WO2012152036A1 - 指示控制信道的方法及装置 - Google Patents
指示控制信道的方法及装置 Download PDFInfo
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- WO2012152036A1 WO2012152036A1 PCT/CN2011/084697 CN2011084697W WO2012152036A1 WO 2012152036 A1 WO2012152036 A1 WO 2012152036A1 CN 2011084697 W CN2011084697 W CN 2011084697W WO 2012152036 A1 WO2012152036 A1 WO 2012152036A1
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- indication information
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- control channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0042—Intra-user or intra-terminal allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Definitions
- the present invention relates to the field of communications, and in particular to a method and apparatus for indicating a control channel.
- BACKGROUND There are two frame structures in a Long Term Evolution (LTE) system, and a frame structure type (Type)
- Frequency Division Duplex Frequency Division Duplex
- Frequency Division Half Duplex Each radio frame is 10ms long and consists of 20 slots, each slot is 0.5ms, numbered from 0 to 19. Wherein, one subframe consists of two consecutive time slots, for example, subframe i consists of two consecutive time slots 2i and 2i+1. Whether it is half-duplex FDD or full-duplex FDD, both uplink and downlink are transmitted on different frequencies, but for half-duplex FDD, UE cannot transmit and receive data at the same time; for full-duplex FDD, there is no such limitation. There may be 10 downlink and 10 uplink subframes per 10 ms interval. Frame Structure Type 2 is suitable for Time Division Duplex (TDD).
- TDD Time Division Duplex
- a radio frame is 10ms long and consists of two half-frames of length 5ms.
- One field consists of five sub-frames of length 1ms.
- the supported uplink and downlink configurations are shown in Table 1.
- “D” indicates that the subframe is a downlink subframe
- "U” indicates that the subframe is an uplink subframe
- "S” indicates that the subframe is a special subframe.
- the special subframe consists of a downlink special subframe (DwPTS), a guard interval (GP), and an uplink special subframe (UpPTS), and the total length is lms.
- Each subframe i consists of two time slots 2i and 2i+1 that are 0.5 ms (15360 X Ts) in length.
- the frame structure Type 2 supports two downlink-uplink conversion periods of 5ms and 10ms. In the 5ms uplink and downlink conversion cycle, both fields have special subframes. In the 10ms uplink and downlink conversion cycle, only the first half has a special subframe. Subframes 0, 5 and DwPTS are typically reserved for downstream transmission. The UpPTS and the next subframe immediately following the special subframe are always reserved for uplink transmission. Therefore, for the uplink and downlink conversion period of 5 ms, UpPTS, subframe 2, and subframe 7 are reserved for uplink transmission; for the uplink and downlink conversion period of 10 ms, UpPTS and subframe 2 are reserved for uplink transmission.
- PCFICH Physical Control Format Indicator Channel
- PHICH Physical Hybrid Automatic Retransmission Request Indicator Channel
- PDCCH Physical Downlink Control Channel
- OFDM Orthogonal Frequency Division Multiplexing
- the PHICH is used to carry acknowledgement/negative acknowledgement (ACK/NACK) feedback information for 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.
- PBCH Physical Broadcast Channel
- the PDCCH is used to carry downlink control information (Downlink Control Information, DCI), and includes: scheduling information of a Physical Uplink Shared Channel (PUSCH), scheduling information of a Physical Downlink Shared Channel (PDSCH), and uplink. Power control information.
- DCI Downlink Control Information
- PUSCH Physical Uplink Shared Channel
- PDSCH Physical Downlink Shared Channel
- Power control information For the FDD, when the UE detects the PDCCH channel of the scheduling information of the PUSCH that belongs to the UE in the subframe n, or the UE receives the PHICH corresponding to the PUSCH of the UE in the subframe n, the UE will be in the subframe according to the situation.
- the data of the PUSCH is transmitted on n+4.
- the UE when the UE detects the PDCCH channel carrying the PUSCH scheduling information belonging to the UE in the subframe n, or the UE receives the PHICH corresponding to the PUSCH of the UE in the subframe n. According to the situation, the UE will transmit the data of the PUSCH on the subframe n+k.
- Table 2 Table 2 TDD configuration 0-6 corresponding k value schematic table
- a Common Reference Signal (CRS) is designed.
- the user equipment User Equipment, UE
- the user equipment can perform channel measurement through the CRS, thereby supporting the UE to perform cell reselection and handover to the target cell, and performing channel quality measurement in the UE connection state.
- the interference level is high, the physical layer can be disconnected through high-level related radio link connection failure signaling.
- CSI-RS channel information reference signal
- DMRS demodulation reference signal
- the CSI-RS is used for channel measurement, and the Precoding Matrix Indicator (PMI) and channel quality information indication (Channel Quality) that the UE needs to feed back to the base station e B can be calculated by measuring the CSI-RS.
- PMI Precoding Matrix Indicator
- CQI channel quality information indication
- RI Rank Indicator
- the DMRS is used for demodulation of the downlink shared channel.
- the DMRS demodulation can reduce the interference between different receiving sides and different cells by using the beam method, and can reduce the performance degradation caused by the codebook granularity, and reduce the downlink to a certain extent.
- Control signaling overhead In LTE R8, R9, and R10, the physical downlink control channel is mainly distributed in the first 1, 2, or 3 OFDM of one subframe, and the specific distribution needs to be configured according to different subframe types and the number of ports of the CRS, as shown in Table 3. Show. Table 3 Physical downlink control channel distribution
- Subframe 1 and subframe 6 1, 2 2 in subframe type 2 support MBSFN on the carrier of PDSCH (multiple 1, 2 2
- Subframe configured as 1
- Subframes on the PDSCH transmission carrier are not supported. 0 0
- Non-MBSFN subframes configured as PRS (except 1, 2, 3 2, 3
- Subframe of frame structure type 2 6
- each receiving side needs to perform blind detection according to the first three symbols received, and the starting position of the blind detection and the number of elements of the control channel are related to the wireless network temporary identification and different control information allocated to the receiving side.
- the control information can be generally divided into public control information and proprietary control information.
- the public control information is generally placed in the common search space of the physical downlink control channel, and the proprietary control information can be placed in all public spaces and dedicated search spaces.
- the receiving side determines whether the current subframe has a common system message, downlink scheduling, or uplink scheduling information after the blind detection. Since the downlink control information does not have Hybrid Automatic Repeat reQuest (HARQ) feedback, it is necessary to ensure that the detected bit error rate is as low as possible.
- HARQ Hybrid Automatic Repeat reQuest
- one solution is to aggregate several continuous component carrier carriers (Component Carriers) distributed in different frequency bands by carrier aggregation (Carrier Aggregation) technology to form LTE-Advanced.
- the bandwidth that can be used, for example: 100MHz. That is, for the aggregated spectrum, it is divided into n component carrier frequencies (spectrums), and the spectrum in each component carrier frequency (spectrum) is continuous.
- the spectrum is divided into two types of primary classification carrier (PCC) and secondary component carrier (SCC), also referred to as primary cell and secondary cell.
- PCC primary classification carrier
- SCC secondary component carrier
- the interference problem of the macro base station (Macro eNodeB) to the micro base station (Pico) and the interference of the home eNodeB to the macro base station (Macro eNodeB) are considered.
- the problem is to solve the problem of mutual interference between different types of base stations by using the resource quiet method.
- the specific resource silence method can be divided into a subframe-based muting method, for example: Almost Blank Subframe (ABS)
- the method can also be a resource-based element, such as: CRS silent method.
- the above method not only increases the waste of resources, but also imposes a great limitation on scheduling.
- the Macro eNodeB configures more ABS, which will It has a big impact on the Macro eNodeB, and increases the scheduling delay while increasing the waste of resources. Moreover, it cannot solve the interference problem of CRS resources and data resources, and the party for the silent CRS. The law also cannot resolve the interference between data resources. In addition, the backward compatibility of the above methods is not good, and more standardization efforts may be required while increasing the access delay. In the LTE R11 phase, it is considered to introduce more transmit data on the PDSCH region of the user. The capacity of up to 4 OFDM symbols currently configured may not be sufficient to meet the needs.
- Control channel area or resources that need to open up new transmission control information on PDSCH resources.
- the transmission mode of the control information on the new resource is not determined, and the transmission mode of the old version of the control information cannot guarantee the accuracy of the transmission of the control information on the new resource.
- the method for transmitting control information on a new resource in the related art is not determined, and the transmission mode of the control information of the old version cannot ensure the accuracy of transmission of control information on the new resource.
- a primary object of the present invention is to provide a method and apparatus for indicating a control channel, so as to at least solve the above-mentioned current transmission mode of control information on a new resource, and the transmission mode of the old version of the control information is not The problem of ensuring the accuracy of the transmission of control information on new resources.
- a method for indicating a control channel including: performing channelization processing on indication information indicating a control channel, where the control channel is a newly added control channel region or a physical downlink shared channel (PDSCH) A control channel on the resource of the new transmission control information opened on the resource; the processed indication information is transmitted to the user equipment (UE).
- UE user equipment
- the method further includes: the UE receiving the indication information, and detecting the control channel according to the indication information.
- the indication information includes at least one of: a time domain location of the control channel region; a frequency domain location of the control channel region; a method type indicating the control channel region; indicating that the control channel is in the control A manner of resource allocation on a channel area; indicating a temporal mapping relationship between control signaling carried on the control channel and data scheduled by the control channel.
- the channelization process includes the following coding, modulation, layer mapping, and antenna port mapping channelization processes.
- the indication information is carried on a specified physical or logical resource.
- the indication information is carried on a specified physical or logical resource, and includes at least one of the following: the indication information is separately carried on the physical or logical resource; the indication information is added with a cyclic check code (CRC) And being carried on the physical or logical resource; the indication information and other control information jointly attach the CRC to the physical or logical resource.
- the physical or logical resource includes: a logical resource (CCE) of a physical downlink control channel (PDCCH) that transmits control information; or a resource on the PDSCH.
- the resources on the PDSCH include other OFDM symbol resources except the orthogonal frequency division multiplexing (OFDM) symbols occupied by the PDCCH.
- the indication information when the indication information is carried on the CCE, the indication information is carried on a continuous CCE, where a starting position of the indication information is one of a predefined at least one CCE number.
- the predefined CCE is an integer multiple of the number of CCEs carrying the indication information.
- the starting position of the indication information is any one of the following: at the beginning of the CCE number; at the end of the CCE number; at a designated location, where The specified position is a position calculated according to a preset algorithm.
