WO2011097931A1

WO2011097931A1 - Control format indicator transmission method and system

Info

Publication number: WO2011097931A1
Application number: PCT/CN2010/080411
Authority: WO
Inventors: 戴博; 曾萍; 吴欣; 左志松
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-02-11
Filing date: 2010-12-28
Publication date: 2011-08-18
Also published as: CN101789823A; CN101789823B

Abstract

A Control Format Indicator (CFI) transmission method and system are disclosed, and wherein the transmission method includes: configuring an indication signal in the Downlink Control Information (DCI) of a Physical Downlink Control Channel (PDCCH) of a current component carrier, the indication signal being used for indicating a component carrier, and a CFI of the component carrier or the way of acquiring the CFI, wherein the indicated component carrier is used for a Physical Downlink Shared Channel (PDSCH) transmission that corresponds to the PDCCH; and sending the DCI to a terminal UE. With the present invention, the problem that all of the possible combinations of the CFIs and CIs can not be indicated completely is solved, and therefore the technical effects of avoiding CFI misdetection, having a low overhead, etc. can be achieved.

Description

TECHNICAL FIELD The present invention relates to the field of mobile wireless communications, and in particular, to a transmission method and a transmission system for controlling a format indication value. A radio frame in a Long Term Evolution (LTE) system includes a frame structure of a Frequency Division Duplex (FDD) mode and a Time Division Duplex (TDD) mode.

FDD mode frame structure, as shown in Figure 1, a 10 millisecond (ms) radio frame consists of twenty slots of length 0.5ms, numbered 0~19, slot 2i and 2i+l Sub frame i of length lms.

The frame structure of the TDD mode, as shown in FIG. 2, a 10 ms radio frame is composed of two half frames of 5 ms length, one field includes a subframe of length lms, and subframe i is defined as 2 The slots 2i and 2i+1 are 0.5 ms long. In the above two frame structures, for a normal cyclic prefix (Normal CP, Normal Cyclic Prefix), one slot contains seven Orthogonal Frequency Division Multiplexing (OFDM) symbols with a length of 66.7 and less ( us ). The length of the first OFDM symbol is 5.2 lus, and the length of the remaining 6 OFDM symbols is 4.69 us. For the extended cyclic prefix (Extended Cyclic Prefix), one slot contains 6 OFDM symbols, all OFDM symbols. The length of the CP is 16.67 us. When the LTE system uses the regular cyclic prefix (ormal Cyclic Prefix), one slot contains 7 lengths of uplink/downlink OFDM symbols, and the OFDM symbol numbers are 0, 1, 2 in order of transmission time. 3, 4, 5, 6. When the LTE system adopts Extended Cyclic Prefix, one slot contains 6 lengths of OFDM uplink/downlink symbols, and the OFDM symbol number is 0, 1 in order of transmission time. 2, 3, 4, 5. The following three downlink physical control channels are also defined in the LTE system: Physical Downlink Format Indicator Channel (PCFICH, Physical Control Format Indicator Channe) l); Physical Hybrid Automatic Retransmission Request Channel (PHICH, Physical Hybrid Automatic Retransmission Request Indicator Channel ); Physical Downlink Control Channel (PDCCH). among them,

(1) The information carried by the PCFICH is used to indicate the number of OFDM symbols for transmitting the PDCCH in one subframe, and is transmitted on the first OFDM symbol of the subframe, where the frequency location is determined by the system downlink bandwidth and the cell identifier (ID, Identity). determine. The indication signaling is called "CFI (Control Format Indicator) CFI value 1, 2 or 3. For the system bandwidth ^^> ¹ system, for downlink control information (DCI, Downlink Control Information M The number of Orthogonal Frequency Division Multiplexing OFDM symbols transmitted is 1, 2 or 3, indicated by the value of CFI. For systems with system bandwidth ^ ^{≤ 1} , for downlink control information (DCI, Downlink Control Information) transmission The number of frequency division multiplexing OFDM symbols is 2, 3 or 4, indicated by CFI+1.

(2) PHICH is used for the acknowledgement/negative acknowledgement (ACK/NACK) feedback information of the uplink transmission data. The number of PHICHs and the time-frequency position can be determined by the system message and the cell ID in the Physical Broadcast Channel (PBCH) of the downlink carrier where the PHICH is located. (3) PDCCH is used to carry downlink control information (DCI, Downlink Control)

Information ), including: uplink and downlink scheduling information, and uplink power control information. The PDCCH DCI format (DCI format) is divided into the following types: DCI format 0, DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A, DCI format 3 and DCI format 3 A, etc.; where: DCI format 0, used for DCI format 0 to indicate a physical uplink shared channel (PUSCH,

Scheduling of Physical Uplink Shared Channel );

DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI format ID is used for different modes of PDSCH (Physical Downlink Shared Channel) codeword scheduling; DCI format 2, DCI format 2A is used for Different modes of space division multiplexing;

The DCI format 3 and the DCI format 3A are used for different modes of the power control command of the physical uplink control channel (PUCCH, Physical Uplink Control Channel) and the PUSCH. The version number of LTE corresponds to the protocol of R8 (Release 8), which defines six kinds of bandwidths: 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz. An evolved version of LTE-Advanced (More Advancements for E-UTRA)^LTE Release-8. In addition to meeting or exceeding all relevant requirements of 3GPP TR 25.913: "Requirements for Evolved UTRA (E-UTRA) and Evolved UTRAN (E-UTRAN)", it also meets or exceeds the IMT-Advanced proposed by the International Telecommunication Union ITU-R. demand. The requirements for backward compatibility with LTE Release-8 refer to: LTE Release-8 terminals can work in LTE-Advanced networks; LTE-Advanced terminals can be used in LTE Release-

Working in the network of 8. In addition, LTE-Advanced should be able to be configured in different sizes, including LTE Release-

8 wider spectrum configurations (such as 100MHz continuous frequency resources) work to achieve higher performance and target peak rates. Considering compatibility with LTE Release-8, for bandwidths greater than 20 MHz, Carrier aggregation is used, that is, two or more Component Carriers are aggregated to support downlink transmissions greater than 20 MHz. Bandwidth; The terminal can receive one or more Component Carriers at the same time according to its capabilities. According to the UE carrier aggregation capability, the interference environment, and the system load condition, the UE's proprietary Downlink Component Carrier Set (DL CC Set) can be configured through high-level signaling. When the system transmits downlink data to the UE, the PDSCH can be transmitted in any of the component carriers in a given DL CC Set. An LTE-A terminal having a bandwidth receiving capability exceeding 20 MHz can simultaneously receive transmissions on multiple component carriers. The terminal of LTE Rel-8 can only receive transmission on one component carrier, for example, the structure of the component carrier follows the Rel-8 specification. Currently, the LTE-Advanced standard has the following conclusions on the form of PDCCH (Physical Downlink Control Channel) for downlink control signaling:

1) A PDCCH on one component carrier indicates a PDSCH resource of the same component carrier and a PUSCH resource of a uniquely connected uplink component carrier There is no Carrier indicator field in the DCI format, for example, the structure of the PDCCH in the Rel-8 version (same encoding, the same CCE-based resource mapping) and DCI formats.

2) The PDCCH on one component carrier uses a carrier indicator field or a carrier indicator field to indicate a PDSCH or PUSCH resource of one of the plurality of component carriers.

Rel-8's DCI formats extend the 3 bit carrier indicator i or (Carrier indicator field); Reuse the structure of the Rel-8 PDCCH (same coding, same CCE-based resource mapping); need to study the component carrier carrying the PDSCH The PCFICH detects the wrong solution.

3) It is advisable to limit the number of blind checks in both ways.

