WO2014205834A1 - 调制与编码格式选择方法、用户设备及基站 - Google Patents

调制与编码格式选择方法、用户设备及基站 Download PDF

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Publication number
WO2014205834A1
WO2014205834A1 PCT/CN2013/078494 CN2013078494W WO2014205834A1 WO 2014205834 A1 WO2014205834 A1 WO 2014205834A1 CN 2013078494 W CN2013078494 W CN 2013078494W WO 2014205834 A1 WO2014205834 A1 WO 2014205834A1
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WO
WIPO (PCT)
Prior art keywords
mcs index
mcs
user equipment
index table
base station
Prior art date
Application number
PCT/CN2013/078494
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English (en)
French (fr)
Inventor
陈德
鲁振伟
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.)
Filing date
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 CN201380002302.6A priority Critical patent/CN104541558B/zh
Priority to PCT/CN2013/078494 priority patent/WO2014205834A1/zh
Publication of WO2014205834A1 publication Critical patent/WO2014205834A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0016Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy involving special memory structures, e.g. look-up tables

Definitions

  • Embodiments of the present invention relate to a wireless communication technology, and in particular, to a modulation and coding format selection method, a user equipment, and a base station. Background technique
  • the user equipment In the Long Term Evolution (LTE), the user equipment (User Equipment, UE) is scheduled by the eNodeB (eNB) to implement uplink and downlink data transmission.
  • the eNB sends the downlink data to the UE as an example.
  • the eNB sends the data related information such as the modulation and coding scheme (MCS) through the physical downlink control channel (PDCCH).
  • MCS modulation and coding scheme
  • PDCCH physical downlink control channel
  • DCI Downlink Control Information
  • the UE receives data according to the DCI to a Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • the embodiment of the present invention provides a modulation and coding format selection method, a user equipment, and a base station, so that when the MCS exceeds the number of indexes mapped by the number of bits, the MCS that satisfies the requirement can be selected without changing physical layer signaling or messages. the goal of.
  • an embodiment of the present invention provides a method for selecting a modulation and coding format MCS, including:
  • the method before the searching for the second MCS index corresponding to the first MCS index in the valid MCS index table, the method further includes:
  • the MCS index table is started in synchronization with the base station to make the MCS index table take effect.
  • the method further includes:
  • the MCS bit table indicates the selected MCS of the base station, and generates the MCS index table according to the MCS bit table.
  • the high-layer signaling further carries an effective time, which is used to indicate that the MCS index table is started. Time
  • the user equipment starts the MCS index table in synchronization with the base station, and includes:
  • the user equipment starts the MCS index table simultaneously with the base station according to the effective time, so that the MCS index table takes effect.
  • the method further includes:
  • the initiating the MCS index table in synchronization with the base station includes:
  • the MCS index table After transmitting the configuration success response message to the base station, the MCS index table is started to make the MCS index table take effect.
  • the method before the searching for the second MCS index corresponding to the first MCS index in the valid MCS index table, the method further includes:
  • the MCS index table is determined from each of the pre-stored MCS index tables; or, the MCS bit table sent by the base station by using a broadcast message is received, where the MCS bit table indicates the MCS selected by the base station, according to The MCS bit table generates the MCS index table.
  • an embodiment of the present invention provides a modulation and coding format MCS selection method, including:
  • the method before the selecting the first MCS index corresponding to the second MCS index in the valid MCS index table, the method further includes:
  • the MCS index table is started in synchronization with the user equipment such that the MCS index table is valid.
  • the base station before the configuring, by the physical layer, the MCS index table, the base station further includes: according to the user The scenario in which the device is located, selects at least one MCS index for the user equipment from the MCS format table, generates the MCS index table by using the selected MCS index, and sends the MCS index table to the user equipment by using high layer signaling.
  • the MCS index table or
  • the MCS index table sends the MCS index table identifier of the MCS index table to the user equipment by using the high layer signaling, so that the user equipment determines, according to the MCS index table identifier, from the pre-stored MCS index table.
  • the signaling sends the MCS bit table to the user equipment, so that the user equipment generates the MCS index table according to the MCS bit table.
  • the high-layer signaling further carries an effective time, which is used to indicate that the MCS index table is started. Time
  • the initiating the MCS index table in synchronization with the user equipment includes:
  • the MCS index table is started simultaneously with the user equipment, so that the MCS index table is valid.
  • the method further includes:
  • the initiating the MCS index table in synchronization with the user equipment, so that the MCS index table is valid includes:
  • the MCS index table After receiving the configuration success response message sent by the user equipment, the MCS index table is started to make the MCS index table take effect.
  • the method further includes: if the user equipment is detected If the scene changes, reselect the MCS index.
  • the user equipment is at least one, and the base station sends the first MCS index to the user equipment, so that the user equipment is in an effective MCS index table.
  • Selecting at least one MCS index from the MCS format table, and the selected MCS index is generated to generate the MCS index table, and sending the MCS index table to each user equipment by using a broadcast message;
  • the device determines, according to the MCS index table identifier, the MCS index table from each pre-stored MCS index table; or
  • the device generates the MCS index table according to the MCS bit table.
  • an embodiment of the present invention provides a user equipment, including:
  • a receiving module configured to receive a first modulation and coding format MCS index sent by the base station, where the first searching module is configured to search, in the valid MCS index table, a second corresponding to the first MCS index received by the receiving module MCS index;
  • a second searching module configured to: according to the second MCS index that is searched by the first searching module
  • the modulation order and the transport block size index corresponding to the second MCS index are searched in the MCS format table, where the second MCS index in the MCS index table is a subset of the index in the MCS format table;
  • a communication module configured to communicate with the base station by using a modulation order and a transport block size index corresponding to the second MCS index that is searched by the second search module.
  • the user equipment further includes: a configuration module, configured to configure the MCS index table at a physical layer;
  • a startup module configured to start the MCS index table configured by the configuration module in synchronization with the base station, so that the MCS index table is valid.
  • the receiving module is further configured to receive the MCS index that is sent by the base station by using high layer signaling Table; or,
  • the receiving module is further configured to receive an identifier of the MCS index table sent by the base station by using high layer signaling;
  • the user equipment further includes:
  • a processing module configured to determine, according to the MCS index table identifier received by the receiving module, the MCS index table from each pre-stored MCS index table;
  • the receiving module is further configured to receive an MCS bit table sent by the base station by using high layer signaling, where the MCS bit table indicates the MCS selected by the base station;
  • the processing module is configured to generate, according to the MCS bit table received by the receiving module, MCS index table.
  • the high-level information received by the receiving module further carries an effective time, and is used to indicate the MCS.
  • the startup module is configured to start the MCS index table simultaneously with the base station according to the effective time received by the receiving module, so that the MCS index table is valid.
  • the user equipment further includes:
  • a sending module configured to send a configuration success response message to the base station, where the configuration success response message is used to instruct the base station to start the MCS index table after receiving the configuration success response message;
  • the startup module is specifically configured to: after the sending module sends a configuration success response message to the base station, start the MCS index table synchronously with the base station, so that the MCS index table is valid.
  • the receiving module is further configured to receive the MCS index table that is sent by the base station by using a broadcast message;
  • the receiving module is further configured to receive an identifier of the MCS index table sent by the base station by using a broadcast message;
  • the processing module is further configured to determine, according to the MCS index table identifier received by the receiving module, the MCS index table from each pre-stored MCS index table; or
  • the receiving module is further configured to receive an MCS bit table sent by the base station by using a broadcast message, where the MCS bit table indicates the MCS selected by the base station;
  • the processing module is further configured to generate the MCS index table according to the MCS bit table received by the receiving module.
  • an embodiment of the present invention provides a base station, including:
  • a storage module configured to store an effective modulation and coding format MCS index table
  • a selecting module configured to select, in the valid MCS index table stored by the storage module, a first MCS index corresponding to the second MCS index;
  • a sending module configured to send, to the user equipment, the first MCS index that is selected by the selecting module, so that the user equipment searches for a second MCS index corresponding to the first MCS index in the valid MCS index table, And searching and in the MCS format table according to the second MCS index.
  • a communication module configured to communicate with the user equipment by using a modulation order and a transport block size index corresponding to the second MCS index.
  • the base station further includes: a configuration module, configured to configure the MCS index table at a physical layer;
  • a startup module configured to start, in synchronization with the user equipment, the MCS index table configured by the configuration module, so that the MCS index table is valid.
  • the selecting module is configured to use the MCS according to a scenario in which the user equipment is located Selecting at least one MCS index for the user equipment in the format table;
  • the base station further includes:
  • a generating module configured to generate the MCS index table by using the MCS index selected by the selection module
  • the sending module is further configured to send the MCS index table to the user equipment by using high layer signaling.
  • the selecting module is configured to perform, according to a scenario in which the user equipment is located, from a pre-stored Determining the MCS index table in the MCS index table;
  • the sending module is configured to determine, by using high layer signaling, the MCS index table determined by the selecting module
  • the MCS index table identifier is sent to the user equipment, so that the user equipment determines the MCS index table from the pre-stored MCS index tables according to the MCS index table identifier.
  • the selecting module is further configured to: according to a scenario in which the user equipment is located, Selecting at least one MCS index for the user equipment in the MCS format table;
  • the generating module is further configured to generate an MCS bit table by using the MCS index selected by the selecting module;
  • the sending module is further configured to send, by using the high layer signaling, the MCS bit table generated by the generating module to the user equipment, so that the user equipment generates the MCS index table according to the MCS bit table.
  • the first information sent by the sending module further carries an effective time , indicating a startup time of the MCS index table;
  • the startup module is configured to start the MCS index table simultaneously with the user equipment according to the effective time sent by the sending module, so that the MCS index table is valid.
  • the base station further includes:
  • a receiving module configured to receive a configuration success response message sent by the user equipment, where the configuration success response message is used to indicate that the MCS index table of the user equipment is successfully configured and is started after sending the configuration success response message;
  • the startup module is configured to start the MCS index table in synchronization with the user equipment after the receiving module receives the configuration success response message, so that the MCS index table is valid.
  • the base station further includes:
  • the detecting module is configured to reselect the MCS index if it detects that the scene in which the user equipment is located changes.
  • the base station further includes:
  • a processing module configured to select at least one MCS index from the MCS format table, and generate the MCS index table by using the selected MCS index;
  • the sending module is further configured to send, by using a broadcast message, the MCS index table generated by the processing module to each user equipment; or
  • the processing module is configured to determine the MCS index table from each of the pre-stored MCS index tables.
  • the sending module is further configured to send, by using a broadcast message, an MCS index table identifier of the MCS index table determined by the processing module. For each of the user devices; or
  • the processing module is configured to select at least one MCS index from the MCS format table, and generate the MCS bit table by using the selected MCS index;
  • the sending module is further configured to send, by using a broadcast message, the MCS bit table generated by the processing module to each user equipment.
  • an embodiment of the present invention provides a user equipment, including:
  • a receiver configured to receive a first modulation and coding format MCS index sent by the base station; a processor, configured to search, in the valid MCS index table, a second MCS index corresponding to the first MCS index received by the receiver, and look up the second MCS in the MCS format table according to the second MCS index.
  • a transport block size index is in communication with the base station.
  • the processor is further configured to: configure the MCS index table at a physical layer, and start the MCS index table configured by the configuration module in synchronization with the base station , in order to make the MCS index table take effect.
  • the receiver is further configured to: receive, by the receiver, the base station The MCS index table sent by the high layer signaling; or
  • the receiver is further configured to: receive an identifier of the MCS index table sent by the base station by using high layer signaling,
  • the processor is further configured to determine, according to the MCS index table identifier received by the receiver, the MCS index table from each of the pre-stored MCS index tables; or
  • the receiver is further configured to receive an MCS bit table sent by the base station by using high layer signaling, where the MCS bit table indicates the selected MCS of the base station;
  • the processor is further configured to generate the MCS index table according to the MCS bit table received by the receiver.
  • the high layer information received by the receiver further carries an effective time, and is used to indicate the MCS The start time of the index table;
  • the processor is configured to start the MCS index table with the base station according to the effective time received by the receiver, so that the MCS index table is valid.
  • the user equipment further includes: a transmitter, configured to send a configuration success response message to the base station, where the configuration success response message is used to indicate that the base station is After the configuration success response message is received, the MCS index table is started; the processor is specifically configured to start the MCS index table synchronously with the base station after the transmitter sends a configuration success response message to the base station. , in order to make the MCS index table take effect.
  • the receiver is further configured to receive, by the base station, the message that is sent by using a broadcast message.
  • the receiver is further configured to receive an identifier of the MCS index table sent by the base station by using a broadcast message;
  • the processor is further configured to determine, according to the MCS index table identifier, the MCS index table from each pre-stored MCS index table; or
  • the receiver is further configured to receive an MCS bit table sent by the base station by using a broadcast message, where the MCS bit table indicates the selected MCS of the base station;
  • the processor is further configured to generate the MCS index table according to the MCS bit table.
  • an embodiment of the present invention provides a base station, including:
  • a memory for storing an effective MCS index table
  • a processor configured to select, in the memory-stored and validated modulation and coding format MCS index table, a first MCS index corresponding to the second MCS index;
  • a transmitter configured to send, to the user equipment, the first MCS index selected by the processor, so that the user equipment searches for a second MCS index corresponding to the first MCS index in an effective MCS index table, and according to The second MCS index searches the MCS format table for the modulation order and the transport block size index corresponding to the second MCS index, where the second MCS index in the MCS index table is in the MCS format table. a subset of the index;
  • the processor is further configured to communicate with the user equipment by using a modulation order corresponding to the second MCS index and a transport block size index.
  • the processor is further configured to: configure the MCS index table at a physical layer, and start the MCS cable table in synchronization with the user equipment, so that The MCS index table takes effect.
  • the processor is further configured to: according to a scenario in which the user equipment is located, Selecting at least one MCS for the user equipment in the MCS format table, and generating the MCS index table by using the selected MCS index;
  • the transmitter is further configured to send, by using high layer signaling, the MCS index table generated by the processor to the user equipment; or
  • the processor is further configured to receive from each pre-stored MCS according to a scenario in which the user equipment is located Determining the MCS index table in the reference table;
  • the transmitter is further configured to send, by using the high layer signaling, the MCS index table identifier of the MCS index table determined by the processor to the user equipment, so that the user equipment is identified according to the MCS index table. Determining, by the pre-stored MCS index table, the MCS index table; or the processor, configured to select at least the user equipment from the MCS format table according to a scenario in which the user equipment is located An MCS index that generates the MCS bit table for the selected MCS index;
  • the transmitter is configured to send, by the high layer signaling, the MCS bit table generated by the processor to the user equipment, so that the user equipment generates the MCS index table according to the MCS bit table.
  • the high-layer signaling sent by the transmitter further carries an effective time, where The startup time of the MCS index table;
  • the processor is further configured to start the MCS index table simultaneously with the user equipment according to the effective time, so that the MCS index table is valid.
  • the base station further includes:
  • a receiver configured to receive a configuration success response message sent by the user equipment, where the configuration success response message is used to indicate that the MCS index table configuration of the user equipment is successful, and is started after sending the configuration success response message;
  • the processor is configured to start the MCS index table after the receiver receives the configuration success response message sent by the user equipment, so that the MCS index table is valid.
  • the processor is further configured to detect the user If the scene in which the device is located changes, reselect the MCS index.
  • the processor is further configured to select at least one MCS index from the MCS format table, and generate the MCS index table by using the selected MCS index.
  • the transmitter is further configured to send the MCS index table to each user equipment by using a broadcast message; or
  • the processor is further configured to determine, according to the pre-stored MCS index table, the MCS index table, where the transmitter is further configured to send, by using a broadcast message, an MCS index table identifier of the MCS index table to each Determining, by the user equipment, the MCS index table from each of the pre-stored MCS index tables according to the MCS index table identifier; or
  • the processor is further configured to select at least one MCS index from the MCS format table, and generate the MCS bit table by using the selected MCS index;
  • the transmitter is further configured to send the MCS bit table to each of the user equipments by using a broadcast message, so that each of the user equipments generates the MCS index table according to the MCS bit table.
  • the embodiment of the present invention provides a modulation and coding format selection method, a user equipment, and a base station.
  • the user equipment performs multi-level indexing on the valid MCS index table and the MCS format table according to the currently received first MCS index, and determines the modulation order.
  • Number and transport block size index so that when the MCS format is large and the size of the MCS index exceeds the allowable MCS index size in each physical layer signaling, the MCS that meets the requirements can be selected without changing the physical layer signaling or message. the goal of.
  • 1 is a MCS probability density function diagram of a user equipment in different motion states according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for selecting a modulation and encoding format according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a modulation and coding format selection method according to still another embodiment of the present invention
  • FIG. 4 is a signaling diagram of a modulation and coding format selection method according to still another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a user equipment according to still another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a base station according to still another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a user equipment according to still another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a user equipment according to still another embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a base station according to still another embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a base station according to still another embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
  • the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • Table 0 is a prior art MCS information table.
  • MCS Index MCS index
  • Modulation Order Modulation Order
  • TBS Transport Block Size
  • TBS Index Modulation Mode
  • the UE and the eNB pre-store the table. When the eNB notifies the UE of the MCS used by the data, the UE is informed of the corresponding MCS index, and the UE selects the corresponding modulation order and the transport block size according to the MCS index.
  • the MCS format that can be used by the user equipment is not evenly distributed on all MCS formats in a specific scenario, but is obviously concentrated in a small range.
  • 1 is an MCS probability density function of a user equipment in different motion states according to an embodiment of the present invention; Number map. As shown in Figure 1, the abscissa is the MCS index, and the ordinate is the probability density.
  • the used MCS index is concentrated in the range of 5 ⁇ 10; when the user equipment moves at medium speed, the used MCS The index is concentrated in 15 ⁇ 20; when the user equipment moves at a low speed, the MCS index used is concentrated in 25 ⁇ 30. Therefore, different scenarios may be divided according to certain characteristics of the user equipment, such as a motion state, and a small-range MCS index suitable for the user equipment is selected from the MCS format table in each scenario.
  • the MCS index transmitted in the DCI still uses 5 bits, and a small-range MCS index suitable for the user equipment is selected from the MCS format table to form an MCS index table, and a high-level letter is obtained.