- the receiving, by the UE, the indication information includes: when the indication information is separately carried on the physical or logical resource, the UE acquires data on the CCE, and takes out the channel from the specified location.
- the instruction information data is processed, and the indication information is obtained after decoding; when the indication information is added to the physical or logical resource by using a cyclic check code (CRC), the UE acquires data on the CCE, and Extracting the indication information data that has undergone the channelization process from the specified location, and using the information obtained by the CRC check after decoding, determining that the information passed by the verification is the indication information; the indication information and other control information are additionally
- the CRC is carried on the physical or logical resource
- the UE acquires data on the CCE, and extracts the indication information of the channelization process and the other control information data from the specified location, after decoding Determining, by using the information obtained by the CRC check, that the information passed by the verification is common information of the indication information and the control information, and obtained from the common information
- the indication information when the indication information is carried on the CCE, the indication information is carried on a continuous CCE, where the CCE number of the starting location is an integer multiple of the number of CCEs carrying the indication information. And select a location in at least one of the predefined possible locations.
- the receiving, by the UE, the indication information includes: when the indication information adds a CRC to the physical or logical resource, the UE acquires data on the CCE, and probes from at least one predefined location.
- Extracting the indication information data that has undergone the channelization process, and decoding the information obtained by using the CRC check Determining, by the UE, the information on the CCE, and the information that is determined by the verification is the indication information; when the indication information and the other control information are jointly added to the physical or logical resource, the UE acquires the data on the CCE, and Testing the information indicating the channelization process and the other control information data from the at least one predefined location, and using the information obtained by the CRC check after decoding, determining that the information passed by the verification is the indication information
- the information is shared with the control information, and the indication information is obtained from the common information.
- the bandwidth and the identity (ID) of the cell are determined.
- the mapping the data of the indication information mapped to the antenna port to the predetermined location in the PDSCH area comprises: grouping the symbols to be mapped, each group containing m3 symbols, corresponding to one group of symbols Mapping is performed by a neighboring resource unit, where the m3 is a predefined number, and an interval between the neighboring resource units that map the to-be-mapped symbol is a predefined interval.
- an apparatus for indicating a control channel including: a processing module, configured to perform channelization processing on indication information indicating a control channel, where the control channel is a newly added control channel region Or a control channel on the resource of the new transmission control information opened on the PDSCH resource; and the sending module is configured to send the processed indication information to the UE.
- the processing module is further configured to carry the indication information on a specified physical or logical resource.
- the processing module is further configured to: the indication information is carried on a physical or logical resource of at least one of the following: the indication information is separately carried on the physical or logical resource; And the indication information and other control information jointly attaching the CRC to the physical or logical resource.
- the processing module is further configured to: when the indication information is carried on the CCE, carry the indication information on a continuous CCE, where a starting position of the indication information is at least one predefined One of the CCE numbers, the predefined CCE is an integer multiple of the number of CCEs carrying the indication information.
- the processing module is further configured to: when the indication information is carried by the resource on the PDSCH, map the data of the indication information mapped to the antenna port to a predetermined location in the PDSCH area, where The predetermined location is determined according to the bandwidth of the current system and the ID of the cell.
- the processing module is further configured to group the symbols to be mapped, each group includes m3 symbols, and maps according to a group of symbols corresponding to one adjacent resource unit, where the m3 is a predefined number, and the mapping is to be mapped.
- the interval between the adjacent resource units of the symbol is a predefined interval.
- new indication information is set, and the new indication information is used to indicate the control information, and the subsequent UE may perform the control information according to the indication information. Detection, realizing the correct and convenient reception of information on new resources.
- FIG. 1 is a process flow diagram of a method for indicating a control channel according to an embodiment of the present invention
- FIG. 2 is a schematic diagram showing the position and size of frequency domain location information according to Embodiment 2 of the embodiment of the present invention
- FIG. 4A is a first flowchart of indicating that information is subjected to data processing according to an embodiment of the present invention
- FIG. 4B is a diagram according to an embodiment of the present invention
- FIG. 5 is a flowchart of a process of not including CRC indication information according to Embodiment 10 of the present invention
- FIG. 6 is a flowchart according to an embodiment of the present invention
- FIG. 7 is a flowchart showing a process of indicating information of an additional CRC according to Embodiment 11 of the present invention
- FIG. 8 is a flowchart of Embodiment 10 according to an embodiment of the present invention.
- 1 is a schematic diagram of the location of the indication information on the CCE;
- FIG. 5 is a flowchart of a process of not including CRC indication information according to Embodiment 10 of the present invention
- FIG. 6 is a flowchart according to an embodiment of the present invention
- FIG. 7 is a flowchart showing a process of indicating information of an additional CRC according to Embodiment 11 of the present invention
- FIG. 8 is a flowchart of Embodiment 10 according
- FIG. 9 is a processing flow in which the indication information and other control information are additionally attached to the CRC according to the embodiment 12 of the embodiment of the present invention
- 10 is a schematic diagram of the location of the indication information on the CCE according to the embodiment 12 of the present invention
- FIG. 11 is a mapping of the data mapped to the antenna port to the PDSCH according to the embodiment 13 of the embodiment of the present invention
- FIG. 12 is a schematic structural diagram of an apparatus for indicating a control channel according to an embodiment of the present invention.
- the embodiment of the present invention provides a method for indicating a control channel, and the processing flow thereof is as shown in FIG. 1, and includes steps S102 to S104.
- Step S102 Perform channelization processing on the indication information indicating the control channel, where the control channel involved in step S102 is a newly added control channel region or a control channel on a resource of new transmission control information opened on the PDSCH resource;
- Step S104 Send the processed indication information to the user equipment UE.
- new indication information is set, and the new indication information is used to indicate the control information, and the subsequent UE may perform the control information according to the indication information. Detection, realizing the correct and convenient reception of information on new resources.
- the UE receives the indication information, and further can detect the control channel according to the indication information. If the indication information indicates that the control channel does not exist, the UE does not need to detect the UE, thereby saving resources. If the indication information indicates that the control channel exists, the UE searches for the location of the control channel according to the indication information, and detects the target.
- the purpose of the indication information is to be set to indicate a control channel. Therefore, the indication information includes various information capable of indicating control information, for example, a time domain location of the control channel region, and, for example, a frequency domain location of the control channel region, indicating a control channel region Method type (indicating what method is used to indicate the control channel area), indicating the control channel
- the manner of resource allocation on the control channel region indicates the temporal mapping relationship between the control signaling carried on the control channel and the data it schedules, and so on.
- the indication information includes only the time domain location information of the control channel region.
- the control channel region is on the first time slot: Method 1.
- the control channel region is the first time slot from the Sth. Continuous K OFDM symbols starting from the OFDM symbol; Application 1, S, K are given by the indication information; Application 2, S is predefined, K is given by the indication information; Application 3, S is given by the indication information, K is the pre- definition.
- the control channel region is a continuous K OFDM symbols starting from the 1st OFDM symbol in the 1st slot; K is given by the indication information.
- Example 2 The control channel region is on the second time slot: Method 1, the control channel region is the consecutive K OFDM symbols starting from the Sth OFDM symbol in the second slot; Application 1, S, K are indicated by the indication information The application 2, S is predefined, K is given by the indication information; the application 3, S is given by the indication information, and K is predefined. Method 2, the control channel region is a continuous K OFDM symbols starting from the 1st OFDM symbol in the 2nd time slot;
- Example 3 The control channel region is on the first or second time slot: the time slot in which the control channel region is located is indicated by the indication information.
- the indication information includes only the frequency domain location information of the control channel region, and the frequency domain region is the sum of the k2 such sub-regions, and any one of the sub-regions herein is:
- the starting position begins with an order of m2*P2 resource blocks (RB) in an ascending order; where P2 is predetermined, k2 starting positions are predefined, and m2 is given by the indication information.
- the schematic diagram is shown in Figure 2.
- Example 2 uses the method mentioned in type O/1/2 used by the resource allocation in document 3GPP TS 36.213.
- the indication information includes frequency domain location information of the control channel region + method indication information indicating the control channel region gives an indication of the frequency domain location, and a method for indicating the frequency domain location is given.
- the base station configures multiple methods for indicating the location of the frequency domain. The UE needs to use the correct method to understand the indication of the frequency domain location given by the base station, so as to obtain information about the frequency domain location.
- the method of indicating the control channel region using the combination of 0 and 1 of the bit, explicitly tells the UE the method used to indicate the control region, for example, Table 4: Table 4
- the indication information includes frequency domain location information of a control channel region and a manner of resource allocation of a control channel on a control channel region, and the allocated frequency domain resource of a control channel on a control channel region is specifically applied. It may be continuous, it may be separated, it may be virtual distribution, or it may be interleaved with other control channel resources. Therefore, in the case of multiple configurations and not scheduled, it should be noted that the control channel is on the control channel area. The way resources are allocated.
- the indication information includes frequency domain location information of a control channel region and a manner of resource allocation of a control channel on a control channel region.
- the indication information includes the frequency domain location information of the control channel region, the method for indicating the control channel region, and the manner of the resource allocation of the control channel region on the control channel region.
- the relationship between the control signaling carried on the time and the data scheduled by the device is as follows:
- Embodiment 9 In this embodiment, the indication information includes the frequency domain location information of the control channel region + the control signaling carried on the control channel and the scheduled The temporal relationship of the data is transmitted on the nth subframe, and the data transmitted according to the control channel is sent in the n+kth frame, where k is given by the indication information.
- the indication information may be increased in order to obtain a predetermined number of bits.
- the placeholder bit should be at the end of the string and appear as 0. See Figure 3 for a schematic diagram.
- Channelization processing is performed on the indication channel in the flow shown in FIG. 1, wherein the channelization processing involved may include the following coding, modulation, layer mapping, and antenna port mapping channelization processes. Since the indication information cannot exist alone, the indication information needs to be carried on a specified physical or logical resource. The resources carrying the indication information are different, and the corresponding processing flow is also different. For example, the flow of the indication information through the data processing is as shown in FIG.
- the data including the control channel indication information is encoded, carried on the logical resource, and transmitted after other channelization processing; or as shown in FIG. 4B, The data of the control channel indication information is transmitted after being processed by channelization and being carried on the physical resource.
- the indication information is carried in a plurality of bearer formats on the specified physical or logical resource.
- the indication information may be separately carried on the physical or logical resources.
- the indication information may also be added with a loop check.
- the code CRC is carried on the physical or logical resources.
- the indication information may also be attached to the physical or logical resources together with other control information.
