JPWO2019166002A5 - - Google Patents

Description

The present invention generally relates to the field of uplink wireless communication, and more specifically to mapping uplink control information UCI and user data on uplink communication channels. More specifically, an exemplary embodiment of the present specification is a subframe having a channel quality information CQI modulation symbol and a plurality of physical uplink shared channel PUSCH modulation symbols, a first time slot and a second time slot. With respect to a method and user device (UE) for mapping to and transmitting with at least one unauthenticated carrier.

Initially, LTE is designed for a license spectrum in which the operator can have an exclusive license for a particular frequency range. The license spectrum has advantages because the operator can plan the network and control the interference conditions, but usually the costs associated with obtaining a spectrum license are high and the amount of license spectrum is limited.

On the other hand, the unauthenticated spectrum can be used by anyone and can be used free of charge according to a series of rules such as maximum transmission power. Since this spectrum is available to anyone, the interference situation is usually more difficult to predict than the licensed spectrum. Therefore, the quality and availability of service cannot be guaranteed. Moreover, the maximum transmission power is limited and is often unsuitable for wide coverage. Wi-Fi and Bluetooth are two examples of communication systems that utilize unauthenticated spectra in the lower frequency range (2.4 GHz or 5 GHz).

Therefore, to provide spectral flexibility, the evolution of LTE extends the operation of mobile communication networks to the unauthenticated spectrum, complementing the license spectrum and providing higher overall data rates and capacities, especially in the local area. do. One option is to complement the LTE network with Wi-Fi, but higher performance can be achieved by tightly coupling the licensed and unauthenticated spectra.

Therefore, LTE Release 13 introduced License Aggregation Access (LAA). A carrier aggregation framework may be used to aggregate downlink carriers in the unauthenticated spectrum, primarily in the 5 GHz range, and the carriers may be in the license spectrum. Services that require mobility, critical control signaling, and high quality services may depend on the carrier of the license spectrum, and less demanding services (at least in part) may use carrier processing of the unauthenticated spectrum.

Against this background, Release 13 increases the number of carriers that can be aggregated to 32, with a maximum bandwidth of 640 MHz on the downlink and a theoretical peak data rate of about 25 Gbit / s. One motivation for increasing the number of subcarriers is to allow very large bandwidth in such an unauthenticated spectrum. These trends continue to evolve with the development of new 5th generation (5G) mobile communication standards.

An important feature of the 5G radio access technology known as New Radio (NR) is the significant expansion of the spectral range in which the radio access technology can be deployed. Unlike LTE, which supports licensed spectra such as 3.5 GHz and unauthenticated spectra such as 5 GHz, NR supports licensed spectrum operation from 1 GHz to 52.6 GHz from the first release, to unauthenticated spectra. We are also planning to expand. In particular, some high frequency bands that NR may handle are uncertified.

As can be seen from the above, these two spectral types have different advantages and disadvantages. Therefore, in combination, the license spectrum is used to provide wide area coverage and quality assurance, and the unauthenticated spectrum is used as a complement to the local area to allow users without impacting overall coverage, availability, or reliability. Data rate and total capacity can be increased.

One function that works with the unauthenticated spectrum is to share the unauthenticated spectrum fairly with other operators and other systems (such as Wi-Fi). There are several mechanisms that can be used to achieve this. For example, dynamic frequency selection (DFS), where a network node (eg, launching a DFS-enabled access point) searches and finds part of the unauthenticated spectrum at low load and, if possible, another. You can avoid the system. In addition, the LBT (Listen Before Talk) mechanism is another mechanism by which the transmitter guarantees that there is no ongoing transmission on the channel prior to transmission. In the development of NR, interference is controlled specifically by relying on LBT, and various operators (LTE, LTE-A, 5G devices, etc.), Wi-Fi devices, and other systems (radar, etc.) are channels of unauthenticated spectrum. Can be used for fair sharing between devices.

Devices operating in the unauthenticated spectrum (eg, radio base stations (eNBs) or user devices (UEs)) typically need to perform LBT on specific channels. The LBT mechanism allows devices to apply a clear channel assessment (CCA) to identify other transmissions within a channel (ie, "listening") prior to transmission on the channel (ie, "talk"). For example, there are two types of LBT. In the first type of LBT, the device needs to perform CCA and / or transmission only at certain times. In particular, CCA can be performed during monitoring of the time slot (ie, the period during which the operating channel confirms the presence of other devices).

