JP2020074545A - Method and device of allocating wireless resource - Google Patents

Abstract

To provide a method and a device for allocating a wireless resource to increase efficiency, performance, and adaptability of a wireless communication system.SOLUTION: In a device, a transmitter is configured to: determine, on the basis of an identification (ID) of a receiver at a present state, and according to a preset rule, a channel time-frequency location where a control channel associated with the present state of the receiver is located; and transmit, via the control channel at the channel time-frequency location, and to the receiver, data time-frequency location indication information, size of a time-frequency resource occupied by data, and a data modulation and coding scheme.EFFECT: The control channels used by the transmitter and the receiver can be flexibly allocated by needs to increase efficiency, performance, and adaptability of a wireless communication system.SELECTED DRAWING: Figure 1

Description

  The present invention relates to the field of communications, and more particularly to a method and apparatus for radio resource allocation.

  Global System for Mobile Communication (GSM), Code Division Multiple Access 2000 (CDMA), Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access) (WCDMA: Wideband Code Division Multiple Access). Current wireless communication systems, such as Evolution, etc., usually allocate control channels such as downlink control channels, paging channels, etc. in a relatively fixed manner, resulting in high system overhead, system design and spectrum usage. Control channel between different cells. However, since the terminal cannot avoid mutual interference and needs to perform a lot of blind detection, the terminal complexity, power consumption and processing time are increased.

  In addition, next-generation wireless communication systems (called 5G) are expected to support various application methods, such as bandwidth, delay, mobility, coverage, communication rate, reliability, energy efficiency, and number of users. It is necessary to efficiently support a large change in the index of. Therefore, current systems cannot meet the needs.

  INDUSTRIAL APPLICABILITY The present invention provides a method and apparatus for radio resource allocation, which can improve efficiency, performance and applicability of a radio communication system.

In a first aspect, there is provided a method of radio resource allocation, the method comprising: a transmitting side, based on an identifier ID in a current state of the receiving side, according to a preset rule; Determining the channel time frequency position where the control channel is located with respect to
The transmitting side transmits the data time-frequency position indication information, the size of the time-frequency resource occupied by the data, and the modulation and coding scheme of the data to the receiving side via the control channel on the channel time-frequency position. What to do
The data time frequency position indication information is used to indicate the data time frequency position where the data to be transmitted to the receiving side is located.

  Combining the first aspect, in an embodiment of the first aspect, the sender is based on an identifier ID in the current state of the receiver, the channel time in which the control channel for the current state of the receiver is located. Determining the frequency position includes the transmitting side determining the channel time frequency position based on the ID and cell level information in the current state according to the preset rule.

  Combining the first aspect and the above embodiment, in another embodiment of the first aspect, the method further comprises the sender sending the preset rule to the receiver. ..

  Combining the first aspect and the above embodiment, in another embodiment of the first aspect, the sender is based on the ID of the receiver in the current state according to a preset rule. Determining the time frequency position of the receiving side means that the transmitting side determines the channel time frequency position by a hash function or a modular function based on the ID of the receiving side in the current state. Including that.

Combining the first aspect and the above-mentioned embodiment, in another embodiment of the first aspect, the transmitting side is configured based on the ID of the receiving side according to a preset rule, Determining the channel time-frequency position means that the transmitting side determines the time-frequency position where the index channel of the receiving side is based on the ID of the receiving side according to a preset rule. When,
The transmitting side determines the time-frequency position of the channel where the control channel of the receiving side is based on the position indicated by the index channel;
including.

  Combining the first aspect and the above embodiment, in another embodiment of the first aspect, the transmitter is code division multiplexed if it determines that at least two receivers have the same channel time frequency position. The information in the control channels corresponding to the at least two receivers is simultaneously transmitted at the same channel time-frequency position by a method, a spatial multiplexing method, or a method of performing interference cancellation after superimposing.

  Combining the first aspect and the above embodiment, in another embodiment of the first aspect, the channel time frequency position includes a time offset and a frequency offset relative to a time frequency reference point.

  Combining the first aspect and the above embodiment, in another embodiment of the first aspect, the channel time frequency position is a physical resource unit position or a virtual resource unit position, and the data time frequency position is a physical resource unit position. The resource unit position or the virtual resource unit position.

  Combining the first aspect and the above embodiment, in another embodiment of the first aspect, the method comprises: the sender sending a hybrid automatic repeat request for data to the recipient via the control channel ( HARQ) is further included.

In a second aspect, there is provided a method of radio resource allocation, the method comprising:
The receiving side, based on the identifier ID in the current state, according to a preset rule, to determine the channel time frequency position where the control channel for the current state is located;
The receiving side, via the control channel on the channel time-frequency position, the data time-frequency position indication information transmitted from the transmitting side, the size of the time-frequency resource occupied by the data, and the modulation and coding method of the data. To receive
The data time frequency position indication information is used to indicate the data time frequency position where the data on the receiving side is located.

  Combining the second aspect, in one embodiment of the second aspect, the receiving side is based on the identifier ID in the current state, and according to a preset rule, the channel time in which the control channel relating to the current state is located. Determining the frequency position includes the receiving side determining the channel time frequency position of the control channel based on the ID and cell level information.

  Combining the second aspect and the above embodiment, in another embodiment of the second aspect, the method comprises the receiving side receiving the preset rule transmitted from the transmitting side. Further includes.

  Combining the second aspect and the above-mentioned embodiment, in another embodiment of the second aspect, the receiving side controls the current state according to a preset rule based on the identifier ID in the current state. Determining the channel time frequency location of the channel includes the receiving party determining the channel time frequency location by a hash function or a modular function based on the ID.

Combining the second aspect and the above-mentioned embodiment, in another embodiment of the second aspect, the receiving side is based on the ID and according to a preset rule, the channel time frequency of the control channel. Determining the position is
The receiving side, based on the ID, according to a preset rule, to determine the time-frequency position where the index channel is located;
The receiving side determines the channel time frequency position of the control channel based on the position indicated by the index channel.
including.

