WO2011153700A1

WO2011153700A1 - Method for transmitting and receiving message, base station and mobile station

Info

Publication number: WO2011153700A1
Application number: PCT/CN2010/073757
Authority: WO
Inventors: 王轶; 王键; 周华; 吴建明
Original assignee: 富士通株式会社
Priority date: 2010-06-10
Filing date: 2010-06-10
Publication date: 2011-12-15
Also published as: CN102771169A

Abstract

A method for transmitting a message for indicating uplink discontinuous resource allocation, a method for receiving the message, a base station and a mobile station are disclosed. The method for transmitting the message for indicating uplink discontinuous resource allocation includes: the information for indicating the uplink discontinuous resource allocation and a content identification information are carried in the message whose length is the same with that of the downlink control information (DCI) for the downlink scheduling, in which the content identification information indicates that the message is the message for indicating the uplink discontinuous resource allocation; the post processing including inserting the cyclic redundancy check (CRC) code, channel coding and modulating is executed for the message; and the message is transmitted through the physical downlink control channel (PDCCH), wherein the content identification information is carried in the message at the positions which correspond to the modulation and coding scheme (MCS) and the new data indicator (NDI) in the DCI which is used for the downlink scheduling.

Description

Message transmitting and receiving method, base station and mobile station

Technical field

The present invention generally relates to transmission techniques for wireless communication systems and, more particularly, to methods and apparatus for transmitting and receiving messages for indicating uplink discontinuous resource allocation.

Background technique

[02] In the LTE system, the uplink uses a single carrier frequency division multiplexing technology, that is, SC-FDMA (Single Carrier-FDMA). Fig. 1 shows a PUSCH data mapping flow using SC-FDMA. As shown in Figure 1, after the signal is DFT transformed, it is mapped to a continuous piece of physical resources, and after IFFT transformation, it is sent out. The base station carries control signaling for the uplink shared data channel (PUSCH, Physical Uplink Shared Channel) through the downlink control information (DCI) format 0. The main contents of DCI 0 include physical resource allocation information of PUSCH, modulation and coding information, pilot information, and the like. In the LTE system, various downlink control information is transmitted by the base station on the physical downlink control channel (PDCCH), and is mainly divided into DCIs for downlink scheduling (indicating PDSCH) (for example, DCI 1/2/2A, etc.) And DCI 0 for uplink scheduling (indicating PUSCH). The mobile station receives the PDCCH and performs blind detection on the possible DCIs that are sent to itself. If the DCI information is detected for itself, the PUSCH is transmitted or received according to the DCI information. Currently, it is stipulated in the LTE system that the maximum number of blind detections per user is 44.

[03] In the LTE-Advanced system in order to take advantage of the diversity gain in frequency domain, using frequency division multiplexing multiple clusters (CL-DFT-S-OFDM , Clustered DFT-Spread OFDM) β 2 illustrates the use of CL - PUTS data mapping of DFT-S-OFDM to the transmission procedure. As shown in Figure 2, after the signal is DFT-transformed, it is mapped to multiple physical resources, and after IFFT conversion, it is sent out. Each physical resource to which the signal is mapped is contiguous in the frequency domain, but multiple physical resources may be discontinuous in the frequency domain. Therefore, this resource mapping manner is also called discontinuous resource allocation. To support this new resource allocation method, a new DCI format needs to be redefined, and corresponding DCI message sending and receiving methods and devices are provided to indicate to the mobile station information such as physical resource allocation of the corresponding PUSCH. Summary of the invention

A brief summary of the invention is set forth below to provide a basic understanding of certain aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical aspects of the invention, and is not intended to limit the scope of the invention. Its purpose is to present some concepts in a simplified form as a pre-

The present invention is directed to at least solving the above technical problems in the prior art, and provides a DCI message transmitting and receiving method and apparatus for indicating uplink discontinuous resource allocation.

To this end, according to an aspect of the present invention, a method of transmitting a message for indicating uplink discontinuous resource allocation is provided. The method includes: carrying information indicating uplink non-contiguous resource allocation and content identification information in a message having the same length as a DCI for downlink scheduling, wherein the content identification information indicates that the message is for indication a message for uplink non-contiguous resource allocation; performing post-processing including inserting a cyclic redundancy check (CRC) code, channel coding, and modulation on the message; and transmitting the message through a physical downlink control channel. The content identification information is carried in a location in the message corresponding to a modulation and coding scheme (MCS) and a new data indication (NDI) in the DCI for downlink scheduling.