The device may need to confirm the presence of another device operating on the channel based on the signal level of the other device detected. This mechanism, sometimes referred to as energy detection, usually requires determining whether the detection signal level of another device operating on the channel exceeds a predetermined threshold, such as an energy detection threshold.

If the detected signal level exceeds a given threshold, the device determines that the channel is busy or unavailable and does not perform transmission. This situation is called LBT failure or LBT failure. If the device fails to perform a transmission, the device may continuously monitor the channel until it becomes available.

If the channel is determined to be available (ie, the device does not detect another device's signal level above a given threshold), the CCA mechanism allows the device to start transmitting immediately.

In the second type of LBT, the device has a backoff mechanism when performing CCA. Alternatively, the device needs to monitor a certain amount of CCA slots before determining that the channel is available. For a random amount of CCA slots, device backoff may be required (ie, no transmission is performed). The random amount of the CCA time slot is, for example, an integral multiple of the time slot and can be determined based on the transmission priority. As mentioned above, if the device performing the CCA determines that the channel is not available, it can be described as an LBT failure or an LBT failure. If the LBT fails, the device may continuously monitor the channel until it becomes available.

If the random amount of CCA time slots is clear, then the channel is clear (available) and the device can perform transmission. Conversely, if at least one of the random amount of CCA time slots is unclear and the channel is unavailable, the device will not be able to perform transmission. This situation, also known as LBT failure or LBT failure, as described above, the device monitors the channel further (continuously) until a random amount of CCA slots is cleared and the channel becomes available. can.

FIG. 1 is a schematic diagram showing how the LBT mechanism can be implemented according to the exemplary embodiments of the present specification. At time t0, the UE 11 performs a first type of LBT, performs a CCA during the observation slot 13a, and determines that the radio access point 12 (an example of a Wi-Fi device) is not operating on the channel. do. When the channel becomes available, the UE 11 transmits on the channel (on an unauthenticated carrier) at time t1 according to the CCA mechanism, as indicated by reference number 14.

At time t2, the UE 11 is instructed to perform a second type of LBT, and the radio access point 12 initiates transmission on the channel, as indicated by reference number 15. At time t3, the UE 11 executes the CCA while observing the time slot 13b and determines that the radio access point 12 is operating on the channel. After the LBT fails, the UE 11 continuously monitors the channel during the observation of time slots 13c-13f until the radio access point finishes its transmission and the channel becomes available at time t4.

At time t5, the UE 11 performs a CCA during the observation slot 13g and determines that the radio access point 12 is not operating on the channel and retreats to a random period 16. At time t6, the UE 11 runs the CCA again during the observation slot 13h and determines that the channel is still available. Thus, at time t7, the UE 11 initiates transmission on the channel (on an unauthenticated carrier), as indicated by reference number 14.

When LTE / NR is deployed to an unauthenticated carrier / spectrum, the UE is triggered to transmit uplink control information (UCI) and user data over a physical uplink shared channel (PUSCH) in one subframe. .. For example, if the UE transmits a UCI over a physical uplink control channel (PUCCH) during a time interval that overlaps with a scheduled PUSCH transmission on the same carrier, the UE may multiplex the UCI to the PUSCH. Therefore, when the UE is transmitting on the PUSCH, the UCI is multiplexed with the data on the licensed resource (eg, the allocated subframe) rather than the transmission on the PUCCH.

UCI transmitted over PUSCH or PUCCH may include, for example, a scheduling request (SR), an acknowledgment (ACK) or a negative response (NACK), a channel quality indicator, a precoding matrix, an indicator of a hybrid automatic repeat request (HARQ) mechanism. Contains one or more of the rank indications.

In general, the channel quality indicator and / or the precoding matrix indicator may be represented as the channel quality information CQI.

As mentioned above, if the UE is configured to operate in the unauthenticated and licensed spectrum, the UE will have a first type LBT or a second type LBT for transmission over a period of time (candidate starting point). Can be instructed to do. As an example, a radio frame can contain a predetermined number of time slots configured in a subframe, and the UE listens only at the beginning of the frame, only at the beginning of the subframe, and only at one or more predetermined time slots in the frame. Or perform transmission.