- the physical or logical resource may select a logical resource CCE of the physical downlink control channel PDCCH transmitting the control information or a resource on the physical downlink shared channel PDSCH.
- other resources may also be used, which can carry the indication information and send it to the UE.
- the resources on the PDSCH are OFDM symbol resources, specifically, other OFDM symbol resources except for the OFDM symbols occupied by the PDCCH. In the specific application, you can give instructions The information is carried on any OFDM symbol that can be used, and may occupy more than one OFDM symbol, for example, two, three, and the like, and may not exceed the number of OFDM symbols that can be used.
- the indication information is carried on the consecutive CCEs, where the indication information start position is one of the predefined at least one CCE number, and the predefined CCE is the number of CCEs carrying the indication information. Integer multiple.
- the starting position of the indication information may be any one of the following: at the beginning of the CCE number; at the end of the CCE number; or at a specified position, where The specified position is a position calculated according to a preset algorithm.
- the preset algorithm may select a public search space location algorithm of the PDCCH in 3GPP TS 36.213, or other location algorithm, depending on the specific situation.
- the predefined starting position of the indication information is more than one, preferably, the predefined limited number of possible CCE numbers are calculated according to a predefined algorithm, and the preset algorithm preferably selects the public search space of the PDCCH in 3GPP TS 36.213. Positional algorithms, or other location algorithms, depending on the situation.
- the manner in which the indication information is carried on the physical or logical resources is different according to the manner in which the indication information is carried on the physical or logical resources.
- the specific processing manners of the subsequent UEs are different.
- the specific situation includes the following situations: Case A: When the indication information is separately carried on physical or logical resources, The UE acquires the data on the CCE, and extracts the channelized indication information data from the specified location, and obtains the indication information after decoding. In case B, the indication information adds the CRC to the physical or logical resource, and the UE acquires the data on the CCE. And taking out the channelized instruction information data from the specified location, and decoding, and using the information obtained by the CRC check, determining that the verification passed information is indication information; Case C, the indication information, and other control information are additionally attached to the CRC.
- the UE acquires the data on the CCE, and extracts the channelized indication information and other control information data from the specified location, and uses the information obtained by the CRC check after decoding to determine that the verification passed information is
- the indication information and the control information are common information, and the indication information is obtained from the common information.
- the above situation AC is described in the case where the starting position of the predefined indication information is only one CCE number. In actual applications, the starting position of the predefined indication information may also be more than one CCE number.
- the CRC is used to verify the information to ensure the accuracy of the information.
- Case D When the CRC is attached to the physical or logical resource, the UE obtains the data on the CCE and tries to pre-define All possible indication information data subjected to channelization processing is taken out at at least one possible location, and information obtained by using the CRC check is decoded to determine that the information passed by the verification is indication information;
- the condition E, the indication information, and other control information are jointly attached to the physical or logical resource, the UE acquires the data on the CCE, and probes all possible indication information that is channelized and processed from the predefined at least one possible location.
- the information obtained by the CRC check is used to determine that the information passed by the check is the common information of the indication information and the control information, and the indication information is obtained from the common information.
- the indication information is carried on the resource on the PDSCH
- the data of the indication information mapped to the antenna port is mapped to a predetermined location in the PDSCH area, where the predetermined location is determined according to the bandwidth of the current system and the identifier ID of the cell.
- the symbols to be mapped are grouped, each group contains m3 symbols, and a group of symbols is mapped according to a neighboring resource unit, where m3 is a predefined number, and an interval between adjacent resource units mapped with symbols is predefined. .
- Scenario 1 The indication information about the UE detection control channel is carried on the logical resource CCE used by the PDCCH, and is transmitted after being channelized.
- Embodiment 10 In this example, the indication information is not attached with a CRC.
- the indication information of the UE detection control channel is not attached with a CRC, and is encoded and carried on the logical resource CCE used by the PDCCH, and is transmitted after being channelized.
- the specific processing procedure is as shown in FIG. 5, including: the control channel indication information is subjected to channel error correction coding, placed on a logical resource CCE of the PDCCH, and the data on the CCE is scrambled, modulated, layer mapped, and data on the antenna port.
- the mapping, the mapping of data on the antenna port to the physical resource is transmitted to the UE.
- the indication information start position is a predefined CCE number, the indication information is placed on consecutive CCEs, and the CCE number indicating the start position of the information is an integer multiple of the number of used CCEs.
- the starting position of the indication information may be set as follows: Method 1, the starting position of the indication information is located at the beginning of the CCE number. Method 2, the starting position of the indication information is at the end of the CCE number. In the method 3, the starting position of the indication information is calculated according to the public search space location algorithm of the PDCCH in 3GPP TS 36.213, and one of the calculated locations is predefined. For specific application, the UE obtains the data on the CCE, and extracts the encoded indication information data from the predefined location, and obtains the indication information after decoding.
- Embodiment ⁇ 1 In this example, the indication information is attached with a CRC.
- the CRC is added to the indication information of the UE detection control channel, and is encoded and carried on the logical resource CCE used by the PDCCH, and is transmitted after being channelized.
- the specific processing procedure is as shown in FIG. 7 , including: the control channel indication information is only calculated according to the control channel indication information, and is added to the control channel indication information; the channel correction coding is performed on the control channel indication information + CRC; The logical resource CCE; the data on the CCE is scrambled; and then modulated, layer mapped, mapped to data on the antenna port, mapped on the antenna port to the physical resource, and then transmitted to the UE.
- the indication information is placed on consecutive CCEs, and the CCE number indicating the start position of the information is an integer multiple of the number of used CCEs.
- the indication information start position is one of the predefined at least one CCE number.
- the schematic diagram is shown in Figure 8. In this embodiment, how to determine the location of the indication information is as follows: Method 1.
- the CRC is calculated by the indication information about the UE detecting the control channel, and the indication information about the UE detection control channel is added with CRC, and the coded bearer is added. On the logical resource CCE used by the PDCCH, it is transmitted after being channelized.
- the indication information is placed on consecutive CCEs, and the CCE number indicating the start position of the information is an integer multiple of the number of CCEs used.
- the starting position of the indication information is a predefined CCE number, and the starting position of the predefined indication information is only one CCE number, including the starting position of the indication information at the beginning of the CCE number, or the starting position of the indication information is located at the CCE number. Finally, or the starting position of the indication information is calculated according to the public search space location algorithm of the PDCCH in 3GPP TS 36.213, and one of the calculated locations is predefined.
- Method 2 Calculate the CRC by using the indication information about the UE to detect the control channel, add the CRC to the indication information about the UE detection control channel, encode it, and then carry it on the logical resource CCE used by the PDCCH, and then transmit it after channelization processing.
- the indication information is placed on consecutive CCEs, and the CCE number indicating the start position of the information is an integer multiple of the number of CCEs used.
- the indication information start position is one of the predefined at least one CCE position, and the predefined indication information start position is more than one CCE number, and the UE does not predetermine which specific location the base station uses, and the predefined indication information starts.
- the location is calculated according to the public search space location algorithm of the PDCCH in 3GPP TS 36.213.
- the UE obtains the data on the CCE, and sequentially extracts the encoded indication information data from the possible positions, and uses the CRC check indication information data after decoding, and verifies the indication information data as the target indication information. data.
- Embodiment 12 In this example, the indication information and the other control information are jointly added with a CRC.
- the indication information about the UE detection control channel is added with the CRC together with other control information, and is encoded and carried on the logical resource CCE used by the PDCCH, and is channelized. It is emitted after processing.
- the specific processing procedure is as shown in FIG.
- Method 1 Calculate the CRC by using the indication information about the UE detection control channel and other control information, and the indication about the UE detecting the control channel
- the information and other control information are appended with a CRC, which is encoded and carried on the logical resource CCE used by the PDCCH, and is transmitted after being channelized.
- the indication information is placed on consecutive CCEs, and the CCE number indicating the start position of the information is an integer multiple of the number of CCEs used.
- the starting position of the indication information is a predefined CCE number, and the starting position of the predefined indication information is only one CCE number, including the starting position of the indication information at the beginning of the CCE number, or the starting position of the indication information is located at the CCE number.
- the starting position of the indication information is calculated according to the public search space location algorithm of the PDCCH in 3GPP TS 36.213, and one of the calculated locations is predefined.
- Method 2 Calculated by the indication information about the UE detecting the control channel and other control information
- the indication information is placed on consecutive CCEs, and the CCE number indicating the start position of the information is an integer multiple of the number of CCEs used.
- the indication information starting position is one of the predefined at least one CCE position, and the predefined indication information starting position is more than one CCE number, and the UE does not predetermine which specific location the base station uses, and the predefined starting position is according to The public search space location algorithm calculation of the PDCCH in 3GPP TS 36.213.
- the UE obtains the data on the CCE, and sequentially extracts the data about the encoded indication information and other control information from the possible positions, and uses the CRC check indication information to jointly use the data with other control information after decoding.
- the passed data is used to share the target indication information with other control information, and the indication information of the control channel is obtained from the common data.
- Scenario 2 Resources that carry indication information about the UE detection control channel on the PDSCH (removed
- the remaining OFDM symbol resources, other than the OFDM symbols occupied by the PDCCH, are transmitted after being channelized.
- Embodiment 13 The resource indicated by the indication information on the PDSCH in this example is the resource that is carried on the PDSCH by the indication information about the UE detection control channel, and is transmitted after being channelized.
- the data mapped to the antenna port is mapped to a predetermined location in the PDSCH region. This predetermined location should be related to the bandwidth of the system, the cell ID.
- the specific mapping method of mapping the data mapped to the antenna port to the predetermined location in the PDSCH region is as follows: The resource carrying the indication information about the UE detection control channel on the PDSCH is channelized and transmitted.
- the data mapped to the antenna port is mapped to a predetermined location in the PDSCH region.
- This predetermined location should be related to the bandwidth of the system, the cell ID.
- the neighboring resource allocation unit contain m3 symbols (meaning that the m3 symbols need to be placed on adjacent resources, cannot be separated or separated too much, that is, the predetermined interval), and denoted as P (the unit of the symbol to be mapped); adjacent resource units (Resource units, the mappable resources provided in one unit are contiguous), denoted as Q, can provide mapping for m3 symbols.
- the symbols to be mapped on the antenna port are n 3 Ps, and the resources available for mapping on the PDSCH are n4 Qs, where n4 ⁇ n3, then n3 Ps should be mapped at equal intervals on n4 Qs. Where m3 is predefined.
- the mapped resource map is shown in Figure 11.
- Embodiment 14 The resource carried on the PDSCH by the indication information about the UE detection control channel is transmitted after being channelized.
