACH occasions, and each PRACH opportunity group in the multiple PRACH opportunity groups is composed of more than one PRACH occasions configured by the first PRACH configuration.

[0090] As an embodiment, which PRACH opportunities are included in one of the multiple PRACH opportunity groups is based on a predefined mapping rule or is configurable.

[0091] As an embodiment, the first PRACH configuration includes configuration parameters of a random access preamble code.

[0092] As an embodiment, the first PRACH configuration includes configuration parameters of a mapping relationship between SS / PBCH block indexes and PRACH opportunities.

[0093] As an embodiment, the first PRACH configuration includes configuration parameters of the association relationship between SS / PBCH block index and random access preambles.

[0094] As an embodiment, any PRACH opportunity in any PRACH opportunity group in the multiple PRACH opportunity groups is configured to be mapped to a first SS / PBCH block (synchronization signals / physicalbroadcastchannelblock, SSB) index.

[0095] As an embodiment, any PRACH opportunity in any PRACH opportunity group in the multiple PRACH opportunity groups is a valid PRACH opportunity, and the definition of the valid PRACH opportunity refers to Section 8.1 of 3GPP TS 38.213.

[0096] As an embodiment, one SS / PBCH block index is mapped to multiple consecutive valid PRACH opportunities, and multiple contention based preambles with consecutive indices associated with the one SS / PBCH block index are provided for each of the multiple consecutive valid PRACH opportunities; or: at least one SS / PBCH block index is mapped to one valid PRACH opportunity, and multiple contention based preambles with consecutive indices associated with any one of the at least one SS / PBCH block index are provided for the one valid PRACH opportunity.

[0097] As an embodiment, the mapping relationship between SS / PBCH block index, PRACH opportunity and random access preamble is configurable.

[0098] As an embodiment, before determining the target PRACH resource, the first node determines to use only one PRACH opportunity to send the PRACH.

[0099] As an embodiment, the first node determines to use only one PRACH opportunity to send PRACH according to SS-RSRP (Synchronization Signal Reference Signal Received Power, reference signal received power of synchronization signal).

[0100] As an embodiment, K is used to represent the number of PRACH opportunities to be determined for sending PRACH; the first node is configured with N thresholds, the N thresholds are sorted from large to small, and K has N+1 candidate values; when the SS-RSRP of at least one available SSB is greater than the i+1th threshold among the N thresholds and the SS-RSRP of all available SSBs is not greater than the i-th threshold among the N thresholds, the K is determined to be the i+1th value among the candidate values ​​of K sorted from small to large; i is any positive integer less than N; when the SS-RSRP of at least one available SSB is greater than the first threshold among the N thresholds, the K is determined to be 1; when the SS-RSRP of all available SSBs is not greater than the minimum threshold among the N thresholds, the K is determined to be the maximum value among the candidate values ​​of K.

[0101] As an embodiment, before determining the target PRACH resource, based on the above rules, the first node determines that K is 1 according to the measurement result of SS-RSRP of SSB.

[0102] As an embodiment, before determining the target PRACH resource, the first node determines on its own to use only one PRACH opportunity to send PRACH.

[0103] As an embodiment, the SS-RSRP of an SSB is obtained by measuring at least a portion of the SSB.

[0104] As an embodiment, the SS-RSRP of an SSB is the linear average over the power contributions of the resource elements carrying the secondary synchronization signal in the SSB.

[0105] As an embodiment, the time-frequency resources occupied by a PRACH opportunity are configurable.

[0106] As an embodiment, the first node selects a first SSB.

[0107] As an embodiment, the first SS / PBCH block index is the index of the first SSB.

[0108] As an embodiment, the first node determines the first SSB by itself.

[0109] As an embodiment, the first node measures the SS-RSRP of multiple SSBs; if there is at least one available SSB whose corresponding SS-RSRP is higher than a first threshold, the first SSB is an SSB whose corresponding SS-RSRP is higher than the first threshold; otherwise, the first SSB is an SSB determined by the first node itself; the first threshold is configurable.

[0110] As an embodiment, the first threshold is configured by RRC signaling.

[0111] As an embodiment, the first threshold is indicated by rsrp-ThresholdSSB.

[0112] As an embodiment, the first threshold is indicated by rsrp-ThresholdSSB-SUL.

[0113] As an embodiment, the first threshold is indicated by rsrp-ThresholdCSI-RS.

[0114] As an embodiment, the first threshold is configured by MAC CE (Medium Access Control layer Control Element, media access control layer control element).

[0115] As an embodiment, the first node measures the SS-RSRP of multiple SSBs; the first SSB is an SSB with the highest SS-RSRP among the multiple SSBs.

[0116] As an embodiment, when the index of an SSB is configured to map to a PRACH opportunity, the PRACH opportunity is mapped to the SSB.

[0117] As an embodiment, when the index of an SSB is not configured to be mapped to a PRACH opportunity, the PRACH opportunity is not mapped to the SSB.

[0118] As an embodiment, the first node determines the target PRACH resource from the candidates of the target PRACH resource.

