WO2011157188A1 - 基于竞争的上行传输方法和设备 - Google Patents

基于竞争的上行传输方法和设备 Download PDF

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Publication number
WO2011157188A1
WO2011157188A1 PCT/CN2011/075384 CN2011075384W WO2011157188A1 WO 2011157188 A1 WO2011157188 A1 WO 2011157188A1 CN 2011075384 W CN2011075384 W CN 2011075384W WO 2011157188 A1 WO2011157188 A1 WO 2011157188A1
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WIPO (PCT)
Prior art keywords
frequency domain
contention
domain resource
uplink
grant
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PCT/CN2011/075384
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English (en)
French (fr)
Inventor
李超君
官磊
吕永霞
权威
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP11795154.1A priority Critical patent/EP2584850B1/en
Publication of WO2011157188A1 publication Critical patent/WO2011157188A1/zh
Priority to US13/718,502 priority patent/US9131502B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/002Transmission of channel access control information
    • H04W74/008Transmission of channel access control information with additional processing of random access related information at receiving side
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/08Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0866Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a dedicated channel for access

Definitions

  • the invention is entitled "Priority-based Uplink Transmission Method, Configuration Method, and Related Equipment", the entire disclosure of which is hereby incorporated by reference.
  • the embodiments of the present invention relate to a long term evolution system, and in particular, to a contention based uplink transmission method, a configuration method, and related equipment. Background technique
  • the DCI Downlink Control Information
  • eNB Evolved NodeB
  • DCI Downlink Control CHannel
  • one PDCCH is aggregated by 1, 2, 4 or 8 consecutive Control Channel Elements (CCEs), each aggregation level corresponds to one search space, and the aggregation level represents one PDCCH by several
  • CCE Control Channel Elements
  • the search space with the aggregation level of 4 is a set of all PDCCHs aggregated by the four CCEs that the UE needs to monitor.
  • Search space can be divided into Common Search Space (CSS) and User Specific Search Space (UESES).
  • a Contention Based (CB)-based uplink transmission scheme is proposed in the Enhanced Long Term Evolution Advanced (LTE-A) system, that is, at each transmission time interval (Transmission Time).
  • Lnterval, TTI the base station dynamically allocates the same uplink resource to a group of uplink synchronization users (ie, one CB user group) through contention based uplink grant (CB Grant) information.
  • the CB Grant is a type of downlink control information carried on the PDCCH, and is used to authorize the information required for the uplink transmission based on the contention. It includes allocated uplink time-frequency domain resource information and modulation coding mode (MCS, Modulation and Coding Scheme) and so on.
  • MCS modulation coding mode
  • the user of the CB user group does not need to send a Scheduling Request Indicator (SRI) in advance, and only needs to listen to the CB Grant when there is uplink data to be sent, and then directly use the authorized CB resource (for example, The allocated uplink time-frequency domain resource) is used for uplink data transmission or buffer status report (BSR, Buffer Status Report).
  • SRI Scheduling Request Indicator
  • the CB Grant has a large overhead and is prone to PDCCH scheduling blocking, that is, the CB Grant is difficult to be scheduled, and the user plane delay cannot be reduced.
  • Embodiments of the present invention provide a contention-based uplink transmission method, a configuration method, and related devices, which are reduced.
  • a content-based uplink transmission configuration method including:
  • the same one-based contention-based uplink authorization CB Grant is configured.
  • Another competitive-based uplink transmission method including:
  • a contention-based uplink grant CB Grant to determine scheduling information required for the contention-based uplink transmission, where the scheduling information includes a contention-based uplink transmission resource; using the CB Grant authorization
  • the contention-based uplink transmission resource sends uplink data or reports a buffer status report.
  • a base station including:
  • a first configuration module configured to configure a contention-based user group number and configure the same contention-based wireless network temporary identifier CB-RNTI for the plurality of contention-based user groups;
  • a second configuration module configured to configure, by the first configuration module, the same CB-RNTI Multiple competing user groups, configured with the same one-based competitive uplink authorization CB Grant.
  • a user equipment including:
  • An obtaining module configured to obtain a contention-based user group number and the same contention-based wireless network temporary identifier CB-RNTI configured for the plurality of contention-based user groups;
  • a determining module configured to monitor, according to the CB-RNTI acquired by the acquiring module, a contention-based uplink grant CB Grant, to determine scheduling information required for the contention-based uplink transmission, where the scheduling information includes a contention-based uplink transmission Resource
  • a transmission module configured to send the uplink data or the report buffer status report by using the CB Grant-authorized contention-based uplink transmission resource, where the contention-based uplink transmission resource is located in the scheduling information determined by the determining module.
  • FIG. 1 is a schematic diagram showing a basic flow of a contention-based uplink transmission configuration method according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a CB Grant according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of indicating an origin of an uplink frequency domain resource according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of another indication of an uplink frequency domain resource according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a basic flow of a base station based on a contention method according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a basic logical structure of a base station according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of another basic base structure of a base station according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a basic logical structure of another base station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a basic logical structure of another base station according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of another basic base structure of a base station according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a basic logical structure of another base station according to an embodiment of the present disclosure
  • FIG. 12 is a schematic diagram of a basic logical structure of another base station according to an embodiment of the present invention
  • FIG. 13 is a schematic diagram of another basic base structure of a base station according to an embodiment of the present invention
  • FIG. 14 is a schematic diagram of another basic base structure of a base station according to an embodiment of the present invention.
  • FIG. 15 is a schematic diagram of a basic logical structure of another base station according to an embodiment of the present disclosure.
  • 16 is a schematic diagram of a basic logical structure of another base station according to an embodiment of the present invention.
  • FIG. 17 is a schematic diagram of a basic logical structure of another base station according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic diagram of a basic logical structure of a user equipment according to an embodiment of the present invention
  • FIG. 19 is a schematic diagram of a basic logical structure of another user equipment according to an embodiment of the present invention.
  • FIG. 1 is a schematic flowchart of a contention-based uplink transmission configuration method according to an embodiment of the present invention, which mainly includes the following steps:
  • CB-RNTIs contention-based Radio Network Temporary Identifiers
  • each CB user group includes at least one CB user.
  • the CB user group is used to identify the CB user group.
  • CB-RNTI identifiers
  • the same CB-RNTI is configured for a plurality of contention-based user groups.
  • CB user number a contention-based user number
  • RRC Radio Resource Control
  • the CB Grant is used to schedule the uplink transmission based on the contention, and the information bits are mainly used to indicate the allocation. Uplink time-frequency domain resource information, and redundant bits can be used to indicate scheduling information such as MCS.
  • the same CB Grant is configured for multiple contention-based user groups having the same CB-RNTI.
  • the RNTI that identifies the Grant can be regarded as a CB-RNTI.
  • the RNTI can be regarded as a CB-RNTI.
  • the following describes the configuration method of the embodiment of the present invention by taking an execution entity such as a base station of the LTE-A system as an example.
  • the user equipment monitors information required for the CB Grant, including the CB-RNTI,
  • the CB user group number and part of the scheduling information required for CB uplink transmission can be pre-defined by high-level signaling semi-static configuration or standard.
  • the high layer signaling includes broadcast signaling, radio resource control (RRC) signaling, and media access control (MAC) signaling.
  • RRC radio resource control
  • MAC media access control
  • the information required for the current user equipment to monitor the CB Grant may be preferably notified to the user equipment by using RRC signaling. The following is a detailed description of the configuration of the information required to monitor the CB Grant.
  • the base station may configure the same CB-RNTI for multiple CB user groups. For example, there are 4 CB user groups in a cell, and the base station configures the same CB-RNTI for the 4 user groups; or, there are 7 CB user groups in one cell, and the base station configures one CB for 4 CB user groups.
  • - RNTI configure another CB-RNTI for another 3 CB user groups.
  • each CB user group includes at least one CB user.
  • each CB user needs to know the CB user group to which it belongs, and the CB user group uses the CB user group number identifier. After the CB user knows the CB user group number of the CB user group, the CB user can read the scheduling information of the corresponding scheduling domain from the CB Grant.
  • the base station can configure a CB user group number for each CB user through high layer signaling. In order to ensure reliability, the high layer signaling preferably uses RRC signaling.
  • the configuration of the CB user group number can also be in a standard predefined manner. For example, using the hash function as a transform function, the CB-RNTI configured by each CB user is used as an input parameter, and the randomly calculated value is The CB user group number of the CB user.
  • Each CB user in each CB user group is assigned a number, which is the CB user number.
  • the CB user number is used to identify the CB user in the CB user group.
  • the base station configures one CB Grant for four CB user groups.
  • For CB user group 1 it includes four CB users, which requires 2 bits to indicate the CB user number, "00" for CB user 1, and "01" for CB user 2.
  • "10" means CB user 3
  • "11" means CB user 4.
  • the user index (UE index) field is set in the CB Grant
  • the CB user actually scheduled in the CB user group that is, the actual user scheduled by the CB Grant
  • a 2-bit user indication field is set in the CB Grant, and when "00" is indicated, it indicates that the CB user 1 is scheduled.
  • the CB user number is configured for the CB user by using RRC dedicated signaling.
  • the step S101 further includes configuring the contention-based subscriber number for each of the contention-based subscribers in each of the contention-based subscriber groups via radio resource control proprietary signaling.
  • the part required for the contention-based uplink transmission may also be configured. Scheduling information.
  • the partial scheduling information required for the uplink transmission based on the contention in this embodiment mainly includes a modulation and coding mode, a power control command, a frequency domain resource size, a resource allocation mode, a frequency domain frequency hopping indication, a cyclic shift indication, and a sub-coded information.
  • a modulation and coding mode mainly includes a power control command, a frequency domain resource size, a resource allocation mode, a frequency domain frequency hopping indication, a cyclic shift indication, and a sub-coded information.
  • the contention-based uplink transmission is that a group of users compete for sending data and BSR on the same resource. Therefore, the base station cannot pre-confirm the user equipment that needs to send data, and cannot estimate the user equipment that is about to compete successfully. Therefore, the base station can follow A poor channel condition to configure the MCS and power control commands.
  • the range of values of the MCS can be used in the range defined by the 8th version of the Long Term Evolution System (LTE Rel-8), and some low-order MCSs can also be selected.
  • the range of the power control command can be in the range defined by LTE Rel-8, or it can be changed. The present invention is not limited.
  • the size of the frequency domain resource i.e., the number of allocated RBs for CB uplink transmission. Since the uplink transmission based on the contention is generally packet data transmission, a small number of resource blocks (RBs) can be allocated in the frequency domain, for example, 1 to 4 RBs.
  • the frequency domain resource size combined with the modulation coding method can determine the transmission packet size.