Combining the second aspect and the above embodiment, in another embodiment of the second aspect, the receiving side is provided with data transmitted from the transmitting side via the control channel on the channel time-frequency position. Receiving the time-frequency position indication information, the size of the time-frequency resource occupied by the data and the modulation and coding scheme of the data,
When the control channel on the channel time-frequency position includes the ID of the receiving side, the receiving side uses the data time-frequency position indicating information and the data based on the information in the control channel. Determining the size of the time-frequency resource and the modulation and coding scheme of the data, and if the control channel on the channel time-frequency position does not include the ID of the receiving side, the receiving side sleeps. If the ID of the receiving side is included in the control channel on the next channel time frequency position, the receiving side determines the transmitting side based on the information in the control channel on the next channel time frequency position. Determining the data time-frequency position indication information transmitted from, the size of the time-frequency resource occupied by the data, and the modulation and coding scheme of the data,
including.

  Combining the second aspect and the above embodiment, in another embodiment of the second aspect, if the control channel on the channel time frequency location includes the ID of the receiver, the receiver may: Determining the data time-frequency position indication information transmitted from the transmission side, the size of the time-frequency resource occupied by the data, and the modulation and coding scheme of the data based on the information in the control channel is When the control channel on the frequency position includes the ID of the receiving side and the IDs of other receiving sides, the receiving side uses the code division multiplexing method, the spatial multiplexing method, or the interference canceling method, Acquiring information on the control channel corresponding to the receiving side, the data time-frequency position indication information, the size of the time-frequency resource occupied by the data, and the modulation and coding method of the data Including that to establish the.

  Combining the second aspect and the above embodiment, in another embodiment of the second aspect, the channel time frequency position is a physical resource unit position or a virtual resource unit position, and the data time frequency position is a physical resource unit position. The resource unit position or the virtual resource unit position.

  Combining the second aspect and the above embodiment, and in another embodiment of the second aspect, if the channel time frequency position is a virtual resource unit position, the receiving side is configured with a virtual resource unit and a physical resource unit. The physical resource unit position where the control channel is located is determined based on the mapping relationship of, and when the data time frequency position is the virtual resource unit position, the receiving side maps the virtual resource unit and the physical resource unit. Based on the relationship, the physical resource unit position where the received data transmitted from the transmission side is located is determined.

  Combining the second aspect and the above embodiment, in another embodiment of the second aspect, the method comprises: the receiving side performing a hybrid automatic transmission of data transmitted from the transmitting side via the control channel. The method further includes receiving information regarding a retransmission request (HARQ).

  In a third aspect, an apparatus for allocating radio resources is provided and arranged to perform the method of any of the first aspect or possible embodiments of the first aspect above. Specifically, the apparatus comprises a unit for performing the method of the first aspect or any of the possible embodiments of the first aspect described above.

  In a fourth aspect, an apparatus for allocating radio resources is provided and arranged to perform the method of the second aspect or any of the possible embodiments in the second aspect. Specifically, the apparatus comprises a unit for carrying out the method of the second aspect or any of the possible embodiments of the second aspect.

  Based on the above technical solution, the method and apparatus for radio resource allocation according to the embodiment of the present invention is such that the transmitting side is based on the ID in the present state of the receiving side, The control channel used by the sender and the receiver can be flexibly assigned according to needs, by establishing the position and indicating the time-frequency position where the data to be transmitted is transmitted to the receiver through the control channel. And improve the efficiency, performance and applicability of the wireless communication system.

3 is a schematic flowchart of a method of radio resource allocation according to an embodiment of the present invention. FIG. 6 is a diagram showing time frequency positions in a method of radio resource allocation according to an embodiment of the present invention. FIG. 6 is a diagram showing a mapping relationship between PRUs and VRUs according to an embodiment of the present invention. 5 is another schematic flowchart of a method of radio resource allocation according to an embodiment of the present invention. FIG. 6 is a schematic block diagram of a transmission side of radio resource allocation according to an embodiment of the present invention. FIG. 6 is a schematic block diagram of a receiving side of radio resource allocation according to an embodiment of the present invention.

  In order to describe the embodiments of the present invention more clearly, the drawings required in the description of the embodiments or the prior art are briefly described above, and clearly the drawings described above are merely the present invention. Other embodiments of the present invention can be obtained based on these drawings with the mere assumption that the person skilled in the art does not make any creative effort.

  In the following, the technical solutions of the embodiments of the present invention will be described clearly and comprehensively with reference to the drawings of the embodiments of the present invention. But not all examples. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

  FIG. 1 shows a schematic flowchart of a method of radio resource allocation according to an embodiment of the present invention, the method 100 may be performed by a sender, which may be a base station, or In a direct communication scene between terminals, the transmission side is a transmission side device of the two terminals. As shown in FIG. 1, the method 100 includes S110 to S120.

  In S110, the transmitting side determines the channel time frequency position where the control channel for the current state of the receiving side is based on the identifier ID in the current state of the receiving side according to a preset rule.

  In S120, the transmitting side transmits to the receiving side via the control channel on the channel time-frequency position, the data time-frequency position indication information, the size of the time-frequency resource occupied by the data, and the modulation coding of the data. The data time frequency position indication information is used to indicate the data time frequency position where the data to be transmitted to the receiving side is located.

  In an embodiment of the present invention, a wireless communication system includes a downlink resource allocation, a paging channel, a random access response, an uplink resource request response (UL_GRANT), a hybrid automatic repeat request response (HARQ_ACK), an uplink power control, and the like. For the common downlink control channel, the control channel intended for one or several terminals is not reserved with a dedicated time-frequency resource, and the transmission side performs random access after cell search, The current state of the receiving side such that the system waiting for the random access response and accessing after the random access is completed is in the radio resource control_idle (RRC_IDLE) state, the service is activated and in the radio resource control_connected (RRC_CONNECTED) state, etc. On the basis of this, the sender further determines the identifier ID assigned to the corresponding system in the current state, for example, Random Access-Radio Network Temporary Identity (RA-RNTI), Temporary Cell-Radio. The current state of the channel on the receiving side is controlled on the basis of the Temporary Cell-Radio Network Temporary Identity (TC-RNTI), the Cell-Radio Network Temporary Identity (C-RNTI), etc. Determine the frequency position, that is, based on the time frequency position, the control channel for the current state. It is possible to find out the data time frequency position where the sender transmits the data to the receiver by the control information, and the sender can occupy the data through the control channel. Further information such as the size of the time frequency resource, the modulation and coding scheme (MCS) of the data, the Hybrid Automatic Repeat Request (HARQ), and other information such as redundant version information may be transmitted. It is possible.