- the control channel indication information is 2 bits, and the channel coding is performed using the (3, 2) block code, and then repeated k times to obtain the encoded indication information data.
- the value of k depends on the relevant agreement involved or other circumstances, Preferably, the value range of k is set to an integer of 10-20.
- the upper limit of k may be 30, 40, 50, 60 or even more, and the lower limit may also be less than 10.
- An integer such as any value from 0-9.
- Embodiment 15 The resource that is carried on the PDSCH by the indication information about the UE detection control channel is transmitted after being channelized.
- the control channel indication information is 3 bits, and the channel coding is performed using the (4, 3) block code, and then repeated k times to obtain the encoded indication information data.
- the value of k ranges from 10-20 to an integer.
- an embodiment of the present invention further provides an apparatus for indicating a control channel, and a schematic structural diagram thereof is shown in FIG.
- a processing module 1201 configured to perform channelization processing on indication information indicating a control channel, where The control channel is a newly added control channel region or a control channel on a resource of new transmission control information opened on the physical downlink shared channel PDSCH resource; the sending module 1202 is connected to the processing module 1201 and configured to set the processed indication The information is sent to the user equipment UE.
- the processing module 1201 may be further configured to carry the indication information on the specified physical or logical resource.
- the processing module 1201 is further configured to indicate that the information is carried on a physical or logical resource of at least one of the following: the indication information is separately carried on the physical or logical resource; the indication information is added with a cyclic check code CRC.
- the processing module 1201 is further configured to: when the indication information is carried on the CCE, carry the indication information on the consecutive CCEs, where the starting position of the indication information is a predefined at least one CCE number. One of the predefined CCEs is an integer multiple of the number of CCEs carrying the indication information.
- the processing module 1201 may further be configured to: when the information indicating that the information is carried on the PDSCH, map the data of the indication information mapped to the antenna port to a predetermined location in the PDSCH region, where the predetermined location is The bandwidth of the current system and the ID of the cell are determined.
- the processing module 1201 may be further configured to group the symbols to be mapped, each group contains m3 symbols, and map according to a group of symbols corresponding to one adjacent resource unit, where m3 is a predefined number, mapping The interval between adjacent resource units of the to-be-mapped symbol is a predefined interval.
- 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.
- 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.
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Abstract
本发明公开了一种指示控制信道的方法及装置,该指示控制信道的方法包括:对指示控制信道的指示信息进行信道化处理,其中,控制信道为新增加的控制信道区域或者在PDSCH资源上开辟的新的传输控制信息的资源上的控制信道;将处理后的指示信息发送至UE。采用本发明能够解决目前UE无法对于新增的下行控制信道进行检测的问题。
Description
指示控制信道的方法及装置 技术领域 本发明涉及通信领域, 具体而言, 涉及一种指示控制信道的方法及装置。 背景技术 长期演进(Long Term Evolution, LTE)系统中有两种帧结构, 帧结构类型(Type)
1适用于频分全双工 (Frequency Division Duplex, FDD ) 和频分半双工。 每个无线帧 长为 10ms, 由 20个时隙 (slot) 组成, 每个时隙 0.5ms, 编号从 0到 19。 其中, 一个 子帧(subframe)由两个连续的时隙组成, 如子帧 i由两个连续的时隙 2i和 2i+l组成。 无论是半双工 FDD还是全双工 FDD, 上下行都是在不同的频率上传输, 但是对于半 双工 FDD, UE不能同时发送和接收数据; 而对于全双工 FDD就没有这个限制, 即在 每 10ms间隔内可以有 10个下行和 10个上行子帧。 帧结构 Type 2适用于时分双工 (Time Division Duplex, TDD)。 一个无线帧长度 为 10ms, 由两个长度为 5ms的半帧 (half-frame) 组成。 一个半帧由 5个长度为 1ms 子帧组成。 支持的上下行链路配置如表 1所示, 表中" D"表示该子帧为下行子帧, "U" 表示该子帧为上行子帧, "S"表示该子帧为特殊子帧 (special subframe)。 特殊子帧由 下行特殊子帧 (DwPTS ) , 保护间隔 (GP ) 以及上行特殊子帧 (UpPTS ) 组成, 总长 度为 lms。 每个子帧 i由两个长度为 0.5ms ( 15360 X Ts) 的时隙 2i和 2i+l组成。 表 1 上下行链路配置
帧结构 Type 2支持 5ms和 10ms两种下行-上行转换周期。在 5ms的上下行转换周 期中, 两个半帧都有特殊子帧。 在 10ms 的上下行转换周期中, 只有第一个半帧有特 殊子帧。 子帧 0、 5和 DwPTS通常被预留为下行传输。 UpPTS和紧接着特殊子帧的下 一个子帧总是预留为上行传输。 因此对 5ms的上下行转换周期, UpPTS、 子帧 2和子 帧 7预留为上行传输; 对 10ms的上下行转换周期, UpPTS、 子帧 2预留为上行传输。
LTE中定义了如下三种下行物理控制信道: 物理下行控制格式指示信道(Physical Control Format Indicator Channel, PCFICH)、物理混合自动重传请求指示信道(Physical Hybrid Automatic Retransmission Request Indicator Channel, PHICH )、 物理下行控制信 道 (Physical Downlink Control Channel, PDCCH)。 其中, PCFICH承载的信息用于指示在一个子帧里传输 PDCCH的正交频分复用
( Orthogonal Frequency Division Multiplexing, OFDM) 符号的数目, 在子帧的第一个 OFDM符号上发送, 所在频率位置由系统下行带宽与小区标识 (Identity, 简称为 ID) 确定。
PHICH用于承载上行传输数据的肯定应答 /否定应答 (ACK/NACK) 反馈信息。 PHICH 的数目、 时频位置可由 PHICH 所在的下行载波的物理广播信道 (Physical Broadcast Channel, PBCH) 中的系统消息和小区 ID确定。