According to another aspect of the present invention, a message receiving method is provided. The method includes: receiving a message by using a physical downlink control channel; performing pre-processing including demodulation, channel decoding, and CRC check on the message to obtain a source message having the same length as a DCI for downlink scheduling Detecting content identification information in a location corresponding to the MCS and the NDI in the DCI for downlink scheduling in the message, to determine whether the source message is a message indicating an uplink discontinuous resource allocation; And if it is determined that the source message is a message for indicating uplink discontinuous resource allocation, information indicating an uplink discontinuous resource allocation is obtained from the source message.

According to another aspect of the present invention, a base station is provided. The base station includes: a message construction unit configured to carry information indicating the uplink discontinuous resource allocation and content identification information in a message having the same length as the DCI used for downlink scheduling, where the content identification information indicates The message is a message for indicating uplink discontinuous resource allocation; a post-processing unit configured to perform post-processing including inserting a cyclic redundancy check code, channel coding, and modulation on the message constructed by the message construction unit; And a sending unit, configured to send, after the post-processing unit, the processed message by using a physical downlink control channel. The message construction unit is further configured to carry the content identification information in a location in the message corresponding to the modulation and coding mode and the new data indication in the DCI for downlink scheduling. According to another aspect of the present invention, a mobile station is provided. The multi-stage includes: a receiving unit configured to receive a message by using a physical downlink control channel; and a pre-processing unit configured to perform pre-demodulation, channel decoding, and CRC check on the message received by the receiving unit Processing to obtain a source message having the same length as downlink control information for downlink scheduling; and a message parsing unit configured to correspond to the downlink control information for downlink scheduling in the source message Detecting content identification information in a modulation coding mode and a location indicated by the new data, to determine whether the source message is a message for indicating uplink discontinuous resource allocation, and if the source message is determined to be used to indicate an uplink non- The message of the continuous resource allocation acquires information indicating the allocation of the uplink discontinuous resource from the source message.

[10] These and other advantages of the present invention will become more apparent from the detailed description of the preferred embodiments of the invention.

DRAWINGS

The above and other objects, features and advantages of the present invention will become more <RTIgt; The components in the figures are merely illustrative of the principles of the invention. In the drawings, the same or similar technical features or components will be denoted by the same or similar reference numerals.

[12] FIG. 1 shows a PUSCH data mapping process using SC-FDMA.

[13] FIG. 2 shows a PUSCH data mapping using CL-DFT-S-OFDM to transmit a flow.

[14] FIG. 3 illustrates a MCS and NDI value range of a downlink scheduling DCI and a MCS and NDI value range of an uplink discontinuous resource allocation DCI according to an embodiment of the present invention.

4 shows a flow chart of a message transmission method for indicating uplink discontinuous resource allocation, in accordance with an embodiment of the present invention.

5A and 5B show bit information formats of DCI 1 and DCI 2 of the LTE system, respectively.

6A-6C respectively show examples of bit information formats of DCIs for uplink discontinuous resource allocation, in accordance with an embodiment of the present invention.

FIG. 7 shows a flow chart of a message receiving method according to an embodiment of the present invention.

FIG. 8 shows a schematic block diagram of a base station according to an embodiment of the present invention.

9 shows a schematic block diagram of a mobile station in accordance with an embodiment of the present invention. FIG. 10 shows a schematic block diagram of a wireless communication system in accordance with an embodiment of the present invention.

detailed description

Embodiments of the present invention will be described below with reference to the drawings. Elements and features described in one of the figures or embodiments of the invention may be combined with elements and features illustrated in one or more other figures or embodiments. It should be noted that, for the sake of clarity, representations and descriptions of components and processes known to those of ordinary skill in the art that are not relevant to the present invention are omitted from the drawings and the description.

[23] When defining a new DCI format, to avoid the maximum number of blind detections for new DCIs, the new DCI length can be limited to the same length as some existing DCIs in the LTE system. For example, the new DCI length may be the same as the single carrier uplink DCI 0 length, or the new DCI length may be the same length as the DCI for downlink scheduling (such as DCI 1/2/2A, etc.). Since the length of the single-carrier uplink DCI 0 is limited, if the new DCI and the DCI 0 are equal in length, the flexibility of the discontinuous resource allocation, such as limiting the number of blocks of the discontinuous frequency domain resources, is limited. Therefore, designing a new DCI of the same length as DCI 1/2/2A for downlink jitter is a more flexible and better performance method. In addition, in this case, it is necessary to consider how the mobile station can effectively distinguish between a new DCI for indicating uplink discontinuous resource allocation and a DCI for downlink scheduling (e.g., DCI 1/2/2A, etc.).