  Therefore, in the radio resource allocation method according to the embodiment of the present invention, the transmitting side determines the time-frequency position of the control channel related to the current state of the receiving side based on the ID of the receiving side in the current state, and the control is performed. Through the channel, it indicates the time-frequency position where the data to be transmitted to the receiving side is located, and the control channel used by the transmitting side and the receiving side can be flexibly allocated according to needs, and Improve efficiency, performance and applicability.

  In S110, the transmitting side determines the channel time frequency position of the control channel regarding the receiving side current state based on the identifier ID in the receiving side current state. Specifically, if the receiving side is in a different state, the corresponding system assigns a different ID. For example, when the receiving side is a terminal device, that is, a user device and is in random access, the terminal may have an assigned ID of RA-RNTI or TC-RNTI, and, for example, the terminal is a system. If the terminal has already been accessed and is in the RRC_IDLE state, the assigned ID of the terminal may be C-RNTI. As an option, the receiving side may perform random access after the search and then wait for a random access response, and may be in the RRC_IDLE state when the system has been accessed, or in the RRC_CONNECTED state where the service has been activated, and the receiving side uses it. The ID assigned by the system may include RA-RNTI, TC-RNTI, C-RNTI, etc., but the present invention is not limited thereto.

  As an option, the sender can combine other information to determine the channel time-frequency position based on the receiver's ID, eg combine cell level information, cell level information is evolution Global Cell Identifier (ECGI: Evolved Cell Global Identifier), Cell Identifier (ECI: eNB ID & Cell ID), System Message-Radio Network Temporary Identifier (SI-RNTI: System Information-Radio Network Temporary Page-Identifier) P-RNTI: Paging-Radio Network Temporary Identity) or the like.

  In an embodiment of the present invention, other information such as cell level information may be combined based on the ID of the receiving side in the current state, and the transmitting side may set the channel time frequency position of the receiving side control channel. And the channel time-frequency position may be a position relative to a time-frequency reference point. For example, as shown in FIG. 2, the channel time-frequency position is the time-frequency reference point. 2 may be a time offset and a frequency offset that are opposite to each other. For example, the channel time frequency position may be the A position and the B position in FIG. Specifically, the transmitting side can determine the channel time frequency position relative to a certain time frequency reference point based on a preset rule after confirming the ID in the current state of the receiving side. As the rule set in advance, a hash function, for example, an MD5 hash function, a modular function, or another function may be used. Or a merging operation is performed on the ID of the receiving side and the correlated sequence of other cells to obtain the channel time frequency position relative to a certain time frequency reference point.

  Alternatively, as one embodiment, for example, the UE ID of a certain terminal is 0x36ED (16-bit numerical value), cell level information is combined, and the ECI of the cell is 28-bit numerical value 0x13432A01, for example, and a preset rule is set. Determines the time-frequency position by the MD5 hash function, and specifically, performs the exclusive OR (XoR) operation of the UE ID and the cell ECI to obtain the numerical value “0x13431CEC”. The hexadecimal MD5 hash function checksum is “692b3803read63124a96d618bc62b7513”, and one method is to extract two hexadecimal numbers at arbitrarily designated positions and calculate them with the modular 10 and modular 50, for example, based on a preset rule, the second highest position. Can take "0x69" That is, the decimal number 105 is calculated by the modular 10 to obtain the time offset t = 5, and the last second digit “0x13” is taken, that is, the decimal number 19 is calculated by the modular 50 and the frequency offset f = 19 is obtained, and it is obtained that the time frequency offset corresponding to the control channel of the terminal is (t, f) = (5,19), that is, the channel time frequency position. As an option, the transmitting side may confirm the channel time frequency position based on the ID of the receiving side according to another preset rule, for example, another hash function or a modular function. Not limited to that.

  In the embodiment of the present invention, the channel time frequency position is determined based on the ID of the receiving side or by combining other information according to a preset rule of the transmitting side, and the time frequency position of the receiving side is determined. It should be inside the resources allocated to the cell in which it is located (in the terminal-to-terminal direct communication situation, the time-frequency position should be inside the resources agreed by both parties). For example, the system radio frame is divided into subframes having a time length of 10 ms and 10 time lengths of 1 ms, the carrier width is 10 MHz, and 50 widths are excluded except for guard bands on both sides. Is a radio resource block (RB) of 180 KHz, the value of the time component t in the time frequency offset is 0-9, the frequency component f is 0-49, and the range of values of the channel time frequency position is Is (0,0) ≦ (t, f) ≦ (9,49).

  In the embodiment of the present invention, the transmission side determines the channel time frequency position where the control channel is located, based on the preset rule, based on the ID of the reception side or by combining other information, The preset rule may be set in advance on the transmitting side, and moreover, it is possible to transmit the preset rule to the receiving side by a plurality of methods, and the receiving side may set the preset rule. The corresponding time-frequency position can be determined on the basis of the existing rules, thereby determining the control channel on the receiving side. Specifically, for example, in the transmitting side, the base station may use a common channel, for example, a broadcast channel of the base station, or in a direct communication (D2D) between terminals, the transmitting side terminal may use a common channel. A channel, eg a discovery channel of the sending terminal, may be used, the sending side informs all the receiving side, ie the terminals, and each terminal receives a similar preset rule. To do. As an option, the base station informs the one or several terminals by a dedicated message that is valid only for some or some terminals, for example, a random access response message, an RRC connection establishment response message, etc., and thereby differs. The terminal can determine the time-frequency position using different preset rules, or in the direct communication (D2D) scene between the terminals, one or more selections are made by the transmitting terminal. Different preset rules may be used by different receiving sides according to the signaling transmitted to the designated receiving terminal, and the embodiment of the present invention is not limited thereto.

  As an option, the sender may change the ID of the receiver, or change a preset rule for calculating the time frequency position by the ID, notify the receiver by a method such as signaling, or receive The side may change its own ID and notify the sender by random access, an uplink scheduling request or other message and accordingly calculate the time frequency position at the next valid position. Fix it.