[0119] As an embodiment, the first node independently determines the target PRACH resource from the candidates of the target PRACH resource.

[0120] As an embodiment, the first node randomly selects the target PRACH resource from the candidate medium probability of the target PRACH resource.

[0121] As an embodiment, the determining the target PRACH resource includes: determining the target random access preamble code, and determining the target PRACH opportunity.

[0122] As an embodiment, the determining the target random access preamble code includes: randomly selecting the target random access preamble code with medium probability from multiple random access preamble codes.

[0123] As an embodiment, the first node determines the target random access preamble code by itself from multiple random access preamble codes.

[0124] As an embodiment, the multiple random access preamble codes are configurable.

[0125] As an embodiment, the multiple random access preamble codes include the target random access preamble code set.

[0126] As an embodiment, for any random access preamble among the multiple random access preambles, there is at least one candidate for the target PRACH resource including this random access preamble.

[0127] As an embodiment, determining the target PRACH opportunity means: selecting the target PRACH opportunity.

[0128] As an embodiment, determining the target PRACH opportunity includes: determining the next available PRACH opportunity corresponding to the first SSB, the target PRACH opportunity being randomly selected with equal probability from multiple first-type PRACH opportunities, and the first-type PRACH opportunity is mapped to the first SSB and is available.

[0129] As an embodiment, the expression "next" in this application means: the earliest.

[0130] As an embodiment, for any of the first type PRACH opportunities, there is at least one candidate for the target PRACH resource including the target random access preamble and this PRACH opportunity.

[0131] As an embodiment, any of the first type PRACH opportunities is in a target period.

[0132] As an embodiment, the target period is the first type period in which the next available PRACH opportunity corresponding to the first SSB is located, or the first first type period after the first type period in which the next available PRACH opportunity corresponding to the first SSB is located; the first type period is configurable.

[0133] As an embodiment, there is one PRACH opportunity of the first type in the target period and is included in at least one candidate of the target PRACH resource.

[0134] As an embodiment, the first type of period is configurable.

[0135] As an embodiment, one of the first-type cycles includes multiple association mode cycles.

[0136] As an embodiment, one first-type period includes 2 association mode periods.

[0137] As an embodiment, one of the first-type cycles includes 4 association mode cycles.

[0138] As an embodiment, one first-type cycle includes 8 association mode cycles.

[0139] As an embodiment, the number of association mode periods included in one first-type period is configurable.

[0140] As an embodiment, the durations occupied by any two of the first-type cycles are the same.

[0141] As an embodiment, an association mode period depends on a mapping relationship between multiple SS / PBCH (synchronization signals / physical broadcast channel) block indices and multiple PRACH opportunities.

[0142] As an embodiment, an association pattern period (associationpatternperiod) includes one or more association periods (associationperiod(s)) mapping between SS / PBCH block indices and PRACH opportunities.

[0143] As an embodiment, the mapping pattern between SS / PBCH block indexes and PRACH opportunities is repeated between different association pattern periods.

[0144] As an embodiment, the first node determines the target PRACH opportunity by itself.

[0145] As an embodiment, when a PRACH opportunity is after the UE completes preparation for sending a PRACH, the PRACH opportunity is an available PRACH opportunity.

[0146] As an embodiment, when the start time of a PRACH opportunity is later than the end time when the UE completes preparation for sending the PRACH, the PRACH opportunity is an available PRACH opportunity.

[0147] As an embodiment, when a PRACH opportunity can be used to perform PRACH transmission, the PRACH opportunity is an available PRACH opportunity.

[0148] As an embodiment, the UE completes the preparation for sending PRACH including: selection of the first SSB.

[0149] As an embodiment, the UE completes the preparation for sending PRACH including: selecting the first random access preamble code.

[0150] As an embodiment, the UE completes the preparation for sending PRACH including: selecting a random access preamble group A or B.

[0151] As an embodiment, a PRACH opportunity corresponding to the first SSB is: a PRACH opportunity mapped to the index of the first SSB.

[0152] As an embodiment, the first node does not repeatedly send the target random access preamble code multiple times in any PRACH opportunity group among the multiple PRACH opportunity groups.

[0153] As an embodiment, the candidates for the target PRACH resource include multiple PRACH resources.

[0154] As an embodiment, one PRACH resource includes one of the configured random access preamble codes and one of the configured PRACH opportunities.

[0155] As an embodiment, the first PRACH opportunity is one of a first PRACH opportunity set, and the first PRACH opportunity set is configurable.

[0156] As an embodiment, the first PRACH opportunity set includes multiple PRACH opportunities.

[0157] As an embodiment, the first PRACH opportunity set is configured by RRC signaling.

[0158] As an embodiment, the first PRACH opportunity set includes more than one PRACH opportunities configured by the first PRACH configuration.

[0159] As an embodiment, the first PRACH opportunity is an available PRACH opportunity in the first PRACH opportunity set.

[0160] As an embodiment, the first PRACH opportunity is any available PRACH opportunity in the first PRACH opportunity set.

[0161] As an embodiment, the first random access preamble code is one of multiple random access preamble codes.