  • the MCS index table is sent to the user equipment by the broadcast message or the like, and both the user equipment and the base station are configured to validate the MCS index table.
  • the user equipment After receiving the MCS, for example, after receiving the MCS carried in the DCI, the user equipment performs multi-level indexing according to the MCS, that is, first searches the MCS index table, and then searches the MCS format table to determine the modulation order and the transport block size.
  • the index communicates with the transport block size index according to the determined modulation order.
  • each user equipment can perform high-level signaling interaction with the base station, which can be referred to as a specific scenario; user equipments in the coverage area of the same base station can receive
  • the broadcast message sent by the base station can be referred to as a public scenario.
  • the user equipment is divided into different scenarios according to certain features of the user equipment. For example, in a specific scenario, the user equipment is divided into medium speed according to the moving speed of the user equipment. The low-speed or high-speed scene; or, the user equipment in the public scene is divided into scenes again. For example, in a public scene, the scene is specifically divided according to the average quality of the signal quality in the coverage area.
  • the scenes described in the present application are sub-scenarios obtained after dividing a scene again for a specific scene or a common scene.
  • the executor of the embodiment is a user equipment, and is applicable to when the MCS format is large, and the MCS that satisfies the requirement is selected without changing the physical layer signaling or the message.
  • the embodiment includes the following steps: 101. Receive a first modulation and coding format MCS index sent by the base station.
  • the user equipment receives the first MCS index carried by the base station and is carried in the scheduling information, for example, the downlink control information DCI that is sent by the base station and carries the first MCS index.
  • the size of the first MCS index is 5 bits. The value ranges from 0 to 31 as an example. 102. Search, in the valid MCS index table, a second MCS index corresponding to the first MCS index.
  • each second MCS index is a small-range MCS index applicable to the user equipment
  • each first MCS index is a mapping of the second MCS index. Obtained after 0 ⁇ 31.
  • 256QAM 256 Quadrature Amplitude Modulation
  • 64 MCS formats are required.
  • the second MCS index ranges from 0 to 63.
  • the transmission mode applied by the user equipment is an odd-numbered MCS index of 0 to 40, that is, 1, 3, 5, 7, ...
  • Table 1 is an index table for storing a correspondence between a first MCS index and a second MCS index in the embodiment of the present invention.
  • the second MCS index corresponding to the first MCS index is searched in the valid MCS index table. For example, when the first MCS index is 10001, that is, 17, the second MCS index corresponding to the first MCS index is determined by looking up the MCS index table, that is, 35.
  • the MCS format table stores all or preset MCS indexes and their modulation orders and transport block size indexes.
  • the user equipment and the base station store the MCS format table in advance. With the above steps The scene of the 256-sequence Amplitude Modulation (256QAM) is added as an example.
  • the MCS format table in the embodiment of the present invention is shown in Table 2.
  • Table 2 is a table of MCS formats in the embodiment of the present invention.
  • the user equipment searches for the modulation order and the transport block size index corresponding to 35 in the MCS format table according to the second MCS index 35.
  • the modulation order is 8th order and the TBS Index is 32.
  • the user equipment adopts the modulation order and the transport block size corresponding to the found second MCS index.
  • the index communicates with the base station.
  • the present invention is described in detail by taking an example of 64 types of MCS formats in the scenario, and the transmission mode of the user equipment is an odd-numbered MCS index of 0 to 40.
  • the present invention does not For example, in other feasible implementation manners, there may be multiple MCS formats, such as 128, 256, etc., and the transmission mode applicable to the user equipment is 25 ⁇ 40, 50 ⁇ 55, and the modulation order corresponding to the index is 50 ⁇ 55. And transport block size index, etc.
  • the user equipment performs multi-level indexing on the valid MCS index table and the MCS format table according to the currently received first MCS index, and determines the modulation order and the transport block size index.
  • the MCS index is larger and the size of the MCS index exceeds the allowed MCS index size in each physical layer signaling, the MCS that meets the requirement can be selected without changing the physical layer signaling or the message. For example, when there are 64 items in the MCS index, 32 items commonly used in the current scene can be selected as the second MCS index, and 0 ⁇ 31 is sequentially mapped to obtain the first MCS index, and the second MCS index is finally determined according to the first MCS index.
  • the user equipment and the base station save the MCS format table in advance, and the MCS format table can store all or preset MCS indexes and their modulation orders and transport block size indexes, which are flexible.
  • the MCS format table is expanded, and the MCS index does not need to be limited to the set number of bits. For example, it is not necessarily limited to 0-31. It is not necessary to delete some original MCS indexes and their modulation order and transport block size index. Adding a new MCS index and its modulation order and transport block size index directly, the operation process is simple and flexible.
  • the user equipment before the second MCS index corresponding to the first MCS index is searched in the valid MCS index table, the user equipment performs high-level signaling interaction with the base station, for example, the user equipment is in radio resource control (Radio resource control, For example, RRC) connection establishment, RRC connection reestablishment, and user equipment switching, the MCS index table needs to be configured at the physical layer, and the MCS index table is started with the base station, so that the MCS index table is valid, and each sub-scene of the specific scene
  • the user equipment performs high-level signaling interaction with the base station, and the MCS index table configured by the base station for each user equipment is generally different.
  • the user equipment may configure the MCS index table at a physical layer in the following manner.
  • the user equipment receives the MCS index table sent by the base station through the high layer signaling, for example, the MCS index table shown in Table 1 above, and directly configures the MCS index table at the physical layer. Specifically, the user equipment may receive the MCS index table every time it communicates with the base station; or if the sub-scene of the user equipment does not change, the communication is continued to be the same as the MCS index table of the last communication. MCS index table for secondary communication.
  • the MCS index table in each sub-scenario is stored in the user equipment.
  • Each MCS index table has a unique MCS index table identifier that can identify the table.
  • the base station only needs to inform the user device of the MCS index table identifier.
  • the user equipment receives the MCS index table identifier sent by the base station through the high layer signaling. For example, the identifier of the foregoing Table 1 determines the MCS index table from the pre-stored MCS index table according to the MCS index table identifier, and the determined MCS index table is to be determined. Configured at the physical layer.
  • the MCS bit table sent by the base station through the high layer signaling is received, the MCS bit table indicates the selected MCS of the base station, and the MCS index table is generated according to the MCS bit table.
  • the MCS bit table refers to a table selected in the MCS format table that can be used as the second MCS index and is not selected as the second MCS index. Taking Table 1 and Table 2 in the above embodiment as an example, if the transmission mode applied by the user equipment is an odd-numbered MCS cable in the range of 0-40, the base station may select an odd number of 0 to 40 in the MCS format table 2.
  • the MCS index is 1 and the other MCS indexes are identified as 0, and Table 3 is obtained.
  • Table 3 is a table for identifying the selected MCS index in the embodiment of the present invention.
  • the identifiers 0 and 1 in the first column of Table 3 are arranged according to a preset rule, for example, arranged in bytes into an 8 ⁇ 8 binary table (not shown), which is the present embodiment. MCS bit table.
  • the user equipment After receiving the MCS bit table, the user equipment selects the MCS index identified as 1 and maps 0 to 31 in sequence to obtain the above table 1, and then configures the obtained MCS index table in the physical layer.
  • mapping may be started from other data, for example, an algorithm is used to map each first MCS index to 0 to 31, or not to start with 0, but to 0 to 31. Any number, such as 5, begins with Table 4, which is a further MCS index table in an embodiment of the present invention.
  • the user equipment may receive the effective time carried in the high layer signaling according to the high layer signaling sent by the received base station in the process of configuring the MCS index table, and simultaneously start the MCS index table with the base station according to the effective time. In order to make the MCS index table take effect.
  • the effective time is used to indicate the startup time of the MCS index table
  • the high-level signaling may include information indicating the effective time of the frame serial number (SFN), etc., and the user equipment and the base station start the MCS according to the effective time. direction chart.
  • the MCS index table may be synchronously started by the user equipment and the base station in the uplink time when the effective time is carried in the high-level signaling, so that the MCS index table is synchronously started.
  • the user equipment after receiving the high-level signaling, the user equipment sends a configuration success response message to the base station, that is, sends a configuration response (ACK) to the base station, where the user equipment successfully configures the MCS index, and then sends a correct response (ACK) to the base station, where the configuration success response message is configured. And configured to instruct the base station to start the MCS index table after receiving the configuration success response message.
  • the base station After receiving the ACK, the base station considers that the configuration is successful, and the user equipment and the base station start the MCS index table, so that the MCS index table is valid.
  • the user equipment and the base station are selected by using multiple check modes in the embodiment of the present invention.
  • the modulation order is communicated with the transport block size index; otherwise, if the MCS index table fails to be configured at the physical layer, a configuration failure response message is sent to the base station, that is, a Negative Acknowledgement (NACK) is fed back to the base station.
  • NACK Negative Acknowledgement
  • the user equipment can select several fixed MCS formats to transmit ACK/NACK. Each MCS index table includes these fixed MCS indexes, so that the base station can successfully parse the user regardless of which MCS index table is used. The ACK/NACK sent by the device.
  • the synchronization may not be the same time, and synchronization may be performed as long as it does not affect the sequential activation of the execution function.
  • the user equipment receives the broadcast message sent by the base station.
  • the user equipment in the idle state in the area covered by the base station receives the broadcast message sent by the base station, and the related information of the MCS index table or the MCS index table carried in the broadcast message is the same, that is, the information of each user equipment.
  • the MCS index table is the same, and multiple user equipments share the same MCS index table.
  • each user equipment can configure the MCS index table at a physical layer in the following manner.
  • the MCS index table is configured at the physical layer.
  • Manner 5 The MCS index table identifier sent by the receiving base station by using the broadcast message, determining the MCS index table from the pre-stored MCS index table according to the MCS index table identifier, and determining from the pre-stored MCS index table according to the MCS index table identifier
  • the MCS index table is output, and the determined MCS index table is configured at the physical layer.
  • Manner 6 The MCS bit table sent by the base station by using a broadcast message, the MCS bit table indicating the MCS selected by the base station, and generating an MCS index table according to the MCS bit table.
  • the user equipment is a user equipment that has the capability of configuring the MCS index table in the physical layer.
  • the user equipment uses the MCS of the default configuration, just like the traditional user equipment.
  • the index is directly searched for the MCS format table according to the scheduling information, for example, the MCS index in the DCI, and the table is not required to be checked multiple times; otherwise, if the user equipment is enabled to configure the MCS index table in the physical layer, if the user equipment is in the idle state And receiving a broadcast message that is sent by the base station and carrying the information related to the MCS index table; otherwise, if it is in the connected state, the base station is notified by the RRC high-level signaling that it is a user equipment that has the MCS index table configuration function, and receives the carried MCS sent by the base station. RRC high layer signaling for index table related information.
  • FIG. 3 is a flowchart of a method for selecting a modulation and encoding format according to still another embodiment of the present invention.
  • the executor of this embodiment is a base station, and is applicable to the case where the MCS that satisfies the requirement is selected without changing the physical layer signaling or the message when the MCS format is large.
  • the embodiment includes the following steps:
  • the base station selects a first MCS index corresponding to the second MCS index in the valid MCS index table.
  • the following takes the table 1 in the foregoing embodiment of FIG. 2 as an example.
  • the base station determines that the transmission mode applied by the user equipment in the scenario is an odd-numbered MCS index in the range of 0 to 40, that is, 1, 3, and 5 , 7...37, 39, that is, when each second MCS index S is 1, 3, 5, 7, ... 37, 39, a specific second MCS index is selected from the valid MCS index table, and then selected according to The second MCS index selects a first MCS index corresponding to the second MCS index in the valid MCS index table.
  • the size of the first MCS index is 5 bits, and the value ranges from 0 to 31.
  • the base station sends the scheduling information carrying the first MCS index to the user equipment, as follows:
  • the information DCI is such that the user equipment searches for the second MCS index corresponding to the first MCS index in the valid MCS index table, and searches for the modulation order and transmission corresponding to the second MCS index in the MCS format table according to the second MCS index.
  • a block size index where the MCS format table includes at least a modulation order and a transport block size index corresponding to each second MCS index in the index table, and at least one MCS index in the MCS format table is greater than 31.
  • the first MCS index For the description of the first MCS index, the second MCS index, the MCS index table, and the MCS format table in this embodiment, refer to the embodiment shown in FIG. 2, and details are not described herein again.
  • the base station is in communication based on a modulation order and a transport block size index corresponding to the user equipment using the second MCS index.
  • the base station sends a first MCS index to the user equipment, so that the user equipment performs multi-level indexing on the valid MCS index table and the MCS format table according to the first MCS index, and determines the modulation.
  • Order and transport block size index when the MCS format is large and the size of the MCS index exceeds the allowable MCS index size in each physical layer signaling, the MCS that meets the requirements can be selected without changing the physical layer signaling or message. the goal of.
  • the user equipment and the base station save the MCS format table in advance, and the MCS format table can store all or preset MCS indexes and their modulation orders and transport block size indexes, which can be flexibly
  • the MCS format table can store all or preset MCS indexes and their modulation orders and transport block size indexes, which can be flexibly
  • directly add a new MCS index and its modulation order and Transport block size index directly add a new MCS index and its modulation order and Transport block size index, the operation process is simple and flexible.
  • the base station and the user equipment before the first MCS index corresponding to the second MCS index is selected in the valid MCS index table, the base station and the user equipment perform high-level signaling interaction, such as establishing an RRC connection establishment, reestablishing an RRC connection, and In the RRC reconfiguration and handover, the MCS index table needs to be configured on the physical layer, and the MCS index table is started with the user equipment, so that the MCS index table is valid.
  • the base station and each user equipment perform high-level Signaling interaction, the MCS index table configured by the base station for each user equipment.
  • the base station may configure the MCS index table at a physical layer in the following manner.
  • the user equipment establishes a connection with the base station, and the base station can sense the user equipment, The scene is determined based on the uplink signal quality of the user equipment, and the like.
  • the base station selects at least one MCS index suitable for the scene in which the user equipment is located from the pre-configured MCS format table according to the scenario in which the user equipment is located, and maps the selected MCS index to 0.
  • the MCS index table is generated, and the generated MCS index table is configured at the physical layer, and the MCS index table is sent to the user equipment by using the high layer signaling.
  • the base station may send the MCS index table every time it communicates with the user equipment; or, if the sub-scene of the user equipment does not change, and the communication is the same as the MCS index table of the last communication, the last use continues. MCS index table for communication.
  • the MCS index table of each user equipment may be different, that is, each second MCS index of each user equipment in the sub-scenario may be different, and the base station may use a certain feature information of the user equipment, such as a moving speed, from
  • the MCS format table selects the range of values of the MCS index to which each user equipment applies, such as high speed, medium speed, low speed, and the like.
  • the value range of the MCS index applicable to the user equipment A may be, for example, 25 to 38
  • the value range of the MCS index applicable to the user equipment B may be 23, for example.
  • the base station generates an MCS index table for the user equipment A and the user equipment B at the physical layer.
  • the base station can also select a suitable MCS index for the user equipment and generate an MCS index table according to the scenario in which the user equipment is located, the feature information of the user equipment, the geographical location information, and the like.
  • the base station determines the MCS index table suitable for the scenario from the pre-stored MCS index table according to the scenario in which the user equipment is located, and configures the determined MCS index table in the physical layer, which is determined by the high layer signaling.
  • the MCS index table identifier of the MCS index table is sent to the user equipment, so that the user equipment determines the MCS index table from the pre-stored MCS index tables according to the MCS index table identifier.
  • the base station user equipment can generate the MCS index table in the scenario in advance.
  • the MCS index table is configured and configured on the physical layer, and the identifier of the MCS index table is sent to the user through the high layer signaling.
  • the device may also send all the MCS index tables to the user equipment at one time, and only need to inform the user of the MCS index table identifier of the MCS index applicable to the device.
  • the implementation process of the MCS index table in each scenario is generated for the user equipment, and the foregoing method 1 is omitted, and details are not described herein.
  • the base station selects at least one MCS index from the MCS format table for the user equipment according to the scenario in which the user equipment is located, generates the MCS bit table by using the selected MCS index, and sends the MCS bit table to the user equipment by using the high layer signaling. So that the user equipment generates MCS according to the MCS bit table. direction chart.
  • the base station may determine the effective time of the MCS index table in the process of configuring the MCS index table in the physical layer, and the effective time is used to indicate the start time of the MCS index table, and the base station carries the effective time in the high layer signaling to send to the The user equipment starts the MCS index table simultaneously with the user equipment according to the effective time to make the MCS index table take effect.
  • the base station may not be consistent with the time when the MCS index table is validated by the user equipment, so that the MCS index table is synchronously started, but the configuration success response message sent by the user equipment is received. After receiving the configuration success response message sent by the user equipment, the user equipment starts the MCS index table to make the MCS index table take effect. The configuration success response message is used to instruct the base station to start the MCS index table after receiving the configuration success response message.
  • the synchronization may not be the same time, and synchronization may be performed as long as it does not affect the sequential activation of the execution function.
  • the base station sends the first MCS index to the user equipment, so that the user equipment searches for the second MCS index corresponding to the first MCS index in the valid MCS index table, and is in the MCS format table according to the second MCS index.
  • the base station Before searching for the modulation order and the transport block size index corresponding to the second MCS index, the base station sends a broadcast message to its coverage area.
  • the area covered by the base station is divided into several geographical areas according to the geographic location, and the base station The geographic area sends a broadcast message carrying related information of the MCS index table or the MCS index table, so that the MCS index table of each user equipment in each geographical area or several geographical areas is the same, and multiple user equipments share the same MCS index table. .
  • the base station can perform MCS selection by:
  • Method 4 Select at least one MCS index from the MCS format table, generate a MCS index table by using the selected MCS index, and send an MCS index table to each user equipment by using a broadcast message.
  • the MCS index table of each user equipment is the same, that is, each user equipment has the same second MCS index in the scenario, and multiple user equipments share the same MCS index table.
  • the area covered by the base station is divided into a plurality of geographical areas according to the geographic location, and the range of the MCS index applicable to the user equipment in each of the geographical areas or the plurality of geographical areas is the same, and the base station can be the user equipment according to the geographical location. Select the applicable MCS index and generate an MCS index table.