If the UE is configured to carry UCI on the PUSCH, the UE has two candidate start points for PUSCH transmission to improve channel connectivity if the first candidate start point fails due to an LBT failure. be able to. Candidate starting points are at the boundaries of the time slot, or at any point in the time slot.

When operating in an unauthenticated spectrum, it would be useful to have the flexibility to initiate data transmission at any point in the time slot, not just the boundaries of the slots. In particular, once an unauthenticated channel becomes available, instead of waiting for the start of one slot to avoid another device starting transmission in the PUSCH subframe, PUSCH immediately or at the next symbol boundary. It may be beneficial to initiate a transmission. Conversely, if you need to wait until the start of a slot boundary to perform a transmission, you need to send some form of dummy data or a reserved signal over the channel from the start of a successful LBT operation to the start of the time slot. be. Therefore, this method may reduce the transmission efficiency of the system.

If the UE is configured to transmit UCI and user data in one subframe on the PUSCH, the UCI is considered to have a higher priority than the user data. As an example, regardless of whether the actual transmission starts at the first candidate point or the second candidate point, the CQI that will be transmitted in a particular subframe will always be in the second slot of the subframe. Mapped to. Further, according to conventional principles, after the CQI mapping is complete, the user data needs to be mapped from the second time slot (eg, in the form of a modulation symbol) and to the first time slot. This mapping determines the order of transmission.

The data transmitted as the PUSCH information bits in the PUSCH is provided from the upper layer of the UE to the lower layer of the UE in the form of a transmission block (TB). TBs are typically divided into one or more small code blocks (CBs), reducing memory requirements for encoding data into TBs for transmission. The TB can also include a single CB. CBs are usually correctly received at least part or all of each CB when multiple CBs are present, or at least some or all of the CBs are correctly received when a single CB is present. Encoded to be received.

After the above type of PUSCH mapping, if the PUSCH carries a TB containing multiple CBs, if transmitting from a second candidate start point, the CBs that are mapped only to the first time slot of the subframe are completely discarded. Will be (that is, not sent). As a result, since one or more CBs are not transmitted, the base station (eNB) that receives the TB transmitted by the UE may not be able to decode the entire TB. In addition, if the PUSCH carries a TB containing a single CB and the CB is mapped only to the first time slot of the subframe, then the TB is completely discarded if it is transmitted from the second candidate start point. (Not sent).

FIGS. 2, 3 (a) and 3 (b) show an example of this problem when TB contains three CBs. The letters in the figure represent the mapping sequence.

In particular, FIG. 2 is a schematic diagram showing UCI (an example of using CQI) and how user data of multiple PUSCH CBs, CB # 0, CB # 1, and CB # 2 are mapped to subframes. According to conventional methods, the subframe 20 has a first time slot 21 and a second time slot 22 for transmission by an unauthenticated carrier.

Note that if there is any DFT operation, the mapping shown is performed before the Discrete Fourier Transform (DFT) is applied. Specifically, in LTE and subsequent systems, conventional CQI and PUSCH multiplexed transmissions include, for example, the following processing steps:

The CQI information bit and the user data are encoded in the form of the PUSCH information bit, respectively, to acquire the CQI coding bit and the PUSCH coding bit. The CQI-encoded bit and the PUSCH-encoded bit are multiplexed by first arranging the CQI-encoded bit and then arranging the PUSCH-encoded bit in the bitstream.

The bitstream is scrambled by inputting a bitstream containing multiplexed CQI and PUSCH coded bits into the channel interleaver. The channel interleaver maps the bitstream to the matrix of resource elements that correspond to the resource elements of the upstream resource grid. Therefore, in connection with the resource unit mapping, the channel interleaver provides a time-priority mapping of the modulated symbols to the transmitted waveform, as described below.

The output bits of the channel interleaver are modulated to produce a modulated symbol.

Complex-valued symbols are generated by applying a Discrete Fourier Transform (DFT) to a modulated symbol using a transformation recorder.

Map complex-valued symbols to resource elements.

Therefore, the mapping shown will be the mapping performed by the channel interleaver.