[0162] As an embodiment, the first random access preamble code is any random access preamble code among the multiple random access preamble codes.

[0163] As an embodiment, the multiple random access preamble codes are configurable.

[0164] As an embodiment, the multiple random access preamble codes are all configured for non-contention random access.

[0165] As an embodiment, random access preamble group B (Random Access Preambles group B) is not configured.

[0166] As an embodiment, the multiple random access preambles are all random access preambles in a random access preamble group A (Random Access Preambles group A).

[0167] As an embodiment, the multiple random access preambles are all random access preambles in random access preamble group B.

[0168] As an embodiment, the PRACH opportunities included in any candidate of the target PRACH resource are available.

[0169] As an embodiment, whether the candidates of the target PRACH resource include the first PRACH resource depends on the multiple PRACH opportunity groups.

[0170] As an embodiment, whether the candidates of the target PRACH resources include the first PRACH resource depends on the target random access preamble code set.

[0171] As an embodiment, the target random access preamble code set is configured by RRC signaling.

[0172] As an embodiment, the target random access preamble set includes at least one random access preamble.

[0173] As an embodiment, the target random access preamble code set is configured for PRACH transmission occupying only one PRACH opportunity.

[0174] As an embodiment, when the first PRACH opportunity belongs to one of the multiple PRACH opportunity groups and the first random access preamble code does not belong to the target random access preamble code set, the first PRACH resource is not one of the candidates for the target PRACH resource.

[0175] As an embodiment, when a PRACH opportunity group includes a PRACH opportunity, the PRACH opportunity belongs to the PRACH opportunity group; when a PRACH opportunity group does not include a PRACH opportunity, the PRACH opportunity does not belong to the PRACH opportunity group.

[0176] As an embodiment, any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities for repeated transmission of random access preamble codes.

[0177] As an embodiment, according to the mapping relationship between the random access preamble (Random Access Preamble) and the SSB, the random access preamble included in any one of the candidates of the target PRACH resource is mapped to the first SSB; the mapping relationship between the random access preamble and the SSB is configurable.

[0178] As an embodiment, the target random access preamble is configured for non-contention random access.

[0179] As an embodiment, random access preamble group B (Random Access Preambles group B) is not configured.

[0180] As an embodiment, the target random access preamble is a random access preamble in a random access preamble group A (Random Access Preambles group A).

[0181] As an embodiment, the target random access preamble is a random access preamble in random access preamble group B.

[0182] Example 2

[0183] Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in the attached Figure 2 shown.

[0184] Attached Figure 2A diagram of a network architecture 200 for 5G NR, LTE (Long-Term Evolution) and LTE-A (Long-Term Evolution Advanced) systems is illustrated. The 5G NR or LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200 or some other suitable term. EPS 200 may include one or more UEs (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, EPC (Evolved Packet Core) / 5G-CN (5G-Core Network, 5G Core Network) 210, HSS (Home Subscriber Server) 220 and Internet Service 230. EPS may be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, EPS provides packet switching services, but those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks that provide circuit switching services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol terminations towards UE 201. gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (transmit receive node), or some other suitable term. gNB 203 provides an access point to EPC / 5G-CN 210 for UE 201. Examples of UE 201 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine type communication devices, land vehicles, cars, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE 201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term. gNB 203 is connected to EPC / 5G-CN 210 via an S1 / NG interface.EPC / 5G-CN 210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / UPF (User Plane Function) 211, other MME / AMF / UPF214, S-GW (Service Gateway) 212 and P-GW (Packet Data Network Gateway) 213. MME / AMF / UPF211 is a control node that handles signaling between UE201 and EPC / 5G-CN 210. Generally, MME / AMF / UPF211 provides bearer and connection management. All user IP (Internet Protocal) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW213. P-GW213 provides UE IP address allocation and other functions. P-GW213 is connected to Internet service 230. The Internet service 230 includes the operator's corresponding Internet protocol services, which may specifically include the Internet, intranet, IMS (IP Multimedia Subsystem) and packet switching streaming services.

[0185] As an embodiment, the UE201 corresponds to the first node in the present application.

[0186] As an embodiment, the gNB203 corresponds to the second node in this application.

[0187] As an embodiment, the UE201 corresponds to the first node in the present application, and the gNB203 corresponds to the second node in the present application.

[0188] As an embodiment, the gNB203 is a macrocellular base station.

[0189] As an embodiment, the gNB203 is a micro cell base station.

[0190] As an embodiment, the gNB203 is a picoCell base station.

[0191] As an embodiment, the gNB203 is a home base station (Femtocell).

[0192] As an embodiment, the gNB203 is a base station device that supports large delay difference.

[0193] As an embodiment, the gNB203 is a flying platform device.

[0194] As an embodiment, the gNB203 is a satellite device.