PDCCH用于承载下行控制信息 (Downlink Control Information, DCI), 包括: 物 理上行共享信道 (Physical Uplink Shared Channel, PUSCH) 的调度信息、 物理下行共 享信道(Physical Downlink Shared Channel, PDSCH)的调度信息以及上行功率控制信 息。 对于 FDD,当 UE在子帧 n检测到属于该 UE的承载 PUSCH的调度信息的 PDCCH 信道, 或者该 UE在子帧 n接收到属于该 UE的 PUSCH对应的 PHICH时, 根据情况 UE将在子帧 n+4上发送 PUSCH的数据。 对于 TDD上下行链路配置 1~6,当 UE在子帧 n检测到属于该 UE的承载 PUSCH 调度信息的 PDCCH信道, 或者, 该 UE在子帧 n接收到属于该 UE的 PUSCH对应的 PHICH时, 根据情况 UE将在子帧 n+k上发送 PUSCH的数据。对于 TDD上下行链路 配置 0, 当 UE在子帧 n检测到属于该 UE的承载 PUSCH调度信息的 PDCCH信道, 并且调度信息中上行索引 UL Index信令的高位为 1, 或者当 UE在子帧 0和子帧 5上 接收到属于该 UE的 PUSCH对应的 PHICH, 并且 IPHICH=0, 根据情况 UE将在子帧 n+k上发送 PUSCH的数据。 当 UE在子帧 n检测到属于该 UE的承载 PUSCH的调度 信息的 PDCCH信道, 并且调度信息中 UL Index信令的低位为 1, 或者当 UE在子帧 0
和子帧 5上接收到属于该 UE的 PUSCH的对应的 PHICH,并且 IPHICH=1,根据情况, UE将在子帧 n+7上发送 PUSCH的数据。 上述 k值, 如表 2所示; 表 2 TDD 配置 0-6对应的 k值示意表
在 LTE系统的版本(Release, R) 8/9中, 为了对信道的质量进行测量以及对接收 的数据符号进行解调, 设计了公共参考信号 (Common Reference Signal, CRS)。 用户 设备 (User Equipment, UE) 可以通过 CRS进行信道的测量, 从而支持 UE进行小区 重选和切换到目标小区, 并且在 UE连接状态进行信道质量的测量。 当干扰级别较高 时, 物理层可以通过高层相关的无线链路连接失败信令断开连接。 在 LTE R10中为了 进一步提高小区平均的频谱利用率和小区边缘频谱利用率以及各个 UE的吞吐率, 分 别定义了两种参考信号: 信道信息参考信号 (CSI-RS )和解调参考信号 (DMRS ) , 其 中, CSI-RS用于信道的测量, 通过对 CSI-RS的测量可以计算出 UE需要向基站 e B 反馈的预编码矩阵索引(Precoding Matrix Indicator, PMI)、信道质量信息指示(Channel Quality Indicator, CQI) 以及秩指示 (Rank Indicator, RI)。 DMRS用于下行共享信道 的解调,利用 DMRS解调可以利用波束的方法减少不同接收侧和不同小区之间的干扰, 而且可以减少码本粒度造成的性能下降, 并且在一定程度上减少了下行控制信令的开 销。 在 LTE R8、 R9和 R10中, 物理下行控制信道主要分布在一个子帧的前 1、 2或者 3个 OFDM, 具体分布需要按照不同的子帧类型和 CRS的端口数目来配置, 如表 3所 示。 表 3 物理下行控制信道分布
WRB > 10的 PDCCH (物理下
行控制信道) OFDM符号
数目
子帧类型 2中的子帧 1和子帧 6 1, 2 2 支持 PDSCH的载波上的 MBSFN(多 1, 2 2
播单频网络) 子帧, CRS 配置为 1
或者 2端口
支持 PDSCH的载波上的 MBSFN子 2 2
帧, CRS配置为 4端口
不支持 PDSCH传输载波上的子帧 0 0
配置为 PRS的非 MBSFN子帧 (除 1, 2, 3 2, 3
了帧结构类型 2的子帧 6)
所有其他情况 1, 2, 3 2, 3, 4
实施时, 每个接收侧需要根据接收的前三个符号进行盲检, 盲检的起始位置和控 制信道的元素数目, 与分配给接收侧的无线网络暂时标识和不同控制信息有关。 一般 可以把控制信息分为公有控制信息和专有控制信息, 公有控制信息一般放置在物理下 行控制信道的公共搜索空间,专有控制信息可以放置在公共所有空间和专用搜索空间。 接收侧在盲检后确定当前子帧是否存在公共系统消息、 下行调度或者上行调度信息。 由于这种下行控制信息没有混合自动重传请求 (Hybrid Automatic Repeat reQuest, HARQ) 反馈, 所以需要保证检测的误码率尽可能低。 为了获得更大的工作频谱和系统带宽, 一个解决技术是将几个分布在不同频段上 的连续分量载频 (频谱) (Component Carrier) 采用载波聚集 (Carrier Aggregation) 技 术聚合起来, 形成 LTE- Advanced可以使用的带宽, 例如: 100MHz。 即对于聚集后的 频谱, 被划分为 n个分量载频 (频谱), 每个分量载频 (频谱) 内的频谱是连续的。 频 谱划分为两类主分类载波 (PCC) 和辅分量载波 (SCC), 也称为主小区和辅小区。 在 LTE R10异构网下, 由于不同基站类型有较强的干扰, 考虑了宏基站 (Macro eNodeB)对微基站(Pico) 的干扰问题和家庭基站(Home eNodeB)对宏基站(Macro eNodeB)干扰问题, 提出利用资源静默的方法来解决不同类型基站之间的相互干扰问 题, 具体的资源静默方法可以分为基于子帧的静默 (Muting) 方法, 例如: 数据空子 帧 (Almost Blank Subframe, ABS) 的方法; 还可以为基于资源元素的方法, 例如: CRS静默方法。 但是, 以上方法不但增加了资源的浪费, 而且对于调度带来了极大的限制, 特别 是在考虑 Macro eNodeB的 ABS配置时, 如果 Pico的分布较多, Macro eNodeB配置 的 ABS较多, 这样会给 Macro eNodeB带来较大的影响, 在增加资源浪费的同时还增 加了调度时延; 而且无法解决 CRS资源和数据资源的干扰问题, 对于静默 CRS的方
法亦无法解决数据资源之间的干扰。 另外, 以上方法的后向兼容性不好, 在增加接入 时延的同时可能需要更多的标准化努力。 在 LTE R11阶段考虑引入更多的用户 PDSCH区域上发射数据, 目前配置的最多 4个 OFDM符号的容量就可能不足以满足需要, 为了提供经济与大容量的控制信道, 就需要设计一种增强的控制信道区域, 或需要在 PDSCH资源上开辟新的传输控制信 息的资源。 但是目前对于新资源上的控制信息的传输方式并没有进行确定, 而旧版本 的控制信息的传输方式又不能够保证新资源上的控制信息的传输的准确性。 针对相关技术中目前对于新资源上的控制信息的传输方式并没有进行确定, 而旧 版本的控制信息的传输方式又不能够保证新资源上的控制信息的传输的准确性的问 题, 目前尚未提出有效的解决方案。 发明内容 本发明的主要目的在于提供一种指示控制信道的方法及装置, 以至少解决上述目 前对于新资源上的控制信息的传输方式并没有进行确定, 而旧版本的控制信息的传输 方式又不能够保证新资源上的控制信息的传输的准确性的问题。 根据本发明的一个方面, 提供了一种指示控制信道的方法, 包括: 对指示控制信 道的指示信息进行信道化处理, 其中, 所述控制信道为新增加的控制信道区域或者在 物理下行共享信道 (PDSCH) 资源上开辟的新的传输控制信息的资源上的控制信道; 将处理后的指示信息发送至用户设备 (UE)。 优选的, 所述将处理后的指示信息发送至 UE之后, 还包括: 所述 UE接收所述 指示信息, 根据所述指示信息检测所述控制信道。 优选的, 所述指示信息包括下列至少之一: 控制信道区域的时域位置; 所述控制 信道区域的频域位置; 指示所述控制信道区域的方法类型; 指示所述控制信道在所述 控制信道区域上的资源分配的方式; 指示所述控制信道上所承载的控制信令与其所调 度的数据在时间上的映射关系。 优选的, 所述信道化处理包括以下编码、 调制、 层映射、 天线端口映射信道化过 程。 优选的, 所述指示信息承载于指定的物理或逻辑资源上。
优选的, 所述指示信息承载于指定的物理或逻辑资源上, 包括下列至少之一: 所 述指示信息单独承载于所述物理或逻辑资源上; 所述指示信息附加循环校验码(CRC) 承载于所述物理或逻辑资源上;所述指示信息和其他控制信息共同附加所述 CRC承载 于所述物理或逻辑资源上。 优选的,所述物理或逻辑资源包括:传输控制信息的物理下行控制信道(PDCCH) 的逻辑资源 (CCE); 或者所述 PDSCH上的资源。 优选的, 所述 PDSCH 上的资源包括除去所述 PDCCH所占用的正交频分复用 (OFDM) 符号外的其他 OFDM符号资源。 优选的,所述指示信息承载于所述 CCE上时,将所述指示信息承载在连续的 CCE 上, 其中, 所述指示信息的起始位置为预定义的至少一个 CCE编号中的一个, 所述预 定义的 CCE是承载所述指示信息的 CCE个数的整数倍。 优选的,只预定一个 CCE编号情况下,所述指示信息的起始位置为下列任意之一: 位于所述 CCE编号之始; 位于所述 CCE编号之末; 位于一个指定位置, 其中, 所述 指定位置为按照预设算法计算出的一个位置。 优选的, 所述 UE接收所述指示信息包括: 所述指示信息单独承载于所述物理或 逻辑资源上时, 所述 UE获取所述 CCE上的数据, 并从指定位置上取出经过所述信道 化处理的指示信息数据, 解码后获得所述指示信息; 所述指示信息附加循环校验码 (CRC)承载于所述物理或逻辑资源上时, 所述 UE获取所述 CCE上的数据, 并从指 定位置上取出经过所述信道化处理的指示信息数据,解码后利用所述 CRC校验获得的 信息, 确定校验通过的信息为所述指示信息; 所述指示信息和其他控制信息共同附加 所述 CRC承载于所述物理或逻辑资源上时, 所述 UE获取所述 CCE上的数据, 并从 指定位置上取出经过所述信道化处理的指示信息和所述其他控制信息数据, 解码后利 用所述 CRC校验获得的信息,确定校验通过的信息为所述指示信息与所述控制信息共 同信息, 从所述共同信息中获取所述指示信息。 优选的,所述指示信息承载于所述 CCE上时,将所述指示信息承载在连续的 CCE 上, 其中, 所述起始位置的 CCE编号是承载所述指示信息的 CCE个数的整数倍, 并 在预定义的至少一个可能位置中的选择一个位置。 优选的, 所述 UE接收所述指示信息包括: 所述指示信息附加 CRC承载于所述物 理或逻辑资源上时, 所述 UE获取所述 CCE上的数据, 并试探从至少一个预定义的位 置上取出经过所述信道化处理的指示信息数据, 解码后利用所述 CRC 校验获得的信