4) Semi-static setting of the presence or absence of the carrier indicator (CI) field. When the PDCCH on one component carrier uses the carrier indicator field or the carrier indicator field to indicate the PDSCH resource of another component carrier, if the UE detects an error on the PCFICH channel of the component carrier where the PDSCH is located, the UE generates OFDM symbols for the PDSCH. Misjudgement and data acquisition error of the transmission bearer block carried by the PDSCH, the UE will store the erroneous data in the HARQ buffer (buffer) and feed back the NACK, and the subsequent HARQ merge will generate an error, which has a certain defect to the performance of the system. influences. In particular, in the LTE-A carrier aggregation scenario, an extension carrier type may be introduced. The extended carrier cannot work independently, and must belong to a part of a set of component carriers, and at least one of the component carriers in the set Can work independently. The extended carrier is not visible to LTE UEs. For the sake of simplicity of design and considering various possible application scenarios, it is highly probable that the extension carrier is configured without PDCCH. The PDSCH resource of the extension carrier must be scheduled by the PDCCH of another component carrier. For the PDCCH on one component carrier, the cross-carrier scheduling of the PDSCH resource of another component carrier, in which case the CFI value of the component carrier where the PDSCH is located is determined according to the PCFICH, then the PCFICH channel Detection errors have an adverse effect on system performance. At present, in order to avoid CFI error detection, the following schemes are generally used in the transmission scheme: 1) The CFI CFI and CI joint coding is carried in the DCI Format; or the CFI is directly indicated by 2 bits in the DCI. 2) PDSCH

The starting position of the PDSCH is fixed at the nth OFDM symbol of the subframe; or the starting position of the PDSCH is semi-statically configured through the upper layer. 3) The CC mask implies CFI information. However, the above solutions have defects, as follows: 1) If CFI and CI joint coding are used, in order not to increase the additional overhead after the introduction of CFI information, and when the carrier aggregation number If the value of the joint indication is not used, the overhead of the joint coding is set to 3 bits. However, when the number of carrier aggregations of the UE is more than three, the 3-bit signaling cannot completely indicate all possible. The combination of CFI and CI. If the CFI is directly indicated by 2 bits in the DCI, the signaling overhead is large. 2) If the PDSCH mapping method is adopted, the spectrum utilization efficiency is lowered because the starting position of the PDSCH is not flexible.

3) If the CRC mask is used to imply CFI information, multiple UE-IDs (User equipment identity) are occupied. SUMMARY OF THE INVENTION It is not possible to fully indicate all possible CFIs in the transmission method of the related art CFI value.