  • the MCS index table is determined from the pre-stored MCS index table, and the MCS index table identifier of the MCS index table is sent to each user equipment by using a broadcast message, so that each user equipment identifies from the pre-stored each according to the MCS index table identifier.
  • the MCS index table is determined in the MCS index table.
  • the method 6 select at least one MCS index from the MCS format table, generate a MCS bit table from the selected MCS index, and send the MCS bit table to each user equipment by using a broadcast message. So that each user equipment generates an MCS index table according to the MCS bit table.
  • the base station may also change the configuration of the public scene in the broadcast message. For example, the base station may estimate the overall situation in the coverage area according to the signal quality of a large number of connected users in the coverage area. The change changes the configuration of the MCS index table for the public scene in the broadcast message.
  • the protocol stack of the wireless interface is divided into a user plane protocol stack and a control plane protocol stack, and a signaling radio bearer (Signaling Radio Bearer, SRB) is established on the control plane protocol stack, which is mainly used for transmitting control signaling, and a user plane protocol.
  • SRB Signaling Radio Bearer
  • a Data Radio Bearer (DRB) is established on the stack to transmit service data.
  • the control plane protocol stack of the user equipment includes: a Non-Access Stratum (NAS) layer, a Radio Resource Control (RRC) layer, a Packet Data Convergence Protocol (PDCP) layer, and a wireless chain.
  • NAS Non-Access Stratum
  • RRC Radio Resource Control
  • PDCP Packet Data Convergence Protocol
  • Radio Link Control (RLC) layer Radio Link Control (RLC) layer, Medium Link Control (MAC) layer, Physical (PHY) layer;
  • Base station mainly includes RRC layer, PDCP layer, RLC layer, MAC layer, PHY layer .
  • RLC Radio Link Control
  • MAC Medium Link Control
  • PHY Physical
  • Base station mainly includes RRC layer, PDCP layer, RLC layer, MAC layer, PHY layer .
  • 4 is a signaling diagram of a method for selecting a modulation and coding format according to still another embodiment of the present invention.
  • the present invention is specifically described by using a high-level signaling interaction between a base station and a user equipment, and carrying the effective time in the high-layer signaling, and only the RRC layer and the PHY layer are shown in the user equipment and the base station. .
  • the embodiment includes the following steps:
  • the base station selects an MCS index from the MCS format table, and the selected MCS index is a subset of the MCS index in the MCS format table.
  • the base station selects, in the RRC layer, a scenario suitable for the user equipment in the scenario where the user equipment is located.
  • each selected MCS index is a subset of the MCS index in the MCS format table.
  • the base station interacts with the user equipment for high layer signaling.
  • the base station may send related information of the MCS index table to the user equipment.
  • the MCS index table is directly generated and sent to the user equipment; or, by using the foregoing manner 2, the MCS index table identifier is sent to the user equipment; or, by using the foregoing manner 3, the MCS index bit table is sent, and the high-level letter is sent.
  • the order can carry the effective time.
  • the base station and the user equipment each configure an MCS index table at a physical layer.
  • this step includes the following sub-steps:
  • the user equipment configures an MCS index table at a physical layer.
  • the base station configures an MCS index table at a physical layer.
  • the base station and the user equipment make the MCS index table take effect according to the effective time.
  • this step includes the following sub-steps:
  • the user equipment makes the MCS index table take effect according to the effective time
  • the base station makes the MCS index table take effect according to the effective time.
  • the base station and the user equipment use the multiple table lookup manner in the embodiment of the present invention to transmit signaling and data.
  • FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment provided in this embodiment is an apparatus embodiment corresponding to the embodiment of FIG. 2 of the present invention, and the specific implementation process is not described herein again.
  • the user equipment 100 provided in this embodiment specifically includes:
  • the receiving module 11 is configured to receive a first modulation and coding format MCS index sent by the base station, where the first searching module 12 is configured to search, in the valid MCS index table, the second MCS that is received by the receiving module 11 and corresponds to the first MCS index.
  • the second search module 13 is configured to search, in the MCS format table, the modulation order and the transport block size index corresponding to the second MCS index according to the second MCS index searched by the first search module 12, where the MCS index table
  • the second MCS index is a subset of the indexes in the MCS format table
  • the communication module 14 is configured to communicate with the base station by using a modulation order and a transport block size index corresponding to the second MCS index searched by the second lookup module 13.
  • the user equipment performs multi-level indexing on the valid MCS index table and the MCS format table according to the currently received first MCS index, and determines the modulation order and transmission.
  • the block size index can be used to select the MCS that meets the requirements without changing the physical layer signaling or message when the MCS format is larger and the size of the MCS index exceeds the allowed MCS index size in each physical layer signaling. For example, when there are 64 items in the MCS index, the 32 items commonly used in the current scenario can be selected as the second MCS index, and 0 to 31 are sequentially mapped to obtain the first MCS index, and the second MCS index is finally determined according to the first MCS index.
  • the user equipment and the base station save the MCS format table in advance, and the MCS format table can store all or preset MCS indexes and their modulation orders and transport block size indexes, which can be flexibly
  • the MCS format table is expanded, and the MCS index does not need to be limited to the set number of bits. For example, it is not necessarily limited to 0-31. It is not necessary to delete some original MCS indexes and their modulation order and transport block size index. Adding a new MCS index and its modulation order and transport block size index directly, the operation process is simple and flexible.
  • FIG. 6 is a schematic structural diagram of a user equipment according to still another embodiment of the present invention. As shown in FIG. 6, the user equipment 200 of this embodiment is based on FIG. 5, and further includes:
  • the configuration module 15 is configured to configure the MCS index table at the physical layer
  • the startup module 16 is configured to start the MCS index table of the configuration module configuration 15 in synchronization with the base station, so that the MCS index table is valid.
  • the receiving module 11 is configured to receive an MCS index table sent by the base station by using high layer signaling; or
  • the receiving module 11 is further configured to receive the MCS index table identifier sent by the base station by using the high layer signaling.
  • the user equipment 200 further includes: a processing module 17 configured to: according to the MCS index table identifier received by the receiving module 11, from the pre-stored MCS index table. Determine the MCS index table; or,
  • the receiving module 11 is further configured to receive an MCS bit table sent by the base station by using the high layer signaling; the processing module 17 is configured to instruct the MCS selected by the base station according to the MCS bit table received by the receiving module 11 to generate an MCS index table according to the MCS bit table.
  • the high-level information received by the receiving module 11 further carries an effective time, which is used to indicate a startup time of the MCS index table;
  • the startup module 16 is configured to start the MCS index table simultaneously with the base station according to the effective time received by the receiving module 11 to make the MCS index table take effect.
  • the user equipment 200 further includes:
  • the sending module 18 is configured to send a configuration success response message to the base station, where the configuration success response message is used to instruct the base station to start the MCS index table after receiving the configuration success response message;
  • the startup module 16 is specifically configured to start the MCS index table synchronously with the base station after the sending module 18 sends the configuration success response message to the base station, so that the MCS index table is valid.
  • the receiving module 11 is further configured to: receive an MCS index table sent by the base station by using a broadcast message; or
  • the receiving module 11 is further configured to receive the MCS index table identifier sent by the base station by using the broadcast message; the processing module 17 determines the MCS index table from the pre-stored MCS index table according to the MCS index table identifier received by the receiving module 11; or
  • the receiving module 11 is further configured to receive an MCS bit table sent by the base station by using a broadcast message, where the MCS bit table indicates the MCS selected by the base station;
  • the processing module 17 is configured to generate an MCS index table according to the MCS bit table received by the receiving module 11.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station provided in this embodiment may be configured on the user equipment, or may be the user equipment itself, and is an apparatus embodiment corresponding to the embodiment of FIG. 3 of the present invention. The specific implementation process is not described herein.
  • the base station 300 provided in this embodiment includes:
  • the storage module 20 is configured to store the modulation and coding format in effect.
  • the selecting module 21 is configured to select, in the valid MCS index table stored by the storage module 20, a first MCS index corresponding to the second MCS index;
  • the sending module 22 is configured to send, to the user equipment, the first MCS index selected by the selecting module 21, so that the user equipment searches for the second MCS index corresponding to the first MCS index in the valid MCS index table, and according to the second MCS index. Locating, in the MCS format table, a modulation order and a transport block size index corresponding to the second MCS index, where the second MCS index in the MCS index table is a subset of the index in the MCS format table;
  • the communication module 23 is configured to communicate with the user equipment by using a modulation order corresponding to the second MCS index and a transport block size index.
  • the base station sends the first MCS index to the user equipment, so that the user equipment performs multi-level indexing on the valid MCS index table and the MCS format table according to the first MCS index, and determines the modulation order and the transport block.
  • Size index when the MCS format is larger and the size of the MCS index exceeds the allowed MCS index size in each physical layer signaling, the MCS that meets the requirements can be selected without changing the physical layer signaling or message.
  • the user equipment and the base station save the MCS format table in advance, and the MCS format table can store all or preset MCS indexes and their modulation orders and transport block size indexes, which can be flexibly applied to the MCS format.
  • Table expansion, etc. do not have to limit the MCS index must be 0 ⁇ 31, without adding some original MCS index and its modulation order and transport block size index, directly add a new MCS index and its modulation order and transport block size index The operation process is simple and flexible.
  • FIG. 8 is a schematic structural diagram of a base station according to still another embodiment of the present invention. As shown in FIG. 8, the base station 400 of this embodiment is based on FIG. 7. Further, the base station 400 further includes:
  • a configuration module 24 configured to configure an MCS index table at a physical layer
  • the startup module 25 is configured to start the MCS index table in synchronization with the user equipment, so that the MCS index table is valid.
  • the base station 400 further includes:
  • the selecting module 21 is configured to select at least one MCS index for the user equipment from the MCS format table according to the scenario in which the user equipment is located;
  • the base station 400 further includes a generating module 26, configured to generate an MCS index table by using the MCS index selected by the selecting module 21;
  • the sending module 22 sends the MCS index table to the user equipment through high layer signaling.
  • the selecting module 21 is configured to determine an MCS index table from each pre-stored MCS index table according to a scenario in which the user equipment is located;
  • the sending module 22 is configured to send the MCS index table identifier of the MCS index table to the user equipment by using the high layer signaling, so that the user equipment determines the MCS index table from the pre-stored MCS index tables according to the MCS index table identifier.
  • the selecting module 21 is configured to select at least one MCS index for the user equipment from the MCS format table according to the scenario in which the user equipment is located;
  • the generating module 26 is configured to generate an MCS bit table by using the MCS index selected by the selecting module 21, and send the MCS bit table to the user equipment by using the high layer signaling, so that the user equipment generates the MCS index table according to the MCS bit table. .
  • the first information sent by the sending module 22 further carries an effective time, which is used to indicate a startup time of the MCS index table;
  • the startup module 25 is configured to start the MCS index table simultaneously with the user equipment according to the effective time, so that the MCS index table is valid.
  • the base station 400 further includes:
  • the receiving module 27 is configured to receive a configuration success response message sent by the user equipment, where the configuration success response message is used to indicate that the MCS index table configuration of the user equipment is successful, and is started after the configuration configuration success response message is sent;
  • the startup module 25 is configured to start the MCS index table in synchronization with the user equipment after the receiving module 27 receives the configuration success response message, so that the MCS index table is valid.
  • the base station 400 further includes:
  • the detecting module 28 is configured to reselect the MCS cable I if it detects that the scene in which the user equipment is located changes.
  • the base station 400 further includes:
  • the processing module 29 is configured to select at least one MCS index from the MCS format table, and generate a MCS index table by using the selected MCS index;
  • the sending module 22 is configured to send an MCS index table to each user equipment by using a broadcast message; or, the processing module 29 is configured to determine an MCS index table from each pre-stored MCS index table; and the sending module 22 is configured to index the MCS by using a broadcast message.
  • the MCS index table identifier of the table is sent to each user equipment, so that each user equipment determines the MCS index table from the pre-stored MCS index tables according to the MCS index table identifier; or
  • the processing module 29 is configured to select at least one MCS index from the MCS format table, and generate a MCS bit table by using the selected MCS index;
  • the sending module 22 is configured to send the MCS bit table to each user equipment by using a broadcast message, so that each user equipment generates an MCS index table according to the MCS bit table.
  • FIG. 9 is a schematic structural diagram of a user equipment according to still another embodiment of the present invention.
  • the user equipment 500 provided in this embodiment includes:
  • a receiver 31 configured to receive a first MCS index sent by the base station
  • the processor 32 is configured to search, in the valid MCS index table, a second MCS index corresponding to the first MCS index received by the receiver, and search for a modulation step corresponding to the second MCS index in the MCS format table according to the second MCS index.
  • the processor 32 is further configured to: configure an MCS index table at the physical layer, and start an MCS index table configured by the configuration module in synchronization with the base station, so that the MCS index table takes effect.
  • the receiver 31 is further configured to: receive an MCS index table sent by the base station by using high layer signaling; or
  • the receiver 31 is further configured to receive the MCS index table identifier sent by the base station by using the high layer signaling, and the processor 32 determines the MCS index table, the MCS bit, from the pre-stored MCS index table according to the MCS index table identifier received by the receiver 31.
  • the table indicates the selected MCS of the base station; or,
  • the receiver 31 is further configured to receive an MCS bit table sent by the base station through high layer signaling, and the processor 32 generates an MCS index table according to the MCS bit table received by the receiver 31.
  • the high-level information received by the receiver 31 also carries an effective time, which is used to indicate the startup time of the MCS index table;
  • the processor 32 is configured to start the MCS trigger table with the base station according to the effective time received by the receiver, so that the MCS index table is valid.
  • FIG. 10 is a schematic structural diagram of a user equipment according to still another embodiment of the present invention.
  • the user equipment 600 of this embodiment is based on FIG. 9.
  • the user equipment 600 further includes: a transmitter 33, configured to send a configuration success response message to the base station, where the configuration success response message is used to indicate After receiving the configuration success response message, the base station starts the MCS index table.
  • the processor 32 is specifically configured to start the MCS index table synchronously with the base station after the transmitter 33 sends the configuration success response message to the base station, so that the MCS index table is valid.
  • the receiver 31 is further configured to: receive an MCS index table sent by the base station by using a broadcast message; or
  • the receiver 31 is further configured to receive, by the base station, the MCS index table identifier sent by the broadcast message, where the processor 32 is configured to determine, according to the MCS index table identifier, the MCS index table from the pre-stored MCS index tables; or
  • the receiver 31 is configured to receive an MCS bit table sent by the base station by using a broadcast message, where the MCS bit table indicates the selected MCS of the base station;
  • the processor 32 is configured to generate an MCS index table based on the MCS bit table.
  • FIG. 11 is a schematic structural diagram of a base station according to still another embodiment of the present invention.
  • the base station 700 provided in this embodiment includes:
  • the storage 40 is configured to store an effective MCS index table.
  • the processor 41 is configured to select, in the effective modulation and coding format MCS index table stored in the memory 40, a first MCS index corresponding to the second MCS index;
  • the transmitter 42 is configured to send, to the user equipment, the first MCS index selected by the processor 41, so that the user equipment searches the valid MCS index table for the second MCS index corresponding to the first MCS index, and according to the second MCS index. Locating, in the MCS format table, a modulation order and a transport block size index corresponding to the second MCS index, where the second MCS index in the MCS index table is a subset of the index in the MCS format table;
  • the processor 41 is further configured to communicate with the user equipment by using a modulation order corresponding to the second MCS index and a transport block size index.
  • the processor 41 is further configured to configure the MCS index table at the physical layer, and start the MCS index table synchronously with the user equipment, so that the MCS index table takes effect.
  • processor 41 is further configured to: select at least one MCS index from the MCS format table for the user equipment according to the scenario in which the user equipment is located, and generate the MCS index table by using the selected MCS index;
  • the transmitter 42 is further configured to send the MCS index table to the user equipment by using the high layer signaling; or the processor 41 is further configured to determine the MCS index table from the pre-stored MCS index tables according to the scenario in which the user equipment is located;
  • the transmitter 42 is further configured to send the MCS index table identifier of the MCS index table to the user equipment by using the high layer signaling, so that the user equipment determines the MCS index table from the pre-stored MCS index tables according to the MCS index table identifier; or
  • the processor 41 is further configured to select at least one MCS index for the user equipment from the MCS format table according to the scenario in which the user equipment is located, and generate the MCS bit table by using the selected MCS index;
  • the transmitter 42 is further configured to send the MCS bit table to the user equipment through high layer signaling, so that the user equipment generates the MCS index table according to the MCS bit table.
  • the high-level signaling sent by the transmitter 42 further carries an effective time for indicating the startup time of the MCS index table
  • the processor 41 is further configured to start the MCS index table simultaneously with the user equipment according to the effective time, so that the MCS index is used.
  • the form is in effect.
  • FIG. 12 is a schematic structural diagram of a base station according to still another embodiment of the present invention.
  • the base station 800 of this embodiment is based on FIG. 11.
  • the base station 800 further includes:
  • the receiver 43 is configured to receive a configuration success response message sent by the user equipment, where the configuration success response message is used to indicate that the MCS index table configuration of the user equipment is successful and is started after sending the configuration success response message;
  • the processor 41 is configured to start the MCS index table after the receiver receives the configuration success response message sent by the user equipment, so that the MCS index table is valid.
  • the processor 41 is further configured to reselect the MCS index if it detects that the scene in which the user equipment is located changes.
  • the user equipment is at least one
  • the processor 41 is further configured to: select at least one MCS index from the MCS format table, and generate a MCS index table by using the selected MCS index;
  • the transmitter 42 is further configured to send an MCS index table to each user equipment by using a broadcast message; or, the processor 41 is further configured to determine an MCS index table from each pre-stored MCS index table; the transmitter 42 is further configured to use a broadcast message
  • the MCS index table identifier of the MCS index table is sent to each user equipment, so that each user equipment determines the MCS index table from the pre-stored MCS index tables according to the MCS index table identifier; or
  • the processor 41 is further configured to select at least one MCS index from the MCS format table, which will be selected
  • the MCS index generates an MCS bit table
  • the transmitter 42 is further configured to send the MCS bit table to each user equipment by using a broadcast message, so that each user equipment generates an MCS index table according to the MCS bit table.