  In an embodiment of the present invention, the sender may combine the information based on the current ID of the receiver, or may combine other information to determine the channel time frequency position where the control channel is located and, as an option, As shown in FIG. 2, the transmitting side may control the control channel such as the A position and the B position shown in FIG. 2 based on the time offset and the time frequency position including the frequency offset relative to a certain time frequency reference point. Can directly calculate the channel time-frequency position, and optionally the position of the index channel can be directly determined based on the time offset and the frequency offset, ie shown in FIG. The A position and the B position are index channels and the positions indicated in the index information based on the index information of the index channels. There confirm that the channel time-frequency location to location of the control channel, examples of the present invention is not limited thereto.

  In the embodiment of the present invention, the channel time frequency position may be determined by combining ID or other information, and the control channel position may be directly determined as an option, or the index channel position may be determined first. The index channel or control channel may monopolize the time-frequency resource of the position, for example, if the time-frequency resource of the position is not allocated, it may be used directly, and may already be allocated to the data channel. , It may be used in a puncturing manner on the data channel and may share time frequency resources with other channels (eg downlink data channels), eg code division. , Spatial partitioning (beamforming or some spatial data stream) , The codeword or data layer), or common time frequency resources in a manner of performing interference cancellation after direct superposition (superposition), the present invention is not limited thereto.

  In S120, the transmitting side transmits data time frequency position indication information, the size of the time frequency resource occupied by the data, and the data modulation and coding method to the receiving side via the control channel on the channel time frequency position. The data time frequency position indication information for transmission is used to indicate the data time frequency position where the data to be transmitted is transmitted to the receiving side. As an option, the transmitting side can also transmit information about the hybrid automatic repeat request (HARQ), for example, redundant version (RV) information, to the receiving side via the control channel. Is not limited to that.

  As an option, when determining the time-frequency position where the control channel or index channel of the receiving side is located, the transmitting side performs code division multiplexing if the transmitting side determines that at least two receiving sides have the same channel time-frequency position. Schemes, or spatial multiplexing schemes, eg by beamforming, or by using different spatial data streams or data layers, eg different codewords for precoding based on codebooks. (Codeword) is used to distinguish terminals in different spatial positions, or the transmitter directly superimposes signals belonging to different receivers, and then the receiver cancels the interference of the at least two signals. Side control channel or index X-channels share the same channel time-frequency location to transmit information, and embodiments of the present invention are not so limited.

  In the embodiment of the present invention, the transmitting side determines the channel time-frequency position based on the ID of the receiving side according to a preset rule, and transmits the data based on the control channel on the channel time-frequency position. The location of the existing data time-frequency position is determined, and these two types of time-frequency positions may be absolute time-frequency positions, and the absolute time-frequency position is also referred to as a physical resource unit (PRU). Even if it is called a logic resource after excluding time-frequency resources that are not involved in allocation (for example, resources for common channels, or resources that are not used for reasons such as avoiding interference with adjacent cells) Well, the logic resource is a virtual source unit (VRU). source Unit) also called. There is a specific mapping relationship between the PRU and the VRU in one or more cells (which is the time-frequency resource pool on the transmitting side in the terminal direct communication scene), and such a mapping relationship is within the cell. All terminals may match, may not match, or may partially match. For the matching part in all terminals in the cell, the base station on the transmitting side (in the direct communication scene between the terminals, that is, the terminal on the transmitting side) uses the common channel for all It is possible to notify the receiving side, that is, the terminal, and as an option, when there is no match in different terminals, the base station (in the direct communication scene between the terminal and the terminal, that is, the transmitting side terminal), The one or several terminals may be notified by a dedicated message valid for only one or some terminals (eg, random access response, RRC connection establishment response, etc.), but the embodiment of the present invention is not limited thereto. ..

  In the embodiment of the present invention, the channel time frequency position indicating the control channel position and the data time frequency position indicating the data position can both include two situations, PRU and VRU, and the transmitting base station. , (Or the terminal on the transmitting side in the direct communication scene of the terminal) notifies the receiving side of which method can be specifically used by a common message or a dedicated message. When the two types of time-frequency positions use VRU, the transmitting side can determine the VRU corresponding to the PRU based on the mapping relationship between the PRU and the VRU, and transmits the VRU to the receiving side. On the other hand, the receiving side can estimate and receive a reliable physical time frequency position based on the mapping relationship between PRU and VRU.

  Specifically, the mapping relationship between PRU and VRU is as shown in FIG. The transmitting base station (or the transmitting terminal in the direct communication scene of the terminal) can indicate this mapping relationship in a plurality of ways, for example, not (or participate) in the mapping in a certain manner. The PRU number is transmitted, and the specific method is as follows.

  i, PRU (0,0), (0,3), (0,4), etc. are ahead in time and the frequency is later.

  ii, PRU (0,0), (4,0), (6,0) ... are frequencies first and time later.

  iii. It is possible to transmit a regular PRU and an irregular PRU, respectively, and to encode the regular PRU (for example, only the first PRU position, frequency interval, time interval, number of regular PRUs, etc.). It does not have to transmit the location of every PRU) and saves the transmission overhead, where a regular PRU here is a PRU transmitted according to a fixed time interval, as shown in FIG. On the contrary, an irregular PRU refers to a PRU whose transmission time interval is not fixed. In addition, as an option, the rule or irregular PRU of transmission here may be transmission of usable PRU or transmission of unusable PRU. May be selected by determining the transmission amount of the usable PRU and the unusable PRU, and if either the usable PRU or the unusable PRU has a small transmission amount, To transmit.

  Two-dimensional encoding is performed on the PRU by a method such as iv, bitmap (bitmap) or compressed bitmap, and the PRU here may be a usable PRU or an unusable PRU. The specific selection method can be selected by determining the transmission amount, and the embodiment of the present invention is not limited to this.

  Therefore, in the radio resource allocation method according to the embodiment of the present invention, the transmitting side determines the time-frequency position of the control channel related to the current state of the receiving side based on the ID of the receiving side in the current state, and the control is performed. Through the channel, it indicates the time-frequency position where the data to be transmitted to the receiving side is located, and the control channel used by the transmitting side and the receiving side can be flexibly allocated according to needs, and Improve efficiency, performance and applicability.