The problem of the combination of CIs, the main object of the present invention is to provide a transmission method and transmission system for controlling format indication values to solve at least one of the above problems. According to an aspect of the present invention, a method for transmitting a control format indication value is provided, which includes: configuring indication signaling in a downlink control information DCI of a physical downlink control channel PDCCH on a current component carrier, indicating signaling For indicating the component carrier, and indicating the control format of the component carrier The indication or the manner of obtaining the control format indication value, where the indicated component carrier is used for transmission of the physical downlink shared channel PDSCH corresponding to the PDCCH; and the DCI is sent to the terminal UE. The component carrier indicated by the indication signaling includes: a first component quantity carrier and a second component quantity carrier, wherein the first component quantity carrier is different from the second component quantity carrier, and the first component quantity carrier and the second component quantity carrier are both The current component carrier is not included, the control format indication value of the first component amount carrier is indicated by the indication signaling, and/or the manner of obtaining the control indication value of the second component amount carrier is indicated by the indication signaling. The component carrier indicated by the indication signaling further includes: a current component carrier, wherein the current component carrier is indicated by the indication signaling. The manner of obtaining the control format indication value of the second component quantity carrier by using the following steps: indicating the control format indication value of the second component quantity carrier by using a predefined manner or by high layer signaling. The manner of obtaining the control indication value of the current component carrier includes: obtaining, by using a physical downlink control format indication channel PCFICH of the current component carrier, a control indication value of the current component carrier. The indicated component carrier includes the following four component carriers: a current component carrier C0, a first component carrier C1, a second component carrier C2, and a third component carrier C3, and the eight states indicating signaling respectively indicate the first indication information to the eighth The indication information; or the indicated component carrier includes: a first component carrier C1, a second component carrier C2, and a third component carrier C3, and does not include the current component carrier CO, and any seven of the eight states indicating signaling are respectively represented a second indication information to the eighth indication information, where the first indication information is used to indicate that the component carrier is a CO, and the manner in which the CO obtains the control format indication value is a physical downlink control format indication channel (PCFICH) for de-CO; And indicating that the component carrier is C1, and indicating that the control format indication value of C1 is the first indication value a0; the third indication information is used to indicate that the component carrier is C1, and indicating that the control format indication value of C1 is the second indication value The fourth indication information is used to indicate that the component carrier is C1, and indicates that the control format indication value of C1 is the third indication value a2; the fifth indication information is used to indicate the point The carrier is C2, and indicates that the control format indication value of C2 is the first indication value a0; the sixth indication information is used to indicate that the component carrier is C2, and the control format indication value of C2 is indicated as the second indication value a1; The information is used to indicate that the component carrier is C2, and indicates that the control format indication value of C2 is the third indication value a2; the eighth indication information is used to indicate that the component carrier is C3, and the manner of obtaining the control format indication value is predefined. The way is indicated by high layer signaling. The indicated component carrier includes the following five component carriers: a current component carrier C0, a first component carrier C1, a second component carrier C2, a third component carrier C3, and a fourth component carrier C4, the indication signal Any one of the eight states of the command indicates the first indication information to the seventh indication information, respectively; or the indicated component carrier includes: the first component carrier C1, the second component carrier C2, the third component carrier C3, and the fourth component Any one of the eight states of the indicator C4, which does not include the current component carrier C0, indicates the second indication information to the seventh indication information, where the first indication information is used to indicate that the component carrier is C0. The method for obtaining the control format indication value by the CO is the physical downlink control format indication channel (PCFICH) of the CO; the second indication information is used to indicate that the component carrier is Cl, and the control format indication value of the C1 is indicated by the first indication value aO; The third indication information is used to indicate that the component carrier is C1, and indicates that the control format indication value of C1 is the second indication value a1; the fourth indication information is used to indicate that the component carrier is Cl, and indicates that the control format indication value of C1 is The third indication value a2; the fifth indication information, used to indicate that the component carrier is C2, and indicates that the manner of obtaining the control format indication value is a predefined manner or The sixth indication information is used to indicate that the component carrier is C3, and indicates that the manner of obtaining the control format indication value is a predefined manner or is indicated by the high layer signaling; the seventh indication information is used to indicate that the component carrier is C4, and indicates The manner of obtaining the control format indication value is in a predefined manner or indicated by high layer signaling. The indicated component carrier includes the following six component carriers: a current component carrier CO, a first component carrier C1, a second component carrier C2, a third component carrier C3, a fourth component carrier C4, and a fifth component carrier C5, indicating signaling The eight states respectively indicate the first indication information to the eighth indication information; or the indicated component carriers include: a first component carrier C1, a second component carrier C2, a third component carrier C3, a fourth component carrier C4, and a fifth component carrier. C5, without the current component carrier CO, any of the eight states of the indication signaling respectively represent the second indication information to the eighth indication information; wherein the first indication information is used to indicate that the component carrier is CO, CO The method for obtaining the control format indication value is the physical downlink control format indication channel PCFICH for de-CO; the second indication information is used to indicate that the component carrier is C1, and the control format indication value of C1 is indicated as the first indication value aO; The information is used to indicate that the component carrier is C1, and indicates that the control format indication value of C1 is the second indication value a1; and the fourth indication information is used to indicate that the component carrier is C1. The control format indication value indicating C1 is the third indication value a2; the fifth indication information is used to indicate that the component carrier is C2, and the manner of obtaining the control format indication value is a predefined manner or indicated by high layer signaling; The indication information is used to indicate that the component carrier is C3, and indicates that the manner of obtaining the control format indication value is in a predefined manner or is indicated by the high layer signaling; the seventh indication information is used to indicate that the component carrier is C4, and the acquisition control format is indicated. The manner of indicating the value is in a predefined manner or indicated by the high layer signaling. The eighth indication information is used to indicate that the component carrier is C5, and indicates that the manner of obtaining the control format indication value is in a predefined manner or indicated by high layer signaling. The indicated component carrier includes the following 7 component carriers: a current component carrier C0, a first component carrier C1, a second component carrier C2, a third component carrier C3, a fourth component carrier C4, a fifth component carrier C5, and a sixth component carrier. C6, any one of the eight states of the indication signaling respectively indicates the first indication information to the seventh indication information; or the indicated component carrier includes: the first component carrier C1, the second component carrier C2, and the third component carrier C3, the fourth component carrier C4, the fifth component carrier C5, and the sixth component carrier C6, excluding the current component carrier CO, and any six of the eight states indicating signaling respectively represent the second indication information to the seventh indication The first indication information is used to indicate that the component carrier is the CO, and the CO obtains the control format indication value in the manner of the physical downlink control format indication channel (PCFICH) for de-CO; the second indication information is used to indicate that the component carrier is Cl. And indicating that the method for obtaining the control format indication value is in a predefined manner or by using a high layer signaling, and the third indication information is used to indicate that the component carrier is C2. And indicating that the manner of obtaining the control format indication value is in a predefined manner or by using a high-level signaling indication; the fourth indication information is used to indicate that the component carrier is C3, and indicating that the manner of obtaining the control format indication value is a predefined manner or The fifth indication information is used to indicate that the component carrier is C4, and the method for indicating that the control format indication value is obtained is in a predefined manner or indicated by the high layer signaling; the sixth indication information is used to indicate that the component carrier is C5, and indicating that the manner of obtaining the control format indication value is in a predefined manner or indicated by the high layer signaling; the seventh indication information is used to indicate that the component carrier is C6, and the manner of obtaining the control format indication value is a predefined manner. Or indicated by high-level signaling. The indicated component carrier includes the following 8 component carriers: a current component carrier C0, a first component carrier C1, a second component carrier C2, a third component carrier C3, a fourth component carrier C4, a fifth component carrier C5, and a sixth component carrier. C6 and the seventh component carrier C7, the eight states indicating the signaling respectively represent the first indication information to the eighth indication information; or the indicated component carriers include: the first component carrier C1, the second component carrier C2, and the third component carrier C3, the fourth component carrier C4, the fifth component carrier C5, the sixth component carrier C6, and the seventh component carrier C7, excluding the current component carrier C0, indicating that any of the eight states of the signaling represents the second Instructing the information to the eighth indication information, where the first indication information is used to indicate that the component carrier is C0, and the manner in which the CO acquires the control format indication value is a physical downlink control format indication channel (PCFICH) for de-CO; Instructing the component carrier to be C1, and indicating that the manner of obtaining the control format indication value is in a predefined manner or indicated by high layer signaling; the third indication information, The indication component carrier is C2, and the manner of obtaining the control format indication value is in a predefined manner or indicated by the high layer signaling. The fourth indication information is used to indicate that the component carrier is C3, and indicates that the control format indication value is obtained. The fifth indication information is used to indicate that the component carrier is C4, and indicates that the manner of obtaining the control format indication value is in a predefined manner or indicated by high layer signaling; The sixth indication information is used to indicate that the component carrier is C5, and indicates that the manner of obtaining the control format indication value is a predefined manner or is indicated by the high layer signaling; the seventh indication information is used to indicate that the component carrier is C6, and the acquisition control is indicated. The format indication value is in a predefined manner or indicated by the high layer signaling; the eighth indication information is used to indicate that the component carrier is C7, and the manner of obtaining the control format indication value is a predefined manner or indicated by high layer signaling. . The CFI value obtained by the indication signaling or the high layer signaling or the predefined manner configured in the DCI indicates the initial OFDM symbol number when the PDSCH is mapped to the physical resource in the subframe, or the CFI value indicates that it is used in the subframe. The number of OFDM symbols that transmit the PDCCH. When the control domain is not configured on the indicated component carrier, the component carrier acquires a CFI value by using indication signaling or high-layer signaling or a predefined manner configured in the DCI, where the CFI value indicates that the PDSCH is mapped to the physical resource in the subframe. Start OFDM symbol number. The first indication value a0=l, the second indication value a=2, the third indication value a2=3, or the first indication value when the downlink system bandwidth is less than or equal to 10 PRBs (Physical Resource Blocks) A0=2, the second indication value a=3, the third indication value a2=4, when the downlink system bandwidth is greater than 10 PRBs, the first indication value a0=l, the second indication value a==3, the third indication value A2=3. When no control field is configured on the component carrier transmitting the PDSCH, the first indication value a0, the second indication value a1, and the third indication value a2 are any three values of 0, 1, 2, 3. The predefined manner includes one of the following: The control format indication value is equal to the control format indication value of the current component carrier; or the control format indication value is a fixed value n. The fixed value is n=3, or a fixed value of n=4 when the downlink system bandwidth is less than or equal to 10 PRBs, and a fixed value of n=3 when the downlink system bandwidth is greater than 10 PRBs. The indication signaling is 3 bits. According to another aspect of the present invention, a transmission system for controlling a format indication value is provided, including: a configuration module, configured to configure indication signaling in downlink control information DCI of a physical downlink control channel PDCCH on a current component carrier, The indication signaling is used to indicate a component carrier, and indicates a control format indication value of the component carrier or a manner of acquiring a control format indication value, where the indicated component carrier is used for transmission of a physical downlink shared channel PDSCH corresponding to the PDCCH; Used to send DCI to the terminal UE. The foregoing transmission system further includes: a receiving module, configured to receive a DCI from the sending module; an acquiring module, configured to acquire a control format indication value indicated by the indication signaling in the DCI, or according to one of the following manners indicated by the indication signaling Obtaining the control format indication value: indicating the control format indication value by the high layer signaling; or controlling the format indication value to be equal to the control format indication value of the current component carrier; or controlling the format indication value to be a fixed value n. With the present invention, before transmitting the CFI, a predetermined bit is used as the indication signaling in the DCI to indicate a component carrier for transmitting the PDSCH, and a CFI value of the component carrier or a manner of obtaining a CFI value of the component carrier. In this way, the problem that the combination of all possible CFIs and CIs cannot be completely indicated is solved, and the technical effects of avoiding CFI misdetection and less overhead are achieved. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of a frame structure of an FDD mode in the prior art; FIG. 2 is a schematic diagram of a frame structure of a TDD mode in the prior art; FIG. 3 is a transmission system for controlling a format indication value according to an embodiment of the present invention; FIG. 4 is a preferred flowchart of a method for transmitting a control format indication value according to an embodiment of the present invention; and FIG. 5 is a preferred schematic diagram of a transmission system for controlling a format indication value according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. In the LTE-Advanced radio communication system, in order to effectively avoid the adverse effects caused by PCFICH detection errors during cross-carrier scheduling, in cross-carrier scheduling, in the DCI Format of the PDCCH, when CFI and CI are jointly coded, 3 bits can be used. As the indication signaling, the 3-bit indication signaling corresponds to a combination of 8 (or 8 or less) CFI and CI, and the meaning of the 8 combinations is determined by the number of component carriers configurable by the configured component carrier. 3 is a schematic diagram of a physical transmission system for controlling a format indication value according to an embodiment of the present invention. As shown in FIG. 3, the transmission system of the control format indication value of this embodiment includes: a base station 31 and a terminal UE 32. The base station 31 indicates the combination of all possible CFIs and CIs by using the indication signaling, and sends the indication signaling to the terminal UE 32. The specific transmission method is shown in FIG. 4 . 4 is a flow chart of a method of transmitting a control format indication value according to an embodiment of the present invention. As shown

As shown in Fig. 3, the transmission system of the control format indication value in Fig. 3 can use the following steps to transmit the control format indication value:

541. The base station 31 configures indication signaling in the downlink control information DCI of the physical downlink control channel PDCCH on the current component carrier, where the indication signaling is used to indicate the component carrier, and indicates a control format indication value or an acquisition control format indication of the component carrier. a value mode, where the indicated component carrier is used for transmission of a physical downlink shared channel PDSCH corresponding to the PDCCH. Preferably, the DCI includes 3-bit indication signaling.