[24] In consideration of these factors, in the present invention, a new DCI having the same length as a DCI (such as DCI 1/2/2A or the like) for downlink scheduling is used to indicate uplink discontinuous resource allocation, and by utilizing Modulation Coding (MCS) information bits and New Data Indication (NDI) bits in the DCI for downlink strength to distinguish between DCI for downlink scheduling and new DCI for uplink discontinuous resource allocation.

[25] In the LTE system, DCIs for indicating downlink scheduling include MCS information and NDI information. The MCS information is 5 bits, corresponding to 32 modulation and coding rate combinations and corresponding transport block sizes, as shown in Table 1. The NDI information is 1 bit, which is used to indicate that the data transmitted by the PUSCH or PDSCH indicated by the current DCI is new data (ie, initially transmitted) or retransmitted data. For example, the data is new data with NDI=1, and the data is retransmitted with NDI=0. Or use the NDI transformation to judge whether the transmitted data is new data or retransmitted data. When the received NDI changes compared to the last received NDI, it indicates that the data is new data. When the received NDI remains unchanged from the last received NDI, it indicates that the data is retransmitted data.

[26] Table 1: Modulation Coding (MCS) and Transport Block Size (TBS) Index

3 is a schematic diagram showing an MCS and NDI value range of a downlink scheduling DCI and an MCS and NDI value range of an uplink discontinuous resource allocation DCI according to an embodiment of the present invention. As shown in the upper part of FIG. 3, in the DCI for downlink scheduling, when the MCS index is 0-28, the value of the NDI is 1 (NDI=1), indicating the PDSCH indicated by the DCI. The data carried is the data that was originally sent. The mobile station can obtain the size of the transport block and the modulation and coding information by reading the MCS index and referring to Table 1. When the MCS index is 29-31, the value of the NDI is zero (NDI=0), indicating that the data carried by the PDSCH indicated by the DCI is retransmitted data. The same transport block size as the initial transmission is used in the retransmission, and only the modulation scheme can be changed. Therefore, for a DCI for indicating downlink scheduling such as DCI 1/2/2A, a combination in which MCS is 29-31 and NDI is 1, and a combination in which MCS is 0-28 and NDI is 0 is unlikely.

[28] In the example of Figure 3, the value of NDI is used to distinguish between new data and retransmitted data. As described above, it is also possible to distinguish between new data and retransmitted data by using the transformation of the NDI value. In this case, for DCI for downlink scheduling, it is impossible to have a combination in which the MCS is 29-31 and the NDI value is changed from the NDI in the previously received DCI, and the MCS is 0-28. And the NDI value remains the same combination as the NDI in the previously received DCI.

Thus, according to an embodiment of the present invention, a new combination of MCS and NDI values different from the effective combination of the MCS value and the NDI value in the DCI for downlink scheduling may be used to identify a new indication for uplink. DCI for non-contiguous resource allocation.

[30] That is, when the CRC of the PDCCH is scrambled by C-RNTI, the 5-bit value range corresponding to the MCS in the DCI for downlink scheduling is defined in the new DCI to be 29-31. And the 1-bit value corresponding to the NDI in the DCI for downlink scheduling is an NDI value indicating new data in the DCI for downlink scheduling; or the 5-bit value range corresponding to the MCS is 0- 28 and the 1 bit value corresponding to the NDI is an NDI value indicating retransmission data in the DCI for downlink scheduling. After receiving the PDCCH and parsing the DCI of the bearer, the mobile station may determine whether the received DCI information is a DCI for downlink scheduling or a DCI for uplink discontinuous resource allocation according to the combination of the MCS and the NDI.