[0195] Example 3

[0196] Embodiment 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture of the control plane 300 for a first communication node device (UE, gNB or RSU in V2X) and a second communication node device (gNB, UE or RSU in V2X), or between two UEs is shown with three layers: Layer 1, Layer 2 and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to as PHY301 in this article. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first communication node device and the second communication node device and the two UEs through PHY301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets, and provides support for inter-zone mobility of the first communication node device between the second communication node device. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layer using RRC signaling between the second communication node device and the first communication node device. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture used for the first communication node device and the second communication node device in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes a SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS flows and data radio bearers (DRBs) to support the diversity of services. Although not shown in the figure, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., an IP layer) terminated at the P-GW on the network side and an application layer terminated at the other end of the connection (e.g., a remote UE, a server, etc.).

[0197] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0198] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0199] As an embodiment, the first PRACH configuration in the present application is generated in the RRC sublayer 306.

[0200] As an embodiment, the first PRACH configuration in the present application is generated in the MAC sublayer 302.

[0201] Example 4

[0202] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in the attached figure. Figure 4 shown. Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0203] The first communication device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 and an antenna 420 .

[0204] The second communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454 and an antenna 452.

[0205] In transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 layer. In transmission from the first communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the second communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0206] In the transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream destined for the second communication device 450. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

[0207] In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function at the first communication device 410 described in the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the first communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0208] In the transmission from the second communication device 450 to the first communication device 410, the function at the first communication device 410 is similar to the reception function at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 storing program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the second communication device 450 to the first communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0209] As an embodiment, the first node in the present application includes the second communication device 450 , and the second node in the present application includes the first communication device 410 .

[0210] As a sub-embodiment of the above embodiment, the first node is a user equipment, and the second node is a relay node.

[0211] As a sub-embodiment of the above embodiment, the first node is a user equipment, and the second node is a base station device.

[0212] As a sub-embodiment of the above embodiment, the first node is a relay node, and the second node is a base station device.

[0213] As a sub-embodiment of the above embodiment, the second communication device 450 includes: at least one controller / processor; the at least one controller / processor is responsible for HARQ operation.

[0214] As a sub-embodiment of the above embodiment, the first communication device 410 includes: at least one controller / processor; the at least one controller / processor is responsible for HARQ operation.

[0215] As a sub-embodiment of the above embodiment, the first communication device 410 includes: at least one controller / processor; the at least one controller / processor is responsible for error detection using positive acknowledgement (ACK) and / or negative acknowledgement (NACK) protocols to support HARQ operations.

[0216] As an embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 450 device at least: receives a first PRACH configuration, the first PRACH configuration includes configuration information of multiple PRACH opportunity groups, any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities; determines a target PRACH resource, and uses the target PRACH opportunity to send a target random access preamble; the target PRACH resource includes the target random access preamble and the target PRACH opportunity, and the number of PRACH opportunities occupied by the sending of the target random access preamble is 1; wherein the first PRACH resource includes a first random access preamble and a first PRACH opportunity; whether the candidate of the target PRACH resource includes the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble set, and the target random access preamble set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble belongs to the target random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource.

[0217] As a sub-embodiment of the above embodiment, the second communication device 450 corresponds to the first node in this application.

[0218] As an embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates an action when executed by at least one processor, the action including: receiving a first PRACH configuration, the first PRACH configuration including configuration information of a plurality of PRACH opportunity groups, any one of the plurality of PRACH opportunity groups including a plurality of PRACH opportunities; determining a target PRACH resource, using the target PRACH opportunity to send a target random access preamble; the target PRACH resource including the target random access preamble and the target PRACH opportunity, the target random access preamble The number of PRACH opportunities occupied by the sending of the preamble is 1; wherein the first PRACH resource includes a first random access preamble and a first PRACH opportunity; whether the candidates for the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble set, and the target random access preamble set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble belongs to the target random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource.

[0219] As a sub-embodiment of the above embodiment, the second communication device 450 corresponds to the first node in this application.

[0220] As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The first communication device 410 device at least: sends a first PRACH configuration, the first PRACH configuration includes configuration information of multiple PRACH opportunity groups, any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities; receives a target random access preamble in a target PRACH opportunity; the number of PRACH opportunities occupied by the sending of the target random access preamble is 1; wherein the sender of the target random access preamble determines a target PRACH resource, the target PRACH resource includes the target random access preamble and the target PRACH H opportunity; the first PRACH resource includes a first random access preamble and a first PRACH opportunity; whether the candidates for the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble set, and the target random access preamble set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble belongs to the target random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource.

[0221] As a sub-embodiment of the above embodiment, the first communication device 410 corresponds to the second node in this application.

[0222] As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates an action when executed by at least one processor, the action including: sending a first PRACH configuration, the first PRACH configuration including configuration information of multiple PRACH opportunity groups, any one of the multiple PRACH opportunity groups including multiple PRACH opportunities; receiving a target random access preamble in a target PRACH opportunity; the number of PRACH opportunities occupied by the sending of the target random access preamble is 1; wherein the sending end of the target random access preamble determines a target PRACH resource, the target The PRACH resource includes the target random access preamble and the target PRACH opportunity; the first PRACH resource includes the first random access preamble and the first PRACH opportunity; whether the candidates of the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble set, and the target random access preamble set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble belongs to the target random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource.