542. The base station 31 sends the DCI to the terminal UE 32. In a preferred manner, the component carrier indicated by the signaling includes: a first component quantity carrier and a second component quantity carrier, where the first component quantity carrier is different from the second component quantity carrier, and the first component quantity carrier wave The second component amount carrier does not include the current carrier component, and the control format indication value of the first component amount carrier is indicated by the indication signaling, and/or the manner of acquiring the control indication value of the second component amount carrier is indicated by the indication signaling. In another preferred manner, the component carrier indicated by the indication signaling includes: a current component carrier, a first component quantity carrier, and a second component quantity carrier, where the first component quantity carrier is different from the second component quantity carrier, the first The control format indication value of the group component carrier is indicated by the indication signaling, and the manner of obtaining the control indication value of the current component carrier and the second component quantity carrier is indicated by the indication signaling. The manner of obtaining the control format indication value of the second component quantity carrier may include: using a predefined manner or by high layer signaling indication. The manner of obtaining the control indication value of the current component carrier includes: obtaining, by using a physical downlink control format indication channel PCFICH of the current component carrier, a control indication value of the current component carrier. In the above two preferred manners, when the PDCCH and the PDSCH are located on the same carrier or not located on the same carrier, all possible combinations of CFI and CI can be indicated, thereby avoiding misdetecting the CFI at the receiving end, and the system Technical effects such as low overhead. Specifically, when configuring the PDCCH on one component carrier to indicate the PDSCH of no more than three component carriers, the CFI value of the component carrier scheduled by the cross carrier is directly determined by 3 bits of CFI and CI jointly encoded in the physical downlink control channel. . Specifically, when configuring a PDCCH on one component carrier to indicate a PDSCH of more than three component carriers, a CFI value of a component carrier that is cross-carrier scheduled may be directly indicated by 3 bits jointly coded by CFI and CI in the physical downlink control channel. Or obtained by a predefined manner indicated by the 3-bit or by a high-level signaling manner indicated by the 3-bit. By combining the dynamic signaling indication with the manner indicated by the predefined mode or the high-level signaling, the UE can obtain all possible combinations of CFI and CI, thereby avoiding misdetecting the CFI at the receiving end, and the overhead is relatively low. Small technical effects. The indication information in the case where the number of indicated component carriers is different in the above step S41 will be described in detail below by way of an embodiment. Embodiment 1 When configuring a PDCCH on a current component carrier CO to indicate a PDSCH of 2 component carriers (eg, component carriers CO and C1) (specifically, a first DCI in the PDCCH indicates a PDSCH on the CO, a second DCI indication PDSCH on C1), the above 3-bit values 000 to 111 can respectively indicate the following indications:

1) The value of the above 3 bits is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier CO, and the manner in which the CO acquires the control format indication value is the PCFICH of the component carrier CO;

2) The value of the above 3-bit 001 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C1, and the CFI of the component carrier C1 is 1.

3) The value of the above 3-bit 010 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C1, and the CFI of the component carrier C1 is 2;

4) The value of the above 3-bit 011 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C1, and the CFI of the component carrier C1 is 3.

) 100, 101, 110, 111 are default values. The correspondence between one of the eight types of the above three bits and one of the above four types of indication information is only an example. The present embodiment is not limited thereto, and the four types of indication information may be the same as the above three bits. Any four of the eight values correspond in any order. In this way, in the case of the solution in this embodiment, in the case that the PDCCH can be configured to indicate the PDSCH of the two component carriers, the sender can indicate all possible combinations of CFI and CI, thereby avoiding misdetecting the CFI at the receiving end, and Technical effects such as low system overhead. As an alternative manner, when the DCI schedules the PDSCH of the current component carrier CO, the DCI does not include the 3-bit indication signaling; and when the DCI indicates C1, the 3-bit indication signaling in the DCI only indicates the foregoing. 2) - 4) One of the instructions. Of course, in this alternative manner, the correspondence between the eight types of the three bits and the three types of indication information in the alternative manner is only an example, and the embodiment is not limited thereto, and the above 2) ~ 4) 3 The indication information may correspond to any three of the eight values of the above three bits in an arbitrary order. In this way, in the case that the indicated component carrier is not the current component carrier, that is, the PDCCH and the PDSCH are not transmitted on the same component carrier, the sender can also indicate all possible combinations of CFI and CI, thereby achieving avoidance at the receiving end. Technical effects such as wrong detection of CFI and low system overhead. Embodiment 2 When configuring a PDCCH on a current component carrier CO to indicate a PDSCH of three component carriers (for example, component carriers C0, C1, and C2), the values of the above three bits 000 to 111 may respectively indicate the following indication information: 1 The value of the above 3 bits is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier CO, and the mode of the CO acquisition control format indication value is the PCFICH of the component carrier CO;

4) The value of the above 3-bit 011 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C1, and the CFI of the component carrier C1 is 3;

5) The value of 100 bits is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C2, and the CFI of the component carrier C2 is 1. 6) The value of the above 3-bit 101 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C2, and the CFI of the component carrier C2 is 2;

7) The value of the above 3-bit 110 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C2, and the CFI of the component carrier C2 is 3. 8) 111 is the default value. The correspondence between one of the eight types of the three bits and one of the seven types of indication information is only an example. The present embodiment is not limited thereto, and the foregoing seven types of indication information may be compared with the eight types of the above three bits. Any of the 7 in any order - corresponding. In this way, with the solution in this embodiment, in the case that the PDCCH can be configured to indicate the PDSCH of the three component carriers, the sender can indicate all possible combinations of CFI and CI, thereby avoiding misdetecting the CFI at the receiving end, and Technical effects such as low system overhead. As an alternative, when the DCI schedules the PDSCH of the current component carrier CO, the DCI does not include the 3-bit indication signaling; and when the DCI indicates CI, C2, the 3-bit indication signaling in the DCI is only Indicate one of the above 2) ~ 7) indications. Of course, in this alternative manner, the correspondence between the eight types of the three bits and the six types of indication information in the alternative manner is only an example, and the embodiment is not limited thereto, and the above 2) ~ 7) 6 The indication information may correspond to any of the eight values of the above three bits in any order. In this way, in the case that the indicated component carrier is not the current component carrier, that is, the PDCCH and the PDSCH are not transmitted on the same component carrier, the sender can also indicate all possible combinations of CFI and CI, thereby achieving avoidance at the receiving end. Technical effects such as wrong detection of CFI and low system overhead. Embodiment 3 When configuring a PDCCH on a current component carrier CO to indicate a PDSCH of four component carriers (for example, component carriers C0, Cl, C2, and C3), the above-mentioned 3-bit values 000 to 111 may respectively indicate the following indication information. : 1) The value of the above 3 bits is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier CO, and the manner in which the CO acquires the control format indication value is the PCFICH of the component carrier CO;