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Abstract

本发明实施例提供一种调制与编码格式选择方法、用户设备及基站,该方法包括:用户设备根据当前接收到的第一MCS索引,对生效的MCS索引表、MCS格式表进行多级索引,确定出调制阶数和传输块大小索引,实现当MCS格式较多、MCS索引的大小超过各物理层信令中允许的MCS索引大小时,无需改动物理层信令或消息等即可选择出满足需求的MCS的目的。

Description

调制与编码格式选择方法、 用户设备及基站 技术领域
本发明实施例涉及无线通信技术, 尤其涉及一种调制与编码格式选择方 法、 用户设备及基站。 背景技术
长期演进系统(Long Term Evolution, LTE)中,通过演进型基站(eNodeB, eNB )对用户设备(User Equipment, UE)进行调度以实现上下行数据的传输。 以 eNB向 UE发送下行数据为例, 数据传输过程中, eNB通过物理下行控制 信道 (Physical Downlink Control Channel, PDCCH) 下发携带调制与编码格 式 (Modulation and Coding scheme, MCS ) 等接收数据相关信息的下行控制 信息 (Downlink Control Information, DCI) , UE根据该 DCI到物理下行共 享信道 (Physical Downlink Shared Channel, PDSCH) 中接收数据。
为了满足 MCS的新需求, 需不断的扩展 MCS索引, 但是每次扩展都会 造成物理层信令和消息等的改动, 改动过程复杂且不易操作。 发明内容
本发明实施例提供一种调制与编码格式选择方法、 用户设备及基站, 以 实现当 MCS超过比特数所映射的索引数量时,无需改动物理层信令或消息等 即可选择出满足需求的 MCS的目的。
第一个方面, 本发明实施例提供一种调制与编码格式 MCS选择方法,包 括:
接收基站发送的第一调制与编码格式 MCS索引;
在生效的 MCS索引表中查找与所述第一 MCS索引对应的第二 MCS索 引;
根据所述第二 MCS索引在 MCS格式表中查找与所述第二 MCS索引对 应的调制阶数和传输块大小索引, 其中, 所述 MCS索引表中的第二 MCS索 引为所述 MCS格式表中索引的子集; 采用所述第二 MCS索引对应的调制阶数和传输块大小索引与所述基站 进行通信。
在第一个方面的第一种可能的实现方式中,所述在生效的 MCS索引表中 查找与所述第一 MCS索引对应的第二 MCS索引之前, 还包括:
在物理层配置所述 MCS索引表;
与所述基站同步启动所述 MCS索引表, 以使得所述 MCS索引表生效。 结合第一个方面的第一种可能的实现方式, 在第一个方面的第二种可能 的实现方式中, 所述在物理层配置所述 MCS索引表之前, 还包括:
接收所述基站通过高层信令发送的所述 MCS索引表; 或者,
接收所述基站通过高层信令发送的 MCS索引表标识, 根据所述 MCS索 引表标识, 从预存的各 MCS索引表中确定出所述 MCS索引表; 或者, 接收所述基站通过高层信令发送的 MCS位表, 所述 MCS位表指示所述 基站选定的 MCS, 根据所述 MCS位表, 生成所述 MCS索引表。
结合第一个方面的第二种可能的实现方式, 在第一个方面的第三种可能 的实现方式中,所述高层信令中还携带生效时间,用于指示所述 MCS索引表 的启动时间;
所述用户设备与所述基站同步启动所述 MCS索引表, 包括:
所述用户设备根据所述生效时间, 与所述基站同时启动所述 MCS 索引 表, 以使得所述 MCS索引表生效。
结合第一个方面的第二种可能的实现方式, 在第一个方面的第四种可能 的实现方式中, 所述在物理层配置所述 MCS索引表之后, 还包括:
向所述基站发送配置成功响应消息, 所述配置成功响应消息用于指示所 述基站在收到所述配置成功响应消息后启动所述 MCS索引表;
所述与所述基站同步启动所述 MCS索引表, 包括:
向所述基站发送配置成功响应消息后,启动所述 MCS索引表, 以使得所 述 MCS索引表生效。
在第一个方面的第五种可能的实现方式中,所述在生效的 MCS索引表中 查找与所述第一 MCS索引对应的第二 MCS索引之前, 还包括:
接收所述基站通过广播消息发送的所述 MCS索引表; 或者,
接收所述基站通过广播消息发送的 MCS索引表标识, 根据所述 MCS索 引表标识, 从预存的各 MCS索引表中确定出所述 MCS索引表; 或者, 接收所述基站通过广播消息发送的 MCS位表, 所述 MCS位表指示所述 基站选定的 MCS, 根据所述 MCS位表, 生成所述 MCS索引表。
第二个方面, 本发明实施例提供一种调制与编码格式 MCS选择方法, 包括:
在本地存储的生效的调制与编码格式 MCS 索引表中选择对应于第二 MCS索引的第一 MCS索引;
向用户设备发送所述第一 MCS 索引, 以使得所述用户设备在生效的 MCS索引表中查找与所述第一 MCS索引对应的第二 MCS索引,并根据所述 第二 MCS索引在 MCS格式表中查找与所述第二 MCS索引对应的调制阶数 和传输块大小索引, 其中, 所述 MCS索引表中的第二 MCS索引为所述 MCS 格式表中索引的子集;
采用所述第二 MCS索引对应的调制阶数和传输块大小索引与所述用户 设备进行通信。
在第二个方面的第一种可能的实现方式中, 所述在生效的 MCS索引 表中选择对应第二 MCS索引的第一 MCS索引之前, 还包括:
在物理层配置所述 MCS索引表;
与所述用户设备同步启动所述 MCS索引表, 以使得所述 MCS索引表生 效。
结合第二个方面的第一种可能的实现方式, 在第二个方面的第二种可能 的实现方式中, 所述基站在物理层配置所述 MCS索引表之前, 还包括: 根据所述用户设备所处的场景,从所述 MCS格式表中为所述用户设备选 择至少一项 MCS索引, 将选定的所述 MCS索引生成所述 MCS索引表, 通 过高层信令向所述用户设备发送所述 MCS索引表; 或者,
根据所述用户设备所处的场景, 从预存的各 MCS 索引表中确定出所述
MCS索引表,通过高层信令将所述 MCS索引表的 MCS索引表标识发送给所 述用户设备,以使所述用户设备根据所述 MCS索引表标识,从预存的各 MCS 索引表中确定出所述 MCS索引表; 或者,
根据所述用户设备所处的场景,从所述 MCS格式表中为所述用户设备选 择至少一项 MCS索引, 将选定的所述 MCS索引生成 MCS位表, 通过高层 信令将所述 MCS 位表发送给所述用户设备, 以使得所述用户设备根据所述 MCS位表, 生成所述 MCS索引表。
结合第二个方面的第二种可能的实现方式, 在第二个方面的第三种可能 的实现方式中,所述高层信令中还携带生效时间,用于指示所述 MCS索引表 的启动时间;
所述与所述用户设备同步启动所述 MCS索引表, 包括:
根据所述生效时间, 与所述用户设备同时启动所述 MCS索引表, 以使得 所述 MCS索引表生效。
结合第二个方面的第二种可能的实现方式, 在第二个方面的第四种可能 的实现方式中, 所述在物理层配置所述 MCS索引表之后, 还包括:
接收所述用户设备发送的配置成功响应消息, 所述配置成功响应消息用 于指示所述用户设备的所述 MCS 索引表配置成功并在发送所述配置成功响 应消息后启动;
所述与所述用户设备同步启动所述 MCS索引表, 以使得所述 MCS索引 表生效, 包括:
接收到所述用户设备发送的配置成功响应消息后, 启动所述 MCS 索引 表, 以使得所述 MCS索引表生效。
结合第二个方面的第二种、 第三种或第四种可能的实现方式, 在第二个 方面的第五种可能的实现方式中, 该方法还包括: 若检测到所述用户设备所 处的场景发生变化, 则重新选择 MCS索引。
在第二个方面的第六种可能的实现方式中, 所述用户设备至少为一个; 所述基站向用户设备发送所述第一 MCS索引, 以使得所述用户设备 在生效的 MCS索引表中查找与所述第一 MCS索引对应的第二 MCS索引, 并根据所述第二 MCS索引在 MCS格式表中查找与所述第二 MCS索引对应 的调制阶数和传输块大小索引之前, 还包括:
从所述 MCS格式表中选择至少一项 MCS索引, 将选定的所述 MCS索 引生成所述 MCS索引表, 通过广播消息向各所述用户设备发送所述 MCS索 引表; 或者,
从预存的各 MCS索引表中确定出所述 MCS索引表, 通过广播消息将所 述 MCS索引表的 MCS索引表标识发送给各所述用户设备, 以使各所述用户 设备根据所述 MCS索引表标识,从预存的各 MCS索引表中确定出所述 MCS 索引表; 或者,
从所述 MCS格式表中选择至少一项 MCS索引, 将选定的所述 MCS索 引生成 MCS位表, 通过广播消息将所述 MCS位表发送给各所述用户设备, 以使各所述用户设备根据所述 MCS位表, 生成所述 MCS索引表。
第三个方面, 本发明实施例提供一种用户设备, 包括:
接收模块, 用于接收基站发送的第一调制与编码格式 MCS索引; 第一查找模块,用于在生效的 MCS索引表中查找与所述接收模块接收的 所述第一 MCS索引对应的第二 MCS索引;
第二查找模块,用于根据所述第一查找模块查找的所述第二 MCS索引在
MCS格式表中查找与所述第二 MCS索引对应的调制阶数和传输块大小索引, 其中, 所述 MCS索引表中的第二 MCS索引为所述 MCS格式表中索引的子 集;
通信模块,用于采用所述第二查找模块查找的所述第二 MCS索引对应 的调制阶数和传输块大小索引与所述基站进行通信。
在第三个方面的第一种可能的实现方式中, 所述用户设备还包括: 配置模块, 用于在物理层配置所述 MCS索引表;
启动模块,用于与所述基站同步启动所述配置模块配置的所述 MCS索引 表, 以使得所述 MCS索引表生效。
结合第三个方面的第一种可能的实现方式, 在第三个方面的第二种可能 的实现方式中, 所述接收模块还用于接收所述基站通过高层信令发送的所述 MCS索引表; 或者,
所述接收模块还用于接收所述基站通过高层信令发送的 MCS索引表标 识;
所述用户设备还包括:
处理模块,用于根据所述接收模块接收的所述 MCS索引表标识, 从预存 的各 MCS索引表中确定出所述 MCS索引表; 或者,
所述接收模块,还用于接收所述基站通过高层信令发送的 MCS位表,所 述 MCS位表指示所述基站选定的 MCS;
所述处理模块,用于根据所述接收模块接收的所述 MCS位表, 生成所述 MCS索引表。
结合第三个方面的第二种可能的实现方式, 在第三个方面的第三种可能 的实现方式中, 所述接收模块接收的所述高层信息还携带生效时间, 用于 指示所述 MCS索引表的启动时间;
所述启动模块, 用于根据所述接收模块接收的所述生效时间, 与所述基 站同时启动所述 MCS索引表, 以使得所述 MCS索引表生效。
结合第三个方面的第二种可能的实现方式, 在第三个方面的第四种可能 的实现方式中, 所述用户设备还包括:
发送模块, 用于向所述基站发送配置成功响应消息, 所述配置成功响应 消息用于指示所述基站在收到所述配置成功响应消息后启动所述 MCS 索引 表;
所述启动模块具体用于在所述发送模块向所述基站发送配置成功响应消 息后,与所述基站同步启动所述 MCS索引表, 以使得所述 MCS索引表生效。
在第三个方面的第五种可能的实现方式中, 所述接收模块, 还用于接收 所述基站通过广播消息发送的所述 MCS索引表; 或者,
所述接收模块, 还用于接收所述基站通过广播消息发送的 MCS索引表 标识;
所述处理模块,还用于根据所述接收模块接收的所述 MCS索引表标识, 从预存的各 MCS索引表中确定出所述 MCS索引表; 或者,
所述接收模块, 还用于接收所述基站通过广播消息发送的 MCS位表, 所述 MCS位表指示所述基站选定的 MCS;
所述处理模块,还用于根据所述接收模块接收的所述 MCS位表, 生成所 述 MCS索引表。
第四个方面, 本发明实施例提供一种基站, 包括:
存储模块, 用于存储生效的调制与编码格式 MCS索引表;
选择模块,用于在所述存储模块存储的生效的 MCS索引表中选择对应 于第二 MCS索引的第一 MCS索引;
发送模块,用于向用户设备发送所述选择模块选择的所述第一 MCS索 引,以使得所述用户设备在生效的 MCS索引表中查找与所述第一 MCS索引 对应的第二 MCS索引, 并根据所述第二 MCS索引在 MCS格式表中查找与 所述第二 MCS索引对应的调制阶数和传输块大小索引, 其中, 所述 MCS索 弓 I表中的第二 MCS索引为所述 MCS格式表中索引的子集;
通信模块, 用于采用所述第二 MCS索引对应的调制阶数和传输块大小 索引与所述用户设备进行通信。
在第四个方面的第一种可能的实现方式中, 所述基站还包括: 配置模块, 用于在物理层配置所述 MCS索引表;
启动模块, 用于与所述用户设备同步启动所述配置模块配置的所述 MCS 索引表, 以使得所述 MCS索引表生效。
结合第四个方面的第一种可能的实现方式, 在第四个方面的第二种可能 的实现方式中, 所述选择模块, 用于根据所述用户设备所处的场景, 从所述 MCS格式表中为所述用户设备选择至少一项 MCS索引;
所述基站还包括:
生成模块, 用于将所述选择模块选定的所述 MCS索引生成所述 MCS索 引表;
所述发送模块还用于通过高层信令向所述用户设备发送所述 MCS 索引 表。
结合第四个方面的第一种可能的实现方式, 在第四个方面的第三种可能 的实现方式中, 所述选择模块, 用于根据所述用户设备所处的场景, 从预存 的各 MCS索引表中确定出所述 MCS索引表;
所述发送模块,用于通过高层信令将所述选择模块确定的 MCS索引表的
MCS索引表标识发送给所述用户设备, 以使所述用户设备根据所述 MCS索 引表标识, 从预存的各 MCS索引表中确定出所述 MCS索引表。
结合第四个方面的第一种可能的实现方式, 在第四个方面的第四种可能 的实现方式中, 所述选择模块, 还用于根据所述用户设备所处的场景, 从所 述 MCS格式表中为所述用户设备选择至少一项 MCS索引;
所述生成模块, 还用于将所述选择模块选定的所述 MCS索引生成 MCS 位表;
所述发送模块,还用于通过高层信令将所述生成模块生成的 MCS位表发 送给所述用户设备,以使得所述用户设备根据所述 MCS位表,生成所述 MCS 索引表。 结合第四个方面的第二种、 第三种或第四种可能的实现方式, 在第四个 方面的第五种可能的实现方式中, 所述发送模块发送的第一信息还携带生效 时间, 用于指示所述 MCS索引表的启动时间;
所述启动模块, 用于根据所述发送模块发送的所述生效时间, 与所述用 户设备同时启动所述 MCS索引表, 以使得所述 MCS索引表生效。
结合第四个方面的第二种、 第三种或第四种可能的实现方式, 在第四个 方面的第六种可能的实现方式中, 所述基站还包括:
接收模块, 用于接收所述用户设备发送的配置成功响应消息, 所述配置 成功响应消息用于指示所述用户设备的所述 MCS 索引表配置成功并在发送 所述配置成功响应消息后启动;
所述启动模块, 用于当所述接收模块接收到所述配置成功响应消息后, 与所述用户设备同步启动所述 MCS索引表, 以使得所述 MCS索引表生效。
结合第四个方面的第二种至第六种任一种可能的实现方式, 在第四个方 面的第七种可能的实现方式中, 所述基站还包括:
检测模块, 用于若检测到所述用户设备所处的场景发生变化, 则重新选 择 MCS索引。
在第四个方面的第八种可能的实现方式中, 所述基站还包括:
处理模块, 用于从所述 MCS格式表中选择至少一项 MCS索引, 将选定 的所述 MCS索引生成所述 MCS索引表;
所述发送模块, 还用于通过广播消息向各所述用户设备发送所述处理模 块生成的 MCS索引表; 或者
所述处理模块,用于从预存的各 MCS索引表中确定出所述 MCS索引表; 所述发送模块,还用于通过广播消息将所述处理模块确定的 MCS索引表 的 MCS索引表标识发送给各所述用户设备; 或者
所述处理模块, 用于从所述 MCS格式表中选择至少一项 MCS索引, 将 选定的所述 MCS索引生成 MCS位表;
所述发送模块,还用于通过广播消息将所述处理模块生成的所述 MCS位 表发送给各所述用户设备。
第五个方面, 本发明实施例提供一种用户设备, 包括:
接收器, 用于接收基站发送的第一调制与编码格式 MCS索引; 处理器,用于在生效的 MCS索引表中查找与所述接收器接收的第一 MCS 索引对应的第二 MCS索引, 根据所述第二 MCS索引在 MCS格式表中查找 与所述第二 MCS索引对应的调制阶数和传输块大小索引, 其中, 所述 MCS 索引表中的第二 MCS索引为所述 MCS格式表中索引的子集,采用所述第二 MCS索引对应的调制阶数和传输块大小索引与所述基站进行通信。
在第五个方面的第一种可能的实现方式中, 所述处理器还用于: 在物理层配置所述 MCS索引表,与所述基站同步启动所述配置模块配置 的所述 MCS索引表, 以使得所述 MCS索引表生效。
结合第五个方面的第一种可能的实现方式, 在第五个方面的第二种可能 的实现方式中, 所述接收器还用于: 所述接收器还用于: 接收所述基站通 过高层信令发送的所述 MCS索引表; 或者,
所述接收器还用于, 接收所述基站通过高层信令发送的 MCS 索引表标 识,
所述处理器,还用于根据所述接收器接收的所述 MCS索引表标识,从预 存的各 MCS索引表中确定出所述 MCS索引表; 或者,
所述接收器,还用于接收所述基站通过高层信令发送的 MCS位表,所述 MCS位表指示所述基站选定的 MCS;
所述处理器, 还用于根据所述接收器接收的所述 MCS 位表, 生成所述 MCS索引表。
结合第五个方面的第二种可能的实现方式, 在第五个方面的第三种可能 的实现方式中, 所述接收器接收的所述高层信息还携带生效时间, 用于指 示所述 MCS索引表的启动时间;
所述处理器, 用于根据所述接收器接收的所述生效时间, 与所述基站同 时启动所述 MCS索引表, 以使得所述 MCS索引表生效。
在第五个方面的第四种可能的实现方式中, 所述用户设备还包括: 发射器, 用于向所述基站发送配置成功响应消息, 所述配置成功响应消 息用于指示所述基站在收到所述配置成功响应消息后启动所述 MCS索引表; 所述处理器具体用于在所述发射器向所述基站发送配置成功响应消息 后, 与所述基站同步启动所述 MCS索引表, 以使得所述 MCS索引表生效。
结合第五个方面的第一种可能的实现方式, 在第五个方面的第五种可能 的实现方式中, 所述接收器还用于接收所述基站通过广播消息发送的所述
MCS索引表; 或者,