息, 确定校验通过的信息为所述指示信息; 所述指示信息和其他控制信息共同附加所 述 CRC承载于所述物理或逻辑资源上时, 所述 UE获取所述 CCE上的数据, 并试探 从至少一个预定义的位置上取出经过所述信道化处理的指示信息和所述其他控制信息 数据,解码后利用所述 CRC校验获得的信息,确定校验通过的信息为所述指示信息与 所述控制信息共同信息, 从所述共同信息中获取所述指示信息。 优选的, 所述指示信息承载于所述 PDSCH上的资源时, 将映射到天线端口的所 述指示信息的数据映射到所述 PDSCH区域中的预定位置, 其中, 所述预定位置根据 当前系统的带宽以及小区的标识 (ID) 确定。 优选的, 所述将映射到天线端口的所述指示信息的数据映射到所述 PDSCH区域 中的预定位置, 包括: 将待映射符号进行分组, 每组含有 m3个符号, 按照一组符号 对应一个邻近资源单位进行映射, 其中所述 m3是预定义数目, 映射所述待映射符号 的所述邻近资源单位之间的间隔为预定义间隔。 优选的, 所述 PDSCH上的资源包括除去所述 PDCCH所占用的 OFDM符号外的 其他 OFDM符号资源。 根据本发明的另一个方面, 提供了一种指示控制信道的装置, 包括: 处理模块, 设置为对指示控制信道的指示信息进行信道化处理, 其中, 所述控制信道为新增加的 控制信道区域或者在 PDSCH资源上开辟的新的传输控制信息的资源上的控制信道; 发送模块, 设置为将处理后的指示信息发送至 UE。 优选的,所述处理模块还设置为将所述指示信息承载于指定的物理或逻辑资源上。 优选的, 所述处理模块还设置为所述指示信息承载于下列至少之一的物理或逻辑 资源上: 所述指示信息单独承载于所述物理或逻辑资源上; 所述指示信息附加 CRC承 载于所述物理或逻辑资源上;所述指示信息和其他控制信息共同附加所述 CRC承载于 所述物理或逻辑资源上。 优选的, 所述处理模块还设置为所述指示信息承载于所述 CCE上时, 将所述指示 信息承载在连续的 CCE上,其中,所述指示信息的起始位置为预定义的至少一个 CCE 编号中一个, 所述预定义的 CCE是承载所述指示信息的 CCE个数的整数倍。 优选的, 所述处理模块还设置为所述指示信息承载于所述 PDSCH上的资源时, 将映射到天线端口的所述指示信息的数据映射到所述 PDSCH区域中的预定位置, 其 中, 所述预定位置根据当前系统的带宽以及小区的 ID确定。
优选的, 所述处理模块还设置为将待映射符号进行分组, 每组含有 m3个符号, 按照一组符号对应一个邻近资源单位进行映射, 其中所述 m3是预定义数目, 映射所 述待映射符号的所述邻近资源单位之间的间隔为预定义间隔。 在本发明实施例中, 为保证 UE对新的控制资源上的信息的正确方便接收, 设置 了新的指示信息, 并利用新的指示信息指示控制信息, 后续 UE可以根据指示信息对 控制信息进行检测, 实现新资源上的信息的正确方便接收。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中: 图 1是根据本发明实施例的指示控制信道的方法的处理流程图; 图 2是根据本发明实施例的实施例二的频域位置信息的位置与大小的示意图; 图 3是根据本发明实施例的信息位不够固定尺寸的大小, 剩余位置用 0填充的示 意图; 图 4A是根据本发明实施例的指示信息经过数据化处理的第一种流程图; 图 4B是根据本发明实施例的指示信息经过数据化处理的第二种流程图; 图 5是根据本发明实施例的实施例十的不附加 CRC的指示信息的处理流程图; 图 6是根据本发明实施例的实施例十的指示信息在 CCE上的位置的示意图; 图 7是根据本发明实施例的实施例十一的附加 CRC的指示信息的处理流程图; 图 8是根据本发明实施例的实施例十一的指示信息在 CCE上的位置的示意图; 图 9是根据本发明实施例的实施例十二的指示信息和其他控制信息共同附加 CRC 的处理流程图; 图 10是根据本发明实施例的实施例十二的指示信息在 CCE上的位置的示意图; 图 11是根据本发明实施例的实施例十三的映射到天线端口的数据映射到 PDSCH 区域中的预定位置的示意图;
图 12是根据本发明实施例的指示控制信道的装置的结构示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 相关技术中提到,在 LTE R11阶段考虑引入更多的用户 PDSCH区域上发射数据, 目前配置的最多 4个 OFDM符号的容量就可能不足以满足需要,为了提供经济与大容 量的控制信道, 就需要设计一种增强的控制信道区域, 或需要在 PDSCH资源上开辟 新的传输控制信息的资源。 但是目前对于新资源上的控制信息的传输方式并没有进行 确定, 而旧版本的控制信息的传输方式又不能够保证新资源上的控制信息的传输的准 确性。 为了保证 UE对新的控制资源上的信息的正确方便接收, 就需要对新资源上传输 控制信息的方式进行一些必要的指示。 为解决上述技术问题, 本发明实施例提供了一 种指示控制信道的方法, 其处理流程如图 1所示, 包括步骤 S102至步骤 S104。 步骤 S102、 对指示控制信道的指示信息进行信道化处理; 其中, 步骤 S102中涉及的控制信道为新增加的控制信道区域或者在 PDSCH资源 上开辟的新的传输控制信息的资源上的控制信道; 步骤 S104、 将处理后的指示信息发送至用户设备 UE。 在本发明实施例中, 为保证 UE对新的控制资源上的信息的正确方便接收, 设置 了新的指示信息, 并利用新的指示信息指示控制信息, 后续 UE可以根据指示信息对 控制信息进行检测, 实现新资源上的信息的正确方便接收。 实施时, 将处理后的指示信息发送至 UE之后, UE接收指示信息, 进而能够根据 指示信息检测控制信道。若指示信息指示不存在控制信道, UE就不需要对 UE进行检 测, 从而节省资源; 若指示信息指示存在控制信道, UE就根据指示信息查找控制信道 的位置, 并对其进行检测, 针对性强, 不需要采用轮询或其他方式对所有的资源进行 查找, 同样能够达到节省资源的目的, 并且能够增加调度 UE的容量。 指示信息的目的是设置为指示控制信道, 因此, 指示信息包括能够指示控制信息 的各种信息, 例如, 控制信道区域的时域位置, 再例如, 控制信道区域的频域位置, 指示控制信道区域的方法类型(说明以什么方法来指示控制信道区域),指示控制信道
在控制信道区域上的资源分配的方式, 指示控制信道上所承载的控制信令与其所调度 的数据在时间上的映射关系, 等等。 在具体实施时, 可以采用上述各种信息中的任意 一种作为指示信息, 也可能采用其中的任意几种的组合作为指示信息, 只要其单独的 信息或者组合信息能够达到指示控制信道的目的即可。 现以几个具体实施例对指示信息的类型及相应的设置进行详细进行说明。 实施例一: 本实施例中指示信息只包括控制信道区域的时域位置信息 例 1、 控制信道区域在第 1个时隙上: 方法 1、 控制信道区域为第 1个时隙从第 S个 OFDM符号开始的连续 K个 OFDM符号; 应用 1、 S、 K由指示信息给出; 应用 2、 S为预定义, K由指示信息给出; 应用 3、 S由指示信息给出, K为预定义。 方法 2、 控制信道区域为第 1个时隙从第 1个 OFDM符号开始的连续 K个 OFDM符号; K由指示信息给出。 例 2、 控制信道区域在第 2个时隙上: 方法 1、 控制信道区域为第 2个时隙从第 S个 OFDM符号开始的连续 K个 OFDM符号; 应用 1、 S、 K由指示信息给出; 应用 2、 S为预定义, K由指示信息给出; 应用 3、 S由指示信息给出, K为预定义。 方法 2、 控制信道区域为第 2个时隙从第 1个 OFDM符号开始的连续 K个 OFDM符号;
K由指示信息给出。
例 3、 控制信道区域在第 1或第 2个时隙上: 由指示信息给出控制信道区域所在的时隙。 实施例二: 本实施例中指示信息只包括控制信道区域的频域位置信息 例 1、 频域区域为 k2个这样子区域的和 (并), 这里的任意一个子区域是: 从预 定的一个起始位置开始按增序连续 m2*P2个资源块 (RB); 其中 P2是预定的, k2个 起始位置是预定义的, m2由指示信息给出。 其示意图如图 2所示。 例 2、采用文档 3GPP TS 36.213中资源分配(Resource allocation)所使用的 typeO/1/2 提到的方法。 实施例三:本实施例中指示信息包括控制信道区域的频域位置信息 +指示控制信道 区域的方法 指示信息给出对频域位置的指示, 同时给出指示频域位置的方法。 具体应用,基站配置了多种指示频域位置的方法, UE需要使用正确的方法去理解 基站给出的频域位置的指示, 这样才能得到关于频域位置的信息。 更进一步, 指示控制信道区域的方法, 使用 bit的 0、 1组合明确告诉 UE现在使 用的指示控制区域的方法, 例如表四: 表四
实施例四:本实施例中指示信息包括控制信道区域的频域位置信息 +控制信道在控 制信道区域上的资源分配的方式 具体应用, 一个控制信道在控制信道区域上的分配到的频域资源可以是连续的, 也可是分隔的, 也可以是虚拟分布似的, 还可以是与其它控制信道资源交织; 所以在 有多种配置且不预定的情况下,应当指出控制信道在控制信道区域上的资源分配方式。 实施例五:本实施例中指示信息包括控制信道区域的频域位置信息 +控制信道在控 制信道区域上的资源分配的方式
实施例六:本实施例中指示信息包括控制信道区域的频域位置信息 +指示控制信道 区域的方法 +控制信道在控制信道区域上的资源分配的方式 实施例七:本实施例中指示信息包括控制信道区域的时域位置信息 +指示控制信道 区域的方法 +控制信道在控制信道区域上的资源分配的方式 实施例八:本实施例中指示信息包括控制信道区域的时域位置信息 +控制信道上所 承载的控制信令与其所调度的数据在时间上的关系 实施例九:本实施例中指示信息包括控制信道区域的频域位置信息 +控制信道上所 承载的控制信令与其所调度的数据在时间上的关系 控制信道在第 n子帧上发出, 根据控制信道发射的数据在第 n+k帧发出, 其中 k 由指示信息给出。 更进一步, 指示信息在形成 0、 lbit信息串的过程中, 为了得到预定的 bit数量, 可以增加占位 bit。 占位 bit应位于信息串的尾部, 并以 0的形式出现。 其示意图请参 见图 3。 在图 1所示流程中提到对指示信道进行信道化处理, 其中涉及的信道化处理可以 包括以下编码、 调制、 层映射、 天线端口映射信道化过程。 由于指示信息不能够单独 存在, 因此, 需要将指示信息承载于指定的物理或逻辑资源上。 承载指示信息的资源 不同, 相应的处理流程也不同。 例如, 指示信息经过数据化处理的流程如图 4A所示, 包括: 包含控制信道指示信息的数据经编码、 承载于逻辑资源上、 经其他信道化处理 后发射; 或者如图 4B所示, 包含控制信道指示信息的数据经信道化处理、 承载于物 理资源上处理后发射。 实施时, 指示信息承载于指定的物理或逻辑资源上存在多种承载形式, 例如, 指 示信息可以单独承载于物理或逻辑资源上, 为保证指示信息的准确性, 指示信息也可 以附加循环校验码 CRC承载于物理或逻辑资源上,为充分利用资源,避免资源的浪费, 指示信息还可以和其他控制信息共同附加 CRC承载于物理或逻辑资源上。 在一个优选的实施例中, 物理或逻辑资源可以选择传输控制信息的物理下行控制 信道 PDCCH的逻辑资源 CCE或者物理下行共享信道 PDSCH上的资源。 实施时, 还 可以采用其他资源, 能够承载指示信息并将其发送至 UE即可。 其中, 上述的 PDSCH上的资源优选的采用 OFDM符号资源, 具体的, 是除去 PDCCH所占用的 OFDM符号外的其他 OFDM符号资源。在具体应用时, 可以将指示