[0223] As a sub-embodiment of the above embodiment, the first communication device 410 corresponds to the second node in this application.

[0224] As an embodiment, at least one of {the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, the controller / processor 459, the memory 460, the data source 467} is used to receive the first PRACH configuration in the present application.

[0225] As an embodiment, at least one of {the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller / processor 475, and the memory 476} is used to send the first PRACH configuration in the present application.

[0226] As an embodiment, at least one of {the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller / processor 459, the memory 460, the data source 467} is used to determine the target PRACH resource in the present application.

[0227] As an embodiment, at least one of {the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller / processor 459, the memory 460, the data source 467} is used to send the target random access preamble code in the present application.

[0228] As an embodiment, at least one of {the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, the controller / processor 475, and the memory 476} is used to receive the target random access preamble code in the present application.

[0229] Example 5

[0230] Embodiment 5 illustrates a signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 5 As shown in the attached Figure 5 In the embodiment, the first node U1 and the second node U2 communicate with each other through an air interface.

[0231] The first node U1 receives a first PRACH configuration in step S511; determines a target PRACH resource in step S511A; and uses a target PRACH opportunity to send a target random access preamble in step S512.

[0232] The second node U2 sends a first PRACH configuration in step S521; and receives a target random access preamble code in a target PRACH opportunity in step S522.

[0233] In embodiment 5, the first PRACH configuration includes configuration information of multiple PRACH opportunity groups, any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities; the target PRACH resource includes the target random access preamble and the target PRACH opportunity, and the number of PRACH opportunities occupied by the sending of the target random access preamble is 1; the first PRACH resource includes a first random access preamble and a first PRACH opportunity; whether the candidate of the target PRACH resource includes the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble set, and the target random access preamble set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble belongs to the target random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource; the first PRACH configuration includes at least one field in the information element RACH-ConfigCommon.

[0234] As a sub-embodiment of Example 5, the first PRACH opportunity group subset includes at least one PRACH opportunity group among the multiple PRACH opportunity groups, and is a true subset of the multiple PRACH opportunity groups; when the first PRACH opportunity belongs to a PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to a first random access preamble set, the first PRACH resource is not one of the candidates for the target PRACH resource; when the first PRACH opportunity does not belong to any PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to a first random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource; the first random access preamble set is configurable and mutually exclusive with the target random access preamble set.

[0235] As a sub-embodiment of Embodiment 5, when the first PRACH opportunity belongs to one of the multiple PRACH opportunity groups and the first random access preamble code does not belong to the target random access preamble code set, the first PRACH resource is not one of the candidates for the target PRACH resource.

[0236] As an embodiment, the first node U1 is the first node in this application.

[0237] As an embodiment, the second node U2 is the second node in the present application.

[0238] As an embodiment, the first node U1 is a UE.

[0239] As an embodiment, the second node U2 is a base station.

[0240] As an embodiment, the air interface between the second node U2 and the first node U1 is a Uu interface.

[0241] As an embodiment, the air interface between the second node U2 and the first node U1 includes a cellular link.

[0242] As an embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between a base station device and a user equipment.

[0243] As an embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between a satellite device and a user equipment.

[0244] As an embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between a relay device and a user equipment.

[0245] As an embodiment, the candidate for the target PRACH resource is for the first node.

[0246] As an embodiment, the multiple PRACH opportunity groups are configured in the form of broadcast or multicast.

[0247] Example 6

[0248] Embodiment 6 illustrates a schematic diagram of whether the candidate for the target PRACH resource includes the first PRACH resource according to an embodiment of the present application, as shown in the attached figure. Figure 6 shown.

[0249] In embodiment 6, the first PRACH opportunity group subset includes at least one PRACH opportunity group among the multiple PRACH opportunity groups, and is a true subset of the multiple PRACH opportunity groups; when the first PRACH opportunity belongs to a PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to a first random access preamble set, the first PRACH resource is not one of the candidates for the target PRACH resource; when the first PRACH opportunity does not belong to any PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to a first random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource; the first random access preamble set is configurable and mutually exclusive with the target random access preamble set.

[0250] As an embodiment, the first random access preamble code set includes at least one random access preamble code.

[0251] As an embodiment, the first random access preamble code set is configured for the first PRACH opportunity group subset.

[0252] As an embodiment, the first random access preamble code set is configured for PRACH transmission occupying K0 PRACH opportunities.

[0253] As an embodiment, the multiple random access preamble codes in the present application include the first random access preamble code set.

[0254] As an embodiment, the first PRACH opportunity group subset is configurable.

[0255] As an embodiment, the PRACH opportunities included in each PRACH opportunity group in the first PRACH opportunity group subset are configurable.

[0256] As an embodiment, the number of PRACH opportunities included in each PRACH opportunity group in the first PRACH opportunity group subset is K0, where K0 is a positive integer greater than 1.

[0257] As an embodiment, K0 is configurable.

[0258] As an embodiment, K0 is equal to 2.