  • the frequency domain resource size allocated to the CB uplink transmission may be directly notified; if the current configuration is a restricted non-contiguous resource allocation manner (For details, refer to the description of S102 in the following embodiment), it is necessary to notify the number of non-contiguous frequency domain clusters (cluster) allocated to the CB uplink transmission and the size of each non-contiguous frequency domain cluster, for example, currently only configurable Two non-contiguous frequency domain clusters, each non-contiguous frequency domain cluster has a size of 2 RBs, so that the total frequency domain resource allocated to the CB uplink transmission is 4 RBs.
  • the base station cannot confirm the CB user that will transmit data on the CB uplink resource at this time, it cannot select the appropriate uplink channel resource for scheduling. If frequency hopping (FH, Frequency Hopping) is enabled, the frequency diversity gain can be obtained to improve the uplink data demodulation performance. Therefore, the base station can decide whether to enable the i3 ⁇ 4 frequency according to the current frequency usage.
  • FH Frequency Hopping
  • Demodulation reference signal for PUSCH demodulation (DMRS, DeModulation Reference Signal) has multiple sets of cyclic shift (CS, cyclic shift) values, and uses high-level signaling to perform cyclic shift indication configuration, which can enable different CB user groups to use different CSs for multiple users.
  • the MU-MIMO (Multiple User Multiple Input Multiple Output) configuration is available. Specifically, the base station configures the same time-frequency resource for multiple CB groups, and forms MU-MIMO by using the orthogonal reference signal.
  • part of the scheduling information required for the uplink transmission of the present invention may include other information required for scheduling, which is not limited in this embodiment, and details are not described herein again.
  • the scheduling information listed above is a parameter that does not need to be changed frequently or dynamically after the configuration, it can be sent to the CB user through the high-level signaling after being semi-statically configured, without being dynamically sent to the CB user through the CB Grant, thereby reducing the CB Grant. Overhead.
  • the scheduling information listed above is not limited to semi-static configuration through high-level signaling, and may also be configured in a standard predefined manner, such as a fixed modulation coding mode and a transmit power value, a fixed frequency domain resource size of 2 RB, and a unique definition.
  • the resource allocation mode, the frequency hopping is not introduced, and the CS value is fixed to a constant, etc., and the configuration manner of the present invention may not be limited.
  • scheduling information listed above may be partially configured by high-level signaling, or partially configured by a standard pre-defined, or partially configured by a CB Grant (refer to the description corresponding to S102 in the following embodiment), the present invention.
  • the configuration can be unlimited.
  • the base station configures the same CB Grant for multiple CB user groups configured to have the same CB-RNTI, that is, the base station allocates the same CB Grant and CB-RNTI to multiple CB user groups.
  • the technical solution provided by the present invention can reduce the number of CB Grants that need to be sent, as compared with the case where a CB user needs a CB Grant. For example, if one PDCCH can schedule 4 CB user groups, then 2 PDCCHs can schedule 8 CB user groups, thereby reducing the probability of scheduling block.
  • the CB Grant includes multiple scheduling domains, as shown in FIG. 2, and the CB user group number and the scheduling domain number used to identify the scheduling domain in the CB Grant correspond to each other.
  • Each scheduling field is used to indicate scheduling information of each CB user group, and mainly includes allocation of CB uplink resources (for example, occupied)
  • the scheduling information of the frequency domain resource may also include part of scheduling information, for example, one or more of a power control command, a modulation and coding mode, and a redundancy version.
  • the allocation mode allocates CB uplink frequency domain resources.
  • a frequency domain resource starting point indication method is separately proposed for continuous and non-contiguous resource allocation. It should be noted,
  • the contiguous frequency domain resource may be allocated from the uplink frequency domain resource, and only the starting point of the continuous frequency domain resource is indicated in the allocation, and the size of the contiguous frequency domain resource (ie, the allocated number of RBs for CB uplink transmission) is not indicated.
  • the scheduling information in the CB Grant scheduling domain (mainly used to allocate scheduling information of CB uplink resources) can be represented by using fewer bits, which saves the overhead required for transmitting CB Grant, and the other is CB uplink.
  • the transmitted data packets are small, and a small number of RBs can be allocated.
  • the frequency domain resource size can be semi-statically configured through high-level signaling, or can be pre-defined by standards without dynamic configuration through CB Grant.
  • the starting point of the continuous frequency domain resource is indicated, and the size of the continuous frequency domain resource is not indicated, which may specifically include three modes:
  • the frequency domain resource size of the current transport packet is 3 RBs, there are 98 available starting points on the uplink frequency domain resource. In the specific allocation, only one of the 98 available starting points needs to be indicated; The frequency domain resource size of the transport packet is 1 RB, and there are 100 available starting points on the uplink frequency domain resource. In the specific allocation, only one of the 100 available starting points needs to be indicated. For the same reason, the number of bits required to indicate the 98 and 100 available starting points is the same as the method for calculating the required number of bits required for the 99 available starting points in the foregoing embodiment, and details are not described herein.
  • the resource block is separated by an interval, and the interval indicates one of all available starting points in the uplink frequency domain resource.
  • the frequency domain resource size of the current transport packet is 2 RBs, starting with the first RB and 2 RBs (including the first RB).
  • the interval length indicates all available starting points.
  • the uplink frequency There are 49 available starting points on the domain resource.
  • the middle of the uplink frequency domain resource is indicated as one of all available starting points of the uplink frequency domain resource. For example, in a 20 MHz system bandwidth, 100 RBs are configured in the frequency domain, but only 60 RBs are indicated. Assuming that the frequency domain resource size of the current transport packet is 2 RBs, a total of 59 available on the uplink frequency domain resources are available. The starting point, when specifically assigned, only needs to indicate one of the 59 available starting points, and the number of bits required to indicate all 59 available starting points is 6 bits.
  • one of the available starting points of some uplink frequency domain resources in the uplink frequency domain resource is indicated by using a plurality of resource blocks as the interval length interval according to the frequency domain resource size of the currently configured transport packet. For example, in the 20MHz system bandwidth, 100 RBs are configured in the frequency domain, but only 60 RBs are indicated. It is assumed that the frequency domain resource size of the current transmission packet is 2 RBs, starting with the first RB and 4 RBs. (including the first RB) indicates the available starting point for the interval length, then there are 15 available starting points on the uplink frequency domain resource. In the specific allocation, only one of the 15 available starting points needs to be indicated, and all indications are indicated. The required number of bits required for the 15 available starting points is 4 bits. Resources,
  • the non-contiguous resource allocation can better utilize the existing frequency domain resources and fill the frequency domain holes.
  • the limited non-continuous frequency domain resource allocation is reflected in two aspects:
  • the number of non-contiguous frequency domain clusters is limited, and the related restrictions can be semi-statically matched by higher layer signaling. It can also be pre-defined by standard (for details, refer to the description corresponding to the foregoing embodiment S101).
  • each non-contiguous frequency domain cluster In the case of a domain resource, only the starting point of each non-contiguous frequency domain cluster is indicated, and the size of each non-contiguous frequency domain cluster is not indicated. The reason is that the size of each non-contiguous frequency domain cluster can be notified by higher layer signaling or standard. Definition (refer to the description corresponding to the foregoing embodiment S101 for details).
  • the starting point method of indicating only the continuous frequency domain resource is similar, that is, according to the frequency of the currently configured transmission packet.
  • the size of the domain resource indicating one of the available starting points in the uplink frequency domain resource; or the length of the frequency domain resource of the currently configured transport packet, with the interval of the resource block as the interval, and the interval indicating one of all available starting points in the uplink frequency domain resource; Or, according to the frequency domain resource size of the currently configured transport packet, indicating one of all available starting points of the uplink frequency domain resource in the uplink frequency domain resource; or according to the frequency domain resource size of the currently configured transport packet, using a plurality of resource blocks as the interval length
  • the interval indicates one of all available starting points of some uplink frequency domain resources in the uplink frequency domain resource.
  • each CB Grant includes multiple scheduling domains, and information bits of each scheduling domain mainly indicate scheduling information for allocating CB uplink frequency domain resources, and redundant bits are used to indicate other scheduling.
  • Information for example, one or more of a power control command, a modulation and coding method, a redundancy version (RV, Redundancy Version), frequency domain frequency modulation information, and a cyclic shift indication.
  • the existing definition method can be multiplexed and indicated by 1 bit or 2 bits of information; and the MCS of the LTE Rel-8 combined with the RV requires 5 bits for indication, and the overhead is large.
  • a 1-bit redundant bit may be used to indicate a Channel State Information Request (CSIR), that is, whether aperiodic CSI is transmitted on the PUSCH; a 1-bit redundant bit is used to indicate a resource allocation type, that is, a dedicated Is a continuous or non-contiguous resource allocation; Precoding information and number of layers are indicated by partially redundant bits.
  • CTR Channel State Information Request
  • the scheduling information such as the power control command, the MCS and the RV, and the precoding information does not need to be dynamically and accurately indicated.
  • the configuration used in the CB Grant is only an optional solution, and may also be through a high-level letter.
  • the semi-static configuration or the standard is pre-defined. For details, refer to the related parts of the previous embodiment, and details are not described herein.
  • a user indication field is set in the CB Grant, and the user indication field is used to indicate the CB user scheduled in the CB user group.
  • the CB Grant sets a 2-bit user indication field in each scheduling domain. For the scheduling domain 1, when "00" is indicated, it indicates that the CB user 1 in the CB user group 1 is scheduled, in the scheduling domain 1. All scheduling information is used to indicate the uplink transmission of CB User 1.
  • the CB user number and the user indication field are configured, the currently scheduled user can be specifically indicated. The base station does not need to determine which user the uplink transmission data comes from.
  • the number of bits of the CB Grant provided by the embodiment of the present invention may be designed as the downlink control as much as possible in order to control the number of bits of the PDCCH blind detection (BD, Blind Decoding) as much as possible without increasing the number of bits of the new downlink control information (ie, the DCI load size).
  • the information format 3/3A or format 1C has the same number of information bits, for example, is designed to be the same as the number of information bits of the Long Term Evolution System (LTE Rel-8) downlink control information format 3/3A or format 1C.
  • the DCI of the LTE Rel-8 in the common search space includes DCI format 3/3 A, DCI format 0/1A and DCI format 1C, where DCI format 3/3A and DCI format 0/1A have the same information bits, which is much larger than DCI format 1C.
  • the CB Grant is limited to being carried in the common search space, it is considered that one CB Grant can schedule multiple CB user groups.
  • the number of information bits of the CB Grant is designed and DCI format 3/3A-like.
  • the most reasonable information overhead is designed.
  • Different CB Grants can also be designed to different lengths. For example, currently, six CB user groups need to be scheduled, and four CB user groups use the same CB Grant.
  • the number of bits is the same as DCI format 3/3A, and the other two CB users use another CB Grant with the same number of information bits as DCI format 1C.