信息承载在任意能够使用的 OFDM符号上, 也可以占用不止一个 OFDM符号,例如 2 个、 3个, 等等, 不超过能够使用的 OFDM符号数即可。 当指示信息承载于 CCE上时, 将指示信息承载在连续的 CCE上, 其中, 指示信 息起始位置为预定义的至少一个 CCE编号中的一个, 预定义的 CCE是承载指示信息 的 CCE个数的整数倍。 其中, 预定义起始位置仅为一个时, 优选的, 指示信息的起始 位置可以为下列任意之一: 位于 CCE编号之始; 位于 CCE编号之末; 或者还可以位 于一个指定位置, 其中, 指定位置为按照预设算法计算出的一个位置。 预设算法优选 的可以选择 3GPP TS 36.213中 PDCCH的公有搜索空间位置算法,或者其他位置算法, 根据具体情况而定。 另外, 指示信息预定义起始位置为多于一个时, 优选的, 预定义 的有限个数可能 CCE编号按预定义的算法算出, 预设算法优选的可以选择 3GPP TS 36.213中 PDCCH的公有搜索空间位置算法, 或者其他位置算法, 根据具体情况而定。 根据指示信息承载在物理或逻辑资源上的方式不同, 后续 UE接收指示信息后的 处理方式也不同, 具体的, 包括如下几种情况: 情况 A、 指示信息单独承载于物理或逻辑资源上时, UE获取 CCE上的数据, 并 从指定位置上取出经过信道化处理的指示信息数据, 解码后获得指示信息; 情况 B、指示信息附加 CRC承载于物理或逻辑资源上时, UE获取 CCE上的数据, 并从指定位置上取出经过信道化处理的指示信息数据,解码后利用 CRC校验获得的信 息, 确定校验通过的信息为指示信息; 情况 C、 指示信息和其他控制信息共同附加 CRC承载于物理或逻辑资源上时, UE获取 CCE上的数据, 并从指定位置上取出经过信道化处理的指示信息和其他控制 信息数据,解码后利用 CRC校验获得的信息,确定校验通过的信息为指示信息与控制 信息共同信息, 从共同信息中获取指示信息。 上述的情况 A-C是针对当预定义指示信息起始位置仅为一个 CCE编号的情况下 进行说明的, 实际应用中, 预定义指示信息起始位置也可能为多于一个 CCE编号, 此 时,必须利用 CRC对信息进行验证,保证信息的准确性,具体的,包括如下几种情况: 情况 D、指示信息附加 CRC承载于物理或逻辑资源上时, UE获取 CCE上的数据, 并试探从预定义的至少一个可能位置上取出经过信道化处理的所有可能的指示信息数 据, 解码后利用 CRC校验获得的信息, 确定校验通过的信息为指示信息;
情况 E、指示信息和其他控制信息共同附加 CRC承载于物理或逻辑资源上时, UE 获取 CCE上的数据,并试探从预定义的至少一个可能位置上取出经过信道化处理的所 有可能的指示信息和其他控制信息数据,解码后利用 CRC校验获得的信息,确定校验 通过的信息为指示信息与控制信息共同信息, 从共同信息中获取指示信息。 实施时, 指示信息承载于 PDSCH上的资源时, 将映射到天线端口的指示信息的 数据映射到 PDSCH区域中的预定位置, 其中, 预定位置根据当前系统的带宽以及小 区的标识 ID确定。 其中, 将待映射符号进行分组, 每组含有 m3个符号, 按照一组符 号对应一个邻近资源单位进行映射, 其中 m3 是预定义数目, 映射了符号的邻近资源 单位之间的间隔为预定义的。 后续处理中遵守预定义的规则。 下面结合不同的场景进行具体的实施例阐述。 场景 1:将关于 UE检测控制信道的指示信息承载于 PDCCH所使用逻辑资源 CCE 上, 经过信道化处理后发射出去。 实施例十: 本例中指示信息不附加 CRC
UE检测控制信道的指示信息不附加 CRC, 编码后承载于 PDCCH所使用逻辑资 源 CCE上, 经过信道化处理后发射出去。 具体的处理过程如图 5所示, 包括: 控制信 道指示信息经信道纠错编码、 放在 PDCCH的逻辑资源 CCE上、 对 CCE上的数据进 行加扰、 调制、 层映射、 到天线端口上数据的映射、 天线端口上数据到物理资源上的 映射后发射至 UE。 其中, 指示信息起始位置为预定义的 CCE编号, 指示信息放在连续的 CCE上, 并且指示信息起始位置的 CCE编号是所使用的 CCE个数的整数倍。 其示意图请参见 图 6。 本实施例中, 指示信息的起始位置可以有如下几种设置方式: 方法 1, 指示信息的起始位置位于 CCE编号之始。 方法 2, 指示信息的起始位置位于 CCE编号之末。 方法 3, 指示信息的起始位置按照 3GPP TS 36.213中 PDCCH的公有搜索空间位 置算法计算, 预定义计算出的位置中的一个。 具体应用, UE获得 CCE上的数据, 从预定义的位置上, 取出关于经过编码的指 示信息数据, 解码后获得指示信息。 实施例 ^一: 本例中指示信息附加 CRC
关于 UE检测控制信道的指示信息附加 CRC, 编码后承载于 PDCCH所使用逻辑 资源 CCE上, 经过信道化处理后发射出去。 具体的处理过程如图 7所示, 包括: 控制信道指示信息只根据控制信道指示信息计算 CRC, 并附加于控制信道指示信 息后; 对控制信道指示信息 +CRC进行信道纠错编码; 放在 PDCCH的逻辑资源 CCE上; 对 CCE上的数据进行加扰; 进而经调制、 层映射、 到天线端口上数据的映射、 天线端口上数据到物理资源上 的映射后发射至 UE。 本实施例中, 指示信息放在连续的 CCE上, 并且指示信息起始位置的 CCE编号 是所使用的 CCE个数的整数倍。 指示信息起始位置为预定义的至少一个 CCE编号中 的一个。 其示意图如图 8所示。 本实施例中如何确定指示信息的位置采用如下两种不同的处理方式: 方法 1、 由关于 UE检测控制信道的指示信息计算得到 CRC, 将关于 UE检测控 制信道的指示信息附加 CRC,编码后承载于 PDCCH所使用逻辑资源 CCE上,经过信 道化处理后发射出去。 指示信息放在连续的 CCE上, 并且指示信息起始位置的 CCE 编号是所使用的 CCE个数的整数倍。 指示信息起始位置为预定义的 CCE编号, 预定 义的指示信息起始位置仅为一个 CCE编号, 包括指示信息的起始位置位于 CCE编号 之始,或指示信息的起始位置位于 CCE编号之末,或指示信息的起始位置按照 3GPP TS 36.213中 PDCCH的公有搜索空间位置算法计算, 预定义计算出的位置中的一个。 方法 2、 由关于 UE检测控制信道的指示信息计算得到 CRC, 将关于 UE检测控 制信道的指示信息附加 CRC,编码后承载于 PDCCH所使用逻辑资源 CCE上,经过信 道化处理后发射出去。 指示信息放在连续的 CCE上, 并且指示信息起始位置的 CCE 编号是所使用的 CCE个数的整数倍。 指示信息起始位置为预定义的至少一个 CCE位 置中的一个, 预定义的指示信息起始位置为多于一个 CCE编号, UE不预先确定基站 会使用哪个具体位置, 预定义的指示信息起始位置按照 3GPP TS 36.213中 PDCCH的 公有搜索空间位置算法计算。
具体应用, UE获得 CCE上的数据, 依次从可能的几个的位置上, 取出关于经过 编码的指示信息数据, 解码后利用 CRC校验指示信息数据, 校验通过指示信息数据, 为目标指示信息数据。 实施例十二: 本例中指示信息和其他控制信息共同附加 CRC 将关于 UE检测控制信道的指示信息与其它控制信息一并附加 CRC, 编码后承载 于 PDCCH所使用逻辑资源 CCE上, 经过信道化处理后发射出去。 具体的处理过程如 图 9所示, 包括: 根据计算其它信息 +控制信道指示信息 CRC, 并将 CRC附加于其他信息 +控制信 道指示信息后; 对其它信息 +控制信道指示信息 +CRC进行信道纠错编码; 将其放在 PDCCH的逻辑单元 CCE上; 对 CCE上的数据进行干扰; 进而经调制、 层映射、 到天线端口上数据的映射、 天线端口上数据到物理资源上 的映射后发射至 UE。 指示信息放在连续的 CCE上,并且指示信息起始位置的 CCE编号是所使用的 CCE 个数的整数倍。指示信息起始位置为预定义至少一个 CCE编号中的一个。其示意图如 图 10所示。 本实施例中如何确定指示信息的位置采用如下两种不同的处理方式: 方法 1 : 由关于 UE 检测控制信道的指示信息及其它的控制信息一并计算得到 CRC, 将关于 UE检测控制信道的指示信息与其它的控制信息附加 CRC, 编码后承载 于 PDCCH所使用逻辑资源 CCE上, 经过信道化处理后发射出去。 指示信息放在连续 的 CCE上, 并且指示信息起始位置的 CCE编号是所使用的 CCE个数的整数倍。指示 信息起始位置为预定义的 CCE编号, 预定义的指示信息起始位置仅为一个 CCE编号, 包括指示信息的起始位置位于 CCE编号之始, 或指示信息的起始位置位于 CCE编号 之末, 或指示信息的起始位置按照 3GPP TS 36.213中 PDCCH的公有搜索空间位置算 法计算, 预定义计算出的位置中的一个。 方法 2: 由关于 UE 检测控制信道的指示信息及其它的控制信息一并计算得到
CRC, 将关于 UE检测控制信道的指示信息与其它的控制信息附加 CRC, 编码后承载
于 PDCCH所使用逻辑资源 CCE上, 经过信道化处理后发射出去。 指示信息放在连续 的 CCE上, 并且指示信息起始位置的 CCE编号是所使用的 CCE个数的整数倍。指示 信息起始位置为预定义的至少一个 CCE位置中的一个,预定义的指示信息起始位置为 多于一个 CCE编号, UE不预先确定基站会使用哪个具体位置, 预定义的起始位置按 照 3GPP TS 36.213中 PDCCH的公有搜索空间位置算法计算。 具体应用, UE获得 CCE上的数据, 依次从可能的几个的位置上, 取出关于经过 编码的指示信息与其它控制信息共同数据,解码后利用 CRC校验指示信息与其它控制 信息共同数据, 校验通过的数据, 为目标指示信息与其它控制信息共同数据, 再从共 同数据中获得控制信道的指示信息。 场景 2: 将关于 UE 检测控制信道的指示信息承载于 PDSCH 上的资源 (除去
PDCCH所占用 OFDM符号外, 其它剩余的 OFDM符号资源) ,经过信道化处理后发 射出去。 实施例十三: 本例中指示信息承载于 PDSCH上的资源 将关于 UE检测控制信道的指示信息承载于 PDSCH上的资源,经过信道化处理后 发射出去。 将映射到天线端口的数据映射到 PDSCH区域中的预定位置。 这个预定的 位置应当与系统的带宽、 小区 ID有关。 映射到天线端口的数据映射到 PDSCH区域中的预定位置的具体映射方法如下: 将关于 UE检测控制信道的指示信息承载于 PDSCH上的资源,经过信道化处理后 发射出去。 将映射到天线端口的数据映射到 PDSCH区域中的预定位置。 这个预定的 位置应当与系统的带宽、 小区 ID有关。 设邻近资源分配单位含有 m3个符号 (意思是 这 m3个符号需要放在邻近的资源上,不能分隔或分隔太大, 即预定间隔),记为 P (待 映射符号的单位);邻近资源单位 (资源单位,一个单位里提供的可映射资源是邻近的), 记为 Q, 能提供对 m3个符号的映射。天线端口上待映射符号为 n3个 P, PDSCH上限 制的可提供映射的资源为 n4个 Q,其中 n4≥n3,则 n3个 P应在 n4个 Q上尽量等间隔 映射。 其中 m3是预定义的。 映射后的资源示意图如图 11所示。 实施例十四 将关于 UE检测控制信道的指示信息承载于 PDSCH上的资源,经过信道化处理后 发射出去。 控制信道指示信息为 2bit, 使用 (3,2)分组码进行信道编码, 再进行重复 k 次, 得到编码后的指示信息数据。 其中, k的取值由涉及的相关协议或其他情况而定,