  The method of radio resource allocation according to the embodiment of the present invention is described in detail from the transmitting side by combining FIGS. 1 to 3 above, and by combining FIG. 4 below from the receiving side of the present invention. A wireless resource allocation method according to an embodiment will be described.

  FIG. 4 shows a schematic flowchart of a method 200 of radio resource allocation according to an embodiment of the present invention, which method 200 may be implemented by a receiver, which is a user device, eg a UE. May be As shown in FIG. 4, the method 200 includes S210 to S220.

  In S210, the receiving side determines the channel time frequency position where the control channel regarding the current state is based on the identifier ID in the current state and according to a preset rule.

  In S220, the reception side transmits the data time frequency position indication information transmitted from the transmission side via the control channel on the channel time frequency position, the size of the time frequency resource occupied by the data, and the data modulation. The coding method is received, and the data time frequency position indication information is used to indicate the data time frequency position where the data on the receiving side is located.

  Therefore, in the radio resource allocation method according to the embodiment of the present invention, the receiving side determines the time-frequency position of the control channel related to the current state of the receiving side based on the ID in the current state, and then determines the control channel. Through this, the transmitting side determines the time-frequency position where the data to be transmitted to the receiving side is located, and the control channels used by the transmitting side and the receiving side can be flexibly allocated according to needs, and wireless communication can be performed. Improve system efficiency, performance and applicability.

  In S210, the receiving side determines the channel time frequency position where the control channel regarding the current state is based on the identifier ID in the current state and according to a preset rule. Specifically, the recipients are in different states and the system will assign different IDs accordingly. For example, when the receiving side is a terminal device, that is, a user device, it is in random access, the assigned ID of the terminal may be RA-RNTI or TC-RNTI, and the terminal is already in the system. When accessed and in the RRC_IDLE state, the terminal may have the assigned ID of C-RNTI. As an option, the receiving side may perform random access after the search and then wait for a random access response, and may be in the RRC_IDLE state when the system has been accessed, or in the RRC_CONNECTED state where the service has been activated, and the receiving side uses it. The ID assigned by the system may include RA-RNTI, TC-RNTI, C-RNTI, etc., but the present invention is not limited thereto.

  As an option, the receiving side can combine other information based on its own ID to determine the channel time frequency position, for example, combine the cell level information, specifically, the cell level information. May be an evolved global cell identifier ECGI, a cell identifier ECI, SI-RNTI, P-RNTI, or the like.

  In an embodiment of the present invention, the receiving side can determine the channel time frequency position of the receiving side control channel based on the ID in the current state or by combining other information. The position may be a position relative to a time frequency reference point, for example, as shown in FIG. 2, the channel time frequency position may include a time offset and a frequency offset relative to the time frequency reference point. , For example, the channel time-frequency position may be position A and position B in FIG. Specifically, the receiving side can determine the channel time-frequency position relative to a certain time-frequency reference point based on a preset rule after determining its own ID in the current state. As an option, the preset rule may be a hash function, for example, an MD5 hash function, a modular function, or another function, for the ID of the receiving side. Processing is performed, or a merging operation is performed on the ID of the receiving side and the correlated sequence of other cells, whereby a channel time frequency position relative to a certain time frequency reference point is obtained.

  Alternatively, as one embodiment, the channel time frequency position is determined based on the ID of the receiving side, for example, the UE ID of the terminal is 0x36ED (16-bit numerical value), and the preset rule is MD5. The time-frequency position can be determined by a hash function. Specifically, the result of multiplying the character string "36ED" by the MD5 hash function checksum is "a7be1684049bb84bda24ae53b90c0348", and one method is to arbitrarily specify it. It is possible to take out two hexadecimal numbers at the specified positions and calculate them with the modular 10 and the modular 50, and for example, take the second leading position "0xa7" based on a preset rule. 167 is calculated by the modular 10 and time offset t = 7 The second offset "0x48" is obtained, that is, the decimal number 72 is calculated by the modular 50 to obtain the frequency offset f = 22, and the time frequency offset corresponding to the control channel of the terminal is (t, f). = (7,22), that is, the channel time frequency position. As an option, the receiving side determines the channel time frequency position based on the ID according to another preset rule, for example, another hash function or a modular function, and the preset rule is However, the present invention is not limited to this, and the preset rule may be transmitted to the receiving side by the transmitting side.

  Specifically, the receiving side may combine the information based on the ID or other information according to a preset rule, determine the channel time frequency position where the control channel is located, and set the preset rule. May be preset to the receiving side, or the preset rules may be transmitted to the receiving side by the transmitting side by a plurality of methods. Specifically, for example, the transmitting base station can use a common channel, for example, a broadcast channel of the base station, or in a direct communication (D2D) between terminals, the transmitting terminal A common channel, such as the discovery channel of the sending terminal, may be used, where the sending side informs all receiving side, i.e. the terminals, and each terminal follows a similar preset rule. To receive. As an option, the base station informs the one or several terminals by a dedicated message that is valid only for some or some terminals, for example, a random access response message, an RRC connection establishment response message, etc., and thereby differs. The terminal may determine the time-frequency position using different preset rules, or in the direct communication (D2D) scene between the terminals, the transmitting terminal may have one or more terminals. The signaling to the selected receiving terminal may be transmitted, and different receiving sides may use different preset rules, and the embodiment of the present invention is not limited thereto.

  As an option, the sender may change the ID of the receiver, or change a preset rule for calculating the time frequency position by the ID, notify the receiver by a method such as signaling, or receive The side may change its own ID and notify the sender by random access, an uplink scheduling request or other message and accordingly calculate the time frequency position at the next valid position. Fix it.

  In the embodiment of the present invention, the determined channel time frequency position is assigned to the cell in which the receiving side is located, based on the receiving side preset rule, based on the ID, or by combining other information. It should be inside the resource (in the case of direct communication between terminals, the time-frequency position should be inside the resource agreed by both parties). For example, a system radio frame is divided into subframes having a time length of 10 ms and 10 time lengths of 1 ms, a carrier width is 10 MHz, and 50 guard bands on both sides are excluded. In the case of a radio resource block (RB: resource block) having a width of 180 KHz, the value of the time component t in the time frequency offset is 0-9, the frequency component f is 0-49, and the value of the channel time frequency position is The range is (0,0) ≦ (t, f) ≦ (9,49).