  • the number of information bits of DCI format 3/3A is 44 bits.
  • the number of information bits of the CB Grant provided by the embodiment of the present invention is designed to be 44 bits. Among them, 16-bit Cyclic Redundancy Check (CRC) is removed, and 28 bits are available for scheduling CB uplink transmission.
  • CB uplink frequency domain resource allocation method 1 continuous frequency domain resource allocation, indicating only one of all available starting points in the uplink frequency domain resource, does not indicate the size of the frequency domain resource
  • each CB uplink transmission needs about 7 bits.
  • each CB Grant can schedule 4 CB user groups.
  • the size of each non-contiguous frequency domain cluster is limited to 1 RB, indicating only the starting point of each non-contiguous frequency domain cluster, each CB uplink transmission needs about 14 bits, so each CB Grant can be scheduled 2 CB user group.
  • the resource block is used as the interval length, the interval indicates one of all available starting points in the uplink frequency domain resource, or indicates one of the available starting points of some uplink frequency domain resources in the uplink frequency domain resource, or multiple resource blocks.
  • the interval indicates one of the available starting points of some uplink frequency domain resources in the uplink frequency domain resource, and some bits (ie, redundant bits) may be reserved for indicating other scheduling information, such as a power control command and an MCS. , can also be used as a virtual CRC (virtual CRC) to reduce the probability of CRC false alarms.
  • some bits ie, redundant bits
  • the interval can also be used as a virtual CRC (virtual CRC) to reduce the probability of CRC false alarms.
  • the size of the common search space may be expanded due to the limited capacity of the existing common search space, and the specific extension may be standard pre-defined or passed through the upper layer. Signaling semi-static configuration. It should be noted that if other downlink control information similar to the CB Grant needs to be transmitted in the public search space, the search space may be expanded by the reason provided by the embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a basic flow of a contention-based uplink transmission method according to an embodiment of the present invention.
  • the execution subject of the transmission method may be, but is not limited to, the LTE-A system user equipment, and the main execution steps include:
  • the user equipment acquires its CB-RNTI by receiving high layer signaling.
  • the UE obtains the CB user group number by receiving the high-level signaling, or determines the CB user group number to which it belongs according to a standard pre-defined method.
  • the user equipment can also obtain its CB user number by receiving RRC proprietary signaling.
  • RRC proprietary signaling For part of scheduling information required for contention-based uplink transmission, such as one or more of MCS, power control command, frequency domain resource size, frequency resource allocation mode, frequency domain frequency hopping indication, and cyclic shift indication,
  • the UE may also obtain by receiving high layer signaling or by predefining according to standards.
  • S502 Listen to the CB Grant according to the obtained CB-RNTI, and determine the scheduling information required for the CB uplink transmission, where the scheduling information mainly includes the frequency domain resource of the CB uplink transmission.
  • the CB Grant is used to schedule the uplink transmission based on the contention, and the bit information is mainly used to indicate the allocated uplink time-frequency domain resource information.
  • the bit information of the CB Grant further includes a user indication field, where the user indication field is used to indicate the CB user scheduled in the CB user group. Redundant bits are used to indicate some other scheduling information, such as one or more of power control commands, MCS, RV, frequency domain FM information, and cyclic shift indication.
  • other scheduling information used by the redundant bits for indicating includes a power control command, an MCS, an RV, a frequency domain frequency modulation information, a cyclic shift indication, a channel state information request, a resource allocation type, and a precoding.
  • a power control command an MCS, an RV, a frequency domain frequency modulation information, a cyclic shift indication, a channel state information request, a resource allocation type, and a precoding.
  • the CB Grant is dynamically transmitted by the base station, the user plane delay can be reduced and the frequency domain resources can be flexibly allocated.
  • the CB Grant may be monitored to determine the available CB uplink transmission resources and some other scheduling information, specifically, according to the acquired CB- The RNTI, the CB Grant matching the CB-RNTI is detected; the scheduling information indicated by the scheduling domain corresponding to the CB user group number is read according to the obtained CB user group number; and the available scheduling information is determined according to the read scheduling information.
  • CB uplink transmission resources These scheduling information can also be read when other scheduling information is configured in the CB Grant, for example, when modulation coding, power control commands, and redundancy versions are configured.
  • the UE reads the scheduling information of the third scheduling domain in the CB Grant according to the currently acquired CB user group number 3, and further confirms the currently available CB uplink transmission resource and the data when the data is transmitted according to the read scheduling domain information.
  • Configuration information used when other scheduling information is configured in the CB Grant).
  • the UE determines whether it is currently scheduled by the base station according to the bit value in the user indication field, that is, the user equipment needs to read the CB according to the acquired CB user group number.
  • Scheduling information indicated by the CB Grant scheduling domain corresponding to the user group number, according to The available contention-based uplink transmission resource is determined by receiving the CB user number obtained by the RRC dedicated signaling and the read scheduling information (user indication field).
  • the CB Grant sets a 2-bit user indication field in each scheduling domain. For the scheduling domain 1, when "00" is indicated, it indicates that the CB user 1 in the CB user group 1 is scheduled. At this time, its scheduling All scheduling information in domain 1 is used to indicate the uplink transmission of CB user 1. At this time, the CB users 2, 3, and 4 know that they are not scheduled by interpreting the user indication field, and therefore do not perform uplink transmission.
  • the functional module included in the base station may be a software module, a hardware module or a combination of software and hardware, and includes a first configuration module 601 and a second configuration module 602, where:
  • the first configuration module 601 is configured to configure the contention-based user group number and configure the same contention-based wireless network temporary identifier CB-RNTI for the plurality of contention-based user groups.
  • the first configuration module 601 is configured to configure a CB-RNTI and a CB user group number. Further, the first configuration module 601 may be configured to configure part of scheduling information required for the uplink transmission based on the contention, for example, a modulation and coding mode, a power control command, and a frequency. One or more of the domain resource size, the resource allocation mode, the frequency domain hopping indication, the cyclic shift indication, the precoding information, and the number of layers. For the specific configuration method, refer to the foregoing method embodiment.
  • the first configuration module 601 can also configure a number, that is, a CB user number, for each CB user of each CB user group by using radio resource control proprietary signaling, where the CB user number is used to identify the CB user group. CB users.
  • the second configuration module 602 is configured to configure, by the first configuration module 601, a plurality of CB user groups having the same CB-RNTI, and configure the same CB Grant. Specifically, the second configuration module 602 is configured based on the high layer signaling.
  • the same CB Grant configured by the same CB-RNTL configured for multiple contention-based user groups includes a plurality of scheduling domains, where the scheduling domain number and the first configuration are used to identify the scheduling domain.
  • the CB Grant is used to schedule the uplink transmission based on the contention, and the information bits are used to indicate the allocated uplink time-frequency domain resource information.
  • the base station is configured with a CB user number
  • the CB A user indication field is set in the Grant, and the user indication field is used to indicate the CB user scheduled in the CB user group.
  • Redundant bits may be used to indicate other scheduling information, such as power control commands, MCS, RV, frequency domain hopping information, cyclic shift indication, channel state information request, resource allocation type, precoding information, and number of layers.
  • MCS power control commands
  • RV frequency domain hopping information
  • cyclic shift indication channel state information request
  • resource allocation type resource allocation type
  • precoding information and number of layers.
  • the second configuration module 602 configures the same CB for multiple CB user groups having the same CB-RNTI
  • the designed frequency domain resource starting point indication method can save the overhead of transmitting the CB Grant, that is, the second configuration module 602 can include the continuous frequency domain resource allocation sub-module 701 and/or the discontinuous frequency domain resource allocation sub-module 801, such as As shown in FIG. 7, FIG. 8 and FIG. 9, wherein the continuous frequency domain resource allocation sub-module allocates only the starting point of the continuous frequency domain resource, and the discontinuous frequency domain resource allocation sub-module 801 uses the non-contiguous continuous frequency domain. The number of clusters, and only indicates the starting point of the non-contiguous frequency domain cluster.
  • the continuous frequency domain resource allocation sub-module 701 illustrated in FIG. 7 or FIG. 9 may further include a first indication unit 1001, a second indication unit 1101, a third indication unit 1201 or a fourth indication unit 1301, as shown in FIG. 10 and FIG. 11.
  • the first indication unit 1001 is configured to indicate one of all available starting points in the uplink frequency domain resource according to the frequency domain resource size of the currently configured transmission packet;
  • a second indicating unit 1101 configured to indicate, according to a frequency domain resource size of the currently configured transport packet, a number of resource blocks as an interval length interval indicating one of all available starting points in the uplink frequency domain resource;
  • the third indication unit 1201 is configured to indicate, according to the frequency domain resource size of the currently configured transmission packet, one of all available starting points of the uplink frequency domain resource in the uplink frequency domain resource;
  • the fourth indication unit 1301 is configured to indicate, according to the frequency domain resource size of the currently configured transmission packet, a number of resource blocks as an interval length interval indicating one of all available starting points of the uplink frequency domain resource in the uplink frequency domain resource.
  • the discontinuous frequency domain resource allocation sub-module 801 illustrated in FIG. 8 or FIG. 9 may further include a fifth indication unit 1401, a sixth indication unit 1501, a seventh indication unit 1601 or an eighth indication unit 1701,
  • a sixth indication unit 1501 configured to indicate, according to a frequency domain resource size of the currently configured transmission packet, a number of resource blocks as an interval length interval indicating one of all available starting points in the uplink frequency domain resource;
  • the seventh indication unit 1601 is configured to indicate, according to the frequency domain resource size of the currently configured transmission packet, one of all available starting points of the uplink frequency domain resource in the uplink frequency domain resource;
  • the eighth indication unit 1701 is configured to indicate, according to the frequency domain resource size of the currently configured transmission packet, a number of resource blocks as an interval length interval indicating one of all available starting points of the uplink frequency domain resource in the uplink frequency domain resource.
  • the first configuration module 601 configures the information required for the user equipment to monitor the CB Grant in a static or semi-static manner
  • the second configuration module 602 is a plurality of CB user groups having the same CB-RNTI.
  • the same CB Grant is configured. Therefore, the present invention does not need to send a CB Grant for each CB user group, which reduces the resource overhead for transmitting the CB Grant, thereby reducing the probability of occurrence of scheduling block.
  • the function module included in the user equipment may be a software module, a hardware module or a combination of software and hardware, and includes an obtaining module 1801, a determining module 1802, and a transmitting module 1803, where:
  • the obtaining module 1801 is configured to obtain the contention-based user group number and the same contention-based wireless network temporary identifier CB-RNTI configured for the plurality of contention-based user groups.
  • the information includes a CB-RNTI and a CB user group number, and further, may further include partial scheduling information required for transmitting the uplink transmission based on the contention, for example, a modulation and coding mode, a power control command, and a frequency domain.