[31] In addition, when the 1-bit value corresponding to the NDI is the NDI value indicating the retransmission data in the DCI for downlink scheduling, only 1 bit corresponding to any one of the highest 3 bits of the MCS is used. The combination of 1 bit corresponding to the DNI can identify the DCI used for uplink discontinuous resource allocation. Setting the value of 1 bit corresponding to any one of the highest 3 bits of the MCS in the new DCI to 0 ensures that the value of the 5 bits of the MCS is in the range of 0-28. In this way, the remaining 4 bits in the MCS can be used to carry other information, thereby increasing the bit utilization and information capacity of the new DCI. [32] In the DCI for uplink discontinuous resource allocation according to an embodiment of the present invention, in addition to redefining a bit field at a position corresponding to MCS and NDI in DCI for downlink scheduling, In addition to distinguishing DCI for downlink scheduling and DCI for uplink discontinuous resource allocation, the remaining bit information of the new DCI may be newly defined as needed to transmit physical resource allocation information, modulation and coding information, Pilot and other information. The definition of the remaining bit information will be described below.

A method and apparatus for applying an uplink DCI to indicate uplink discontinuous resource allocation in accordance with an embodiment of the present invention will be described below with reference to the accompanying drawings.

4 shows a flow chart of a message transmission method for indicating uplink discontinuous resource allocation, in accordance with an embodiment of the present invention. A message transmission method for indicating uplink discontinuous resource allocation is usually performed by a base station. As shown in FIG. 4, in step S410, a message for indicating uplink discontinuous resource allocation is constructed. In accordance with an embodiment of the present invention, to avoid increasing the number of blind detections of the mobile station, a message of the same length as the DCI for downlink scheduling is used to indicate uplink discontinuous resource allocation. Information indicating the uplink discontinuous resource allocation and content identification information are carried in the message. The content identification information is used to identify that the message is a message for indicating uplink discontinuous resource allocation.

[35] Then, in step S420, the message is post-processed. Specifically, a CRC code is added to the message, and then channel coding, that is, convolutional code coding, is performed, and then rate matching can be performed. Modulation is performed after scrambling single or multiple DCIs of a single user or multiple users. These post-processing steps can be implemented by various existing methods, and will not be described herein.

[36] Next, in step S430, the scrambled DCI information is mapped to the physical resource of the PDCCH, and transmitted through the PDCCH.

[37] According to the above description of the new DCI according to an embodiment of the present invention, the internal identities information can be carried in the message at positions corresponding to the MCS and NDI in the DCI for downlink scheduling.

According to an embodiment of the present invention, the value of the content identification information may be set to a value different from the effective combination of the MCS value and the NDI value in the DCI. Given the above message with content identification information, those skilled in the art will appreciate a variety of methods for placing information indicating uplink discontinuous resource allocation into the message, a specific example of which will be given below.

[39] According to an embodiment of the present invention, when content identification information is set, a value of a position in the message corresponding to an NDI in a DCI for downlink scheduling may be set to be represented in the DCI The NDI value of the new data and the DCI in the message for downlink scheduling The value of the position corresponding to the MCS in the medium is set to any one of 29-31. Alternatively, a value of a location in the message corresponding to an NDI in a DCI for downlink scheduling may be set as an NDI value indicating retransmission data in the DCI, and the message is used in The value of the position corresponding to the MCS in the DCI of the downlink scheduling is set to any one of 0-28.

[40] According to another embodiment of the present invention, in order to conserve bit resources, content identification information may be carried in one of the highest three bits of the MCS in the message and the DCS for downlink scheduling. And the corresponding position of the NDI. For example, a value of a location in the message corresponding to an NDI in a DCI for downlink scheduling may be set to an NDI value representing retransmission data in a DCI for downlink scheduling, and the The value of the position in the message corresponding to the one of the highest three bits of the MCS in the DCI is set to zero.

[41] As an example, the following describes a new DCI message corresponding to MCS and NDI when a message having the same length as DCI 1 and DCI 2 for downlink scheduling is used to indicate uplink discontinuous resource allocation. The use of the remaining bits except the bits, including the placement of information indicating the allocation of uplink discontinuous resources.

5A and 5B show bit information formats of DCI 1 and DCI 2 of the LTE system, respectively. Here, the physical resource allocation information is used to indicate a downlink physical resource allocation and a downlink resource allocation manner. HARQ indicates the number of hybrid retransmission processes. RV is the redundancy version information. TPC is power control information (transmit power control). As shown in FIG. 5B, DCI 2 can support two transport blocks, so the signaling includes MCS, NDI and RV information of two transport blocks, and exchange information between two transport blocks (TB swap, Transport Block swap) o

6A-6C respectively show examples of bit information formats of DCIs for uplink discontinuous resource allocation, in accordance with an embodiment of the present invention. The length of the DCI message for uplink discontinuous transmission in Figs. 6A and 6B is the same as that of DCI 1, and the message length is the same as DCI 2 in Fig. 6C.