所述接收器, 还用于接收所述基站通过广播消息发送的 MCS索引表标 识;
所述处理器, 还用于根据所述 MCS索引表标识, 从预存的各 MCS索引 表中确定出所述 MCS索引表; 或者,
所述接收器,还用于接收所述基站通过广播消息发送的 MCS位表,所述 MCS位表指示所述基站选定的 MCS;
所述处理器, 还用于根据所述 MCS位表, 生成所述 MCS索引表。
第六个方面, 本发明实施例提供一种基站, 包括:
存储器, 用于存储生效的 MCS索引表;
处理器, 用于所述在存储器存储的、 且生效的调制与编码格式 MCS 索引表中选择对应于第二 MCS索引的第一 MCS索引;
发射器, 用于向用户设备发送所述处理器选择的第一 MCS索引, 以 使得所述用户设备在生效的 MCS索引表中查找与所述第一 MCS索引对应的 第二 MCS索引, 并根据所述第二 MCS索引在 MCS格式表中查找与所述第 二 MCS索引对应的调制阶数和传输块大小索引, 其中, 所述 MCS索引表中 的第二 MCS索引为所述 MCS格式表中索引的子集;
所述处理器还用于采用所述第二 MCS索引对应的调制阶数和传输块大 小索引与所述用户设备进行通信。
在第六个方面的第一种可能的实现方式中, 所述处理器还用于: 在物理层配置所述 MCS索引表, 与所述用户设备同步启动所述 MCS索 弓 I表, 以使得所述 MCS索引表生效。
结合第六个方面的第一种可能的实现方式, 在第六个方面的第二种可能 的实现方式中, 所述处理器还用于: 根据所述用户设备所处的场景, 从所述 MCS格式表中为所述用户设备选择至少一项 MCS索弓 I, 将选定的所述 MCS 索引生成所述 MCS索引表;
所述发射器, 还用于通过高层信令向所述用户设备发送所述处理器生成 的所述 MCS索引表; 或者,
所述处理器,还用于根据所述用户设备所处的场景,从预存的各 MCS索 引表中确定出所述 MCS索引表;
所述发射器,还用于通过高层信令将所述处理器确定的所述 MCS索引表 的 MCS索引表标识发送给所述用户设备, 以使所述用户设备根据所述 MCS 索引表标识, 从预存的各 MCS索引表中确定出所述 MCS索引表; 或者, 所述处理器,还用于根据所述用户设备所处的场景,从所述 MCS格式表 中为所述用户设备选择至少一项 MCS 索引, 将选定的所述 MCS 索引生成 MCS位表;
所述发射器,用于通过高层信令将所述处理器生成的 MCS位表发送给所 述用户设备, 以使得所述用户设备根据所述 MCS位表, 生成所述 MCS索引 表。
结合第六个方面的第二种可能的实现方式, 在第六个方面的第三种可能 的实现方式中, 所述发射器发送的所述高层信令中还携带生效时间, 用于指 示所述 MCS索引表的启动时间;
所述处理器还用于根据所述生效时间, 与所述用户设备同时启动所述 MCS索引表, 以使得所述 MCS索引表生效。
结合第六个方面的第二种可能的实现方式, 在第六个方面的第四种可能 的实现方式中, 所述基站还包括:
接收器, 用于接收所述用户设备发送的配置成功响应消息, 所述配置成 功响应消息用于指示所述用户设备的所述 MCS 索引表配置成功并在发送所 述配置成功响应消息后启动;
所述处理器用于在所述接收器接收到所述用户设备发送的配置成功响 应消息后, 启动所述 MCS索引表, 以使得所述 MCS索引表生效。
结合第六个方面的第二种、 第三种或第四种可能的实现方式, 在第六 个方面的第五种可能的实现方式中,所述处理器还用于若检测到所述用户设 备所处的场景发生变化, 则重新选择 MCS索引。
在第六个方面的第六种可能的实现方式中, 所述处理器还用于从所述 MCS格式表中选择至少一项 MCS索引, 将选定的所述 MCS索引生成所述 MCS索引表;
所述发射器,还用于通过广播消息向各所述用户设备发送所述 MCS索引 表; 或者, 所述处理器,还用于从预存的各 MCS索引表中确定出所述 MCS索引表; 所述发射器, 还用于通过广播消息将所述 MCS索引表的 MCS索引表标 识发送给各所述用户设备, 以使各所述用户设备根据所述 MCS索引表标识, 从预存的各 MCS索引表中确定出所述 MCS索引表; 或者,
所述处理器, 还用于从所述 MCS格式表中选择至少一项 MCS索引, 将 选定的所述 MCS索引生成 MCS位表;
所述发射器,还用于通过广播消息将所述 MCS位表发送给各所述用户设 备, 以使各所述用户设备根据所述 MCS位表, 生成所述 MCS索引表。
本发明实施例提供一种调制与编码格式选择方法、 用户设备及基站, 用 户设备根据当前接收到的第一 MCS索引, 对生效的 MCS索引表、 MCS 格式表进行多级索引, 确定出调制阶数和传输块大小索引, 从而实现当 MCS 格式较多、 MCS索引的大小超过各物理层信令中允许的 MCS索引大小时, 无需改动物理层信令或消息等即可选择出满足需求的 MCS的目的。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对 实施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员 来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的 附图。
图 1为本发明实施例中用户设备不同运动状态下的 MCS概率密度函 数图;
图 2为本发明一实施例调制与编码格式选择方法的流程图;
图 3为本发明再一实施例调制与编码格式选择方法的流程图; 图 4为本发明又一实施例调制与编码格式选择方法的信令图;
图 5为本发明一实施例用户设备的结构示意图;
图 6为本发明再一实施例用户设备的结构示意图;
图 7为本发明一实施例基站的结构示意图;
图 8为本发明再一实施例基站的结构示意图;
图 9为本发明又一实施例用户设备的结构示意图; 图 10为本发明又一实施例用户设备的结构示意图;
图 11为本发明又一实施例基站的结构示意图;
图 12为本发明又一实施例基站的结构示意图。 具体实施方式 为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本 发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描 述, 显然,所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创造性劳动前提 下所获得的所有其他实施例, 都属于本发明保护的范围。
一般来说, MCS有 32种不同的类型, 表 0为现有技术中 MCS信息表。
表 0
调制与编
码格式索引 调制阶数 传输块大小索引 调制方式
0 2 0
1 2 1
2 2 2
3 2 3
4 2 4 4进制移相
5 2 5 键控 (QPSK)
6 2 6
7 2 7
8 2 8
9 2 9
10 4 10
11 4 11
12 4 12
8进制移相
13 4 13
键控 (8PSK)
14 4 14
15 4 15
16 4 16
17 6 17
64相正交振
18 6 18
幅调制 (64QAM)
19 6 19 20 6 20
21 6 21
22 6 22
23 6 23
24 6 24
25 6 25
26 6 26
27 6 27
28 6 28
Q4进制移相
29 2 键控 PSK
8P8进制移相 保留位
30 4 键控 SK
64相正交振
31 6 幅调制 如表 0所示, 第一列为 MCS 索引 (MCS Index) , 规定为 5比特, 第二 列为调制阶数 (Modulation Order) , 第三列为传输块大小 (Transport Block Size, TBS ) 索弓 I (TBS Index) , 第四列为调制方式 (Modulation Mode) 。 UE和 eNB预先保存这张表, 当 eNB通知 UE数据采用的 MCS时, 告知 UE 相应的 MCS索引, UE根据 MCS索引选择相应的调制阶数与传输块大小。 然而, 随着一些新技术以及应用场景的不断出现, 对于新的调制与编码格式 的需求也变得非常迫切, 如在 LTE-Hi 中增加了 256 相正交振幅调制 (256 Quadrature Amplitude Modulation , 256QAM) , 使得原有的 32种的 MCS无 法满足需求。 若直接将 MCS索引扩展为 6个比特, 从而能支持至多 64种不 同的 MCS格式。 然而, 由于 MCS索引一般被限定为 5比特, 若扩展使其大 于 5比特, 则 UE侧与 eNB侧涉及到 MCS索引的物理层的信令或消息等都 需要改进,例如各种 DCI: DCI Format 0、 DCI Format 1、 DCI 1A和 DCI Format IB等信令的格式都需要相应的改变。假设又有一些新的需求提出, 需要更多 的 MCS格式, 则又得继续。 本发明实施例通过在一个具体的场景下, 用户设备所能用到的 MCS 格式并不会在所有 MCS格式上均匀分布,而是明显会聚集在一个小范围。
图 1为本发明实施例中用户设备不同运动状态下的 MCS概率密度函 数图。 如图 1所示, 横坐标为 MCS索引, 纵坐标为概率密度, 当用户设 备高速运动时, 所用到的 MCS索引集中在 5~10的范围; 当用户设备中速 运动时, 所用到的 MCS索引集中在 15~20; 当用户设备低速运动时, 所 用到的 MCS索引集中在 25~30。 因此, 可以根据用户设备的某些特征, 如运动状态等划分不同的场景, 每个场景下从 MCS格式表中选择适合用 户设备的小范围的 MCS索引。
当 MCS格式表中 MCS索引多于 32项的情况下, DCI中传输的 MCS 索引仍然用 5比特, 从 MCS格式表中选择适合用户设备的小范围的 MCS 索引, 形成 MCS索引表, 通过高层信令或广播消息等将 MCS索引表发送 给用户设备, 用户设备和基站都配置并使该 MCS索引表生效。 当用户设 备接收到 MCS后, 例如, 接收到携带在 DCI中的 MCS后, 根据 MCS进 行多级索引, 即先查找 MCS索引表, 再查找 MCS格式表, 从而确定出调 制阶数与传输块大小索引, 根据确定出的调制阶数与传输块大小索引进行 通信。
另外, 需要说明的是, 从用户设备的角度来说, 每一个用户设备都可 以与基站进行高层信令交互, 可将该情形称之为特定场景; 处于同一基站 覆盖区域内的用户设备可以接收基站发送的广播消息, 可将该情形称之为 公共场景。 而本申请所述的根据用户设备的某些特征, 划分不同的场景, 具体是指对特定场景下的用户设备再次划分场景, 如特定场景下, 根据用 户设备的移动速度, 划分成中速、 低速或高速场景; 或者, 对公共场景下 的用户设备再次划分场景, 如公共场景下, 根据覆盖区域内整体的信号质 量的平均情况的好坏再次具体划分场景。 如无特别说明, 本申请下述的场 景, 则是对特定场景或公共场景再次划分场景后得到的子场景。
图 2为本发明一实施例调制与编码格式选择方法的流程图。本实施例 的执行主体为用户设备, 适用于当 MCS格式较多时, 需不改动物理层信令 或消息等选择出满足需求的 MCS的情况。 具体的, 本实施例包括如下步骤: 101、 接收基站发送的第一调制与编码格式 MCS索引。
用户设备接收基站发送的携带在调度信息中的第一 MCS索引,例如,接 收基站发送的携带第一 MCS索引的下行控制信息 DCI, 本实施例中, 以第一 MCS索引的大小为 5比特, 取值范围为 0~31为例进行说明。 102、在生效的 MCS索引表中查找与第一 MCS索引对应的第二 MCS索 引。
MCS索引表中保存了第一 MCS索引与第二 MCS索引的对应关系,其中, 各第二 MCS索引为用户设备所适用的小范围的 MCS索引, 各第一 MCS索 引为将第二 MCS索引映射 0~31后得到的。 举例来说, 若增加了 256相正 交振幅调制 (256 Quadrature Amplitude Modulation , 256QAM) , 需要 64种 MCS格式, 对应的, 第二 MCS索引的取值范围为 0~63。 假设某个具体的应 用场景中, 用户设备所适用的传输方式为 0~40中的奇数项 MCS索引, 即 1、 3、 5、 7…… 37、 39, 则将 1、 3、 5、 7…… 37、 39 依次映射 0~31, 即第二 MCS索引 1对应第一 MCS索引 0,第二 MCS索引 3对应第一 MCS索引 1,…… 得到各第一 MCS索引。具体的, 如表 1所示, 表 1为本发明实施例中保存第 一 MCS索引与第二 MCS索引对应关系的索引表。
表 1
Figure imgf000017_0001
本步骤中, 当用户设备接收到第一 MCS索引, 在生效的 MCS索引表中 查找与第一 MCS 索引对应的第二 MCS 索引。 例如, 当第一 MCS 索引为 10001, 即 17时, 通过查找 MCS索引表确定出第一 MCS索引对应的第二 MCS索引, 即 35。
103、根据第二 MCS索引在 MCS格式表中查找与第二 MCS索引对应的 调制阶数和传输块大小索引, 其中, MCS索引表中的第二 MCS索引为 MCS 格式表中索引的子集。
MCS格式表中保存了所有的或是预设的各 MCS索引及其调制阶数和传 输块大小索引, 用户设备和基站都事先存储了该 MCS 格式表。 以上述步骤 102中的增加了 256相正交振幅调制(256 Quadrature Amplitude Modulation , 256QAM) 的场景为例, 本发明实施例中的 MCS格式表如表 2所示。 表 2为 本发明实施例中的 MCS格式表。
表 2
Figure imgf000018_0001
用户设备根据第二 MCS索引 35在 MCS格式表中查找与 35对应的调制 阶数和传输块大小索引, 具体的, 调制阶数为 8阶, TBS Index为 32。
104、 采用第二 MCS索引对应的调制阶数和传输块大小索引与基站进 行通信。
用户设备采用查找出的第二 MCS 索引对应的调制阶数和传输块大小 索引与基站进行通信。
需要说明的是, 上述实施例是以场景中存在 64种 MCS格式、 用户设 备所适用的传输方式为 0~40中的奇数项 MCS索引为例详细阐述本发明, 然 而, 本发明并不以此为限制, 例如, 在其他可行的实施方式中, 存在的 MCS 格式可能有多种, 如 128、 256种等, 用户设备所适用的传输方式为 25~40、 50~55索引对应的调制阶数和传输块大小索引等。
本发明实施例提供的调制与编码格式选择方法, 用户设备根据当前接 收到的第一 MCS索引,对生效的 MCS索引表、 MCS格式表进行多级索引, 确定出调制阶数和传输块大小索引, 实现当 MCS格式较多、 MCS索引的大 小超过各物理层信令中允许的 MCS索引大小时,无需改动物理层信令或消息 等即可选择出满足需求的 MCS的目的。 例如, 当 MCS索引有 64项, 则可 选择当前场景下常用的 32项作为第二 MCS索引,依次映射 0~31从而得到第 一 MCS索引, 根据第一 MCS索引最终确定出第二 MCS索引。 另外, 本发 明实施例中, 用户设备和基站都事先保存了 MCS格式表, MCS格式表中可 保存所有的或是预设的各 MCS索引及其调制阶数和传输块大小索引,可灵活 的对该 MCS格式表进行扩充等, 不必限制 MCS索引必须是设定比特数所对 应的,例如不必限定为 0-31,无需删除一些原有的 MCS索引及其调制阶数和 传输块大小索引而直接添加新的 MCS索引及其调制阶数和传输块大小索引, 操作过程简单、 灵活。
上述实施例中, 在生效的 MCS索引表中查找与第一 MCS索引对应的第 二 MCS索引之前, 用户设备与基站之间进行高层信令交互, 如用户设备在 无线资源控制 (Radio resource control, 简称 RRC) 连接建立、 RRC连接 重建、 用户设备切换时, 需要在物理层配置该 MCS索引表, 并与基站启动 MCS索引表, 以使得该 MCS索引表生效, 特定场景的子场景下, 每一个用 户设备与基站进行高层信令交互,该基站为每个用户设备配置的 MCS索引表 一般不同。
具体的, 特定场景的子场景下, 用户设备可通过下述方式在物理层配置 该 MCS索引表。
方式一, 用户设备接收基站通过高层信令发送的 MCS索引表, 例如, 上 述表 1所示的 MCS索引表, 直接将该 MCS索引表配置在物理层。 具体的, 用户设备可以在每次与基站进行通信时, 都接收 MCS索引表; 或者,若用户设备的子场景未发生变化,某次通信和上次通信的 MCS索引表 相同, 则继续使用上次通信的 MCS索引表。
方式二,用户设备上事先存储了各个子场景下的 MCS索引表,每个 MCS 索引表都有唯一的可标识该表的 MCS索引表标识,基站只需告知用户设备指 定的 MCS索引表标识, 用户设备接收基站通过高层信令发送的 MCS索引表 标识, 例如, 上述表 1的标识, 根据 MCS索引表标识, 从预存的各 MCS索 引表中确定出 MCS索引表, 将确定出的 MCS索引表配置在物理层。
方式三, 接收基站通过高层信令发送的 MCS位表, MCS位表指示基站 选定的 MCS ,根据 MCS位表,生成 MCS索引表。其中, MCS位表是指 MCS 格式表中选中的、 可作为第二 MCS索引和未选中的、 不可作为第二 MCS索 引的表。 以上述实施例中的表 1、 表 2为例, 用户设备所适用的传输方式为 0-40中的奇数项 MCS索弓 I, 则基站可将 MCS格式表 2中 0~40中的奇数项 MCS索引标识为 1, 将其他的 MCS索引标识为 0, 得到表 3, 表 3为本发明 实施例中的对选中的 MCS索引进行标识的表。 将表 3中第一列中的标识 0、 1按照预设的规则进行排列,例如,按照字节排列成一个 8 X 8 的二进制表(未 示出) , 该二进制表即为本实施例的 MCS位表。
表 3
Figure imgf000020_0001
0 28
1 29
0 30
1 31
0 32
1 33
0 34
1 35
0 62
1 Reserved
用户设备在接收到该 MCS位表后,将标识为 1的 MCS索引挑选出来, 依次映射 0~31, 得到上述表 1, 然后将得到的 MCS索引表配置在物理层。
需要说明的是, 上述依次映射过程中, 也可以是从其他数据开始映射, 如进行某种算法将各第一 MCS索引映射到 0~31, 或者不以 0开始, 而是以 0~31中的任一数字, 例如 5开始, 得到表 4, 表 4为本发明实施例中的又一 MCS索引表。
表 4
Figure imgf000021_0001
进一步的, 上述用户设备根据接收到的基站发送的高层信令在物理层配 置 MCS索引表的过程中,还可以接收高层信令中携带的生效时间,根据生效 时间与基站同时启动 MCS索引表, 以使得 MCS索引表生效。