  • partial scheduling information required for transmitting the uplink transmission based on the contention for example, a modulation and coding mode, a power control command, and a frequency domain.
  • the specific configuration method may refer to the foregoing method embodiment.
  • the obtaining module 1801 can also be used to obtain a CB user number.
  • the determining module 1802 is configured to: according to the CB-RNTI acquired by the obtaining module 1501, monitor the CB Grant to determine scheduling information required for CB uplink transmission, where the scheduling information mainly includes a frequency domain of CB uplink transmission. Resources.
  • the CB Grant includes a plurality of scheduling domains, each of which is used to indicate scheduling information of a contention-based user group, and the CB user group number corresponds to a scheduling domain number in the CB Grant.
  • the CB Grant is used to schedule the uplink transmission based on the contention, and the information bits are mainly used to indicate the allocated uplink time-frequency domain resource information, and the redundancy bits are also used to indicate other scheduling information, for example, the power control command.
  • the information bits are mainly used to indicate the allocated uplink time-frequency domain resource information, and the redundancy bits are also used to indicate other scheduling information, for example, the power control command.
  • One or more of MCS, RV, frequency domain FM information, and cyclic shift indication are examples of MCS, RV, frequency domain FM information, and cyclic shift indication.
  • the transmitting module 1803 is configured to send the uplink data or report the buffer status report by using the contention-based uplink transmission resource determined by the determining module 1802 of the CB Grant authorization.
  • the determining module 1802 illustrated in FIG. 18 may further include a monitoring unit 1901, a reading unit 1902, and a determining unit 1903.
  • the basic logical structure diagram of another user equipment according to the embodiment of the present invention is shown in FIG.
  • the monitoring unit 1901 is configured to monitor, according to the CB-RNTI acquired by the obtaining module 1801, a CB Grant that matches the CB-RNTI;
  • the reading unit 1902 is configured to read scheduling information indicated by the scheduling domain corresponding to the CB user group number according to the CB user group number acquired by the acquiring module 1801.
  • the determining unit 1903 is configured to determine, according to the scheduling information read by the reading unit 1902, the available CB uplink transmission resources.
  • the determining unit 1903 is configured to determine, according to the obtained CB user number and the read scheduling information, the available contention-based uplink transmission resources.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: Read only memory (ROM, Read Only Memory), random access memory (RAM), disk or optical disk.

Description

基于竞争的上行传输方法和设备 本申请要求于 2010年 06月 18日提交中国专利局、 申请号为 201010213309.0
、 发明名称为 "基于竟争的上行传输方法、 配置方法和相关设备" 的中国专利 申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明实施例涉及长期演进系统, 尤其涉及基于竟争的上行传输方法、 配 置方法和相关设备。 背景技术
在长期演进 ( Long Term Evolution , LTE ) 系统中, 用户设备 ( User Equipment , UE )接收或发送业务数据之前, 需要获知演进基站 ( Evolved NodeB , eNB ) 配置给该用户设备的下行控制信息 ( Downlink Control Information, DCI ),该 DCI通过物理层下行控制信道( Physical Downlink Control CHannel, PDCCH )承载。 一般地, 一个 PDCCH由 1、 2、 4或者 8个连续控 制信道单元 (Control Channel Element, CCE ) 聚合而成, 每一个聚合级别 ( aggregation level )对应一个搜索空间, 聚合级别表示一个 PDCCH 由几个 CCE聚合, 搜索空间即为 UE待检测的 PDCCH集合, 例如, 聚合级别为 4的 搜索空间,是 UE需要监测的所有由 4个 CCE聚合而成的 PDCCH的集合。搜 索空间可分为公共搜索空间( Common Search Space, CSS )和用户设备特定搜 索空间 (UE Specific Search Space, UESSS )„
为了减少用户面时延,在增强型长期演进( Long Term Evolution Advanced, LTE-A ) 系统中提出了基于竟争(Contention Based, CB ) 的上行传输方案, 即在每个传输时间间隔(Transmission Time lnterval, TTI ),基站通过基于竟争 的上行授权 ( Contention Based uplink Grant, CB Grant )信息动态地为一组上 行同步用户 (即一个 CB用户组)分配相同的上行资源。 所谓 CB Grant, 是承 载在 PDCCH上的一种下行控制信息,用于授权基于竟争的上行传输所需信息, 包括分配的上行时频域资源信息和调制编码方式 (MCS , Modulation and Coding Scheme )等等。 在 CB上行传输方案中, CB用户组的用户无需提前发 送调度请求指示(SRI, Scheduling Request Indicator ), 只需在有上行数据需要 发送时, 监听 CB Grant, 然后直接使用授权的 CB资源(例如, 分配的上行时 频域资源)进行上行数据的传输或緩存状态 ^艮告 ( BSR, Buffer Status Report ) 的上才艮。
在上述提供的 CB上行传输方法中, 由于 CB Grant开销较大, 而且易产 生 PDCCH调度阻滞(blocking ), 即 CB Grant很难被调度, 无法减少用户面 延时。
发明内容
本发明实施例提供基于竟争的上行传输方法、 配置方法和相关设备, 减少
CB Grant的开销。
一方面, 提供了一种基于竟争的上行传输配置方法, 包括:
配置基于竟争的用户组号和为多个基于竟争的用户组配置相同的基于竟 争的无线网络临时标识 CB-RNTI;
对具有相同所述 CB-RNTI的多个基于竟争的用户组,配置相同的一个基于 竟争的上行授权 CB Grant。
一方面, 提供了另一种基于竟争的上行传输方法, 包括:
获取基于竟争的用户组号和为多个基于竟争的用户组配置的相同的基于 竟争的无线网络临时标识 CB-RNTI;
根据所述 CB-RNTI,监听基于竟争的上行授权 CB Grant以确定基于竟争的 上行传输所需的调度信息, 所述调度信息包括基于竟争的上行传输资源; 使用 所述 CB Grant授权的所述基于竟争的上行传输资源发送上行数据或上报緩存 状态报告。
一方面, 提供了一种基站, 包括:
第一配置模块,用于配置基于竟争的用户组号和为多个基于竟争的用户组 配置相同的基于竟争的无线网络临时标识 CB-RNTI;
第二配置模块, 用于对所述第一配置模块配置的具有相同所述 CB-RNTI 的多个基于竟争的用户组, 配置相同的一个基于竟争的上行授权 CB Grant。 一方面, 提供了一种用户设备, 包括:
获取模块,用于获取基于竟争的用户组号和为多个基于竟争的用户组配置 的相同的基于竟争的无线网络临时标识 CB-RNTI;
确定模块, 用于根据所述获取模块获取的 CB-RNTI,监听基于竟争的上行 授权 CB Grant以确定基于竟争的上行传输所需的调度信息,所述调度信息包括 基于竟争的上行传输资源;
传输模块,用于使用所述 CB Grant授权的基于竟争的上行传输资源发送上 行数据或上报緩存状态报告,所述基于竟争的上行传输资源位于所述确定模块 确定的调度信息中。
本发明通过将多个 CB用户组配置相同的 CB-RNTI,以及基于竟争的上行 传输所需的部分调度信息可以通过高层信令配置,从而仅需为多个基于竟争的 用户组配置同一个 CB Grant, 因此, 本发明无需为每个 CB用户组都发送 CB Grant,减小了用于发送 CB Grant的资源开销,从而降低出现调度阻滞的概率。 附图说明 图 1是本发明实施例提供的一种基于竟争的上行传输配置方法基本流程示 意图;
图 2是本发明实施例提供的一种 CB Grant结构示意图;
图 3是本发明实施例提供的一种指示上行频域资源起点的示意图; 图 4是本发明实施例提供的另一种指示上行频域资源的示意图;
图 5本发明实施例提供的一种基于竟争的上行传输方法基本流程示意图; 图 6是本发明实施例提供的一种基站基本逻辑结构示意图;
图 7是本发明实施例提供的另一种基站基本逻辑结构示意图;
图 8是本发明实施例提供的另一种基站基本逻辑结构示意图;
图 9是本发明实施例提供的另一种基站基本逻辑结构示意图;
图 10是本发明实施例提供的另一种基站基本逻辑结构示意图;
图 11是本发明实施例提供的另一种基站基本逻辑结构示意图; 图 12是本发明实施例提供的另一种基站基本逻辑结构示意图; 图 13是本发明实施例提供的另一种基站基本逻辑结构示意图;
图 14是本发明实施例提供的另一种基站基本逻辑结构示意图;
图 15是本发明实施例提供的另一种基站基本逻辑结构示意图;
图 16是本发明实施例提供的另一种基站基本逻辑结构示意图;
图 17是本发明实施例提供的另一种基站基本逻辑结构示意图;
图 18是本发明实施例提供的一种用户设备基本逻辑结构示意图; 图 19是本发明实施例提供的另一种用户设备基本逻辑结构示意图。
具体实施方式 请参阅图 1 , 本发明实施例提供的一种基于竟争的上行传输配置方法基本 流程示意图, 主要包括步骤:
5101 ,配置基于竟争的用户组号和为多个基于竟争的用户组配置相同的基 于竟争的无线网络临时标识 (CB-RNTI , Contention Based Radio Network Temporary Identifiers )。
实际组网环境中, 一个小区经常配置多个 CB用户组, 而每个 CB用户组至 少包括一个 CB用户。 为了使每个 CB用户获知其所属 CB用户组, 以便后续从 CB Grant中读取对应调度域的调度信息, 在本发明实施例中, 釆用 CB用户组 号对 CB用户组进行标识。
一个系统中会存在多个 CB用户或多个 CB用户组, 因此可能需要多个 CB
Grant。 为了区分不同的 CB Grant, 需要配置不同的标识, 即 CB-RNTI。 在本 发明实施例中, 为多个基于竟争的用户组配置相同的 CB-RNTI。
进一步地, 还可以通过无线资源控制 (RRC, Radio Resource Control ) 专 有信令为每个 CB用户组的每个 CB用户配置基于竟争的用户号(以下简称 "CB 用户号"), 该 CB用户号用于标识 CB用户组的 CB用户。
5102,对具有相同 CB-RNTI的多个基于竟争的用户组, 配置相同的一个基 于竟争的上行授权 CB Grant。
CB Grant用于调度基于竟争的上行传输,其信息比特主要用于指示分配的 上行时频域资源信息, 而冗余比特可用于指示 MCS等调度信息。在本发明实施 例中,并不是为每一个 CB用户组配置一个 CB Grant,而是为具有相同 CB-RNTI 的多个基于竟争的用户组, 配置同一个 CB Grant。
需要说明的是,只要是为多个用户或用户组分配相同的一个用于调度上行 传输的 Grant, 即使基站釆用的调度方法是非竟争的 (即在 Grant中明确指示当 前调度的用户或用户组), 所述多个用户或用户组都可以看作是 CB用户或 CB 用户组, 所述 Grant都可以看作是 CB Grant, 标识该 Grant的 RNTI都可以看作是 CB-RNTI。 因此, 本发明所有实施例的方法都适用于所述多个用户或用户组。
从上述本发明实施例可知, 由于多个 CB用户组可以配置相同的 CB-RNTI, 仅需为多个基于竟争的用户组配置同一个 CB Grant, 因此, 本发明无需为每个 CB用户组都发送 CB Grant,减小了用于发送 CB Grant的资源开销,从而降低出 现调度阻滞的概率。
下面以 LTE - A系统的基站等执行实体为例, 说明本发明实施例的配置方 法。
在本发明实施例中,用户设备监测 CB Grant所需的信息,其包括 CB-RNTI,
CB用户组号和 CB上行传输所需的部分调度信息, 这些信息可以通过高层信令 半静态配置或者标准预先定义。 本实施例中, 高层信令包括广播信令、 无线资 源控制 (RRC, Radio Resource Control )信令和媒体接入控制(MAC, Media Access Control)信令。 为了保证可靠性, 在本发明实施例中, 可优选釆用 RRC 信令将当前用户设备监测 CB Grant所需的信息通知至用户设备。以下具体说明 监测 CB Grant所需信息的配置。
配置 CB-RNTI的实施例:
一个系统中会存在多个 CB用户或多个 CB用户组,因此需要多个 CB Grant, 为了区分不同的 CB Grant, 需要配置不同的标识, 即 CB-RNTI。 在本发明实施 例中, 基站可以为多个 CB用户组配置相同的 CB-RNTI。 例如, 一个小区中有 4 个 CB用户组, 基站为这 4个用户组配置相同的一个 CB-RNTI; 或者, 一个小区 中有 7个 CB用户组, 基站为其中 4个 CB用户组配置一个 CB-RNTI, 为另外 3个 CB用户组配置另一个 CB-RNTI。 配置 CB用户组号实施例:
在实际组网环境中, 一个小区经常配置多个 CB用户组, 而每个 CB用户组 至少包括一个 CB用户。 在本发明实施例中, 每个 CB用户需要获知其所属 CB 用户组, CB用户组釆用 CB用户组号标识。 当 CB用户获知其所属 CB用户组的 CB用户组号后, 便可以从 CB Grant中读取对应调度域的调度信息。 在本实施 例中, 基站可通过高层信令为每一个 CB用户配置一个 CB用户组号。 为了保证 可靠性, 该高层信令优选釆用 RRC信令。
CB用户组号的配置也可以釆用标准预定义方式, 例如, 釆用哈希(Hash ) 函数作为变换函数, 以每个 CB用户被配置的 CB-RNTI作为输入参数, 随机计 算所得值即为该 CB用户的 CB用户组号。
如下为配置 CB用户号的另一个实施例:
给每个 CB用户组里的每个 CB用户配置一个编号, 即 CB用户号。 该 CB用 户号用于标识该 CB用户组里的 CB用户。 例如, 基站给 4个 CB用户组配置一个 CB Grant,对于 CB用户组 1 ,其包括 4个 CB用户, 需要 2bit指示 CB用户号, "00" 表示 CB用户 1 , "01" 表示 CB用户 2, "10 " 表示 CB用户 3 , "11" 表示 CB用户 4。 当 CB Grant里设置了用户指示 ( UE index )域时, 可以指示该 CB用户组中 实际调度的 CB用户, 即 CB Grant调度的实际用户。 例如, CB Grant里设置了 2 比特的用户指示域, 当指示 "00"时,表示调度了 CB用户 1。优选地, 釆用 RRC 专有信令给 CB用户配置 CB用户号。
当基站配置 CB用户号时, S101步骤还包括通过无线资源控制专有信令为 每个基于竟争的用户组中的每个基于竟争的用户配置基于竟争的用户号。
配置基于竟争的上行传输所需的部分调度信息的实施例:
在配置基于竟争的用户组号和为多个基于竟争的用户组配置相同的基于 竟争的无线网络临时标识 CB-RNTI之后或同时,还可以配置基于竟争的上行传 输所需的部分调度信息。
本实施例中基于竟争的上行传输所需的部分调度信息主要包括调制编码 方式、 功控命令、 频域资源大小、 资源分配方式、 频域跳频指示、 循环移位指 示、 子贞编码信息和层数 ( Precoding information and number of layers ) 中的一种 或多种, 伴细说明如下:
( 1 )、 关于调制编码方式和功控命令的配置。基于竟争的上行传输是一组 用户在相同的资源上竟争发送数据和 BSR, 因此基站无法预先确认需要发送数 据的用户设备, 而且也无法估计即将竟争成功的用户设备, 所以基站可以按照 一个较差的信道条件来配置 MCS和功控命令。 MCS的值域范围可以沿用长期 演进系统第 8版本 ( LTE Rel-8 )定义的范围,也可以从中选取一些低阶的 MCS。 功控命令的值域范围可以沿用 LTE Rel-8定义的范围, 也可以有所变化, 本发 明不做限制。
( 2 )、 关于频域资源大小 (即分配的用于 CB上行传输的 RB个数)的配置。 由于基于竟争的上行传输一般为小包数据传输,所以一般在频域上分配少量资 源块(RB, Resource Block )即可, 例如, 1至 4个 RB。 频域资源大小结合调制 编码方式可以确定出传输包大小。如果当前配置为连续频域资源分配(具体参 阅下文对实施例中 S102对应的说明),直接通知分配给 CB上行传输的频域资源 大小即可; 如果当前配置为受限的非连续资源分配方式(具体参阅下文对实施 例中 S102对应的说明), 需要通知分配给 CB上行传输的非连续频域簇 ( cluster ) 的个数和每个非连续频域簇的大小, 例如, 当前仅能配置 2个非连续频域簇, 每个非连续频域簇的大小为 2RB, 这样总共分配给 CB上行传输的频域资源大 小为 4RB。
( 3 )、 关于资源分配方式的配置。 当 CB上行资源分配存在多种方式时, 可以通过高层信令进行半静态配置。例如, 系统中存在 2种频域资源分配方式, 连续频域资源分配方式和非连续频域资源分配方式,需要高层信令配置当前的 分配方式。
( 4 )、 关于频域跳频指示的配置。 由于基站此时还不能确认即将在 CB上 行资源上传输数据的 CB用户, 因此, 无法为其选取合适的上行信道资源进行 调度。 如果开启频域跳频(FH, Frequency Hopping ), 可以获得频率分集增益, 提高上行数据解调性能。 因此, 基站可以根据当前频语使用情况, 决定是否开 启 i¾频。
( 5 )、 关于循环移位指示的配置。 用于 PUSCH解调的解调参考信号 ( DMRS, DeModulation Reference Signal )有多组循环移位 ( CS, cyclic shift ) 值, 釆用高层信令进行循环移位指示的配置, 可以使不同 CB用户组釆用不同 的 CS , 为多用户多输入多输出 ( MU-MIMO , Multiple User Multiple Input Multiple Output )配置提供可能。 具体地, 基站为多个 CB组配置相同的时频资 源, 利用正交参考信号形成 MU-MIMO。
进一步,本发明基于竟争的上行传输所需的部分调度信息可以包括其它一 些调度所需的信息, 本实施例不做限制, 在此不再赘述。
由于上述所列调度信息属于配置后无需频繁或动态变化的参数,可以半静 态配置后, 通过高层信令发送给 CB用户, 而无需通过 CB Grant动态地发送给 CB用户, 从而降低了 CB Grant的开销。