[44] In the example of FIG. 6A, 6 bits of the position corresponding to the 6-bit information of the MCS and the NDI of the DCI 1 are reserved in the DCI as the content identification information of the message, and are used to distinguish the uplink non-contiguous resource. Assigned DCI and DCI 1. In the new DCI, the remaining 6 bits are removed and the remaining bit information can be redefined. For example, the first 21 bits are used to indicate uplink discontinuous physical resource allocation information, and the next 5 bits are used to indicate MCS information, and 3 bits after reserved 5 bits (left oblique line padding) are used for cyclic shift of uplink pilots. (CS, cyclic shift) information, 1 bit after the reserved 1 bit (right oblique line padding) is used for NDI information, and the next 1 bit is used for channel quality indication (CQI) information, the last 2 bits Used for power control information (TPC). [45] In the example of FIG. 6B, only one bit (left oblique line padding) corresponding to the highest bit of the MCS of the DCI 1 and one bit (right oblique line padding) corresponding to the NDI are reserved for distinguishing between two types. DCI, the remaining bits can be redefined. For example, the first 25 bits are used to indicate uplink discontinuous physical resource allocation information, and the partial information is only one bit shorter than the resource allocation information bit length in the downlink DCI 1. The lower 4 bits corresponding to the remaining bits of the resource allocation in DCI 1 and the lower 4 bits corresponding to the MCS (i.e., the 4 bits to the right) constitute the MCS information in the new DCI, and the allocation of the remaining bits is the same as in FIG. 6A. In this embodiment, when the NDI indicates new data in DCI 1 and the MCS highest bit is 1, the DCI information is DCI for downlink scheduling, and the NDI indicates retransmission data and the highest MCS bit in DCI 1 When 0, the DCI information is DCI for uplink discontinuous resource allocation.

[46] In the example of FIG. 6C, 6 bits of the DCI corresponding to the MCS of the DCI 2 and the 6-bit information of the NDI are reserved for distinguishing the DCI and the DCI 1. In the new DCI, the remaining 6 bits are removed and the remaining bits can be redefined. In Figure 6C, the reserved bits of the first set of MCS and NDI in DCI 2 are reserved. Although not shown, any of the MCS and DCI bits in the DCI 2 can be reserved without limitation. For example, the second set of MCS and DCI bits in DCI 2 may also be reserved.

It should be understood that Figures 6A-6C show only illustrative examples, and those skilled in the art can envision more examples of bit information formats.

FIG. 7 shows a flow chart of a message receiving method according to an embodiment of the present invention. The message receiving method according to the present invention is usually performed by a mobile station. As shown in FIG. 7, in step S710, the mobile station performs a search in the time-frequency resource space in which the PDCCH is expected to be received, and receives a message from the PDCCH. The message transmitted on the PDCCH is a DCI message.

[49] Next, in step S720, the received message is pre-processed to obtain a source DCI message having the same length as the DCI used for downlink scheduling. The source DCI message may be a DCI for downlink scheduling, or may be a newly designed DCI for indicating uplink non-contiguous resource allocation in the present invention. The pre-processing is an inverse operation corresponding to post-processing of the message during message transmission, including demodulation, channel decoding, and CRC face correction. If the CRC check result is incorrect, the DCI information is discarded. If the CRC check result is correct, the content identification information is detected at a location in the source DCI message corresponding to the MCS and the NDI in the DCI for the downlink scheduling having the length to determine whether the source DCI message is A DCI message indicating uplink discontinuous resource allocation or downlink scheduling.

[50] According to an embodiment of the present invention, when the value of the detected internal information is different from the effective combination of the MCS value and the NDI value in the DCI for downlink scheduling, the source is determined The DCI message is a message for indicating uplink discontinuous resource allocation. According to an embodiment of the present invention, a value of a location in the source DCI message corresponding to the NDI in the DCI for downlink scheduling is an NDI value indicating new data in the DCI. And determining, in the source message, the value of the location corresponding to the MCS in the DCI as any one of 29-31, determining that the source DCI message is a DCI message for indicating uplink discontinuous resource allocation.