具体的, 生效时间用于指示 MCS索引表的启动时间, 高层信令中可包括 帧的序号(The frame serial number, SFN)等指示生效时间的信息, 用户设备 和基站根据生效时间, 同时启动 MCS索引表。 进一步的, 也可以不通过在高层信令中携带生效时间使得用户设备与基 站在 MCS索引表生效的时间上达成一致, 从而同步启动 MCS索引表, 而是 通过用户设备的反馈达到此目的。 具体的, 用户设备在接收到高层信令后, 若在物理层成功配置 MCS索引, 则向基站发送配置成功响应消息, 即向基站 反馈正确应答 (acknowledgement character, ACK) , 其中, 配置成功响应消 息用于指示基站在收到该配置成功响应消息后启动所述 MCS索引表。 当基站 收到该 ACK后, 认为配置成功, 用户设备与基站启动 MCS索引表, 以使得 MCS 索引表生效, 后续通信过程中, 用户设备与基站通过本发明实施例中的 多次查表方式选择调制阶数与传输块大小索引进行通信; 否则, 若在物理层 配置 MCS索引表失败, 则向基站发送配置失败响应消息, 即向基站反馈否定 应答 (Negative Acknowledgement, NACK ) 。 用户设备可选择几种固定的 MCS格式专门用来传输 ACK/NACK,每个 MCS索引表中都包含这几个固定 的 MCS索引, 使得无论采用哪个 MCS索引表, 基站都可以成功的解析出用 户设备发送的 ACK/NACK。
需要说明的是, 上述两种使用户设备的 MCS索引表与基站的 MCS索引 表同步启动的方式中, 同步未必是相同时刻, 只要是不影响执行功能的先后 启动, 都可算同步。
上述实施例中, 在生效的 MCS索引表中查找与第一 MCS索引对应的第 二 MCS索引之前, 用户设备接收基站发送的广播消息。 公共场景下, 基站 覆盖的区域内的空闲态的用户设备接收基站发送的广播消息, 携带在广播消 息中的 MCS索引表或 MCS索引表的相关信息是相同的, 也就是说, 各个用 户设备的 MCS索引表相同, 多个用户设备公用同一个 MCS索引表。
具体的, 公共场景下, 各用户设备可通过下述方式在物理层配置该 MCS 索引表。
方式四、 接收基站通过广播消息发送的 MCS 索引表, 直接将接收到的
MCS索引表配置在物理层。
方式五、 接收基站通过广播消息发送的 MCS索引表标识, 根据 MCS索 引表标识, 从预存的各 MCS索引表中确定出 MCS索引表, 根据 MCS索引 表标识, 从预存的各 MCS索引表中确定出 MCS索引表, 将确定出的 MCS 索引表配置在物理层。 方式六、 接收基站通过广播消息发送的 MCS位表, MCS位表指示基站选 定的 MCS , 根据 MCS位表, 生成 MCS索引表。
上述三种配置方式, 可参见用户设备与基站之间进行高层信令交互进行 MCS索引表的三种配置过程, 此处不再赘述。
上述实施例中, 用户设备为具备在物理层配置 MCS索引表能力的用户设 备, 当用户设备不使用在物理层配置 MCS索引表的功能时, 其和传统的用户 设备一样, 使用默认配置的 MCS索引, 则根据调度信息, 例如 DCI中的 MCS 索引直接查找 MCS格式表, 无需多次查表; 否则, 若该用户设备开启了在物 理层配置 MCS索引表的功能时, 若用户设备处于空闲态, 则接收基站发送的 携带 MCS索引表相关信息的广播消息; 否则, 若处于连接态, 则通过 RRC高 层信令告知基站其为具备 MCS索引表配置功能的用户设备, 并接收基站发送 的携带 MCS索引表相关信息的 RRC高层信令。
图 3为本发明再一实施例调制与编码格式选择方法的流程图。本实施 例的执行主体为基站, 适用于当 MCS格式较多时, 需不改动物理层信令或 消息等选择出满足需求的 MCS的情况。 具体的, 本实施例包括如下步骤:
201、 在本地存储的生效的调制与编码格式 MCS索引表中选择对应于 第二 MCS索引的第一 MCS索引。
具体的, 基站在生效的 MCS索引表中选择对应于第二 MCS索引的第 一 MCS索引。 以上述图 2所述实施例中的表 1为例, 某场景下, 若基站 确定出该场景下用户设备所适用的传输方式为 0~40中的奇数项 MCS索引, 即 1、 3、 5、 7…… 37、 39时, 即各第二 MCS索引 S为 1、 3、 5、 7…… 37、 39时, 从生效的 MCS索引表中选择具体的第二 MCS索引, 然后根据选定的 第二 MCS索引在生效的 MCS索引表中选择对应于第二 MCS索引的第一 MCS索引。
202、 向用户设备发送第一 MCS索引, 以使得用户设备在生效的 MCS 索引表中查找与第一 MCS索引对应的第二 MCS索引, 并根据第二 MCS索 引在 MCS 格式表中查找与第二 MCS 索引对应的调制阶数和传输块大小索 弓 I, 其中, MCS索引表中的第二 MCS索引为 MCS格式表中索引的子集。
本实施例中, 以第一 MCS索引的大小为 5比特, 取值范围为 0~31为例 进行说明。基站向用户设备发送携带第一 MCS索引的调度信息,如下行控制 信息 DCI,使得用户设备在生效的 MCS索引表中查找与第一 MCS索引对应 的第二 MCS索引, 并根据第二 MCS索引在 MCS格式表中查找与第二 MCS 索引对应的调制阶数和传输块大小索引, 其中, MCS格式表至少包括索引表 中的各第二 MCS索引对应的调制阶数和传输块大小索引, 且 MCS格式表中 至少一项 MCS索引大于 31。
本实施例中关于第一 MCS索引、 第二 MCS索引、 MCS索引表及 MCS 格式表的描述可参见图 2所示实施例, 在此不再赘述。
203、采用第二 MCS索引对应的调制阶数和传输块大小索引与用户设备进 行通信。
基于与用户设备采用第二 MCS索引对应的调制阶数和传输块大小索引与 基站进行通信。
本发明实施例提供的调制与编码格式选择方法, 基站向用户设备发送第 一 MCS索引, 使得用户设备根据第一 MCS索引, 对生效的 MCS索引表、 MCS 格式表进行多级索引, 确定出调制阶数和传输块大小索引, 实现当 MCS格式 较多、 MCS索引的大小超过各物理层信令中允许的 MCS索引大小时, 无需改 动物理层信令或消息等即可选择出满足需求的 MCS的目的。 另外, 本发明实 施例中, 用户设备和基站都事先保存了 MCS格式表, MCS格式表中可保存所 有的或是预设的各 MCS索引及其调制阶数和传输块大小索引, 可灵活的对该 MCS格式表进行扩充等, 不必限制 MCS索引必须是 0~31, 无需删除一些原有 的 MCS索引及其调制阶数和传输块大小索引而直接添加新的 MCS索引及其调 制阶数和传输块大小索引, 操作过程简单、 灵活。
上述实施例中, 在生效的 MCS索引表中选择对应第二 MCS索引的第 一 MCS索引之前, 基站与用户设备之间进行高层信令交互, 如在用户设备 建立 RRC连接建立、 重建 RRC连接、 RRC重配、 切换时, 需要在物理层 配置 MCS索引表, 并与用户设备启动所述 MCS索引表, 以使得 MCS索引表生 效, 特定场景的各子场景下, 基站与每一个用户设备进行高层信令交互, 基 站为每个用户设备配置的 MCS索引表。
具体的,特定场景的子场景下,基站可通过下述方式在物理层配置该 MCS 索引表。
方式一, 用户设备在与基站之间建立连接, 基站能感知到用户设备, 可 以根据用户设备的上行信号质量等来判断所处的场景。 与用户设备进行通信 时, 根据用户设备所处的场景, 基站从预先配置的 MCS格式表中为用户设备 选择适合该用户设备所处场景的至少一项 MCS索引, 将选定的 MCS索引映射 0-31 , 生成 MCS索引表, 将生成的 MCS索引表配置在物理层, 并通过高层信 令向用户设备发送 MCS索引表。例如,基站可以在每次与用户设备进行通信 时, 都发送 MCS索引表; 或者, 若用户设备的子场景未发生变化, 某次通信 和上次通信的 MCS索引表相同, 则继续使用上次通信的 MCS索引表。
具体的,每个用户设备的 MCS索引表可能不同, 即每个用户设备在该子 场景下的各第二 MCS 索引可能不同, 基站可根据用户设备的某一项特征信 息, 如移动速度, 从 MCS格式表中选择每一用户设备所适用的 MCS索引的 取值范围, 如高速、 中速、 低速等。 例如, 对于高速移动的用户设备 A和用 户设备 B , 用户设备 A所适用的 MCS索引的取值范围例如可以是 25~38, 而 用户设备 B所适用的 MCS索引的取值范围例如可以是 23~35,基站在物理层 为用户设备 A、 用户设备 B分别生成 MCS索引表。
可以理解的是, 基站也可以结合用户设备所处的场景、 用户设备的特征 信息、地理位置信息等为用户设备选择适用的 MCS索引并生成 MCS索引表。
方式二,基站根据用户设备所处的场景, 从预存的各 MCS索引表中确定 出适合该场景的 MCS索引表,将确定出的 MCS索引表配置在物理层,通过高 层信令将确定出的 MCS索引表的 MCS索引表标识发送给用户设备, 以使用 户设备根据 MCS索引表标识, 从预存的各 MCS索引表中确定出 MCS索引 表。
基站用户设备事先都可产生场景下所适用的 MCS索引表,与用户设备通 信时, 只要指定适用的 MCS 索引表并配置在物理层上, 通过高层信令将该 MCS索引表的标识发送给用户设备; 也可以一次性的将所有的 MCS索引表 都发送给用户设备, 后续只需要告知用户设备所适用的 MCS索引的 MCS索 引表标识即可。其中, 为用户设备生成每一场景下所适用的 MCS索引表的实 现过程, 可见上述方式一, 此处不再赘述。
方式三,基站根据用户设备所处的场景, 从 MCS格式表中为用户设备选 择至少一项 MCS索引, 将选定的 MCS索引生成 MCS位表, 通过高层信令 将 MCS位表发送给用户设备, 以使得用户设备根据 MCS位表, 生成 MCS 索引表。
具体的, 可见上述实施例所示方式三, 此处不再赘述。
进一步的,上述基站在物理层配置 MCS索引表的过程中,还可确定 MCS 索引表的生效时间, 生效时间用于指示 MCS索引表的启动时间, 基站将生 效时间携带在高层信令中发送给用户设备, 根据生效时间与用户设备同时启 动 MCS索引表, 以使得 MCS索引表生效。
进一步的, 基站也可以不通过在高层信令中携带生效时间使得与用户 设备在 MCS索引表生效的时间上达成一致, 从而同步启动 MCS索引表, 而是通过接收用户设备发送的配置成功响应消息, 接收到用户设备发送的配 置成功响应消息后,与用户设备启动 MCS索引表, 以使得 MCS索引表生效。 其中, 配置成功响应消息用于指示基站在收到该配置成功响应消息后启动所 述 MCS索引表。
具体的,根据生效时间或通过用户设备反馈使得与用户设备在 MCS索引 表生效的时间上达成一致的过程, 可参见上述实施例, 此处不再赘述。
需要说明的是, 上述两种使用户设备的 MCS索引表与基站的 MCS索引 表同步启动的方式中, 同步未必是相同时刻, 只要是不影响执行功能的先后 启动, 都可算同步。
上述实施例中,基站向用户设备发送第一 MCS索引, 以使得用户设备在 生效的 MCS索引表中查找与第一 MCS索引对应的第二 MCS索引, 并根据 第二 MCS索引在 MCS格式表中查找与第二 MCS索引对应的调制阶数和传 输块大小索引之前, 基站向其覆盖区域发送广播消息, 具体的, 根据地理位 置将基站所覆盖的区域划分为若干个地理区域, 基站向每个地理区域发送携 带 MCS索引表或 MCS索引表的相关信息的广播消息, 使得每个地理区域, 或若干个地理区域中的各个用户设备的 MCS索引表相同,多个用户设备公用 同一个 MCS索引表。
具体的, 公共场景下, 基站可通过下述方式进行 MCS选择:
方式四、 从 MCS格式表中选择至少一项 MCS索引, 将选定的 MCS索 引生成 MCS索引表, 通过广播消息向各用户设备发送 MCS索引表。
公共场景下, 各个用户设备的 MCS索引表相同, 即每个用户设备在该场 景下的各第二 MCS索引相同,多个用户设备公用同一个 MCS索引表。例如, 根据地理位置将基站所覆盖的区域划分为若干个地理区域, 每一个地理区域 或者若干地理区域中的用户设备所适用的 MCS索引的取值范围是相同的,基 站可以根据地理位置等为用户设备选择适用的 MCS 索引并生成 MCS 索引 表。
方式五、 从预存的各 MCS索引表中确定出 MCS索引表, 通过广播消息 将 MCS索引表的 MCS索引表标识发送给各用户设备, 以使各用户设备根据 MCS索引表标识, 从预存的各 MCS索引表中确定出 MCS索引表; 或者, 方式六、 从 MCS格式表中选择至少一项 MCS索引, 将选定的 MCS索 引生成 MCS位表, 通过广播消息将 MCS位表发送给各用户设备, 以使各用 户设备根据 MCS位表, 生成 MCS索引表。
进一步的, 公共场景下, 基站也可以改变广播消息中对于公共场景的配 置, 例如, 基站可根据覆盖区域内的大量连接态用户的信号质量对自己覆盖 范围内的整体情况做一估计, 若发生变化, 则改变广播消息中对于公共场景 的 MCS索引表的配置。
LTE系统中, 无线接口的协议栈分为用户面协议栈和控制面协议栈, 控制面协议栈上建立信令无线承载 (Signaling Radio Bearer, SRB ) , 主要 用来传输控制信令, 用户面协议栈上建立数据无线承载 (Data Radio Bearer, DRB ) , 主要用来传输业务数据。 用户设备的控制面协议栈包括: 非接入 (Non- Access Stratum, NAS ) 层、 无线资源控制 (Radio Resource Control, RRC)层、分组数据汇聚协议 (Packet Data Convergence Protocol, PDCP)层、 无线链路控制 (Radio Link Control, RLC ) 层、 媒质接入控制 (Radio Link Control, MAC) 层、 物理 (Physical , PHY) 层; 基站上主要包括 RRC层、 PDCP层、 RLC层、 MAC层、 PHY层。 图 4为本发明又一实施例调制与编 码格式选择方法的信令图。 本实施例中, 具体以基站与用户设备之间进行 高层信令交互, 且高层信令中携带生效时间、 用户设备中和基站中仅示出 了 RRC层和 PHY层为例对本发明进行详细阐述。 具体的, 本实施例包括 如下步骤:
301、基站从 MCS格式表中选择 MCS索引, 选定的 MCS索引为 MCS格式表 中 MCS索引的子集。
具体的, 基站在 RRC层为用户设备选择适合该用户设备所处的场景下的 MCS索引, 选定的各 MCS索引为 MCS格式表中 MCS索引的子集。
302、 基站与用户设备进行高层信令的交互。
具体的, 基站可将 MCS索引表的相关信息发送给用户设备。 例如, 通过 上述方式一, 直接生成 MCS索引表并发送给用户设备; 或者, 通过上述方式 二, 给用户设备发送 MCS索引表标识; 或者, 通过上述方式三, 发送 MCS索 引位表等, 高层信令中可携带生效时间。
303、 基站和用户设备各自在物理层配置 MCS索引表。
具体的, 本步骤包括如下子步骤:
3031、 用户设备在物理层配置 MCS索引表;
3032、 基站在物理层配置 MCS索引表。
304、 基站和用户设备根据生效时间, 令 MCS索引表生效。
具体的, 本步骤包括如下子步骤:
3041、 用户设备根据生效时间, 令 MCS索引表生效;
3042、 基站根据生效时间, 令 MCS索引表生效。
305、基站和用户设备采用本发明实施例的多次查表方式传递信令、数据。
306、若基站检测到用户设备所处的场景发生变化, 则重新为用户设备选 择适合该用户设备的 MCS索引信息, 然后, 返回步骤 302。
图 5为本发明一实施例用户设备的结构示意图。 本实施例提供的用户设 备是与本发明图 2实施例对应的装置实施例, 具体实现过程在此不再赘述。 具体的, 本实施例提供的用户设备 100具体包括:
接收模块 11, 用于接收基站发送的第一调制与编码格式 MCS索引; 第一查找模块 12, 用于在生效的 MCS索引表中查找接收模块 11接收的 与第一 MCS索引对应的第二 MCS索引;
第二查找模块 13, 用于根据第一查找模块 12查找的第二 MCS索引在 MCS格式表中查找与第二 MCS索引对应的调制阶数和传输块大小索引, 其 中, MCS索引表中的第二 MCS索引为 MCS格式表中索引的子集;
通信模块 14, 用于采用第二查找模块 13查找的第二 MCS索引对应的 调制阶数和传输块大小索引与基站进行通信。
本发明实施例提供的用户设备, 根据当前接收到的第一 MCS索引, 对生效的 MCS索引表、 MCS格式表进行多级索引, 确定出调制阶数和传输 块大小索引, 实现当 MCS格式较多、 MCS索引的大小超过各物理层信令中 允许的 MCS索引大小时,无需改动物理层信令或消息等即可选择出满足需求 的 MCS的目的。 例如, 当 MCS索引有 64项, 则可选择当前场景下常用的 32项作为第二 MCS索引, 依次映射 0~31从而得到第一 MCS索引, 根据第 一 MCS索引最终确定出第二 MCS索引。 另外, 本发明实施例中, 用户设备 和基站都事先保存了 MCS格式表, MCS格式表中可保存所有的或是预设的 各 MCS索引及其调制阶数和传输块大小索引, 可灵活的对该 MCS格式表进 行扩充等, 不必限制 MCS索引必须是设定比特数所对应的,例如不必限定为 0-31,无需删除一些原有的 MCS索引及其调制阶数和传输块大小索引而直接 添加新的 MCS索引及其调制阶数和传输块大小索引, 操作过程简单、 灵活。
图 6为本发明再一实施例用户设备的结构示意图。 如图 6所示, 本实施 例的用户设备 200在图 5的基础上, 进一步的, 还包括:
配置模块 15, 用于在物理层配置 MCS索引表;
启动模块 16, 用于与基站同步启动配置模块配置 15的 MCS索引表, 以 使得 MCS索引表生效。
进一步的, 接收模块 11, 用于接收基站通过高层信令发送的 MCS索引 表; 或者,
接收模块 11还用于接收基站通过高层信令发送的 MCS索引表标识; 用户设备 200还包括:处理模块 17,用于根据接收模块 11接收到的 MCS 索引表标识, 从预存的各 MCS索引表中确定出 MCS索引表; 或者,
接收模块 11还用于接收基站通过高层信令发送的 MCS位表; 处理模块 17用于根据接收模块 11接收到的 MCS位表指示基站选定的 MCS, 根据 MCS位表, 生成 MCS索引表。