上述所列调度信息并不局限于通过高层信令半静态配置,也可以釆用标准 预定义的方式配置, 例如固定调制编码方式和发射功率值、 固定频域资源大小 为 2RB、定义唯一的一种资源分配方式、不引入跳频以及 CS值固定为一常数等 等, 本发明配置方式可以不限制。
需要进一步说明的是, 上述所列调度信息可以部分通过高层信令配置, 或 者部分通过标准预先定义配置, 或者部分通过 CB Grant进行配置(具体参阅下 文对实施例中 S102对应的说明 ), 本发明配置方式可以不限制。
以下对具有相同 CB-RNTI的多个 CB用户组配置相同的一个 CB Grant作进 一步说明。
在本实施例中, 基站为被配置成具有相同 CB-RNTI的多个 CB用户组配置 相同的一个 CB Grant, 即, 基站为多个 CB用户组分配相同的一个 CB Grant和 CB-RNTI。
釆用本发明提供的技术方案, 和一个 CB用户需要一个 CB Grant的情况相 比, 可以减少需要发送的 CB Grant的个数。 例如, 一个 PDCCH可以调度 4个 CB 用户组,则 2个 PDCCH可以调度 8个 CB用户组,从而降低出现调度阻滞的概率。
在本发明实施例中, CB Grant包括多个调度域, 如附图 2所示, 而 CB用户 组号和 CB Grant中用于标识调度域的调度域号——对应。每个调度域分别用于 指示每个 CB用户组的调度信息, 主要包括用于分配 CB上行资源 (例如, 所占 的频域资源) 的调度信息, 或者也可以包括部分调度信息, 例如, 功控命令、 调制编码方式和冗余版本等中的一种或多种。 配方式分配 CB上行频域资源。 但为了降低资源分配开销, 在本发明实施例中, 针对连续和非连续资源分配,分别提出了频域资源起点指示法。需要说明的是,
可以从上行频域资源中分配连续频域资源,在分配时只指示连续频域资源的起 点, 而不指示该连续频域资源的大小 (即分配的用于 CB上行传输的 RB个数), 一方面在于釆用较少的比特就可以表示 CB Grant调度域中的调度信息(主要用 于分配 CB上行资源的调度信息), 节省了传输 CB Grant时所需的开销, 另一方 面在于 CB上行传输的数据包较小, 分配少量 RB即可, 频域资源大小可以通过 高层信令半静态配置, 或者也可以标准预先定义, 而无需通过 CB Grant动态配 置。
在本发明实施例中,仅指示连续频域资源的起点, 而不指示该连续频域资 源的大小, 具体可以包括三种方式:
方式一,根据当前配置的传输包的频域资源大小,指示上行频域资源中所 有可用起点之一。 例如, 20MHz系统带宽(即上行频域资源)下, 频域配置了 100个 RB, 假设当前配置的基于竟争的传输包的频域资源大小为 2个 RB, 则该 上行频域资源上共有 99个可用起点, 如附图 3所示, 在具体分配时, 只需要指 示这 99个可用起点之一, 而指示全部 99种可用起点所需比特数开销为 ceil(log2 (99)) = 7bit , 此处, ceil(*)表示向上取整。 同理, 假设当前的传输包的频 域资源大小为 3个 RB, 则该上行频域资源上共有 98个可用的起点, 在具体分配 时, 只需要指示这 98个可用起点之一; 假设当前的传输包的频域资源大小为 1 个 RB, 则该上行频域资源上共有 100个可用的起点, 在具体分配时, 只需要指 示这 100个可用起点之一。 同理, 指示这 98和 100个可用起点所需比特数开销, 与前述实施例指示 99个可用起点所需比特数开销计算方式相同, 不再赘述。 方式二,根据当前配置的传输包的频域资源大小, 以若干资源块为间隔长 度, 间隔指示上行频域资源中所有可用起点之一。 例如, 20MHz系统带宽下, 频域配置了 100个 RB, 没当前的传输包的频域资源大小为 2个 RB, 以第一个 RB为起点, 以 2个 RB (包含第一个 RB )为间隔长度指示所有可用的起点, 如 附图 4所示, 则该上行频域资源上共有 50个可用的起点, 在具体分配时, 只需 要指示这 50个可用起点之一, 所需比特数开销为 6比特。 同理, 假设当前的传 输包的频域资源大小为 3个 RB, 以第一个 RB为起点, 以 2个 RB (包含第一个 RB ) 为间隔长度指示所有可用的起点, 则该上行频域资源上共有 49个可用的 起点。
方式三,根据当前配置的传输包的频域资源大小,指示上行频域资源中部 分上行频域资源所有可用起点之一。例如, 20MHz系统带宽下,频域配置了 100 个 RB, 但仅指示其中 60个 RB, 假设当前的传输包的频域资源大小为 2个 RB, 则在该上行频域资源上共有 59个可用的起点,在具体分配时, 只需要指示这 59 个可用起点之一, 而指示全部 59个可用起点所需比特数开销为 6比特。
方式四,根据当前配置的传输包的频域资源大小, 以若干资源块为间隔长 度间隔指示所述上行频域资源中部分上行频域资源所有可用起点之一。 例如, 20MHz系统带宽下, 频域配置了 100个 RB, 但仅指示其中 60个 RB, 假设当前 的传输包的频域资源大小为 2个 RB, 以第一个 RB为起点, 以 4个 RB (含第一个 RB ) 为间隔长度指示所有可用的起点, 则在该上行频域资源上共有 15个可用 的起点, 在具体分配时, 只需要指示这 15个可用起点之一, 而指示全部 15个可 用起点所需比特数开销为 4比特。 资源,
Figure imgf000012_0001
源。
当传输包的频域资源大小大于 1RB时,釆用非连续资源分配可以更好地利 用现有频域资源, 填补频域空洞。
受限的非连续频域资源分配方式体现在两方面:
一方面, 限制非连续频域簇的个数,相关限制可以通过高层信令半静态配 置, 也可以标准预先定义(具体参阅前述实施例 S101对应的说明)。 另一方
了节省开销,
Figure imgf000013_0001
域资源时,仅仅指示每个非连续频域簇的起点, 不指示每个非连续频域簇的大 小, 其原因在于,每个非连续频域簇的大小可以通过高层信令通知或者标准预 先定义(具体参阅前述实施例 S101对应的说明)。
Figure imgf000013_0002
, 对于每个 非连续频域簇起点的指示, 具体可以与从上行频域资源中分配连续频域资源 时, 只指示连续频域资源的起点方法类似, 即, 根据当前配置的传输包的频域 资源大小,指示上行频域资源中所有可用起点之一; 或者根据当前配置的传输 包的频域资源大小, 以若干资源块为间隔长度, 间隔指示上行频域资源中所有 可用起点之一; 或者根据当前配置的传输包的频域资源大小,指示上行频域资 源中部分上行频域资源所有可用起点之一;或者根据当前配置的传输包的频域 资源大小, 以若干资源块为间隔长度, 间隔指示所述上行频域资源中部分上行 频域资源所有可用起点之一。
以指示上行频域资源中所有可用起点之一为例, 假设在 20MHz系统带宽 下, 允许存在 2个非连续频域簇, 每个非连续频域簇的大小为 1RB, 具体分配 时,单独指示每个非连续频域簇,指示上行频域资源中所有可用起点共需开销 态为 (^。。= 4950 , 指示这 4950个可用起点需开销为 13比特。
如前所述, 本发明实施例中每个 CB Grant包括多个调度域, 每个调度域的 信息比特主要指示用于分配 CB上行频域资源的调度信息, 冗余比特用于指示 其它一些调度信息,例如,功控命令、调制编码方式,冗余版本( RV, Redundancy Version ), 频域调频信息和循环移位指示等中的一种或多种。 对于功控命令, 可以复用现有的定义方法, 用 1比特或 2比特信息指示; 而 LTE Rel-8的 MCS结 合 RV需要 5比特进行指示, 开销较大。 为了节省开销, 高层信令可以配置几个 MCS + RV的选项, 然后釆用 CB Grant具体指示为哪一个选项; 现有的循环移 位指示需要 3比特指示 8种状态, 为了节省开销, 可以压缩指示的状态, 例如, 釆用 1比特指示 2种循环移位值。 另外, 也可以用 1比特的冗余比特指示信道状 态信息请求( CSIR, Channel State Information Request ), 即 PUSCH上是否发送 非周期 CSI; 用 1比特的冗余比特指示资源分配类型, 即釆用的是连续或非连续 资源分配; 用部分冗余比特指示预编码信息和层数( Precoding information and number of layers )。
需要说明的是, 功控命令、 MCS和 RV、 预编码信息等此类调度信息并不 需要动态精确指示, 本发明实施例釆用在 CB Grant中配置只是一个可选方案, 也可以通过高层信令半静态配置或者标准预先定义,具体可参阅前文实施例相 关部分, 此处不再赘述。
当基站配置了 CB用户号时, 在 CB Grant里设置用户指示域, 该用户指示 域用于指示 CB用户组中调度的 CB用户。 例如, CB Grant在每个调度域里设置 了 2比特的用户指示域, 对于调度域 1 , 当指示 "00" 时, 表示调度了 CB用户 组 1中的 CB用户 1 , 其调度域 1里的所有调度信息用于指示 CB用户 1的上行传 输。 当配置了 CB用户号和用户指示域时, 可以具体指示当前调度的用户, 基 站后续勿需判断上行传输的数据来自哪个用户。
为了不增加新的下行控制信息的比特数 (即 DCI负载大小), 尽量控制 PDCCH盲检测 (BD, Blind Decoding )次数, 可以将本发明实施例提供的 CB Grant的比特数尽量设计成与下行控制信息 format 3/3A或 format 1C的信息比特 数目相同, 例如, 设计成与长期演进系统第 8版本(LTE Rel-8 )下行控制信息 format 3/3A或 format 1C的信息比特数目相同。 LTE Rel-8承载于公共搜索空间 的 DCI包括 DCI format 3/3 A, DCI format 0/1A和 DCI format 1C, 其中, DCI format 3/3A和 DCI format 0/1A信息比特数一样, 远大于 DCI format 1C。 当 CB Grant仅限于在公共搜索空间承载时, 考虑 1个 CB Grant可以调度多个 CB用户 组, 优选地, 设计 CB Grant的信息比特数和 DCI format 3/3A—样。 另外, 根据 需要, 设计最合理的信息开销, 不同的 CB Grant也可以设计成不同的长度, 例 如, 当前需要调度 6个 CB用户组, 其中 4个 CB用户组釆用同一个 CB Grant, 其 信息比特数和 DCI format 3/3A—样, 另外 2个 CB用户釆用另一个 CB Grant, 其 信息比特数和 DCI format 1C一样。 例如, 20MHz系统带宽下, DCI format 3/3A的信息比特数为 44比特。 将本 发明实施例提供的 CB Grant的信息比特数设计成 44比特。 其中, 除去 16比特的 循环冗余校验 ( CRC, Cyclic Redundancy Check ), 还有 28比特可用于调度 CB 上行传输。 当釆用 CB上行频域资源分配方法一(连续频域资源分配, 只指示 上行频域资源中所有可用起点之一, 不指示频域资源的大小), 每个 CB上行传 输需要大约 7比特, 因此每个 CB Grant可以调度 4个 CB用户组。 当釆用受限的 每个非连续频域簇的大小为 1RB, 只指示每个非连续频域簇的起点), 每个 CB 上行传输需要大约 14比特, 因此每个 CB Grant可以调度 2个 CB用户组。具体地, 如果釆用以若干资源块为间隔长度,间隔指示上行频域资源中所有可用起点之 一, 或指示上行频域资源中部分上行频域资源所有可用起点之一, 或以若干资 源块为间隔长度,间隔指示所述上行频域资源中部分上行频域资源所有可用起 点之一, 可以留出部分比特(即冗余比特), 用于指示其它调度信息, 例如功 控命令和 MCS等, 也可以作为虚拟 CRC ( virtual CRC ), 降低 CRC虚警概率。