2) The value of the above 3-bit 001 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C1, and the CFI of the component carrier C1 is 1; 3) The value of the above 3-bit 010 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C1, and the CFI of the component carrier C1 is 2;

4) The value of the above 3-bit 011 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C1, and the CFI of the component carrier C1 is 3; 5) the value of the above 3-bit 100 is used to indicate the corresponding PDCCH. The PDSCH is transmitted on the component carrier C2, and the CFI of the component carrier C2 is 1;

6) The value of the above 3-bit 101 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C2, and the CFI of the component carrier C2 is 2;

7) The value of the above 3-bit 110 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C2, and the CFI of the component carrier C2 is 3;

The above-mentioned 3-bit value 111 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C3, and the CFI value indicating the component carrier C3 is obtained by a predefined manner or indicated by higher layer signaling. The correspondence between one of the eight types of the three bits and one of the eight types of indication information is only an example. The present embodiment is not limited thereto, and the eight types of indication information may be compared with the eight types of the above three bits. Arbitrary order - corresponding. In this way, with the solution in this embodiment, in the case that the PDCCH can be configured to indicate the PDSCH of the four component carriers, the sender can indicate all possible combinations of CFI and CI, thereby avoiding misdetecting the CFI at the receiving end, and Technical effects such as low system overhead. As an alternative, when the DCI schedules the PDSCH of the current component carrier CO,

The DCI does not include the 3-bit indication signaling. When the DCI indicates CI, C2, and C3, the 3-bit indication signaling in the DCI indicates only one of the above 2) to 8) indication information. Of course, in this alternative manner, the correspondence between the eight types of the three bits and the seven types of indication information in the alternative manner is only an example, and the embodiment is not limited to the foregoing seven types of indication information and the foregoing Any seven of the eight values of the bits are in any order - corresponding. In this way, in the case that the indicated component carrier is not the current component carrier, that is, the PDCCH and the PDSCH are not transmitted on the same component carrier, the sender can also indicate all possible combinations of CFI and CI, thereby achieving avoidance at the receiving end. Technical effects such as wrong detection of CFI and low system overhead. Example 4 When configuring the PDCCH on the current component carrier CO to indicate the PDSCH of the five component carriers (for example, component carriers C0, Cl, C2, C3, and C4), the above-mentioned 3-bit values 000 to 111 may respectively indicate the following indications. :

5) The value of the above 3 bits is 100, and is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C2, and the CFI value of the component carrier C2 may be obtained in a predefined manner or indicated by high layer signaling.

6) 101 default value ^

The above-mentioned 3-bit value 110 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C4, and the CFI value of the component carrier C4 may be obtained in a predefined manner or indicated by high-level signaling;

The above-mentioned 3-bit ear value 111 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C3, and the CFI value of the component carrier C3 can be obtained in a predefined manner or indicated by higher layer signaling. The correspondence between one of the eight types of the three bits and one of the seven types of indication information is only an example. The present embodiment is not limited thereto, and the foregoing seven types of indication information may be compared with the eight types of the above three bits. Any of the 7 in any order - corresponding. In this way, with the solution in this embodiment, in the case that the PDCCH can be configured to indicate the PDSCH of the five component carriers, the sender can indicate all possible combinations of CFI and CI, thereby avoiding misdetecting the CFI at the receiving end, and Technical effects such as low system overhead. As an alternative, when the DCI schedules the PDSCH of the current component carrier CO, the DCI does not include the 3-bit indication signaling; and when the DCI indicates CI, C2, C3, C4, the 3-bit in the DCI The indication signaling only indicates one of the above 2) ~ 5), 7) and 8) indication information. Of course, in this alternative manner, the correspondence between the eight types of the three bits and the six types of indication information in the alternative manner is only an example, and the embodiment is not limited thereto, and the foregoing six types of indication information may be Any six of the eight values of the above three bits are in any order - corresponding. In this way, in the case that the indicated component carrier is not the current component carrier, that is, the PDCCH and the PDSCH are not transmitted on the same component carrier, the sender can also indicate all possible combinations of CFI and CI, thereby achieving avoidance at the receiving end. Technical effects such as wrong detection of CFI and low system overhead. Embodiment 5 When configuring a PDCCH on a current component carrier CO to indicate a PDSCH of six component carriers (for example, component carriers C0, Cl, C2, C3, C4, and C5), the above 3-bit values 000 to 111 may be respectively Indicates the following instructions:

1) The above 3-bit ear value is 000, which is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier CO, and the manner in which the CO acquires the control format indication value is the PCFICH of the component carrier CO;

2) The above 3-bit ear value 001 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C1, and the CFI of the component carrier C1 is 1.

3) The 3-bit ear value 010 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C1, and the CFI of the component carrier C1 is 2; 4) the 3-bit ear value 011 is used to indicate the PDCCH. The corresponding PDSCH is transmitted on the component carrier C1, and the CFI of the component carrier C1 is 3;

The above-mentioned 3-bit ear value is 100, which is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C2, and the CFI value of the component carrier C2 may be obtained in a predefined manner or indicated by high-layer signaling;

The above-mentioned 3-bit value 101 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C5, and the CFI value of the component carrier C5 may be obtained in a predefined manner or indicated by high-layer signaling; The above-mentioned 3-bit value 110 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C4, and the CFI value of the component carrier C4 may be obtained in a predefined manner or indicated by high-layer signaling;

The above-mentioned 3-bit value 111 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C3, and the CFI value of the component carrier C3 can be obtained in a predefined manner or indicated by high-layer signaling. The correspondence between one of the eight types of the three bits and one of the eight types of indication information is only an example. The present embodiment is not limited thereto, and the eight types of indication information may be compared with the eight types of the above three bits. Any order - corresponding. In this way, with the solution in this embodiment, in the case that the PDCCH can be configured to indicate the PDSCH of the six component carriers, the sender can indicate all possible combinations of CFI and CI, thereby avoiding misdetecting the CFI at the receiving end, and Technical effects such as low system overhead. As an alternative manner, when the DCI schedules the PDSCH of the current component carrier CO, the DCI does not include the 3-bit indication signaling; and when the DCI indicates CI, C2, C3, C4, C5, the 3 in the DCI The bit indication signaling only indicates one of the above 2) ~ 8) indication information. Of course, in this alternative manner, the correspondence between the eight types of the three bits and the seven types of indication information in the alternative manner is only an example, and the embodiment is not limited thereto, and the foregoing seven types of indication information may be Any seven of the eight values of the above three bits correspond in any order. In this way, in the case that the indicated component carrier is not the current component carrier, that is, the PDCCH and the PDSCH are not transmitted on the same component carrier, the sender can also indicate all possible combinations of CFI and CI, thereby achieving avoidance at the receiving end. Technical effects such as wrong detection of CFI and low system overhead. Embodiment 6 When configuring a PDCCH on a current component carrier CO to indicate a PDSCH of 7 component carriers (for example, component carriers C0, Cl, C2, C3, C4, C5, and C6), the above 3-bit values 000 to 111 The following 4 instructions can be indicated separately:

1) The above 3-bit ear value is 000, used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier CO, and the mode of the CO acquisition control format indication value is the PCFICH of the component carrier CO; The above-mentioned 3-bit value 001 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C1, and the CFI value of the component carrier C1 may be obtained in a predefined manner or indicated by high-layer signaling;

3) 010 is the default value; 4) The value of the above 3-bit 011 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C6, and the CFI value of the component carrier C6 can be obtained in a predefined manner or through higher layer signaling. Instruction