进一步的, 接收模块 11 接收的高层信息还携带生效时间, 用于指示 MCS索引表的启动时间;
启动模块 16, 用于根据接收模块 11接收的生效时间, 与基站同时启动 MCS索引表, 以使得 MCS索引表生效。
再请参照图 7, 进一步的, 用户设备 200还包括:
发送模块 18,用于向基站发送配置成功响应消息,配置成功响应消息用 于指示基站在收到配置成功响应消息后启动 MCS索引表; 启动模块 16具体用于在发送模块 18向基站发送配置成功响应消息后, 与基站同步启动 MCS索引表, 以使得 MCS索引表生效。
进一步的, 接收模块 11还用于: 接收基站通过广播消息发送的 MCS索 引表; 或者,
接收模块 11还用于接收基站通过广播消息发送的 MCS索引表标识; 处理模块 17根据接收模块 11接收到的 MCS索引表标识, 从预存的各 MCS索引表中确定出 MCS索引表; 或者,
接收模块 11还用于接收基站通过广播消息发送的 MCS位表, MCS位 表指示基站选定的 MCS;
处理模块 17用于根据接收模块 11接收到的 MCS位表, 生成 MCS索引 表。
图 7为本发明一实施例基站的结构示意图。 本实施例提供的基站可设置 在用户设备上, 也可以是用户设备本身, 是与本发明图 3实施例对应的装置 实施例, 具体实现过程在此不再赘述。 具体的, 本实施例提供的基站 300具 体包括:
存储模块 20, 用于存储生效的调制与编码格式 MCS索引表
选择模块 21, 用于在存储模块 20存储的生效的 MCS索引表中选择对 应于第二 MCS索引的第一 MCS索引;
发送模块 22,用于向用户设备发送选择模块 21选择的第一 MCS索引, 以使得用户设备在生效的 MCS索引表中查找与第一 MCS索引对应的第二 MCS索引, 并根据第二 MCS索引在 MCS格式表中查找与第二 MCS索引对 应的调制阶数和传输块大小索引, 其中, MCS索引表中的第二 MCS索引为 MCS格式表中索引的子集;
通信模块 23, 用于采用第二 MCS索引对应的调制阶数和传输块大小索 引与用户设备进行通信。
本发明实施例提供的基站, 基站向用户设备发送第一 MCS索引, 使 得用户设备根据第一 MCS索引, 对生效的 MCS索引表、 MCS格式表进 行多级索引, 确定出调制阶数和传输块大小索引, 实现当 MCS格式较多、 MCS索引的大小超过各物理层信令中允许的 MCS索引大小时, 无需改动 物理层信令或消息等即可选择出满足需求的 MCS 的目的。 另外, 本发明 实施例中, 用户设备和基站都事先保存了 MCS格式表, MCS格式表中可 保存所有的或是预设的各 MCS索引及其调制阶数和传输块大小索引, 可 灵活的对该 MCS格式表进行扩充等, 不必限制 MCS索引必须是 0~31, 无需删除一些原有的 MCS索引及其调制阶数和传输块大小索引而直接添 加新的 MCS索引及其调制阶数和传输块大小索引, 操作过程简单、 灵活。
图 8为本发明再一实施例基站的结构示意图。 如图 8所示, 本实施例的 基站 400在图 7的基础上, 进一步的, 基站 400还包括:
配置模块 24, 用于在物理层配置 MCS索引表;
启动模块 25, 用于与用户设备同步启动 MCS索引表, 以使得 MCS索引 表生效。
再请参照图 8, 进一步的, 基站 400还包括:
选择模块 21, 用于根据用户设备所处的场景, 从 MCS格式表中为用户 设备选择至少一项 MCS索引;
基站 400还包括生成模块 26, 用于将选择模块 21选定的 MCS索引生成 MCS索引表;
发送模块 22通过高层信令向用户设备发送 MCS索引表。
再请参照图 8,进一步的, 选择模块 21,用于根据用户设备所处的场景, 从预存的各 MCS索引表中确定出 MCS索引表;
发送模块 22用于通过高层信令将 MCS索引表的 MCS索引表标识发送 给用户设备, 以使用户设备根据 MCS索引表标识, 从预存的各 MCS索引表 中确定出 MCS索引表。
再请参照图 8,进一步的, 选择模块 21,用于根据用户设备所处的场景, 从 MCS格式表中为用户设备选择至少一项 MCS索引;
生成模块 26, 用于将选择模块 21选定的 MCS索引生成 MCS位表; 发送模块 22, 通过高层信令将 MCS位表发送给用户设备, 以使得用户 设备根据 MCS位表, 生成 MCS索引表。
进一步的,发送模块 22发送的第一信息还携带生效时间,用于指示 MCS 索引表的启动时间;
启动模块 25, 用于根据生效时间, 与用户设备同时启动 MCS索引表, 以使得 MCS索引表生效。 再请参照图 8, 进一步的, 基站 400还包括:
接收模块 27, 用于接收用户设备发送的配置成功响应消息, 配置成功响 应消息用于指示用户设备的 MCS 索引表配置成功并在发送配置成功响应消 息后启动;
启动模块 25, 用于当接收模块 27接收到配置成功响应消息后, 与用户 设备同步启动 MCS索引表, 以使得 MCS索引表生效。
再请参照图 8, 进一步的, 基站 400还包括:
检测模块 28, 用于若检测到用户设备所处的场景发生变化, 则重新选择 MCS索弓 I。
再请参照图 8, 进一步的, 基站 400还包括:
处理模块 29, 用于从 MCS格式表中选择至少一项 MCS索引, 将选定的 MCS索引生成 MCS索引表;
发送模块 22用于通过广播消息向各用户设备发送 MCS索引表; 或者, 处理模块 29, 用于从预存的各 MCS索引表中确定出 MCS索引表; 发送模块 22用于通过广播消息将 MCS索引表的 MCS索引表标识发送 给各用户设备, 以使各用户设备根据 MCS索引表标识, 从预存的各 MCS索 引表中确定出 MCS索引表; 或者,
处理模块 29, 用于从 MCS格式表中选择至少一项 MCS索引, 将选定的 MCS索引生成 MCS位表;
发送模块 22用于通过广播消息将 MCS位表发送给各用户设备, 以使各 用户设备根据 MCS位表, 生成 MCS索引表。
图 9为本发明又一实施例用户设备的结构示意图。 如图 9所示, 本实施 例提供的用户设备 500包括:
接收器 31, 用于接收基站发送的第一 MCS索引;
处理器 32, 用于在生效的 MCS索引表中查找与接收器接收的第一 MCS 索引对应的第二 MCS索引, 根据第二 MCS索引在 MCS格式表中查找与第 二 MCS索引对应的调制阶数和传输块大小索引, 其中, MCS索引表中的第 二 MCS索引为 MCS格式表中索引的子集, 采用第二 MCS索引对应的调制 阶数和传输块大小索引与基站进行通信。
具体的,实现过程和实现原理请参照上述方法实施例,此处不再赘述。 进一步的, 处理器 32还用于: 在物理层配置 MCS索引表, 与基站同 步启动配置模块配置的 MCS索引表, 以使得 MCS索引表生效。
进一步的, 接收器 31还用于: 接收基站通过高层信令发送的 MCS索引 表; 或者,
接收器 31还用于接收基站通过高层信令发送的 MCS索引表标识,处理 器 32根据接收器 31接收到的 MCS索引表标识,从预存的各 MCS索引表中 确定出 MCS索引表, MCS位表指示基站选定的 MCS; 或者,
接收器 31还用于接收基站通过高层信令发送的 MCS位表, 处理器 32 根据接收器 31接收到的 MCS位表, 生成 MCS索引表。
进一步的,接收器 31接收的高层信息还携带生效时间,用于指示 MCS 索引表的启动时间;
处理器 32, 用于根据接收器接收的生效时间, 与基站同时启动 MCS索 弓 I表, 以使得 MCS索引表生效。
图 10为本发明又一实施例用户设备的结构示意图。 如图 10所示, 本实 施例的用户设备 600在图 9的基础上, 进一步的, 用户设备 600还包括: 发射器 33, 用于向基站发送配置成功响应消息,配置成功响应消息用于 指示基站在收到配置成功响应消息后启动 MCS索引表;
处理器 32具体用于在发射器 33向基站发送配置成功响应消息后, 与基 站同步启动 MCS索引表, 以使得 MCS索引表生效。
进一步的, 接收器 31还用于: 接收基站通过广播消息发送的 MCS索引 表; 或者,
接收器 31还用于接收基站通过广播消息发送的 MCS索引表标识 处理器 32用于根据 MCS索引表标识, 从预存的各 MCS索引表中确定 出 MCS索引表; 或者,
接收器 31用于接收基站通过广播消息发送的 MCS位表, MCS位表指示 基站选定的 MCS;
处理器 32用于根据 MCS位表, 生成 MCS索引表。
图 11为本发明又一实施例基站的结构示意图。 如图 11所示, 本实施例 提供的基站 700包括:
存储器 40, 用于存储生效的 MCS索引表; 处理器 41, 用于在存储器 40存储的生效的调制与编码格式 MCS索引 表中选择对应于第二 MCS索引的第一 MCS索引;
发射器 42,用于向用户设备发送处理器 41选择的第一 MCS索引, 以 使得用户设备在生效的 MCS 索引表中查找与第一 MCS 索引对应的第二 MCS索引, 并根据第二 MCS索引在 MCS格式表中查找与第二 MCS索引对 应的调制阶数和传输块大小索引, 其中, MCS索引表中的第二 MCS索引为 MCS格式表中索引的子集;
处理器 41还用于采用第二 MCS索引对应的调制阶数和传输块大小索引 与用户设备进行通信。
具体的,实现过程和实现原理请参照上述方法实施例,此处不再赘述。 进一步的, 处理器 41还用于在物理层配置 MCS索引表, 与用户设备同 步启动 MCS索引表, 以使得 MCS索引表生效。
进一步的, 处理器 41还用于根据用户设备所处的场景, 从 MCS格式表 中为用户设备选择至少一项 MCS索引, 将选定的 MCS索引生成 MCS索引 表;
发射器 42还用于通过高层信令向用户设备发送 MCS索引表; 或者, 处理器 41还用于根据用户设备所处的场景,从预存的各 MCS索引表中 确定出 MCS索引表;
发射器 42还用于通过高层信令将 MCS索引表的 MCS索引表标识发送 给用户设备, 以使用户设备根据 MCS索引表标识, 从预存的各 MCS索引表 中确定出 MCS索引表; 或者,
处理器 41还用于根据用户设备所处的场景,从 MCS格式表中为用户设 备选择至少一项 MCS索引, 将选定的 MCS索引生成 MCS位表;
发射器 42还用于通过高层信令将 MCS位表发送给用户设备, 以使得用 户设备根据 MCS位表, 生成 MCS索引表
进一步的,发射器 42发送的高层信令中还携带生效时间,用于指示 MCS 索引表的启动时间, 处理器 41 还用于根据生效时间, 与用户设备同时启动 MCS索引表, 以使得 MCS索引表生效。
图 12为本发明又一实施例基站的结构示意图。 如图 12所示, 本实施例 的基站 800在图 11的基础上, 进一步的, 基站 800还包括: 接收器 43, 用于接收用户设备发送的配置成功响应消息, 配置成功响应 消息用于指示用户设备的 MCS 索引表配置成功并在发送配置成功响应消息 后启动;
处理器 41用于在接收器接收到用户设备发送的配置成功响应消息后, 启动 MCS索引表, 以使得 MCS索引表生效。
进一步的, 处理器 41还用于若检测到用户设备所处的场景发生变化, 则 重新选择 MCS索引。
进一步的, 用户设备至少为一个, 处理器 41还用于从 MCS格式表中选 择至少一项 MCS索引, 将选定的 MCS索引生成 MCS索引表;
发射器 42还用于通过广播消息向各用户设备发送 MCS索引表; 或者, 处理器 41还用于从预存的各 MCS索引表中确定出 MCS索引表; 发射器 42还用于通过广播消息将 MCS索引表的 MCS索引表标识发送 给各用户设备, 以使各用户设备根据 MCS索引表标识, 从预存的各 MCS索 引表中确定出 MCS索引表; 或者,
处理器 41还用于从 MCS格式表中选择至少一项 MCS索引, 将选定的
MCS索引生成 MCS位表;
发射器 42还用于通过广播消息将 MCS位表发送给各用户设备, 以使各 用户设备根据 MCS位表, 生成 MCS索引表。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤 可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述 的存储介质包括: ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介 质。
最后应说明的是: 以上各实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述各实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分或者全部技术特征进行等同替换; 而这些修改或者替换, 并 不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims

权 利 要 求 书
1、 一种调制与编码格式 MCS选择方法, 其特征在于, 包括:
接收基站发送的第一调制与编码格式 MCS索引;
在生效的 MCS索引表中查找与所述第一 MCS索引对应的第二 MCS索 引;
根据所述第二 MCS索引在 MCS格式表中查找与所述第二 MCS索引对 应的调制阶数和传输块大小索引, 其中, 所述 MCS索引表中的第二 MCS索 引为所述 MCS格式表中索引的子集;
采用所述第二 MCS索引对应的调制阶数和传输块大小索引与所述基站 进行通信。
2、 根据权利要求 1所述的方法, 其特征在于, 所述在生效的 MCS索引 表中查找与所述第一 MCS索引对应的第二 MCS索引之前, 还包括:
在物理层配置所述 MCS索引表;
与所述基站同步启动所述 MCS索引表, 以使得所述 MCS索引表生效。
3、 根据权利要求 2 所述的方法, 其特征在于, 所述在物理层配置所述
MCS索引表之前, 还包括:
接收所述基站通过高层信令发送的所述 MCS索引表; 或者,
接收所述基站通过高层信令发送的 MCS索引表标识, 根据所述 MCS索 引表标识, 从预存的各 MCS索引表中确定出所述 MCS索引表; 或者, 接收所述基站通过高层信令发送的 MCS位表, 所述 MCS位表指示所述 基站选定的 MCS, 根据所述 MCS位表, 生成所述 MCS索引表。
4、 根据权利要求 3所述的方法, 其特征在于, 所述高层信令中还携带生 效时间, 用于指示所述 MCS索引表的启动时间;
与所述基站同步启动所述 MCS索引表, 包括:
所述用户设备根据所述生效时间, 与所述基站同时启动所述 MCS 索引 表, 以使得所述 MCS索引表生效。
5、 根据权利要求 3 所述的方法, 其特征在于, 所述在物理层配置所述 MCS索引表之后, 还包括:
向所述基站发送配置成功响应消息, 所述配置成功响应消息用于指示所 述基站在收到所述配置成功响应消息后启动所述 MCS索引表; 所述与所述基站同步启动所述 MCS索引表, 包括:
向所述基站发送配置成功响应消息后,启动所述 MCS索引表, 以使得所 述 MCS索引表生效。
6、 根据权利要求 1所述的方法, 其特征在于, 所述在生效的 MCS索引 表中查找与所述第一 MCS索引对应的第二 MCS索引之前, 还包括:
接收所述基站通过广播消息发送的所述 MCS索引表; 或者,
接收所述基站通过广播消息发送的 MCS索引表标识, 根据所述 MCS索 引表标识, 从预存的各 MCS索引表中确定出所述 MCS索引表; 或者,
接收所述基站通过广播消息发送的 MCS位表, 所述 MCS位表指示所述 基站选定的 MCS, 根据所述 MCS位表, 生成所述 MCS索引表。
7、 一种调制与编码格式 MCS选择方法, 其特征在于, 包括: 在本地存储、且生效的调制与编码格式 MCS索引表中选择对应于第二
MCS索引的第一 MCS索引;
向用户设备发送所述第一 MCS 索引, 以使得所述用户设备在生效的 MCS索引表中查找与所述第一 MCS索引对应的第二 MCS索引,并根据所述 第二 MCS索引在 MCS格式表中查找与所述第二 MCS索引对应的调制阶数 和传输块大小索引, 其中, 所述 MCS索引表中的第二 MCS索引为所述 MCS 格式表中索引的子集;
采用所述第二 MCS索引对应的调制阶数和传输块大小索引与所述用户 设备进行通信。
8、 根据权利要求 7所述的方法, 其特征在于, 所述在生效的 MCS索 引表中选择对应第二 MCS索引的第一 MCS索引之前, 还包括:
在物理层配置所述 MCS索引表;
与所述用户设备同步启动所述 MCS索引表, 以使得所述 MCS索引表生 效。
9、 根据权利要求 8所述方法, 其特征在于, 所述基站在物理层配置所述 MCS索引表之前, 还包括:
根据所述用户设备所处的场景,从所述 MCS格式表中为所述用户设备选 择至少一项 MCS索引, 将选定的所述 MCS索引生成所述 MCS索引表, 通 过高层信令向所述用户设备发送所述 MCS索引表; 或者, 根据所述用户设备所处的场景, 从预存的各 MCS 索引表中确定出所述 MCS索引表,通过高层信令将所述 MCS索引表的 MCS索引表标识发送给所 述用户设备,以使所述用户设备根据所述 MCS索引表标识,从预存的各 MCS 索引表中确定出所述 MCS索引表; 或者,
根据所述用户设备所处的场景,从所述 MCS格式表中为所述用户设备选 择至少一项 MCS索引, 将选定的所述 MCS索引生成 MCS位表, 通过高层 信令将所述 MCS 位表发送给所述用户设备, 以使得所述用户设备根据所述 MCS位表, 生成所述 MCS索引表。
10、 根据权利要求 9所述的方法, 其特征在于, 所述高层信令中还携带 生效时间, 用于指示所述 MCS索引表的启动时间;
所述与所述用户设备同步启动所述 MCS索引表, 包括:
根据所述生效时间, 与所述用户设备同时启动所述 MCS索引表, 以使得 所述 MCS索引表生效。
11、 根据权利要求 9所述的方法, 其特征在于, 所述在物理层配置所述 MCS索引表之后, 还包括:
接收所述用户设备发送的配置成功响应消息, 所述配置成功响应消息用 于指示所述用户设备的所述 MCS 索引表配置成功并在发送所述配置成功响 应消息后启动;
所述与所述用户设备同步启动所述 MCS索引表, 以使得所述 MCS索引 表生效, 包括:
接收到所述用户设备发送的配置成功响应消息后, 启动所述 MCS 索引 表, 以使得所述 MCS索引表生效。
12、 根据权利要求 9~11任一项所述的方法, 其特征在于, 还包括: 若检 测到所述用户设备所处的场景发生变化, 则重新选择 MCS索引。
13、 根据权利要求 7所述的方法, 其特征在于, 所述用户设备至少为一 个.