优选的, k的取值范围设置为 10-20中的整数, 若协议不同或者资源不同, k的取值上 限也可能是 30、 40、 50、 60甚至更多, 其下限也可能是小于 10的整数, 如 0-9任意 数值。 实施例十五 将关于 UE检测控制信道的指示信息承载于 PDSCH上的资源,经过信道化处理后 发射出去。 控制信道指示信息为 3bit, 使用 (4,3)分组码进行信道编码, 再进行重复 k 次, 得到编码后的指示信息数据。 k的取值范围 10-20中的整数。 基于同一发明构思, 本发明实施例还提供了一种指示控制信道的装置, 其结构示 意图如图 12所示, 包括: 处理模块 1201, 设置为对指示控制信道的指示信息进行信道化处理, 其中, 控制 信道为新增加的控制信道区域或者在物理下行共享信道 PDSCH资源上开辟的新的传 输控制信息的资源上的控制信道; 发送模块 1202, 与处理模块 1201相连, 设置为将处理后的指示信息发送至用户 设备 UE。 在一个实施例中,优选的, 处理模块 1201还可以设置为将指示信息承载于指定的 物理或逻辑资源上。 在一个实施例中,优选的, 处理模块 1201还可以设置为指示信息承载于下列至少 之一的物理或逻辑资源上: 指示信息单独承载于物理或逻辑资源上; 指示信息附加循环校验码 CRC承载于物理或逻辑资源上; 指示信息和其他控制信息共同附加 CRC承载于物理或逻辑资源上。 在一个实施例中, 优选的, 处理模块 1201还可以设置为指示信息承载于 CCE上 时, 将指示信息承载在连续的 CCE上, 其中, 指示信息的起始位置为预定义的至少一 个 CCE编号中一个, 预定义的 CCE是承载指示信息的 CCE个数的整数倍。 在一个实施例中, 优选的, 处理模块 1201还可以设置为指示信息承载于 PDSCH 上的资源时, 将映射到天线端口的指示信息的数据映射到 PDSCH区域中的预定位置, 其中, 预定位置根据当前系统的带宽以及小区的 ID确定。
在一个实施例中, 优选的, 处理模块 1201还可以设置为将待映射符号进行分组, 每组含有 m3个符号,按照一组符号对应一个邻近资源单位进行映射,其中 m3是预定 义数目, 映射待映射符号的邻近资源单位之间的间隔为预定义间隔。 从以上的描述中, 可以看出, 本发明实现了如下技术效果: 在本发明实施例中, 为保证 UE对新的控制资源上的信息的正确方便接收, 设置 了新的指示信息, 并利用新的指示信息指示控制信息, 后续 UE可以根据指示信息对 控制信息进行检测, 实现新资源上的信息的正确方便接收。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而, 可以 将它们存储在存储装置中由计算装置来执行, 并且在某些情况下, 可以以不同于此处 的顺序执行所示出或描述的步骤, 或者将它们分别制作成各个集成电路模块, 或者将 它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明不限制于任 何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。
Claims
权 利 要 求 书
1. 一种指示控制信道的方法, 包括:
对指示控制信道的指示信息进行信道化处理, 其中, 所述控制信道为新增 加的控制信道区域或者在物理下行共享信道 PDSCH资源上开辟的新的传输控 制信息的资源上的控制信道;
将处理后的指示信息发送至用户设备 UE。
2. 根据权利要求 1所述的方法, 其中, 所述将处理后的指示信息发送至 UE之后, 还包括: 所述 UE接收所述指示信息, 根据所述指示信息检测所述控制信道。
3. 根据权利要求 1所述的方法, 其中, 所述指示信息包括下列至少之一:
控制信道区域的时域位置;
所述控制信道区域的频域位置;
指示所述控制信道区域的方法类型;
指示所述控制信道在所述控制信道区域上的资源分配的方式; 指示所述控制信道上所承载的控制信令与其所调度的数据在时间上的映射 关系。
4. 根据权利要求 1所述的方法, 其中, 所述信道化处理包括以下编码、 调制、 层 映射、 天线端口映射信道化过程。
5. 根据权利要求 1或 2所述的方法, 其中, 所述指示信息承载于指定的物理或逻 辑资源上。
6. 根据权利要求 5所述的方法, 其中, 所述指示信息承载于指定的物理或逻辑资 源上, 包括下列至少之一:
所述指示信息单独承载于所述物理或逻辑资源上;
所述指示信息附加循环校验码 CRC承载于所述物理或逻辑资源上; 所述指示信息和其他控制信息共同附加所述 CRC 承载于所述物理或逻辑 资源上。
根据权利要求 6所述的方法, 其中, 所述物理或逻辑资源包括: 传输控制信息 的物理下行控制信道 PDCCH的逻辑资源 CCE; 或者所述 PDSCH上的资源。
8. 根据权利要求 6所述的方法,其中,所述 PDSCH上的资源包括除去所述 PDCCH 所占用的正交频分复用 OFDM符号外的其他 OFDM符号资源。
9. 根据权利要求 6所述的方法, 其中, 所述指示信息承载于所述 CCE上时, 将所 述指示信息承载在连续的 CCE上,其中,所述指示信息的起始位置为预定义的 至少一个 CCE编号中的一个, 所述预定义的 CCE是承载所述指示信息的 CCE 个数的整数倍。
10. 根据权利要求 9所述的方法,其中,所述指示信息的起始位置为下列任意之一: 位于所述 CCE编号之始;
位于所述 CCE编号之末;
位于一个指定位置, 其中, 所述指定位置为按照预设算法计算出的一个位 置。
11. 根据权利要求 10所述的方法, 其中, 所述 UE接收所述指示信息包括:
所述指示信息单独承载于所述物理或逻辑资源上时, 所述 UE 获取所述 CCE上的数据, 并从指定位置上取出经过所述信道化处理的指示信息数据, 解 码后获得所述指示信息;
所述指示信息附加循环校验码 CRC承载于所述物理或逻辑资源上时,所述 UE获取所述 CCE上的数据, 并从指定位置上取出经过所述信道化处理的指示 信息数据,解码后利用所述 CRC校验获得的信息,确定校验通过的信息为所述 指示信息;
所述指示信息和其他控制信息共同附加所述 CRC 承载于所述物理或逻辑 资源上时, 所述 UE获取所述 CCE上的数据, 并从指定位置上取出经过所述信 道化处理的指示信息和所述其他控制信息数据,解码后利用所述 CRC校验获得 的信息, 确定校验通过的信息为所述指示信息与所述控制信息共同信息, 从所 述共同信息中获取所述指示信息。
12. 根据权利要求 6所述的方法, 其中, 所述指示信息承载于所述 CCE上时, 将所 述指示信息承载在连续的 CCE上, 其中, 所述起始位置的 CCE编号是承载所
述指示信息的 CCE个数的整数倍,并在预定义的至少一个可能位置中的选择一 个位置。
13. 根据权利要求 12所述的方法, 其中, 所述 UE接收所述指示信息包括:
所述指示信息附加 CRC承载于所述物理或逻辑资源上时,所述 UE获取所 述 CCE上的数据,并试探从预定义的所述至少一个可能位置上取出经过所述信 道化处理的所有可能的指示信息数据, 解码后利用所述 CRC校验获得的信息, 确定校验通过的信息为所述指示信息;
所述指示信息和其他控制信息共同附加所述 CRC 承载于所述物理或逻辑 资源上时, 所述 UE获取所述 CCE上的数据, 并试探从预定义的所述至少一个 可能位置上取出经过所述信道化处理的所有可能的指示信息和所述其他控制信 息数据,解码后利用所述 CRC校验获得的信息,确定校验通过的信息为所述指 示信息与所述控制信息共同信息, 从所述共同信息中获取所述指示信息。
14. 根据权利要求 6所述的方法, 其中, 所述指示信息承载于所述 PDSCH上的资 源时, 将映射到天线端口的所述指示信息的数据映射到所述 PDSCH区域中的 预定位置, 其中, 所述预定位置根据当前系统的带宽以及小区的标识 ID确定。
15. 根据权利要求 14所述的方法,其中,所述将映射到天线端口的所述指示信息的 数据映射到所述 PDSCH区域中的预定位置, 包括: 将待映射符号进行分组, 每组含有 m3个符号, 按照一组符号对应一个邻近资源单位进行映射, 其中所 述 m3是预定义数目, 映射所述待映射符号的所述邻近资源单位之间的间隔为 预定义间隔。
16. 根据权利要求 1所述的方法,其中,所述 PDSCH上的资源包括除去所述 PDCCH 所占用的正交频分复用 OFDM符号外的其他 OFDM符号资源。
17. 一种指示控制信道的装置, 包括:
处理模块, 设置为对指示控制信道的指示信息进行信道化处理, 其中, 所 述控制信道为新增加的控制信道区域或者在物理下行共享信道 PDSCH资源上 开辟的新的传输控制信息的资源上的控制信道;
发送模块, 设置为将处理后的指示信息发送至用户设备 UE。
18. 根据权利要求 17所述的装置,其中,所述处理模块还设置为将所述指示信息承 载于指定的物理或逻辑资源上。
19. 根据权利要求 18所述的装置,其中,所述处理模块还设置为所述指示信息承载 于下列至少之一的物理或逻辑资源上: 所述指示信息单独承载于所述物理或逻辑资源上;
所述指示信息附加循环校验码 CRC承载于所述物理或逻辑资源上; 所述指示信息和其他控制信息共同附加所述 CRC 承载于所述物理或逻辑 资源上。
20. 根据权利要求 19所述的装置,其中,所述处理模块还设置为所述指示信息承载 于所述 CCE上时, 将所述指示信息承载在连续的 CCE上, 其中, 所述指示信 息的起始位置为预定义的至少一个 CCE编号中的一个, 所述预定义的 CCE是 承载所述指示信息的 CCE个数的整数倍。
21. 根据权利要求 19所述的装置,其中,所述处理模块还设置为所述指示信息承载 于所述 PDSCH上的资源时, 将映射到天线端口的所述指示信息的数据映射到 所述 PDSCH区域中的预定位置, 其中, 所述预定位置根据当前系统的带宽以 及小区的标识 ID确定。
22. 根据权利要求 21所述的装置,其中,所述处理模块还设置为将待映射符号进行 分组, 每组含有 m3个符号, 按照一组符号对应一个邻近资源单位进行映射, 其中所述 m3是预定义数目, 映射所述待映射符号的所述邻近资源单位之间的 间隔为预定义间隔。
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102263616B (zh) | 2018-07-20 |
| CN102263616A (zh) | 2011-11-30 |
| JP6086912B2 (ja) | 2017-03-01 |
| EP2747306A1 (en) | 2014-06-25 |
| JP2014526208A (ja) | 2014-10-02 |
| EP2747306A4 (en) | 2015-04-08 |
| US20140204812A1 (en) | 2014-07-24 |
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