The above-mentioned 3-bit ear value 101 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C5, and the CFI value of the component carrier C5 may be obtained by a predefined manner or indicated by high layer signaling;

The above-mentioned 3-bit ear value is 110, which is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C4, and the CFI value of the component carrier C4 may be obtained by a predefined manner or indicated by high layer signaling;

The above-mentioned 3-bit value 111 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C3, and the CFI value of the component carrier C3 can be obtained in a predefined manner or indicated by high-layer signaling. The correspondence between the eight types of the three bits and the seven types of indication information is only an example. The present embodiment is not limited thereto, and the seven types of indication information may be any seven of the eight types of the three bits. In any order - corresponding. In this way, with the solution in this embodiment, in the case that the PDCCH can be configured to indicate the PDSCH of the 7 component carriers, the sender can indicate all possible combinations of CFI and CI, thereby avoiding misdetecting the CFI at the receiving end, and Technical effects such as low system overhead. As an alternative, when the DCI schedules the PDSCH of the current component carrier CO,

The DCI does not contain the 3-bit indication signaling; and when the DCI indicates CI, C2, C3, C4, C5,

At C6, the 3-bit indication signaling in the DCI indicates only one of the above 2), 4) to 8) indication information. Of course, in this alternative mode, the above three bits of the eight values and alternatives The correspondence between the six types of indication information is only an example. The present embodiment is not limited thereto, and the six types of indication information may correspond to any six of the eight types of the three bits in any order. In this way, in the case that the indicated component carrier is not the current component carrier, that is, the PDCCH and the PDSCH are not transmitted on the same component carrier, the sender can also indicate all possible combinations of CFI and CI, thereby achieving avoidance at the receiving end. Technical effects such as wrong detection of CFI and low system overhead. Embodiment Ί When configuring a PDCCH on a current component carrier to indicate a PDSCH of 8 component carriers (for example, component carriers C0, Cl, C2, C3, C4, C5, C6, and C7), the above 3-bit ear has a value of 000 ~111 can indicate the following instructions:

2) The value of the above 3-bit 001 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C1, and the CFI value of the component carrier C1 may be obtained in a predefined manner or indicated by high layer signaling;

The above-mentioned 3-bit value 010 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C7, and the CFI value of the component carrier C7 may be obtained in a predefined manner or indicated by high-layer signaling;

The above-mentioned 3-bit value 011 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C6, and the CFI value of the component carrier C6 may be obtained in a predefined manner or indicated by high-layer signaling;

The above-mentioned 3-bit ear value 101 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C5, and the CFI value of the component carrier C5 may be obtained in a predefined manner or indicated by high layer signaling;

The above-mentioned 3-bit value 110 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C4, and the CFI value of the component carrier C4 may be obtained in a predefined manner or indicated by high-layer signaling; 8) The value of the 3-bit value 111 is used to indicate that the PDSCH corresponding to the PDCCH is transmitted on the component carrier C3, and the CFI value of the component carrier C3 may be obtained in a predefined manner or indicated by high-layer signaling. The corresponding relationship between the eight types of the three bits and the foregoing first to eighth indication signaling is only an example, and the embodiment is not limited thereto. The eight types of indication signaling may be compared with the eight types of the above three bits. In any order - corresponding. In this way, with the solution in this embodiment, in the case that the PDCCH can be configured to indicate the PDSCH of the eight component carriers, the sender can indicate all possible combinations of CFI and CI, thereby avoiding misdetecting the CFI at the receiving end, and Technical effects such as low system overhead. As an alternative, when the DCI schedules the PDSCH of the current component carrier CO, the

The DCI does not include the 3-bit indication signaling. When the DCI indicates Cl, C2, C3, C4, C5, C6, C7, the 3-bit indication signaling in the DCI only indicates the above 2) ~ 8) indication. One of the information. Of course, the correspondence between the eight types of the three bits and the seven types of indication information in the alternative manner is only an example. The present embodiment is not limited thereto, and the foregoing seven types of indication information may be compared with the eight types of the above three bits. Any of the 7 in any order - corresponding. In this way, in the case that the indicated component carrier is not the current component carrier, that is, the PDCCH and the PDSCH are not transmitted on the same component carrier, the sender can also indicate all possible combinations of CFI and CI, thereby achieving avoidance at the receiving end. Technical effects such as wrong detection of CFI and low system overhead. In the foregoing Embodiments 1-7, the predefined manner for the UE to acquire the CFI may be one of the following methods:

1) The indicated control format indication value is equal to the control format indication value of the current component carrier, that is, the CFI value of the component carrier where the PDSCH is located is the same as the CFI value of the component carrier where the PDCCH is located; or

2) The CFI value is a fixed value of n. Preferably, n=3. Or preferably, when the indicated component carrier is not the current component carrier, when the downlink system bandwidth is less than or equal to 10 PRBs, the fixed value is n=4, and when the downlink system bandwidth is greater than 10 PRBs. , the fixed value n=3. As a preferred mode, in the above embodiments 1-7, the first indication value a0=l, the second indication value a1=2, and the third indication value a2=3. Or preferably, when the downlink system bandwidth is less than or equal to 10 PRBs, the first indication value a0=2, the second indication value a=3, and the third indication value A2=4, when the downlink system bandwidth is greater than 10 PRBs, the first indication value a0=1, the second indication value a=2, and the third indication value a2=3. In another preferred mode, when the indicated component carrier does not have a control domain configured, that is, when there is no PDCCH, PHICH and PCFICH, the first indication value a0, the second indication value a1, the third The indicated value a2 is any three of 0, 1, 2, 3. Specifically, the terminal UE 32 receives the DCI from the base station, where the DCI includes the 3 bits as the indication signaling in the foregoing Embodiments 1-7. Then, the control format indication value indicated by the indication signaling in the DCI is obtained, or the control format indication value is obtained according to one of the foregoing high layer signaling indication or a predefined manner. Here, the use of 3 bits as the indication signaling is only an example of the present embodiment, and the above indication signaling may also be represented by 4 bits or more. Specifically, the correspondence between the value of the above 3-bit and the corresponding indication signaling may be defined in advance on the sender (such as the base station 31) and the receiver (such as the terminal UE 32). In this way, the sender can send the DCI as needed, where the above 3 bits in the DCI are specific values. Then, after receiving the DCI, the receiver extracts the foregoing 3 bits, and then finds a corresponding indication message according to the predefined correspondence, so as to obtain corresponding CFI and CL according to the indication message, and the PDCCH may include multiple a DCI, wherein each of the plurality of DCIs may include one of the indication signalings mentioned in the above embodiments for indicating one component carrier CI, and the control format of the component carrier indicates a value of CFI . That is, the DCI in the PDCCH is not all used to indicate CFI and CI. The different component carriers are indicated by different DCIs, and the purpose that the PDCCH can indicate multiple component carriers is achieved. The CO, CI, C2, C3, C4, C5, C6, and C7 in the above embodiments are different component carriers. Further, after the UE obtains the predefined CFI value, the control region corresponding to the CFI value on each component carrier does not resolve the PDSCH, and the physical downlink shared channel start OFDM symbol position is in the first OFDM symbol of the corresponding data region. In the above embodiment, the CFI value obtained by the indication signaling or the high layer signaling or the predefined manner configured in the DCI indicates the initial OFDM symbol number when the PDSCH is mapped to the physical resource in the subframe, or the CFI value indicates The number of OFDM symbols used as a transmission PDCCH in a subframe. That is, the PDSCH on the transmitting side and the receiving side are not mapped or demodulated in the control region corresponding to the CFI value, but are mapped or demodulated in the corresponding data region. In the foregoing embodiment, when the control domain is not configured on the indicated component carrier, the component carrier obtains a CFI value by using indication signaling or high-layer signaling or a predefined manner configured in the DCI, where the CFI value indicates that the PDSCH is in the subframe. The starting OFDM symbol number when mapped to a physical resource. By combining this predefined approach, the sender (e.g., base station 31) can indicate all possible combinations of CFI and CI, and save overhead, optimizing the system. In addition, Table 1 above can also be used to represent the above specific examples 1 to 7: Table 1