向用户设备发送所述第一 MCS 索引, 以使得所述用户设备在生效的 MCS索引表中查找与所述第一 MCS索引对应的第二 MCS索引,并根据所述 第二 MCS索引在 MCS格式表中查找与所述第二 MCS索引对应的调制阶数 和传输块大小索引之前, 还包括: 从所述 MCS格式表中选择至少一项 MCS索引, 将选定的所述 MCS索 引生成所述 MCS索引表, 通过广播消息向各所述用户设备发送所述 MCS索 引表; 或者,
从预存的各 MCS索引表中确定出所述 MCS索引表, 通过广播消息将所 述 MCS索引表的 MCS索引表标识发送给各所述用户设备, 以使各所述用户 设备根据所述 MCS索引表标识,从预存的各 MCS索引表中确定出所述 MCS 索引表; 或者,
从所述 MCS格式表中选择至少一项 MCS索引, 将选定的所述 MCS索 引生成 MCS位表, 通过广播消息将所述 MCS位表发送给各所述用户设备, 以使各所述用户设备根据所述 MCS位表, 生成所述 MCS索引表。
14、 一种用户设备, 其特征在于, 包括:
接收模块, 用于接收基站发送的第一调制与编码格式 MCS索引; 第一查找模块,用于在生效的 MCS索引表中查找与所述接收模块接收的 所述第一 MCS索引对应的第二 MCS索引;
第二查找模块,用于根据所述第一查找模块查找的第二 MCS索引在 MCS 格式表中查找与所述第二 MCS 索引对应的调制阶数和传输块大小索引, 其 中, 所述 MCS索引表中的第二 MCS索引为所述 MCS格式表中索引的子集; 通信模块,用于采用所述第二查找模块查找的所述第二 MCS索引对应 的调制阶数和传输块大小索引与所述基站进行通信。
15、 根据权利要求 14所述的用户设备, 其特征在于, 所述用户设备 还包括:
配置模块, 用于在物理层配置所述 MCS索引表;
启动模块,用于与所述基站同步启动所述配置模块配置的所述 MCS索引 表, 以使得所述 MCS索引表生效。
16、 根据权利要求 15所述的用户设备, 其特征在于,
所述接收模块还用于接收所述基站通过高层信令发送的所述 MCS索引 表; 或者,
所述接收模块还用于接收所述基站通过高层信令发送的 MCS索引表标 识;
所述用户设备还包括: 处理模块,用于根据所述接收模块接收的所述 MCS索引表标识, 从预存 的各 MCS索引表中确定出所述 MCS索引表; 或者,
所述接收模块,还用于接收所述基站通过高层信令发送的 MCS位表,所 述 MCS位表指示所述基站选定的 MCS;
所述处理模块,用于根据所述接收模块接收的所述 MCS位表, 生成所述
MCS索引表。
17、 根据权利要求 16所述的用户设备, 其特征在于, 所述接收模块接 收的所述高层信息还携带生效时间,用于指示所述 MCS索引表的启动时间; 所述启动模块, 用于根据所述接收模块接收的所述生效时间, 与所述基 站同时启动所述 MCS索引表, 以使得所述 MCS索引表生效。
18、 根据权利要求 16所述的用户设备, 其特征在于, 所述用户设备还 包括:
发送模块, 用于向所述基站发送配置成功响应消息, 所述配置成功响应 消息用于指示所述基站在收到所述配置成功响应消息后启动所述 MCS 索引 表;
所述启动模块具体用于在所述发送模块向所述基站发送配置成功响应消 息后,与所述基站同步启动所述 MCS索引表, 以使得所述 MCS索引表生效。
19、 根据权利要求 14所述的用户设备, 其特征在于,
所述接收模块, 还用于接收所述基站通过广播消息发送的所述 MCS索 引表; 或者,
所述接收模块, 还用于接收所述基站通过广播消息发送的 MCS索引表 标识;
所述处理模块,还用于根据所述接收模块接收的所述 MCS索引表标识, 从预存的各 MCS索引表中确定出所述 MCS索引表; 或者,
所述接收模块, 还用于接收所述基站通过广播消息发送的 MCS位表, 所述 MCS位表指示所述基站选定的 MCS;
所述处理模块,还用于根据所述接收模块接收的所述 MCS位表, 生成所 述 MCS索引表。
20、 一种基站, 其特征在于, 包括:
存储模块, 用于存储生效的调制与编码格式 MCS索引表; 选择模块,用于在所述存储模块存储的生效的 MCS索引表中选择对应 于第二 MCS索引的第一 MCS索引;
发送模块,用于向用户设备发送所述选择模块选择的所述第一 MCS索 引,以使得所述用户设备在生效的 MCS索引表中查找与所述第一 MCS索引 对应的第二 MCS索引, 并根据所述第二 MCS索引在 MCS格式表中查找与 所述第二 MCS索引对应的调制阶数和传输块大小索引, 其中, 所述 MCS索 弓 I表中的第二 MCS索引为所述 MCS格式表中索引的子集;
通信模块, 用于采用所述第二 MCS索引对应的调制阶数和传输块大小 索引与所述用户设备进行通信。
21、 根据权利要求 20所述的基站, 其特征在于, 所述基站还包括: 配置模块, 用于在物理层配置所述 MCS索引表;
启动模块, 用于与所述用户设备同步启动所述配置模块配置的所述 MCS 索引表, 以使得所述 MCS索引表生效。
22、 根据权利要求 21所述的基站, 其特征在于,
所述选择模块,用于根据所述用户设备所处的场景,从所述 MCS格式表 中为所述用户设备选择至少一项 MCS索引;
所述基站还包括:
生成模块, 用于将所述选择模块选定的所述 MCS索引生成所述 MCS索 引表;
所述发送模块还用于通过高层信令向所述用户设备发送所述 MCS 索引 表。
23、 根据权利要求 21所述的基站, 其特征在于,
所述选择模块,用于根据所述用户设备所处的场景,从预存的各 MCS索 引表中确定出所述 MCS索引表;
所述发送模块,用于通过高层信令将所述选择模块确定的 MCS索引表的
MCS索引表标识发送给所述用户设备, 以使所述用户设备根据所述 MCS索 引表标识, 从预存的各 MCS索引表中确定出所述 MCS索引表。
24、 根据权利要求 21所述的基站, 其特征在于,
所述选择模块,还用于根据所述用户设备所处的场景,从所述 MCS格式 表中为所述用户设备选择至少一项 MCS索引; 所述生成模块, 还用于将所述选择模块选定的所述 MCS索引生成 MCS 位表;
所述发送模块,还用于通过高层信令将所述生成模块生成的 MCS位表发 送给所述用户设备,以使得所述用户设备根据所述 MCS位表,生成所述 MCS 索引表。
25、 根据权利要求 22~24任一项所述的基站, 其特征在于,
所述发送模块发送的第一信息还携带生效时间,用于指示所述 MCS索引 表的启动时间;
所述启动模块, 用于根据所述发送模块发送的所述生效时间, 与所述用 户设备同时启动所述 MCS索引表, 以使得所述 MCS索引表生效。
26、 根据权利要求 22~24任一项所述的基站, 其特征在于, 所述基站还 包括:
接收模块, 用于接收所述用户设备发送的配置成功响应消息, 所述配置 成功响应消息用于指示所述用户设备的所述 MCS 索引表配置成功并在发送 所述配置成功响应消息后启动;
所述启动模块, 用于当所述接收模块接收到所述配置成功响应消息后, 与所述用户设备同步启动所述 MCS索引表, 以使得所述 MCS索引表生效。
27、 根据权利要求 22~26任一项所述的基站, 其特征在于, 所述基站还 包括:
检测模块, 用于若检测到所述用户设备所处的场景发生变化, 则重新选 择 MCS索引。
28、 根据权利要求 20所述的基站, 其特征在于, 所述基站还包括: 处理模块, 用于从所述 MCS格式表中选择至少一项 MCS索引, 将选定 的所述 MCS索引生成所述 MCS索引表;
所述发送模块, 还用于通过广播消息向各所述用户设备发送所述处理模 块生成的 MCS索引表; 或者
所述处理模块,用于从预存的各 MCS索引表中确定出所述 MCS索引表; 所述发送模块,还用于通过广播消息将所述处理模块确定的 MCS索引表 的 MCS索引表标识发送给各所述用户设备; 或者
所述处理模块, 用于从所述 MCS格式表中选择至少一项 MCS索引, 将 选定的所述 MCS索引生成 MCS位表;
所述发送模块,还用于通过广播消息将所述处理模块生成的所述 MCS位 表发送给各所述用户设备。
29、 一种用户设备, 其特征在于, 包括:
接收器, 用于接收基站发送的第一调制与编码格式 MCS索引;
处理器,用于在生效的 MCS索引表中查找与所述接收器接收的第一 MCS 索引对应的第二 MCS索引, 根据所述第二 MCS索引在 MCS格式表中查找 与所述第二 MCS索引对应的调制阶数和传输块大小索引, 其中, 所述 MCS 索引表中的第二 MCS索引为所述 MCS格式表中索引的子集,采用所述第二 MCS索引对应的调制阶数和传输块大小索引与所述基站进行通信。
30、 根据权利要求 29所述的用户设备, 其特征在于, 所述处理器还 用于:
在物理层配置所述 MCS索引表,与所述基站同步启动所述 MCS索引表, 以使得所述 MCS索引表生效。
31、 根据权利要求 30所述的用户设备, 其特征在于,
所述接收器还用于: 接收所述基站通过高层信令发送的所述 MCS索引 表; 或者,
所述接收器还用于, 接收所述基站通过高层信令发送的 MCS 索引表标 识,
所述处理器,还用于根据所述接收器接收的所述 MCS索引表标识,从预 存的各 MCS索引表中确定出所述 MCS索引表; 或者,
所述接收器,还用于接收所述基站通过高层信令发送的 MCS位表,所述 MCS位表指示所述基站选定的 MCS;
所述处理器, 还用于根据所述接收器接收的所述 MCS 位表, 生成所述 MCS索引表。
32、 根据权利要求 31所述的用户设备, 其特征在于,
所述接收器接收的所述高层信息还携带生效时间, 用于指示所述 MCS 索引表的启动时间;
所述处理器, 用于根据所述接收器接收的所述生效时间, 与所述基站同 时启动所述 MCS索引表, 以使得所述 MCS索引表生效。
33、 根据权利要求 31所述的用户设备, 其特征在于, 所述用户设备还 包括:
发射器, 用于向所述基站发送配置成功响应消息, 所述配置成功响应消 息用于指示所述基站在收到所述配置成功响应消息后启动所述 MCS索引表; 所述处理器具体用于在所述发射器向所述基站发送配置成功响应消息 后, 与所述基站同步启动所述 MCS索引表, 以使得所述 MCS索引表生效。
34、 根据权利要求 29所述的用户设备, 其特征在于,
所述接收器还用于接收所述基站通过广播消息发送的所述 MCS 索引 表; 或者,
所述接收器, 还用于接收所述基站通过广播消息发送的 MCS索引表标 识;
所述处理器, 还用于根据所述 MCS索引表标识, 从预存的各 MCS索引 表中确定出所述 MCS索引表; 或者,
所述接收器,还用于接收所述基站通过广播消息发送的 MCS位表,所述 MCS位表指示所述基站选定的 MCS;
所述处理器, 还用于根据所述 MCS位表, 生成所述 MCS索引表。
35、 一种基站, 其特征在于, 包括:
存储器, 用于存储生效的 MCS索引表;
处理器, 用于所述在存储器存储的、 且生效的调制与编码格式 MCS 索引表中选择对应于第二 MCS索引的第一 MCS索引;
发射器, 用于向用户设备发送所述处理器选择的第一 MCS索引, 以 使得所述用户设备在生效的 MCS索引表中查找与所述第一 MCS索引对应的 第二 MCS索引, 并根据所述第二 MCS索引在 MCS格式表中查找与所述第 二 MCS索引对应的调制阶数和传输块大小索引, 其中, 所述 MCS索引表中 的第二 MCS索引为所述 MCS格式表中索引的子集;
所述处理器还用于采用所述第二 MCS索引对应的调制阶数和传输块大 小索引与所述用户设备进行通信。
36、 根据权利要求 35所述的基站, 其特征在于, 所述处理器还用于: 在物理层配置所述 MCS索引表, 与所述用户设备同步启动所述 MCS索 弓 I表, 以使得所述 MCS索引表生效。
37、 根据权利要求 36所述的基站, 其特征在于,
所述处理器还用于: 根据所述用户设备所处的场景, 从所述 MCS格式 表中为所述用户设备选择至少一项 MCS索引, 将选定的所述 MCS索引生成 所述 MCS索引表;
所述发射器, 还用于通过高层信令向所述用户设备发送所述处理器生成 的所述 MCS索引表; 或者,
所述处理器,还用于根据所述用户设备所处的场景,从预存的各 MCS索 引表中确定出所述 MCS索引表;
所述发射器,还用于通过高层信令将所述处理器确定的所述 MCS索引表 的 MCS索引表标识发送给所述用户设备, 以使所述用户设备根据所述 MCS 索引表标识, 从预存的各 MCS索引表中确定出所述 MCS索引表; 或者, 所述处理器,还用于根据所述用户设备所处的场景,从所述 MCS格式表 中为所述用户设备选择至少一项 MCS 索引, 将选定的所述 MCS 索引生成 MCS位表;
所述发射器,用于通过高层信令将所述处理器生成的 MCS位表发送给所 述用户设备, 以使得所述用户设备根据所述 MCS位表, 生成所述 MCS索引 表。
38、 根据权利要求 37所述的基站, 其特征在于, 所述发射器发送的所述 高层信令中还携带生效时间, 用于指示所述 MCS索引表的启动时间;
所述处理器还用于根据所述生效时间, 与所述用户设备同时启动所述
MCS索引表, 以使得所述 MCS索引表生效。
39、 根据权利要求 37所述的基站, 其特征在于, 所述基站还包括: 接收器, 用于接收所述用户设备发送的配置成功响应消息, 所述配置成 功响应消息用于指示所述用户设备的所述 MCS 索引表配置成功并在发送所 述配置成功响应消息后启动;
所述处理器用于在所述接收器接收到所述用户设备发送的配置成功响 应消息后, 启动所述 MCS索引表, 以使得所述 MCS索引表生效。
40、 根据权利要求 37~39任一项所述的方法, 其特征在于, 所述处理器 还用于若检测到所述用户设备所处的场景发生变化, 则重新选择 MCS索引。
41、 根据权利要求 35所述的基站, 其特征在于, 所述处理器还用于从所述 MCS格式表中选择至少一项 MCS索引, 将选 定的所述 MCS索引生成所述 MCS索引表;
所述发射器,还用于通过广播消息向各所述用户设备发送所述 MCS索引 表; 或者,
所述处理器,还用于从预存的各 MCS索引表中确定出所述 MCS索引表; 所述发射器, 还用于通过广播消息将所述 MCS索引表的 MCS索引表标 识发送给各所述用户设备, 以使各所述用户设备根据所述 MCS索引表标识, 从预存的各 MCS索引表中确定出所述 MCS索引表; 或者,
所述处理器, 还用于从所述 MCS格式表中选择至少一项 MCS索引, 将 选定的所述 MCS索引生成 MCS位表;
所述发射器,还用于通过广播消息将所述 MCS位表发送给各所述用户设 备, 以使各所述用户设备根据所述 MCS位表, 生成所述 MCS索引表。
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