  In the embodiment of the present invention, the receiving side determines the channel time frequency position where the control channel is located based on the ID in the current state, and as an option, as shown in FIG. Based on the time frequency position including the time offset and the frequency offset relative to the reference point, it is possible to directly determine the channel time frequency position where the control channel is located, such as the A position and the B position shown in FIG. As an option, it is possible to directly determine the position of the index channel based on the time offset and the frequency offset, that is, the A position and the B position shown in FIG. 2 are the index channel, and the index information of the index channel is used. Based on this, the position indicated in the index information is the channel time frequency where the control channel is located. To confirm that it is the location, embodiments of the present invention is not limited thereto.

  In an embodiment of the present invention, the receiver may combine the information based on the ID in the current state or other information to determine the channel time frequency position and, as an option, a plurality of receivers can use the same position. If there is a possibility that it will be fixed, that is, the time offset and the frequency offset that are fixed by multiple receivers are the same, and the position of the fixed control channel is the same position, those that have fixed similar results are confirmed. All of the receivers may search for the control channel at the time-frequency position, or the control channel indicated by the index channel determines which receiver the control channel belongs to. Specifically, the ID information of the terminal may be included in the control channel, and the receiving side determines which receiving side the control channel specifically corresponds to based on the ID information. For any one of these receivers that has determined a similar time-frequency position, if there is no information corresponding to the receiver at the time-frequency position, the receiver may enter a sleep state, After reaching the next time frequency position (for example, the position corresponding to the next radio frame), the receiving side can perform the search again, and the receiving side can find the ID information corresponding to itself on the control channel. Then, it can be determined that the control channel is the control channel corresponding to the receiving side.

  As an option, when the channel time frequency position is determined by combining information or other information based on the receiver ID, and the control channel on the time frequency position includes ID information of other receivers, that is, a plurality of When the receivers of the above determine the same time-frequency position, these receivers may share the time-frequency resource, and by the code division multiplexing method or the spatial multiplexing method, for example, beamforming, Alternatively, different spatial data streams or data layers are used to distinguish between terminals in different spatial positions, for example by using different codewords of precoding based on codebooks, or When directly superimposing signals belonging to different receivers On the other hand, the receiving side can cancel the interference, and by the above method, the receiving side can determine the control channel corresponding to the receiving side itself and acquire the information in the control channel.

  In S220, the reception side transmits the data time / frequency position indication information transmitted from the transmission side by the control channel corresponding to itself at the determined channel time / frequency position, the size of the time / frequency resource occupied by the data, and the data. And the data time frequency position indication information is used to indicate the data time frequency position where the data on the receiving side is located. As an option, the receiving side can receive the HARQ correlation information of the transmission data block, for example, redundant version (RV) information via the control channel, and the embodiment of the present invention is not limited thereto.

  In the embodiment of the present invention, according to a preset rule on the receiving side, based on the ID, or by combining other information to determine the channel time frequency position, based on the control channel on the channel time frequency position, The data time-frequency position where the transmission data is located is determined, and these two types of time-frequency positions may be absolute time-frequency positions, which are also referred to as physical resource units PRU and are assigned for allocation. It may be a logic resource after removing unrelated time-frequency resources (for example, a resource for a common channel or a resource that is not used due to avoiding interference with an adjacent cell), and the logic resource Is also called a virtual resource unit VRU. There is a specific mapping relationship between the PRU and the VRU in one or more cells (which is the time-frequency resource pool of the transmitting side in the direct communication scene with the terminal), and such mapping relationship is May match, may not match, or may partially match. For the matching part in all terminals in the cell, the transmitting base station (in the terminal-to-terminal direct communication scene, that is, the transmitting terminal) uses the common channel for all receiving sides. That is, the base station (in the terminal-to-terminal direct communication scene, that is, the terminal on the transmitting side) is present or some in the case where the terminals can be notified and, as an option, the terminals do not match in different terminals. The one or several terminals may be notified by a dedicated message that is valid only for the terminal, such as a random access response or an RRC connection establishment response, and the embodiments of the present invention are not limited thereto.

  In the embodiment of the present invention, the channel time frequency position indicating the control channel position and the data time frequency position indicating the data position can both include two situations, PRU and VRU, and the transmitting base station. , (Or the terminal on the sending side in the direct communication scene with the terminal) notifies the receiving side of which method can be specifically used by a common message or a dedicated message. When the two types of time-frequency positions use VRU, the receiving side can estimate and receive a reliable physical time-frequency position based on the mapping relationship between PRU and VRU.

  Specifically, the mapping relationship between PRU and VRU is as shown in FIG. The transmitting base station (or the transmitting terminal in the terminal direct communication scene) can indicate such a mapping relationship in a plurality of ways, for example, a PRU that does not participate in (or is involved in) mapping in a certain manner. A number, to which the receiver can determine a specific time-frequency position based on the PRU number that is not (or is) involved in the received mapping, in particular the sender For transmitting the PRU numbers that are not (or are) involved in the mapping in a certain manner, it is sufficient to refer to the above-mentioned embodiment of the transmitting side, and therefore further description is omitted here.

  In each embodiment of the present invention, the number of each process does not mean the order before and after the execution, and the execution order of each process should be determined by its function and its own logic. It does not limit the implementation process of the embodiment.

  Therefore, in the method of radio resource allocation according to the embodiment of the present invention, the receiving side determines the time-frequency position of the control channel related to the current state of the receiving side based on the ID in the current state, and via the control channel. Thus, the time-frequency position where the data to be transmitted to the transmitting side and the receiving side is located can be determined, and the control channels used by the transmitting side and the receiving side can be flexibly assigned according to needs, and Improve efficiency, performance and applicability.

  1 to 4 are combined to describe in detail the method of radio resource allocation according to the embodiment of the present invention. In the following, FIG. 5 to FIG. 6 are combined to describe the radio resource allocation according to the embodiment of the present invention. The assigning device will be described.

  As shown in FIG. 5, the transmitting side 300 of the radio resource allocation according to the embodiment of the present invention includes a determining unit 310 and a transmitting unit 320.