进一步地, 如果本发明实施例提供的 CB Grant仅限于在公共搜索空间承 载,由于现有的公共搜索空间容量有限,可以对公共搜索空间的大小进行扩展, 具体扩展多少可以标准预定义或通过高层信令半静态配置。 需要说明的是, 如 果有其它类似于 CB Grant的下行控制信息需要在公共搜索空间传输时,也可以 釆用本发明实施例所提供的理由扩大搜索空间。
请继续参阅图 5, 本发明实施例提供的一种基于竟争的上行传输方法基本 流程示意图。 该传输方法的执行主题可以但不限于 LTE-A系统用户设备, 主要 执行步骤包括:
S501 ,获取基于竟争的用户组号和为多个基于竟争的用户组配置的相同的 基于竟争的无线网络临时标识 CB-RNTI。
在本实施例中, 用户设备通过接收高层信令获取其 CB-RNTI。 同样地,
UE通过接收高层信令获取所属的 CB用户组号, 或者根据标准预先定义的方法 确定所属的 CB用户组号。
另外, 用户设备还可以通过接收 RRC专有信令获取其 CB用户号。 对于基于竟争的上行传输所需的部分调度信息, 例如 MCS、 功控命令、 频域资源大小、频率资源分配方式、频域跳频指示和循环移位指示等中的一种 或多种, UE也可以通过接收高层信令获取或者根据标准预先定义确定。
S502, 根据获取的 CB-RNTI, 监听 CB Grant以确定 CB上行传输所需的调 度信息, 该调度信息主要包括 CB上行传输的频域资源。
本实施例中, CB Grant用于调度基于竟争的上行传输, 其比特信息主要用 于指示分配的上行时频域资源信息。 另外, 当基站配置了 CB用户号时, CB Grant的比特信息还包括用户指示域, 该用户指示域用于指示 CB用户组中调度 的 CB用户。 冗余比特用于指示其它一些调度信息, 例如, 功控命令、 MCS, RV, 频域调频信息和循环移位指示等中的一种或多种。
在本发明另一实施例中,冗余比特用于指示的其它一些调度信息包括功控 命令、 MCS, RV, 频域调频信息, 循环移位指示, 信道状态信息请求, 资源 分配类型, 预编码信息和层数等中的一种或多种。
由于 CB Grant是基站动态地下发, 因此, 可以降低用户面延时, 并且灵活 分配频域资源。 而当 UE有上行数据需要发送且未被配置非竟争上行传输 CB Grant时, 可以监听 CB Grant, 确定可使用的 CB上行传输资源和部分其他调度 信息, 具体地, 包括: 根据获取的 CB-RNTI, 监测到与该 CB-RNTI相匹配的 CB Grant; 根据获取的 CB用户组号, 读取与该 CB用户组号对应的调度域指示 的调度信息; 根据读取的调度信息, 确定可使用的 CB上行传输资源。 当 CB Grant里配置了其它调度信息时, 例如, 配置了调制编码方式、 功控命令和冗 余版本等时, 也可以读取这些调度信息。
例如, UE根据当前获取的 CB用户组号 3 , 读取 CB Grant中第 3个调度域的 调度信息, 进一步, 根据读取的调度域信息, 确认当前可使用的 CB上行传输 资源以及发送数据时所使用的配置信息 (当 CB Grant里配置了其它调度信息 时)。
另外, 当 CB Grant的比特信息还包括用户指示域时, UE根据用户指示域 里的比特值确定当前是否被基站调度, 即, 用户设备需要根据获取的 CB用户 组号, 读取与所述 CB用户组号对应的 CB Grant调度域指示的调度信息, 根据 通过接收 RRC专有信令获取的所述 CB用户号和所述读取的调度信息 (用户指 示域), 确定可使用的基于竟争的上行传输资源。 例如, CB Grant在每个调度 域里设置了 2比特的用户指示域, 对于调度域 1 , 当指示 "00" 时, 表示 CB用 户组 1中的 CB用户 1被调度了,此时,其调度域 1里的所有调度信息用于指示 CB 用户 1的上行传输。 此时, CB用户 2, 3和 4通过解读用户指示域, 获知自己未 被调度, 因此不进行上行传输。
S503 , 使用 CB Grant授权的 CB上行传输资源发送上行数据或上报緩存状 态报告。
请参阅图 6, 本发明实施例六提供的一种基站基本逻辑结构示意图。 为了 便于说明,仅仅示出了与本发明实施例相关的部分。该基站包含的功能模块可 以是软件模块、 硬件模块或软硬件相结合的模块, 包括第一配置模块 601和第 二配置模块 602, 其中:
第一配置模块 601 , 用于配置基于竟争的用户组号和为多个基于竟争的用 户组配置相同的基于竟争的无线网络临时标识 CB-RNTI。
第一配置模块 601除用于配置 CB-RNTI和 CB用户组号, 进一步地, 还可以 用于配置基于竟争的上行传输所需的部分调度信息, 例如, 调制编码方式、 功 控命令、 频域资源大小、 资源分配方式、 频域跳频指示、 循环移位指示、 预编 码信息和层数等中的一种或多种, 具体配置方法可以参阅前文的方法实施例。 另外, 第一配置模块 601还可以通过无线资源控制专有信令为每个 CB用户组的 每个 CB用户配置一个编号, 即 CB用户号, 该 CB用户号用于标识该 CB用户组 里的 CB用户。
第二配置模块 602,用于对第一配置模块 601配置的具有相同 CB-RNTI的多 个 CB用户组, 配置相同的一个 CB Grant, 具体地, 第二配置模块 602通过高层 信令配置基于竟争的用户组号和为多个基于竟争的用户组配置相同的 CB-RNTL 所配置的相同 CB Grant具体包括多个调度域, 其中, 用于标识该调 度域的调度域号与第一配置模块 601配置的基于竟争的用户组号——对应。
本发明实施例中, CB Grant用于调度基于竟争的上行传输, 其信息比特主 要用于指示分配的上行时频域资源信息。 当基站配置了 CB用户号时, 在 CB Grant里设置用户指示域, 该用户指示域用于指示 CB用户组中调度的 CB用户。 冗余比特可用于指示其它一些调度信息, 例如, 功控命令、 MCS、 RV、 频域 跳频信息、 循环移位指示、 信道状态信息请求、 资源分配类型、 预编码信息和 层数等中的一种或多种。
第二配置模块 602在对具有相同 CB-RNTI的多个 CB用户组配置相同的 CB
设计的频域资源起点指示方法, 如此可以节省传输 CB Grant带来的开销, 即第 二配置模块 602可以包括连续频域资源分配子模块 701和 /或非连续频域资源分 配子模块 801 , 如附图 7、 附图 8和附图 9所示, 其中, 连续频域资源分配子模块 分配时只指示连续频域资源的起点, 非连续频域资源分配子模块 801釆用非连 连续频域簇的个数, 且只指示所述非连续频域簇的起点。
附图 7或附图 9示例的连续频域资源分配子模块 701可以进一步包括第一指 示单元 1001、 第二指示单元 1101 , 第三指示单元 1201或第四指示单元 1301 , 分 别如图 10、 图 11、 图 12或图 13所示本发明实施例提供的基站, 其中:
第一指示单元 1001 , 用于根据当前配置的传输包的频域资源大小,指示上 行频域资源中所有可用起点之一;
第二指示单元 1101 , 用于根据当前配置的传输包的频域资源大小, 以若干 资源块为间隔长度间隔指示上行频域资源中所有可用起点之一;
第三指示单元 1201 , 用于根据当前配置的传输包的频域资源大小,指示上 行频域资源中部分上行频域资源所有可用起点之一;
第四指示单元 1301 , 用于根据当前配置的传输包的频域资源大小, 以若干 资源块为间隔长度间隔指示所述上行频域资源中部分上行频域资源所有可用 起点之一。
附图 8或附图 9示例的非连续频域资源分配子模块 801可以进一步包括第五 指示单元 1401、 第六指示单元 1501 , 第七指示单元 1601或第八指示单元 1701 , 分别如图 14、 图 15、 图 16或图 17所示本发明实施例提供的基站, 其中: 第五指示单元 1401 , 用于根据当前配置的传输包的频域资源大小,指示上 行频域资源中所有可用起点之一;
第六指示单元 1501 , 用于根据当前配置的传输包的频域资源大小, 以若干 资源块为间隔长度间隔指示上行频域资源中所有可用起点之一;
第七指示单元 1601 , 用于根据当前配置的传输包的频域资源大小,指示上 行频域资源中部分上行频域资源所有可用起点之一;
第八指示单元 1701 , 用于根据当前配置的传输包的频域资源大小, 以若干 资源块为间隔长度间隔指示上行频域资源中部分上行频域资源所有可用起点 之一。
从上述实施例可知, 由于第一配置模块 601将用户设备监测 CB Grant所需 的信息釆用静态或半静态方式配置, 并且, 第二配置模块 602为具有相同 CB-RNTI的多个 CB用户组配置同一个 CB Grant, 因此, 本发明无需为每个 CB 用户组都发送 CB Grant, 减小了用于发送 CB Grant的资源开销, 从而降低出现 调度阻滞的概率。
请参阅图 18, 本发明实施例一提供的一种用户设备基本逻辑结构示意图。 为了便于说明,仅仅示出了与本发明实施例相关的部分。该用户设备包含的功 能模块可以是软件模块、硬件模块或软硬件相结合的模块,包括获取模块 1801、 确定模块 1802和传输模块 1803 , 其中:
获取模块 1801 ,用于获取基于竟争的用户组号和为多个基于竟争的用户组 配置的相同的基于竟争的无线网络临时标识 CB-RNTI。
在本实施例中, 所述信息包括 CB-RNTI和 CB用户组号, 进一步, 还可以 包括发送基于竟争的上行传输所需的部分调度信息, 例如, 调制编码方式、 功 控命令、 频域资源大小、 资源分配方式、 频域跳频指示、 循环移位指示、 预编 码信息和层数等中的一种或多种, 具体配置方法可以参阅前文的方法实施例。 另外, 获取模块 1801还可以用于获取 CB用户号。
确定模块 1802, 用于根据获取模块 1501获取的 CB-RNTI, 监听 CB Grant 以确定 CB上行传输所需的调度信息, 该调度信息主要包括 CB上行传输的频域 资源。
CB Grant包括多个调度域,每个调度域用于指示一个基于竟争的用户组的 调度信息, 而 CB用户组号与 CB Grant中的调度域号——对应。
本实施例中, CB Grant用于调度基于竟争的上行传输, 其信息比特主要用 于指示分配的上行时频域资源信息, 冗余比特还用于指示其它一些调度信息, 例如, 功控命令、 MCS, RV, 频域调频信息和循环移位指示等中的一种或多 种。
传输模块 1803 ,用于使用 CB Grant授权的确定模块 1802确定的基于竟争的 上行传输资源发送上行数据或上报緩存状态报告。
图 18示例的确定模块 1802可以进一步包括监测单元 1901、 读取单元 1902 和确定单元 1903 ,如附图 19所示本发明实施例提供的另一种用户设备基本逻辑 结构示意图, 其中:
监测单元 1901 , 用于根据获取模块 1801获取的 CB-RNTI , 监测与该 CB-RNTI相匹配的 CB Grant;
读取单元 1902, 用于根据获取模块 1801获取的 CB用户组号, 读取与该 CB 用户组号对应的调度域指示的调度信息;
确定单元 1903 , 用于根据读取单元 1902读取的调度信息, 确定可使用的 CB上行传输资源。
可选地, 当基站配置了 CB用户号时, 确定单元 1903用于根据获取的所述 CB用户号和所述读取的调度信息, 确定可使用的基于竟争的上行传输资源。