[0259] As an embodiment, K0 is equal to 4.

[0260] As an embodiment, K0 is equal to 8.

[0261] As an embodiment, K0 is any one of 2 and 4.

[0262] As an embodiment, K0 is any one of 2 and 8.

[0263] As an embodiment, K0 is any one of 4 and 8.

[0264] As an embodiment, K0 is any one of 2, 4, and 8.

[0265] As an embodiment, K0 is any value in a first value set, and the first value set is configurable and includes at least one positive integer.

[0266] As an embodiment, the number of PRACH opportunities included in a PRACH opportunity group among the multiple PRACH opportunity groups that does not belong to the first PRACH opportunity group subset is not the K0.

[0267] As an embodiment, the number of PRACH opportunities included in any PRACH opportunity group in the multiple PRACH opportunity groups that does not belong to the first PRACH opportunity group subset is not the K0.

[0268] As an embodiment, any two PRACH opportunities in a PRACH opportunity group do not overlap in the time domain.

[0269] As an embodiment, there is no random access preamble code that belongs to both the first random access preamble code set and the target random access preamble code set.

[0270] As an embodiment, the candidates for the target PRACH resource include the first PRACH resource, in which case the first PRACH resource is one of the candidates for the target PRACH resource; or, the candidates for the target PRACH resource do not include the first PRACH resource, in which case the first PRACH resource is not one of the candidates for the target PRACH resource.

[0271] Example 7

[0272] Embodiment 7 illustrates a structural block diagram of a processing device in a first node device of an embodiment, as shown in the attached figure. Figure 7 As shown in the attached Figure 7 In the embodiment, the first node device processing apparatus A00 includes a first receiver A01 and a first transmitter A02.

[0273] As an embodiment, the first node device A00 is a user equipment.

[0274] As an embodiment, the first node device A00 is a relay node.

[0275] As an embodiment, the first node device A00 is a vehicle-mounted communication device.

[0276] As an embodiment, the first receiver A01 includes the attached Figure 4 At least one of the antenna 452, receiver 454, multi-antenna reception processor 458, reception processor 456, controller / processor 459, memory 460 and data source 467.

[0277] As an embodiment, the first receiver A01 includes the attached Figure 4 At least the first five of the antenna 452, receiver 454, multi-antenna receive processor 458, receive processor 456, controller / processor 459, memory 460 and data source 467.

[0278] As an embodiment, the first receiver A01 includes the attached Figure 4 At least the first four of the antenna 452, receiver 454, multi-antenna receive processor 458, receive processor 456, controller / processor 459, memory 460 and data source 467.

[0279] As an embodiment, the first receiver A01 includes the attached Figure 4 At least the first three of the antenna 452, receiver 454, multi-antenna receive processor 458, receive processor 456, controller / processor 459, memory 460 and data source 467.

[0280] As an embodiment, the first receiver A01 includes the attached Figure 4 At least the first two of the antenna 452, receiver 454, multi-antenna receive processor 458, receive processor 456, controller / processor 459, memory 460 and data source 467.

[0281] As an embodiment, the first transmitter A02 includes the attached Figure 4 At least one of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0282] As an embodiment, the first transmitter A02 includes the attached Figure 4 At least the first five of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0283] As an embodiment, the first transmitter A02 includes the attached Figure 4 At least the first four of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0284] As an embodiment, the first transmitter A02 includes the attached Figure 4 At least the first three of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0285] As an embodiment, the first transmitter A02 includes the attached Figure 4 At least the first two of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0286] As an embodiment, the first receiver A01 receives a first PRACH configuration, the first PRACH configuration includes configuration information of multiple PRACH opportunity groups, and any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities; the first transmitter A02 determines a target PRACH resource and uses the target PRACH opportunity to send a target random access preamble; the target PRACH resource includes the target random access preamble and the target PRACH opportunity, and the number of PRACH opportunities occupied by the sending of the target random access preamble is 1 ; wherein the first PRACH resource includes a first random access preamble and a first PRACH opportunity; whether the candidates for the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble set, and the target random access preamble set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble belongs to the target random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource.

[0287] As an embodiment, the first PRACH opportunity is an available PRACH opportunity in a first PRACH opportunity set, and the first PRACH opportunity set is configurable.

[0288] As an embodiment, the first PRACH opportunity group subset includes at least one PRACH opportunity group among the multiple PRACH opportunity groups, and is a true subset of the multiple PRACH opportunity groups; when the first PRACH opportunity belongs to a PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to the first random access preamble set, the first PRACH resource is not one of the candidates for the target PRACH resource; when the first PRACH opportunity does not belong to any PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to the first random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource; the first random access preamble set is configurable and mutually exclusive with the target random access preamble set.

[0289] As an embodiment, when the first PRACH opportunity belongs to one of the multiple PRACH opportunity groups and the first random access preamble code does not belong to the target random access preamble code set, the first PRACH resource is not one of the candidates for the target PRACH resource.

[0290] As an embodiment, the first node randomly selects the target PRACH resource from the candidate medium probability of the target PRACH resource.