In addition, in order to reduce the interference of the adjacent interval, in the extended component carrier, there is no control region (no PDCCH, PCFICH, PHICH), and the PDSCH can also be transmitted at a predefined starting OFDM symbol position instead of the fixed slave subframe. First in

Sending on the OFDM symbol, directly indicating by the indication signaling in the DCI or the CFI value indicated by the manner of obtaining the CFI value (including: predefined manner or indicated by the high layer signaling) indicates that the transmitted PDSCH is in the sub- The starting OFDM symbol number when mapping to a physical resource in a frame (this number is the number of the OFDM symbol in the subframe, numbered from 0). That is, the CFI value corresponds to a virtual control region, and the PDSCH on the transmitting side and the receiving side are not mapped or demodulated in the control region corresponding to the CFI value, but are mapped or demodulated in the corresponding data region. At this time, the ears of a0, al, a2 are again any three values of 0, 1, 2, 3. The virtual control region is the first n OFDM symbols in the subframe, and the n value is a CFI value. FIG. 5 is a schematic diagram of a transmission system for controlling a format indication value according to an embodiment of the present invention. As shown in FIG. 5, the transmission system of the control format indication value may include: a configuration module 51, configured to configure indication signaling in a downlink control information DCI of a physical downlink control channel PDCCH on a current component carrier, where the indication signaling is used And indicating the component carrier, and indicating the control format indication value of the component carrier or the manner of obtaining the control format indication value, where the indicated component carrier is used for transmission of the physical downlink shared channel PDSCH corresponding to the PDCCH; It is used to send the above DCI to the terminal UE. Preferably, the indication signaling is 3 bits. Here, the configuration module 51 and the sending module 52 are used as the transmitting entity 500 in the transmission system. In this embodiment, the sending entity 500 can be integrated in the base station 31 shown in FIG. In addition, the transmission system for controlling the format indication value may further include: a receiving module 53, configured to receive the DCI from the sending module, and an obtaining module 54, configured to acquire the foregoing control format indication value indicated by the indication signaling in the DCI. Or obtaining the foregoing control format indication value according to the acquisition manner indicated by the indication signaling. The foregoing obtaining manner includes a predefined manner and is indicated by high layer signaling. This predefined way can include one of the following:

1) The CFI value of the component carrier where the PDSCH is located is the same as the CFI value of the component carrier where the PDCCH is located;

2) The above control format indication value is a fixed value n. Here, the receiving module 53 and the obtaining module 54 function as receiving entities 600 in the transmission system. In this embodiment, the receiving entity 600 can be integrated in the terminal UE 32 shown in FIG. Specifically, three bits are used in the DCI as the foregoing indication signaling, and the corresponding relationship between the value of the three bits and the indication signaling may be adopted in the corresponding manner in the embodiments 1-7, and is not further described herein. The indication signaling in this embodiment may also be 4 bits, or more bits. Preferably, in the above various embodiments, the solution PCFICH can be understood as acquiring data on the PCFICH. With the present invention, before transmitting the CFI, a predetermined bit is used as the indication signaling in the DCI to indicate a component carrier for transmitting the PDSCH, and a CFI value of the component carrier or a manner of obtaining a CFI value of the component carrier. In this way, the problem that the combination of all possible CFIs and CIs cannot be completely indicated is solved, and the technical effects of avoiding CFI misdetection and less overhead are achieved. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claims A method of transmitting control order indication values, including:

Configuring instruction signaling in the downlink control information DCI of the physical downlink control channel PDCCH on the current component carrier, where the indication signaling is used to indicate a component carrier, and indicating a control format indication value of the component carrier or acquiring the control format a manner of indicating a value, where the indicated component carrier is used for transmission of a physical downlink shared channel PDSCH corresponding to the PDCCH;

Transmitting the DCL to the terminal UE according to claim 1, the component carrier indicated by the indication signaling includes: a first component quantity carrier and a second component quantity carrier, where the first component quantity carrier Different from the second component quantity carrier, and the first component quantity carrier and the second component quantity carrier do not include the current component carrier, and the control format indication value of the first component quantity carrier is indicated by the indication letter The indication, and/or manner of obtaining the control indication value of the second component amount carrier is indicated by the indication signaling. The transmission method according to claim 2, wherein the component carrier indicated by the indication signaling further comprises: a current component carrier, wherein the current component carrier is indicated by the indication signaling. According to the transmission method of claim 2, the control format indication value of the second component quantity carrier is obtained by: using a predefined manner or indicating the control format of the second component quantity carrier by using high layer signaling Indicates the value. The method according to claim 3, wherein the obtaining the control indication value of the current component carrier comprises: acquiring, by using a physical downlink control format indication channel PCFICH of the current component carrier, a control indication value of the current component carrier. The transmission method according to claim 1, wherein the indicated component carrier comprises the following four component carriers: the current component carrier C0, the first component carrier C1, the second component carrier C2, and the third component carrier C3. The eight states of the indication signaling respectively indicate the first indication information to the eighth indication information; or

The indicated component carrier includes: the first component carrier C1, the second component carrier C2, and the third component carrier C3, and does not include the current component carrier C0, Any one of the eight states of the indication signaling respectively indicates the second indication information to the eighth indication information;

The first indication information is used to indicate that the component carrier is the CO, and the manner in which the CO obtains the control format indication value is a physical downlink control format indication channel (PCFICH) for deciphering the CO;

The second indication information is used to indicate that the component carrier is the Cl, and indicates that the control format indication value of the C1 is the first indication value a0;

a third indication information, configured to indicate that the component carrier is the C1, and indicate that the control format indication value of the C1 is a second indication value al;

The fourth indication information is used to indicate that the component carrier is the C1, and that the control format indication value of the C1 is a third indication value a2;

The fifth indication information is used to indicate that the component carrier is the C2, and indicates that the control format indication value of the C2 is the first indication value a0;

The sixth indication information is used to indicate that the component carrier is the C2, and that the control format indication value of the C2 is the second indication value al;

The seventh indication information is used to indicate that the component carrier is the C2, and that the control format indication value of the C2 is the third indication value a2;

The eighth indication information is used to indicate that the component carrier is the C3, and indicates that the manner of acquiring the control format indication value is a predefined manner or is indicated by a high layer signaling.

7. The transmission method according to claim 1, wherein

The indicated component carrier includes the following five component carriers: the current component carrier CO, the first component carrier C1, the second component carrier C2, the third component carrier C3, and the fourth component carrier C4, where the indication signaling Any of the 8 states respectively indicating the first indication information to the seventh indication information; or

The indicated component carrier includes: a first component carrier C1, a second component carrier C2, a third component carrier C3, and a fourth component carrier C4, and does not include the current component carrier CO, and the indication signaling is 8 Any of the six states respectively indicating the second indication information to the seventh indication information; The first indication information is used to indicate that the component carrier is the CO, and the manner in which the CO obtains the control format indication value is a physical downlink control format indication channel PCFICH for deciphering the CO;

a third indication information, configured to indicate that the component carrier is the Cl, and indicate that the control format indication value of the C1 is a second indication value al;

The fifth indication information is used to indicate that the component carrier is the C2, and indicates that the manner of acquiring the control format indication value is a predefined manner or is indicated by a high layer signaling;

The sixth indication information is used to indicate that the component carrier is the C3, and indicates that the manner of acquiring the control format indication value is the predefined manner or is indicated by a high layer signaling; and the seventh indication information is used to indicate The component carrier is the C4, and indicates that the manner of acquiring the control format indication value is the predefined manner or is indicated by high layer signaling.