需要说明的是, 上述设备各模块 /单元之间的信息交互、 执行过程等内容, 由于与本发明方法实施例基于同一构思,其带来的技术效果与本发明方法实施 例相同, 具体内容可参见本发明方法实施例中的叙述, 此处不再赘述。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步 骤是可以通过程序来指令相关的硬件来完成,该程序可以存储于一计算机可读 存储介质中, 存储介质可以包括: 只读存储器(ROM, Read Only Memory ), 随机存取存储器(RAM, Random Access Memory ), 磁盘或光盘等。
以上对本发明实施例提供的基于竟争的上行传输方法、配置方法和相关设 阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时, 对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围 上均会有改变之处, 综上所述, 本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1、 一种基于竟争的上行传输配置方法, 其特征在于, 包括:
配置基于竟争的用户组号和为多个基于竟争的用户组配置相同的基于竟 争的无线网络临时标识 CB-RNTI;
对具有所述相同的 CB-RNTI的多个基于竟争的用户组,配置相同的一个基 于竟争的上行授权 CB Grant, 其中, 所述 CB Grant包括多个调度域, 所述基于 竟争的用户组号与用于标识所述调度域的调度域号——对应,所述调度域指示 用于分配上行频域资源的调度信息。
2、 如权利要求 1所述的方法, 其特征在于, 所述配置基于竟争的用户组号 和为多个基于竟争的用户组配置相同的基于竟争的无线网络临时标识
CB-RNTI包括:
通过高层信令配置基于竟争的用户组号和为多个基于竟争的用户组配置 相同的基于竟争的无线网络临时标识 CB-RNTI。
3、 如权利要求 1或 2所述的方法, 其特征在于, 所述方法还包括: 配置基于竟争的上行传输所需的部分调度信息,所述部分调度信息为调制 编码方式、 功控命令、 频域资源大小、 资源分配方式、 频域跳频指示和循环移 位指示信息中的一种或多种。
4、 如权利要求 1或 2所述的方法, 其特征在于, 所述 CB Grant调度域的冗 余比特用于指示: 虚拟循环冗余校验, 功控命令, 调制编码格式, 冗余版本, 频域调频信息和循环移位指示、 信道状态信息请求, 资源分配类型, 预编码信 息和层数中的一种或多种。
5、 如权利要求 1所述的方法, 其特征在于, 所述分配上行频域资源包括: 时只指示所述连续频域资源的起点; 和 /或 分配时限制非连续频域簇的个数, 且只指示每个所述非连续频域簇的起点。
6、 如权利要求 5所述的方法, 其特征在于, 所述只指示所述连续频域资源 的起点包括: 根据当前配置的传输包的频域资源大小,指示所述上行频域资源中所有可 用起点之一; 或者
根据当前配置的传输包的频域资源大小, 以若干资源块为间隔长度, 间隔 指示所述上行频域资源中所有可用起点之一; 或者
根据当前配置的传输包的频域资源大小,指示所述上行频域资源中部分上 行频域资源所有可用起点之一; 或者
根据当前配置的传输包的频域资源大小, 以若干资源块为间隔长度, 间隔 指示所述上行频域资源中部分上行频域资源所有可用起点之一。
7、 如权利要求 5所述的方法, 其特征在于, 所述只指示每个所述非连续频 域资源簇的起点包括:
根据当前配置的传输包的频域资源大小,指示所述上行频域资源中所有可 用起点之一; 或者
根据当前配置的传输包的频域资源大小, 以若干资源块为间隔长度, 间隔 指示上行频域资源中所有可用起点之一; 或者
根据当前配置的传输包的频域资源大小,指示所述上行频域资源中部分上 行频域资源所有可用起点之一; 或者
根据当前配置的传输包的频域资源大小, 以若干资源块为间隔长度, 间隔 指示所述上行频域资源中部分上行频域资源所有可用起点之一。
8、 如权利要求 1所述的方法, 其特征在于, 所述 CB Grant承载于公共搜索 空间,所述 CB Grant的信息比特数与下行控制信息 format 3/3A或 format 1C的信 息比特数目相同。
9、 如权利要求 1所述的方法, 其特征在于, 所述方法还包括:
通过无线资源控制专有信令为每个基于竟争的用户组中的每个基于竟争 的用户配置基于竟争的用户号。
10、 如权利要求 9所述的方法, 其特征在于, 所述方法还包括:
所述 CB Grant的所述多个调度域中的每个调度域还包括用户指示域,所述 用户指示域用于指示基于竟争的用户组中的基于竟争的用户号。
11、 一种基于竟争的上行传输方法, 其特征在于, 包括: 获取基于竟争的用户组号和为多个基于竟争的用户组配置的相同的基于 竟争的无线网络临时标识 CB-RNTI;
根据所述 CB-RNTI, 监听基于竟争的上行授权 CB Grant, 确定基于竟争的 上行传输所需的调度信息, 所述调度信息包括基于竟争的上行传输资源, 所述 CB Grant包括多个调度域,所述基于竟争的用户组号与用于标识所述调度域的 调度域号一一对应;
根据所述确定基于竟争的上行传输所需的调度信息, 使用所述 CB Grant 授权的所述基于竟争的上行传输资源发送上行数据或上报緩存状态报告。
12、 如权利要求 11所述的方法, 其特征在于, 所述方法还包括:
获取部分调度信息, 所述部分调度信息为调制编码格式、 功控命令、 频域 资源大小、 资源分配方式、 频域跳频指示和循环移位指示中的一种或多种。
13、 如权利要求 11或 12所述的方法, 其特征在于, 所述监听基于竟争的上 行授权 CB Grant以确定基于竟争的上行传输所需的调度信息包括:
根据获取的所述 CB-RNTI, 监测与所述 CB-RNTI相匹配的 CB Grant;
根据获取的所述基于竟争的用户组号,读取与所述基于竟争的用户组号对 应的 CB Grant调度域指示的调度信息;
根据所述读取的调度信息, 确定可使用的基于竟争的上行传输资源。
14、 如权利要求 13所述的方法, 其特征在于, 所述方法还包括:
通过接收无线资源控制专有信令获取基于竟争的用户号。
15、 如权利要求 13所述的方法, 其特征在于, 所述监听基于竟争的上行授 权 CB Grant以确定基于竟争的上行传输所需的调度信息包括:
根据获取的所述 CB-RNTI, 监测与所述 CB-RNTI相匹配的 CB Grant;
根据获取的所述基于竟争的用户组号,读取与所述基于竟争的用户组号对 应的 CB Grant调度域指示的调度信息;
根据获取的所述基于竟争的用户号和所述读取的调度信息,确定可使用的 基于竟争的上行传输资源。
16、 一种基站, 其特征在于, 所述基站包括:
第一配置模块,用于配置基于竟争的用户组号和为多个基于竟争的用户组 配置相同的基于竟争的无线网络临时标识 CB-RNTI;
第二配置模块, 用于对所述第一配置模块配置的具有相同所述 CB-RNTI 的多个基于竟争的用户组, 配置相同的一个基于竟争的上行授权 CB Grant, 所 述 CB Grant具体包括多个调度域,所述第一配置模块配置的基于竟争的用户组 号与用于标识所述第二配置模块配置的 CB Gran的调度域的调度域号——对
17、 根据权利要求 16所述的基站, 其特征在于,
所述第一配置模块具体用于通过高层信令配置基于竟争的用户组号和为 多个基于竟争的用户组配置相同的基于竟争的无线网络临时标识 CB-RNTI。
18、 如权利要求 16所述的基站, 其特征在于,
所述第一配置模块还用于配置基于竟争的上行传输所需的部分调度信息, 所述部分调度信息为调制编码方式、功控命令、频域资源大小、资源分配方式、 频域跳频指示和循环移位指示中的一种或多种。
19、 如权利要求 16所述的基站, 其特征在于,
所述第二配置模块配置所述相同的一个 CB Grant的冗余比特用于指示:虚 拟循环冗余校验, 功控命令, 调制编码格式, 冗余版本, 频域调频信息和循环 移位指示中的一种或多种。
20、 如权利要求 16所述的基站, 其特征在于, 所述第二配置模块包括: 连续频域资源分配子模块,用于釆用连续频域资源分配方式从上行频域资 源中分配连续频域资源, 在分配时只指示所述连续频域资源的起点; 和 /或 非连续频域资源分配子模块,用于釆用非连续频域资源分配方式从上行频 域资源中分配非连续频域资源,在分配时限制非连续频域簇的个数,且只指示 所述非连续频域簇的起点。
21、 如权利要求 20所述的基站, 其特征在于, 所述连续频域资源分配子模 块包括:
第一指示单元, 用于根据当前配置的传输包的频域资源大小,指示所述上 行频域资源中所有可用起点之一; 或者
第二指示单元, 用于根据当前配置的传输包的频域资源大小, 以若干资源 块为间隔长度间隔指示所述上行频域资源中所有可用起点之一; 或者 第三指示单元, 用于根据当前配置的传输包的频域资源大小,指示所述上 行频域资源中部分上行频域资源所有可用起点之一; 或者
第四指示单元, 用于根据当前配置的传输包的频域资源大小, 以若干资源 块为间隔长度间隔指示所述上行频域资源中部分上行频域资源所有可用起点 之一„
22、 如权利要求 20所述的基站, 其特征在于, 所述非连续频域资源分配子 模块包括:
第五指示单元, 用于根据当前配置的传输包的频域资源大小,指示所述上 行频域资源中所有可用起点之一; 或者
第六指示单元, 用于根据当前配置的传输包的频域资源大小, 以若干资源 块为间隔长度间隔指示所述上行频域资源中所有可用起点之一; 或者
第七指示单元, 用于根据当前配置的传输包的频域资源大小,指示所述上 行频域资源中部分上行频域资源所有可用起点之一; 或者
第八指示单元, 用于根据当前配置的传输包的频域资源大小, 以若干资源 块为间隔长度间隔指示所述上行频域资源中部分上行频域资源所有可用起点 之一„
23、 如权利要求 19所述的基站, 其特征在于, 所述第一配置模块还用于通 过无线资源控制专有信令为每个基于竟争的用户组的每个基于竟争的用户配 置基于竟争的用户号。
24、 如权利要求 23所述的基站, 其特征在于,
所述 CB Grant的所述多个调度域中的每个调度域还包括用户指示域,所述 用户指示域用于指示基于竟争的用户组中的基于竟争的用户号。
25、 一种用户设备, 其特征在于, 所述用户设备包括:
获取模块,用于获取基于竟争的用户组号和为多个基于竟争的用户组配置 的相同的基于竟争的无线网络临时标识 CB-RNTI;
确定模块, 用于根据所述获取模块获取的 CB-RNTI,监听基于竟争的上行 授权 CB Grant以确定基于竟争的上行传输所需的调度信息,所述调度信息包括 基于竟争的上行传输资源, 所述监听的 CB Grant包括多个调度域, 所述获取模 块获取的基于竟争的用户组号与用于标识所述确定模块监听的所述 CB Grant 的调度域的调度域号一一对应;
传输模块,用于使用所述 CB Grant授权的基于竟争的上行传输资源发送上 行数据或上报緩存状态报告,所述基于竟争的上行传输资源位于所述确定模块 确定的调度信息中。
26、 如权利要求 25所述的用户设备, 其特征在于, 所述确定模块包括: 监测单元, 用于根据所述获取模块获取的所述 CB-RNTI , 监测与所述
CB-RNTI相匹配的 CB Grant;
读取单元, 用于根据所述获取模块获取的所述基于竟争的用户组号,读取 与所述基于竟争的用户组号对应的所述监测单元监测的 CB Grant的调度域指 示的调度信息;
确定单元, 用于根据所述读取单元读取的调度信息,确定可使用的基于竟 争的上行传输资源。
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