[52] According to an embodiment of the present invention, a value corresponding to an NDI in the DCI for downlink scheduling in the source DCI message is an NDI value indicating retransmission data in the DCI, And when the value of the location corresponding to the MCS in the DCI in the source message is any one of 0-28, the source DCI message is determined to be a DCI message for indicating uplink discontinuous resource allocation.

[53] According to an embodiment of the present invention, a location corresponding to one of the highest three bits of the MCS in the DCI for downlink scheduling and the NDI may also be in the source DCI message. The content identification information is detected.

[54] According to an embodiment of the present invention, a value of a location in the source DCI message corresponding to an NDI in the DCI for downlink scheduling is an NDI indicating retransmission data in the DCI. a value, and determining, in the source message, that the value of the location corresponding to the one of the highest three bits of the MCS in the DCI is 0, determining that the source message is a DCI for indicating uplink discontinuous resource allocation Message.

[55] When it is determined that the source DCI message is a DCI message indicating uplink discontinuous resource allocation, it proceeds to step S740. In step S740, information indicating the uplink non-contiguous resource allocation is obtained from the source DCI message. Regarding the distribution in the DCI message of the information of the uplink discontinuous resource allocation, a person skilled in the art can think of many design methods. For details, refer to the description in the above message sending method, and details are not described herein again. Then, the mobile station can allocate the uplink non-contiguous resources according to the obtained information of the non-contiguous resource allocation, and then send the corresponding PUSCH, as shown in step S750.

[56] When it is determined that the source DCI message is not a DCI message indicating uplink discontinuous resource allocation, it is determined in step S760 that the DCI message is a DCI message indicating downlink scheduling. Next, in step S770, the PDSCH of the N destination is connected.

FIG. 8 shows a schematic block diagram of a base station according to an embodiment of the present invention. As shown in FIG. 8, the base station 800 includes a message construction unit 810, a post-processing unit 820, and a transmission unit 830. The message construction unit 810 is configured to carry information indicating the uplink discontinuous resource allocation and content identification information in a message having the same length as the DCI used for downlink scheduling. Content The identification information indicates that the message is a message indicating an uplink discontinuous resource allocation. The post-processing unit 820 is configured to perform post-processing on the message constructed by the message construction unit 810 including insertion of a CRC code, channel coding, modulation, and the like. The transmitting unit 830 is configured to send the post-processed message by the post-processing unit 820 through the PDCCH. The message construction unit 810 is further configured to carry the content identification information at a location in the message corresponding to the MCS and NDI in the DCI for downlink scheduling.

According to an embodiment of the present invention, the message construction unit 810 may be configured to set the value of the content identification information to be different from the effective combination of the MCS value and the NDI value in the DCI for downlink scheduling. value.

According to an embodiment of the present invention, the message construction unit 810 may be further configured to carry content identification information in the message with the highest 3 bits of the MCS in the DCI for downlink scheduling. One of the positions corresponds to the NDI.

FIG. 9 shows a schematic block diagram of a mobile station in accordance with an embodiment of the present invention. As shown in FIG. 9, the mobile station 900 includes a receiving unit 910, a pre-processing unit 920, and a message parsing unit 930. The receiving unit 910 is configured to receive a message by using a PDCCH. The pre-processing unit 920 is configured to perform pre-processing including demodulation, channel decoding, and CRC check on the message received by the receiving unit 910 to obtain a source message of the same length as the DCI used for downlink scheduling. The message parsing unit 930 is configured to detect content identification information at a location corresponding to the MCS and the NDI in the DCI for downlink scheduling in the source message, to determine whether the source message is used to indicate uplink Messages for non-contiguous resource allocation. If it is determined that the source message is a message for indicating uplink discontinuous resource allocation, the message parsing unit 930 acquires information indicating the uplink discontinuous resource allocation from the source message.

[61] According to an embodiment of the present invention, the message parsing unit 930 may be further configured to use, when the value of the content identification information is different from the effective combination of the MCS value and the NDI value in the DCI for downlink scheduling. When the value is determined, the source message is determined to be a message indicating an uplink discontinuous resource allocation.

[62] According to an embodiment of the present invention, the message parsing unit 930 may be further configured to use one of the highest 3 bits corresponding to the MCS in the source message and the DCI for downlink scheduling. The internal information is detected at the location of the NDI.

[63] In the base station 800 and the mobile station 900, examples of the value of the content identification information can be referred to the description of the method according to the embodiment of the present invention.

[64] For further details of the operation of the base station 800 and the mobile station 900, reference may be made to the above. The description of the new DCI and method of the embodiment is not repeated here.