[0291] As an embodiment, the PRACH opportunities included in any one of the candidates for the target PRACH resource are mapped to the index of the first SSB, and the random access preamble codes included in any one of the candidates for the target PRACH resource are associated with the index of the first SSB.

[0292] As an embodiment, any two PRACH opportunities in one PRACH opportunity group among the multiple PRACH opportunity groups do not overlap in the time domain.

[0293] As an embodiment, any two PRACH opportunities in one PRACH opportunity group among the multiple PRACH opportunity groups occupy the same frequency domain resources.

[0294] As an embodiment, the first PRACH configuration includes at least one field in the information element RACH-ConfigCommon.

[0295] Example 8

[0296] Embodiment 8 illustrates a structural block diagram of a processing device in a second node device of an embodiment, as shown in the attached figure. Figure 8 As shown in the attached Figure 8 In the embodiment, the second node device processing apparatus B00 includes a second transmitter B01 and a second receiver B02.

[0297] As an embodiment, the second node device B00 is a base station.

[0298] As an embodiment, the second node device B00 is a satellite device.

[0299] As an embodiment, the second node device B00 is a relay node.

[0300] As an embodiment, the second node device B00 is one of a test device, a test equipment, and a test instrument.

[0301] As an embodiment, the second transmitter B01 includes the attached Figure 4 At least one of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476.

[0302] As an embodiment, the second transmitter B01 includes the attached Figure 4 At least the first five of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476.

[0303] As an embodiment, the second transmitter B01 includes the attached Figure 4 At least the first four of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476.

[0304] As an embodiment, the second transmitter B01 includes the attached Figure 4 At least the first three of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476.

[0305] As an embodiment, the second transmitter B01 includes the attached Figure 4 At least the first two of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476.

[0306] As an embodiment, the second receiver B02 includes the attached Figure 4At least one of the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller / processor 475 and the memory 476.

[0307] As an embodiment, the second receiver B02 includes the attached Figure 4 At least the first five of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller / processor 475 and the memory 476.

[0308] As an embodiment, the second receiver B02 includes the attached Figure 4 At least the first four of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller / processor 475 and the memory 476.

[0309] As an embodiment, the second receiver B02 includes the attached Figure 4 At least the first three of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller / processor 475 and the memory 476.

[0310] As an embodiment, the second receiver B02 includes the attached Figure 4 At least the first two of the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller / processor 475 and the memory 476.

[0311] As an embodiment, the second transmitter B01 sends a first PRACH configuration, the first PRACH configuration includes configuration information of multiple PRACH opportunity groups, and any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities; the second receiver B02 receives a target random access preamble in a target PRACH opportunity; the number of PRACH opportunities occupied by the transmission of the target random access preamble is 1; wherein the transmitter of the target random access preamble determines a target PRACH resource, and the target PRACH resource includes the target random access preamble and the The target PRACH opportunity; the first PRACH resource includes a first random access preamble and a first PRACH opportunity; whether the candidates of the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble set, and the target random access preamble set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble belongs to the target random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource.

[0312] As an embodiment, the first PRACH opportunity is an available PRACH opportunity in a first PRACH opportunity set, and the first PRACH opportunity set is configurable.

[0313] As an embodiment, the first PRACH opportunity group subset includes at least one PRACH opportunity group among the multiple PRACH opportunity groups, and is a true subset of the multiple PRACH opportunity groups; when the first PRACH opportunity belongs to a PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to the first random access preamble set, the first PRACH resource is not one of the candidates for the target PRACH resource; when the first PRACH opportunity does not belong to any PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to the first random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource; the first random access preamble set is configurable and mutually exclusive with the target random access preamble set.

[0314] As an embodiment, when the first PRACH opportunity belongs to one of the multiple PRACH opportunity groups and the first random access preamble code does not belong to the target random access preamble code set, the first PRACH resource is not one of the candidates for the target PRACH resource.

[0315] As an embodiment, the transmitter of the target random access preamble code randomly selects the target PRACH resource from the candidates of the target PRACH resource with medium probability.

[0316] As an embodiment, the PRACH opportunities included in any one of the candidates for the target PRACH resource are mapped to the index of the first SSB, and the random access preamble codes included in any one of the candidates for the target PRACH resource are associated with the index of the first SSB.

[0317] As an embodiment, any two PRACH opportunities in one PRACH opportunity group among the multiple PRACH opportunity groups do not overlap in the time domain.

[0318] As an embodiment, any two PRACH opportunities in one PRACH opportunity group among the multiple PRACH opportunity groups occupy the same frequency domain resources.

[0319] As an embodiment, the first PRACH configuration includes at least one field in the information element RACH-ConfigCommon.

[0320] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The first node device in the present application includes but is not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication devices. The second node device in the present application includes but is not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication devices. The user equipment or UE or terminal in the present application includes but is not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication devices. The base station equipment or base station or network side equipment in this application includes but is not limited to macrocellular base stations, microcellular base stations, home base stations, relay base stations, eNB, gNB, transmission receiving node TRP, GNSS, relay satellite, satellite base station, aerial base station, test devices, test equipment, test instruments and other equipment.