  The determination unit 310 is configured to determine the channel time frequency position where the control channel for the current state of the receiving side is based on the identifier ID in the current state of the receiving side according to a preset rule. It

  The transmission unit 320 transmits the data time frequency position indication information, the size of the time frequency resource occupied by the data, and the modulation and coding scheme of the data to the receiving side by the control channel on the channel time frequency position. The data time frequency position indication information is used to indicate the data time frequency position where the data to be transmitted to the receiving side is located.

  Therefore, as the transmitter of the radio resource allocation in the embodiment of the present invention, the transmitter determines the time-frequency position of the control channel regarding the current state of the receiver based on the ID of the current state of the receiver, and Through the control channel, it indicates the time-frequency position where the data to be transmitted to the receiving side is located, so that the control channel used by the transmitting side and the receiving side can be flexibly allocated according to needs, and the wireless communication system Improve the efficiency, performance and applicability of.

  As an option, the determination unit 310 is specifically configured to determine the channel time frequency position according to the preset rule based on the ID and cell level information in the current state. ..

  Optionally, the sending unit 320 is further configured to send the preset rule to the recipient.

  As an option, the determination unit 310 is specifically configured to determine the channel time frequency position by a hash function or a modular function based on the ID of the receiving side in the current state.

  As an option, the determining unit 310 specifically determines the time-frequency position where the index channel of the receiving side is located, based on the ID of the receiving side, according to a preset rule, and determines the index channel. Is configured to determine the time-frequency position of the control channel of the receiving side on the channel.

  As an option, the transmitting unit 320 may use the code division multiplexing method, the spatial multiplexing method, or the superimposing and then interfering signals when the transmitting side determines that at least two receiving sides have the same channel time frequency position. The removing scheme is further configured to simultaneously transmit information in the control channels corresponding to the at least two receivers at the same channel time-frequency position.

  Optionally, the channel time frequency location includes a time offset and a frequency offset relative to a time frequency reference point.

  As an option, the channel time-frequency position is a physical resource unit position or a virtual resource unit position, and the data time-frequency position is a physical resource unit position or a virtual resource unit position.

  Optionally, the sending unit 320 is further configured to send information regarding a hybrid automatic repeat request (HARQ) of data to the recipient via the control channel.

  It should be noted that the transmitter 300 of the radio resource allocation according to the embodiment of the present invention can correspond to the method 100 in the embodiment of the present invention. The operation and / or function is for realizing the corresponding flow of each method in FIG. 1, and the description is omitted for brevity.

  Therefore, as the transmitter of the radio resource allocation in the embodiment of the present invention, the transmitter determines the time-frequency position of the control channel regarding the current state of the receiver based on the ID of the current state of the receiver, and Through the control channel, it indicates the time-frequency position where the data to be transmitted to the receiving side is located, and the control channel used by the transmitting side and the receiving side can be flexibly assigned according to needs, and wireless communication can be performed. Improve system efficiency, performance and applicability.

  As shown in FIG. 6, the receiving side 400 of the radio resource allocation according to the embodiment of the present invention includes a determining unit 410 and a receiving unit 420.

  The determining unit 410 is configured to determine the channel time frequency position where the control channel for the current state is based on the identifier ID in the current state and according to a preset rule.

  The receiving unit 420 receives, via the control channel on the channel time-frequency position, the data time-frequency position indication information transmitted from the transmitting side, the size of the time-frequency resource occupied by the data, and the data modulation and coding scheme. And the data time frequency position indication information is used to indicate the data time frequency position where the data on the receiving side is located.

  Therefore, the receiving side of the radio resource allocation in the embodiment of the present invention determines the time-frequency position of the control channel related to the receiving side current state based on the ID in the current state, and via the control channel, The time-frequency position where the data to be transmitted to the transmission side and the reception side is fixed is defined, and the control channel used by the transmission side and the reception side can be flexibly allocated according to needs, and the efficiency of the wireless communication system, Improve performance and applicability.

  As an option, the determination unit 410 is specifically configured to determine the channel time frequency position of the control channel based on the ID and cell level information.

  Optionally, the receiving unit 420 is further configured to receive the preset rule sent from the sender.

  As an option, the determining unit 410 is specifically configured to determine the channel time frequency position by a hash function or a modular function based on the ID.

  As an option, the determining unit 410 specifically determines the time-frequency position where the index channel is located based on the ID according to a preset rule, and based on the position indicated by the index channel, It is configured to determine the channel time frequency position of the control channel.

  As an option, the receiving unit 420 may specifically specify the data time frequency position based on information in the control channel when the control channel on the channel time frequency position includes the ID of the receiving side. When the instruction information, the size of the time-frequency resource occupied by the data and the modulation and coding scheme of the data are determined, and the control channel on the channel time-frequency position does not include the ID of the receiving side, the sleep When the state is entered and the control channel on the next channel time-frequency position includes the ID of the reception side, the transmission side on the basis of the information in the control channel on the next channel time-frequency position. It is configured to determine the data time-frequency position indication information transmitted from the device, the size of the time-frequency resource occupied by the data, and the modulation and coding scheme of the data. That.

  As an option, the receiving unit 420 may specifically use the code division multiplexing method or the space when the control channel on the channel time-frequency position includes the ID of the receiving side and the IDs of other receiving sides. Information on the control channel corresponding to the receiving side is acquired by a multiplexing method or an interference cancellation method, and the data time-frequency position indication information, the size of the time-frequency resource occupied by the data, and the modulation code of the data are acquired. It is configured to determine the activation method.

  As an option, the channel time-frequency position is a physical resource unit position or a virtual resource unit position, and the data time-frequency position is a physical resource unit position or a virtual resource unit position.

  As an option, when the channel time frequency position is a virtual resource unit position, the determination unit 410 may specify the physical resource where the control channel is located based on the mapping relationship between the virtual resource unit and the physical resource unit. When the unit position is determined and the data time frequency position is the virtual resource unit position, the physical resource where the data transmitted from the transmission side is received is based on the mapping relationship between the virtual resource unit and the physical resource unit. Configured to determine unit position.

  Optionally, the receiving unit 420 is further configured to receive, via the control channel, information regarding a hybrid automatic repeat request (HARQ) of the data transmitted from the sender.