8. The transmission method according to claim 1, wherein the indicated component carrier comprises the following six component carriers: the current component carrier C0, the first component carrier C1, the second component carrier C2, the third component carrier C3, The fourth component carrier C4 and the fifth component carrier C5, the eight states of the indication signaling respectively represent the first indication information to the eighth indication information; or

The indicated component carrier includes: the first component carrier C1, the second component carrier C2, the third component carrier C3, the fourth component carrier C4, and the fifth component carrier C5, without Including the current component carrier CO, any of the eight states of the indication signaling respectively represent the second indication information to the eighth indication information;

The first indication information is used to indicate that the component carrier is the CO, and the manner in which the CO code takes the control format indication value is a physical downlink control format indication channel PCFICH for deciphering the CO;

The second indication information is used to indicate that the component carrier is the Cl, and indicates that the control format indication value of the C1 is the first indication value a0; a third indication information, configured to indicate that the component carrier is the C1, and indicate that the control format indication value of the C1 is a second indication value a1;

The sixth indication information is used to indicate that the component carrier is the C3, and indicates that the manner of acquiring the control format indication value is the predefined manner or is indicated by a high layer signaling; and the seventh indication information is used to indicate The component carrier is the C4, and indicates that the manner of acquiring the control format indication value is the predefined manner or is indicated by the high layer signaling; the eighth indication information is used to indicate that the component carrier is the C5 And indicating that the manner of obtaining the control format indication value is in the predefined manner or indicated by high layer signaling.

9. The transmission method according to claim 1, wherein the indicated component carrier comprises the following seven component carriers: the current component carrier C0, the first component carrier C1, the second component carrier C2, the third component carrier C3, a fourth component carrier C4, a fifth component carrier C5, and a sixth component carrier C6, wherein any one of the eight states of the indication signaling respectively indicates the first indication information to the seventh indication information; or

The indicated component carrier includes: the first component carrier C1, the second component carrier C2, the third component carrier C3, the fourth component carrier C4, the fifth component carrier C5, and the a sixth component carrier C6, which does not include the current component carrier C0, and any six of the eight states of the indication signaling respectively represent the second indication information to the seventh indication information;

The second indication information is used to indicate that the component carrier is the C1, and indicates that the manner of acquiring the control format indication value is a predefined manner or is indicated by a high layer signaling;

The third indication information is used to indicate that the component carrier is the C2, and indicates that the manner of obtaining the control format indication value is the predefined manner or is indicated by a high layer signaling; The fourth indication information is used to indicate that the component carrier is the C3, and indicates that the manner of acquiring the control format indication value is the predefined manner or is indicated by a high layer signaling; and the fifth indication information is used to indicate The component carrier is the C4, and the manner of obtaining the control format indication value is the predefined manner or indicated by the high layer signaling; the sixth indication information is used to indicate that the component carrier is the C5 And indicating that the control format indication value is obtained in the predefined manner or by using the high layer signaling, and the seventh indication information is used to indicate that the component carrier is the C6, and indicating that the control format is obtained. The manner of indicating the value is in the predefined manner or indicated by higher layer signaling.

10. The transmission method according to claim 1, wherein the indicated component carrier comprises the following eight component carriers: the current component carrier C0, the first component carrier C1, the second component carrier C2, the third component carrier C3, a fourth component carrier C4, a fifth component carrier C5, a sixth component carrier C6, and a seventh component carrier C7, wherein the eight states of the indication signaling respectively represent the first indication information to the eighth indication information; or the indication The component carrier includes: the first component carrier C1, the second component carrier C2, the third component carrier C3, the fourth component carrier C4, the fifth component carrier C5, and the sixth component carrier C6 and the seventh component carrier C7, and not including the current component carrier CO, any of the eight states of the indication signaling respectively indicating the second indication information to the eighth indication information;

The third indication information is used to indicate that the component carrier is the C2, and indicates that the manner of acquiring the control format indication value is the predefined manner or is indicated by a high layer signaling; the fourth indication information is used to indicate The component carrier is the C3, and the manner of obtaining the control format indication value is the predefined manner or indicated by the high layer signaling; the fifth indication information is used to indicate that the component carrier is the C4 And indicating that the manner of obtaining the control format indication value is in the predefined manner or indicated by high layer signaling; The sixth indication information is used to indicate that the component carrier is the C5, and the manner of obtaining the control format indication value is the predefined manner or indicated by the high layer signaling; the seventh indication information is used to indicate The component carrier is the C6, and the manner of obtaining the control format indication value is the predefined manner or indicated by the high layer signaling; the eighth indication information is used to indicate that the component carrier is the C7 And indicating that the manner of obtaining the control format indication value is in the predefined manner or indicated by high layer signaling.

The transmission method according to any one of claims 1 to 10, wherein the PDSCH is mapped to the physical resource in the subframe by the CFI value obtained by the indication signaling or the high layer signaling or the predefined manner configured in the DCI. The starting OFDM symbol number of the time, or the CFI value indicates the number of OFDM symbols used as a transmission PDCCH in the subframe.

The transmission method according to any one of claims 1 to 10, when the control domain is not configured on the indicated component carrier, the component carrier passes the indication signaling or the high layer signaling or pre-configured in the DCI. The defined mode acquires a CFI value, which indicates a starting OFDM symbol number when the PDSCH is mapped to a physical resource in a subframe.

The transmission method according to any one of claims 6 to 8, wherein the first indication value a0=l, the second indication value a=2, the third indication value a2=3, or When the downlink system bandwidth is less than or equal to 10 physical resource blocks PRB, the first indication value a0=2, the second indication value a=3, the third indication value a2=4, and the downlink system bandwidth is greater than 10 In the case of PRBs, the first indication value a0=l, the second indication value a=2, and the third indication value a2=3.

The transmission method according to any one of claims 6 to 8, when the control domain is not configured on the component carrier transmitting the PDSCH, the first indication value a0, the second indication value a1, The third indication value a2 is any three values of 0, 1, 2, and 3.

The transmission method according to any one of claims 4 to 10, wherein the predefined manner comprises one of the following:

The control format indication value is equal to a control format indication value of the current component carrier; or the control format indication value is a fixed value n.

The transmission method according to claim 15, wherein the fixed value is n=3, or when the downlink system bandwidth is less than or equal to 10 PRBs, the fixed value is n=4, and when the downlink system bandwidth is greater than 10 PRBs. , the fixed value n=3.

The transmission method according to any one of claims 1 to 10, wherein the indication signaling is 3 bits.

18. A transmission system for controlling the format indication value, comprising:

a configuration module, configured to configure indication signaling in a downlink control information DCI of a physical downlink control channel PDCCH on a current component carrier, where the indication signaling is used to indicate a component carrier, and indicate a control format indication value of the component carrier or Obtaining the control format indication value, where the indicated component carrier is used for transmission of a physical downlink shared channel PDSCH corresponding to the PDCCH;

And a sending module, configured to send the DCI to the terminal UE.

19. The transmission system of claim 18, further comprising:

a receiving module, configured to receive the DCI from the sending module, and an acquiring module, configured to acquire the control format indication value indicated by the indication signaling in the DCI, or according to the indication indicated by the indication signaling The control format indication value is obtained in one of the following ways:

Instructing the control format indication value by high layer signaling; or