[0321] It should be understood by those skilled in the art that the present invention may be implemented in other specified forms without departing from its core or essential features. Therefore, the embodiments disclosed herein should be considered illustrative rather than restrictive in any way. The scope of the invention is determined by the appended claims rather than the preceding description, and all modifications within their equivalent meanings and regions are considered to be included therein.

Claims

1. A first node used for wireless communication, characterized in that: include: A first receiver receives a first PRACH configuration, wherein the first PRACH configuration includes configuration information of multiple PRACH opportunity groups, and any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities; A first transmitter determines a target PRACH resource and uses a target PRACH opportunity to send a target random access preamble; the target PRACH resource includes the target random access preamble and the target PRACH opportunity, and the number of PRACH opportunities occupied by the sending of the target random access preamble is 1; Among them, the first PRACH resource includes a first random access preamble code and a first PRACH opportunity; whether the candidates for the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble code set, and the target random access preamble code set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble code belongs to the target random access preamble code set, the first PRACH resource is one of the candidates for the target PRACH resource.

2. The first node according to claim 1, characterized in that: The first PRACH opportunity is an available PRACH opportunity in a first PRACH opportunity set, and the first PRACH opportunity set is configurable.

3. The first node according to claim 1 or 2, characterized in that: The first PRACH opportunity group subset includes at least one PRACH opportunity group among the multiple PRACH opportunity groups, and is a true subset of the multiple PRACH opportunity groups; when the first PRACH opportunity belongs to a PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to a first random access preamble set, the first PRACH resource is not one of the candidates for the target PRACH resource; when the first PRACH opportunity does not belong to any PRACH opportunity group in the first PRACH opportunity group subset and the first random access preamble belongs to a first random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource; the first random access preamble set is configurable and mutually exclusive with the target random access preamble set.

4. The first node according to any one of claims 1 to 3, characterized in that: The first node randomly selects the target PRACH resource from the candidates of the target PRACH resources with medium probability.

5. The first node according to any one of claims 1 to 4, characterized in that: The PRACH opportunities included in any of the candidates for the target PRACH resource are mapped to the index of the first SSB, and the random access preamble codes included in any of the candidates for the target PRACH resource are associated with the index of the first SSB.

6. The first node according to any one of claims 1 to 5, characterized in that: Any two PRACH opportunities in one PRACH opportunity group among the multiple PRACH opportunity groups do not overlap in the time domain and occupy the same frequency domain resources.

7. The first node according to any one of claims 1 to 6, characterized in that: The first PRACH configuration includes at least one field in the information element RACH-ConfigCommon.

8. A second node used for wireless communication, characterized in that: include: A second transmitter sends a first PRACH configuration, where the first PRACH configuration includes configuration information of multiple PRACH opportunity groups, and any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities; A second receiver receives a target random access preamble in a target PRACH opportunity; the number of PRACH opportunities occupied by sending the target random access preamble is 1; Among them, the transmitting end of the target random access preamble determines the target PRACH resource, and the target PRACH resource includes the target random access preamble and the target PRACH opportunity; the first PRACH resource includes the first random access preamble and the first PRACH opportunity; whether the candidates of the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble set, and the target random access preamble set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble belongs to the target random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource.

9. A method in a first node for wireless communication, characterized in that: include: receiving a first PRACH configuration, the first PRACH configuration comprising configuration information of a plurality of PRACH opportunity groups, any one of the plurality of PRACH opportunity groups comprising a plurality of PRACH opportunities; Determine a target PRACH resource, and use a target PRACH opportunity to send a target random access preamble; the target PRACH resource includes the target random access preamble and the target PRACH opportunity, and the number of PRACH opportunities occupied by the sending of the target random access preamble is 1; Among them, the first PRACH resource includes a first random access preamble code and a first PRACH opportunity; whether the candidates for the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble code set, and the target random access preamble code set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble code belongs to the target random access preamble code set, the first PRACH resource is one of the candidates for the target PRACH resource.

10. A method in a second node for wireless communication, characterized in that: include: Sending a first PRACH configuration, where the first PRACH configuration includes configuration information of multiple PRACH opportunity groups, and any one of the multiple PRACH opportunity groups includes multiple PRACH opportunities; receiving a target random access preamble in a target PRACH opportunity; the number of PRACH opportunities occupied by sending the target random access preamble being 1; Among them, the transmitting end of the target random access preamble determines the target PRACH resource, and the target PRACH resource includes the target random access preamble and the target PRACH opportunity; the first PRACH resource includes the first random access preamble and the first PRACH opportunity; whether the candidates of the target PRACH resource include the first PRACH resource is related to the multiple PRACH opportunity groups and the target random access preamble set, and the target random access preamble set is configurable; when the first PRACH opportunity does not belong to any PRACH opportunity group among the multiple PRACH opportunity groups or the first random access preamble belongs to the target random access preamble set, the first PRACH resource is one of the candidates for the target PRACH resource.

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