  It should be noted that the receiver 400 of the radio resource allocation according to the embodiment of the present invention corresponds to the method 200 in the embodiment of the present invention, and the above and other operations or / or operations of each unit in the receiver 400 of the radio resource allocation are performed. The function is to realize the corresponding flow of each method in FIG. 4, and further explanation is omitted for brevity.

  Therefore, the receiving side of the radio resource allocation in the embodiment of the present invention determines the time-frequency position of the control channel related to the receiving side current state based on the ID in the current state, and then transmits the transmitting side via the control channel. By determining the time-frequency position where the data to be transmitted to the receiving side is located, the control channel used by the transmitting side and the receiving side can be flexibly allocated according to needs, and the efficiency, performance and performance of the wireless communication system can be improved. Improve applicability.

  It is to be understood that each exemplary unit and algorithm step described in the embodiments disclosed herein may be combined and implemented using electronic hardware, or a combination of computer software and electronic hardware. Any trader can understand. Whether these functions are implemented in the form of hardware or software depends on the specific application of the technical proposal and design constraints. Persons of ordinary skill in the art may implement the described functionality using different methods for each particular application, but such an implementation should not be considered beyond the scope of the present invention.

  Those skilled in the art can refer to the corresponding flows of the above method embodiments for the specific operation of the systems, devices and units described above, and for convenience of explanation and brevity here. Therefore, further explanation is omitted.

  In some embodiments provided herein, the disclosed systems, devices and methods may be implemented in other ways. For example, the embodiments of the apparatus described above are merely exemplary and, for example, the division of the units is merely a functional division of logic, and in practice, other divisions may occur. For example, multiple units or components may be integrated or assembled into another system, or some technical features may be omitted or not implemented. Also, the mutual couplings or direct couplings or communicative connections of each component, which are expressly or discussed, are connected by the indirect coupling or communication of some interfaces, devices or units. , Electrical, mechanical, or other form.

  The units described above as separate components may or may not be physically separate. Components shown as units may or may not be physical units. It may be arranged at one place or distributed to a plurality of network units. Depending on the actual needs, some or all of the units may be selected to realize the purpose of the technical solution of this embodiment.

  Also, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may be a single unit, and two or more units may be integrated into one unit. You may.

  The functions may be stored in a computer-readable storage medium when the functions are realized by a software function unit and are sold or used as an independent product. As a result, the technical solution of the present invention can be realized, in other words, the part that contributes to the prior art in the form of a software product, the computer software product is stored in a storage medium, and a computer device (a personal computer, a server, or a network device). Etc.) may include a plurality of instructions for performing the method of all or part of each embodiment of the present invention. The above-mentioned storage medium stores various program codes such as a USB memory, a mobile storage medium, a read-only memory (ROM: Read-Only Memory), a random access storage device (RAM: Random Access Memory), a magnetic disk or a compact disk. Including media that can.

  What has been described above is merely a specific embodiment of the present invention, the present invention is not limited thereto, and within the scope disclosed in the present invention by a person skilled in the art, easily conceivable variations or All permutations should be included within the scope of the present invention. Therefore, the scope of the present invention should be subject to the appended claims.

Claims (10)

A method of radio resource allocation, comprising:
The receiving side, based on the index information of the index channel, to determine that the time frequency position indicated by the index information is the channel time frequency position where the control channel is located,
The receiving side receives, via the control channel on the channel time-frequency position, data time-frequency position indication information, a size of the time-frequency resource occupied by the data, and a modulation and coding scheme of the data,
And the data time frequency position indication information is used to indicate the data time frequency position where the data on the receiving side is located,
The method of radio resource allocation, characterized in that The receiving side further includes determining a time frequency position of the index channel based on a time offset and a frequency offset of a time frequency reference point,
The method of radio resource allocation according to claim 1, characterized in that. The receiving side may further determine a channel time frequency position of a control channel corresponding to the receiving side from a channel time frequency position of the control channel based on an identifier (ID) in a current state. Including,
The method of radio resource allocation according to claim 1 or 2, characterized in that. The receiving side, the receiving side, based on the index information of the index channel, to determine that the time frequency position indicated by the index information is the channel time frequency position where the control channel is located,
The receiving side, based on the identifier (ID) in the current state, uses a modular function to determine the channel time-frequency position where the control channel corresponding to the receiving side exists from the channel time-frequency position where the control channel is located. Further including confirming,
The method of radio resource allocation according to claim 1 or 2, characterized in that. The receiving side, the receiving side, based on the index information of the index channel, to determine that the time frequency position indicated by the index information is the channel time frequency position where the control channel is located,
The receiving side, based on the identifier (ID) in the current state and the cell level information, determines the channel time frequency position where the control channel corresponding to the receiving side is located from the channel time frequency position where the control channel is located. Further including confirming,
The method of radio resource allocation according to claim 1 or 2, characterized in that. The channel time frequency position is a physical resource unit position or a virtual resource unit position,
The data time frequency position is a physical resource unit position or a virtual resource unit position,
The method of radio resource allocation according to any one of claims 1 to 5, characterized in that: If the channel time frequency position is a virtual resource unit position, the receiving side, based on the mapping relationship between the virtual resource unit and the physical resource unit, to determine the physical resource unit position where the control channel is located,
When the data time frequency position is a virtual resource unit position, the receiving side is based on the mapping relationship between the virtual resource unit and the physical resource unit, the physical resource unit of the location to receive the data transmitted from the transmitting side. To fix the position,
including,
The method of radio resource allocation according to claim 6, characterized in that The receiving side further includes receiving information about a hybrid automatic repeat request (HARQ) of the data transmitted from the transmitting side via the control channel.
The method of radio resource allocation according to any one of claims 1 to 7, characterized in that. The receiver of the radio resource allocation,
A determining unit configured to determine, based on index information of the index channel, that the time-frequency position indicated by the index information is the channel time-frequency position where the control channel is located;
A receiving unit configured to receive, via the control channel on the channel time-frequency position, data time-frequency position indication information, a size of the time-frequency resource occupied by the data, and a modulation and coding scheme of the data,
And the data time frequency position indication information is used to indicate the data time frequency position where the data on the receiving side is located,
Receiving side of the wireless resource allocation. The receiving side is further configured to determine a time frequency position of the index channel based on a time offset and a frequency offset of a time frequency reference point,
The receiving side of radio resource allocation according to claim 9, characterized in that