FIG. 10 shows a schematic block diagram of a wireless communication system in accordance with an embodiment of the present invention. The wireless communication system 1000 is composed of a mobile station 1100 and a base station 1200. The mobile station 1100 may be the mobile station 900 according to the embodiment of the present invention, and the base station 1200 may be the foregoing base station 800 according to an embodiment of the present invention. For the sake of brevity of the description, the mobile station 1100 and the base station 1200 and the communication therebetween will not be described in detail.

[66] Regarding the operation details of the above respective devices, reference may be made to various embodiments of the above corresponding methods, and will not be described in detail herein.

[67] In addition, each of the constituent modules and units in the above apparatus may be configured by software, firmware, hardware, or a combination thereof. The specific means or manner in which the configuration can be used is well known to those skilled in the art and will not be described herein. In the case of being implemented by software or firmware, a program constituting the software is installed from a storage medium or a network to a computer having a dedicated hardware structure, and the computer can execute various functions and the like when installing various programs.

The method and apparatus of the present invention may be used in a system such as LTE/LTE-A to indicate uplink discontinuous resource allocation, such as physical resource allocation indicating PUSCH, modulation and coding information, and the like. The control signaling used in the method and apparatus of the present invention is carried by the PDCCH with a length equal to the length of the control signaling DCI used to indicate downlink scheduling in the LTE system. By reading the special field of the signaling, the signaling is differentiated into control signaling indicating uplink discontinuous resource allocation and control signaling indicating downlink scheduling. The special field is the same as the location of the modulation coding information and the new data indication in the control signaling used by the LTE system to indicate downlink scheduling. With the method and apparatus of the present invention, the mobile station can effectively distinguish the control signaling for downlink scheduling and the uplink discontinuous resource allocation control signaling without increasing the number of blind detections of the PDCCH, thereby avoiding the complexity of the mobile station. The increase in degrees and the increase in the probability of false alarms.

The present invention also proposes a program product for storing an instruction code readable by a machine. When the instruction code is read and executed by a machine, the above-described method according to an embodiment of the present invention can be performed.

Accordingly, a storage medium for carrying a program product storing the above-described storage machine readable instruction code is also included in the disclosure of the present invention. The storage medium includes, but is not limited to, a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory, and the like.

[71] In the above description of specific embodiments of the present invention, features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, and other embodiments. Features in combination, or in place of features in other embodiments.

[72] It should be emphasized that the term "include/include" when used herein refers to a feature, element, step or group. The existence of a piece, but does not exclude the presence or addition of one or more other features, elements, steps or components.

Further, the method of the present invention is not limited to being performed in the chronological order described in the specification, and may be performed in other chronological order, in parallel or independently. Therefore, the order of execution of the methods described in the present specification does not limit the technical scope of the present invention.

The invention has been described above by way of a description of specific embodiments of the invention, but it should be understood that all the embodiments and examples described above are illustrative and not restrictive. Various modifications, improvements or equivalents of the invention may be devised by those skilled in the art. Such modifications, improvements or equivalents should also be considered to be included within the scope of the invention.

Claims

Claim

A method for transmitting a message for indicating uplink discontinuous resource allocation, comprising: carrying information indicating that uplink discontinuous resource allocation and content identification information are carried in downlink control information (DCI) for downlink scheduling In the message of the same length, where the content identifier information indicates that the message is a message for indicating uplink discontinuous resource allocation;

Performing post-processing on the message including inserting a cyclic redundancy check (CRC) code, channel coding, and modulation;

Transmitting the message through a physical downlink control channel (PDCCH),

The content identification information is carried in a location in the message corresponding to a modulation and coding scheme (MCS) and a new data indication (NDI) in the DCI for downlink scheduling.

The method according to claim 1, wherein the value of the content identification information is set to a value different from an effective combination of the MCS value and the NDI value in the DCI.

3. The method according to claim 2, wherein a value of a position in the message corresponding to the NDI in the DCI is set to an NDI value indicating new data in the DCI, and the message is The value of the position corresponding to the MCS in the DCI is set to any one of 29-31.

4. The method according to claim 2, wherein a value of a position in the message corresponding to the NDI in the DCI is set to an NDI value indicating retransmission data in the DCI, and the message is The value of the position corresponding to the MCS in the DCI is set to any one of 0-28.

The method according to claim 1, wherein the content identification information is carried in a location in the message corresponding to one of the highest three bits of the MCS in the DCI and the NDI.

6. The method according to claim 5, wherein a value of a location in the message corresponding to an NDI in the DCI is set to an NDI value representing retransmission data in the DCI, and the The value of the position in the message corresponding to the one of the highest three bits of the MCS in the DCI is set to zero.

7. A message receiving method, comprising:

Receiving a message through a physical downlink control channel (PDCCH); Performing pre-processing including demodulation, channel decoding, and CRC check on the message to obtain a source message having the same length as downlink control information (DCI) for downlink scheduling; corresponding to the message in the message The content identification information is detected at a position of a modulation coding mode (MCS) and a new data indication (NDI) in a DCI for downlink scheduling to determine whether the source message is a message indicating an uplink discontinuous resource allocation. ; as well as

If it is determined that the source message is a message for indicating uplink discontinuous resource allocation, information indicating an uplink discontinuous resource allocation is obtained from the source message.

8. The method according to claim 7, wherein, when the value of the content identification information is different from a valid combination of an MCS value and an NDI value in the DCI, determining that the source message is used to indicate an uplink non- A message for continuous resource allocation.

9. The method according to claim 8, wherein: a value of a location in the source message corresponding to an NDI in the DCI is an NDI value indicating new data in the DCI, and the source message is When the value of the corresponding position of the MCS in the DCI is any one of 29-31, it is determined that the source message is a message for indicating uplink discontinuous resource allocation.

10. The method according to claim 8, wherein: a value corresponding to an NDI in the DCI in the source message is an NDI value indicating retransmission data in the DCI, and the source message is When the value of the corresponding position of the MCS in the DCI is any one of 0-28, it is determined that the source message is a message for indicating uplink discontinuous resource allocation.

The method according to claim 7, wherein said content identification information is detected in a position corresponding to one of a highest three bits of the MCS in said DCI and an NDI in said source message.

12. The method according to claim 11, wherein: a value of a location in the source message corresponding to an NDI in the DCI is an NDI value indicating retransmission data in the DCI, and the source message is When the value of the location corresponding to the one of the highest three bits of the MCS in the DCI is 0, the source message is determined to be a message indicating an uplink discontinuous resource allocation.

13. A base station comprising:

a message construction unit configured to carry information indicating the uplink discontinuous resource allocation and content identification information in a message having the same length as downlink control information (DCI) for downlink scheduling, where the content identification information indicates The message is a message for indicating uplink discontinuous resource allocation;

a post-processing unit configured to perform post-processing including inserting a cyclic redundancy check (CRC) code, channel coding, and modulation on the message constructed by the message construction unit;

a sending unit, configured to send a medium through a physical downlink control channel (PDCCH) After the post-processing unit processed the message,

The message construction unit is further configured to carry the content identification information in a modulation coding mode (MCS) and a new data indication (NDI) in the DCI corresponding to the downlink scheduling in the message. The location.

The base station according to claim 13, wherein the message construction unit is further configured to set a value of the content identification information to a value different from an effective combination of an MCS value and an NDI value in the DCI.

15. The base station according to claim 13, wherein the message construction unit is further configured to carry the content identification information in the message with one of the highest three bits of the MCS in the DCI and the NDI Corresponding position.

16. A mobile station comprising:

a receiving unit, configured to receive a message by using a physical downlink control channel (PDCCH); and a pre-processing unit configured to perform pre-processing including demodulation, channel decoding, and CRC check on the message received by the receiving unit, to Obtaining a source message having the same length as downlink control information (DCI) for downlink scheduling;

a message parsing unit configured to detect content identification information at a location corresponding to a modulation and coding scheme (MCS) and a new data indication (NDI) in the DCI for downlink scheduling in the source message to determine Whether the source message is a message for indicating an uplink discontinuous resource allocation, and if the source message is determined to be a message for indicating an uplink discontinuous resource allocation, obtaining an indication of the uplink non-contiguous resource from the source message Information assigned.

17. The mobile station according to claim 16, wherein the message parsing unit is further configured to determine, when the value of the content identification information is different from a valid combination of an MCS value and an NDI value in the DCI, The source message is a message for indicating uplink discontinuous resource allocation.

18. The mobile station according to claim 16, wherein the message parsing unit is further configured to detect in the source message with a position in the DCI corresponding to one of the highest 3 bits of the MCS and the NDI The content identification information.