In the illustrated example, the matrix shown is part of an uplink resource grid and corresponds to a subframe 20 containing resource elements (ie, time and frequency resources allotted for uplink transmission). Each resource element in subframe 20 is represented by the corresponding resource unit in the matrix shown. According to 4G and 5G communication standards, a resource element (RE) is the smallest unit of a resource grid composed of one subcarrier in the frequency domain and one OFDM symbol in the time domain. In this example, subframe 20 is a subframe containing two time slots 21 and 22, each slot containing 7 symbols in the time domain and 10 subcarriers or resource elements in the frequency domain. The frequency resource assigned to the uplink transmission must be, for example, an integral multiple of the resource block (RB), and one RB contains 12 subcarriers or resource elements in the frequency domain. Here, for illustration purposes only, 10 subcarriers are used in the frequency domain.

As shown in FIG. 2, the PUSCH demodulation reference signal (DMRS) 25 is allocated and transmitted to the user resource of the fourth symbol of each slot, and therefore DMRS is shown for both slots 21 and 22. It is shown to be mapped to the 4th resource unit in each row of the matrix. Therefore, the number of resource elements that can map the matrix of CQI and user data (and thus the number of resource elements that can subsequently map the modulation symbols) is 10 * 12 = 120. The number of bits in the bitstream mapped to each resource unit corresponds to the modulation order of the subsequent modulation symbols. For example, if the modulation order is 4 (ie, 16QAM is used), 4 bits are mapped to each resource element, corresponding to one modulation symbol that is later mapped to each resource element.

The first candidate start point 23 is located at the beginning of the first time slot 21 (that is, the first boundary of the first time slot 21 in the time domain), and the second candidate start point 24 is the second. It is located at the start of time slot 22 (that is, the first boundary of the second time slot 22 in the time domain).

The UCI 26 in the form of CQI in this example is a time-priority mapping (ie, sequence) that first follows the time direction of the second time slot 22 and then follows the frequency direction of the assigned frequency resource of the second time slot 22. Mapped from the first unit in the second time slot 22. After completion of UCI mapping in this order (CQI_0, ..., CQI_14 in the example of FIG. 2), PUBCH modulation symbols of PUSCH CB, CB # 0, CB # 1, and CB # 2 (in this case, 4 coded bits). Unit) first follows the time direction of the second time slot 22, and then follows the frequency direction of the allocated frequency resource of the second time slot 22 in a time priority mapping method, the first of the second time slots. It maps from the available resource units and runs until the modulation symbol is mapped to each resource unit in the second time slot 22. In the example of FIG. 2, then, for the remaining modulation symbols of CB # 1_10, ..., CB # 2_34, PUSCH CB, CB # 0, CB # 1, and CB # 2, according to the time direction of the first time slot 21. Then, in a time-priority mapping method according to the frequency direction of the allocated frequency resource of the first time slot 21, the first is performed until the entire mapping to PUSCH CB, CB # 0, CB # 1, and CB # 2 is completed. It is mapped from the first resource unit of the time slot 21 of.

As shown in FIG. 2, according to the conventional method, the third PUSCH CB CB # 2 is completely mapped to the first time slot 21.

3 (a) and 3 (b) map the UCI and the code block according to the conventional method of FIG. 2, and transmit the entire code block CB # 2 when transmission is started from the second candidate start point 24. It is a figure which shows that it is possible not to do.

In particular, FIG. 3A shows a case where it is determined that the channel is available during the observation of the time slot 13. In this example, since the CCA mechanism is used, the transmission of the first time slot 21 is started at the first candidate starting point 23 without a random backoff period. However, as shown in FIG. 3B, when it is determined that the channel cannot be used during the observation of slot 13, the data mapped to the first time slot 21 is not transmitted. Transmission is only from the second time slot 22 even if the channel is available in a subsequent observation time slot (not shown) and it is determined that transmission started during the second candidate start period 24 (only). It will be started. As a result, the data mapped to the first time slot is not transmitted.

As described above, all user data of the third PUSCH CB CB # 2 is mapped to the first time slot 21. Therefore, the entire third PUSCH CB CB # 2 is not received and decoded. Many widely used coding methods (eg turbo coding) require all CBs to be correctly decoded so that the entire TB can pass the cyclic redundancy check, so one CB must be sent. The entire TB may not be correctly decoded by the receiving device. The examples in FIGS. 2, 3 (a), and 3 (b) show this problem associated with a TB divided into multiple CBs, but this problem occurs when the TB contains a single CB. Can also occur.

Therefore, there is a need to develop better mapping methods in the art.

The present invention provides a method of mapping a modulation symbol to an assigned subframe and is applied when one PUSCH TB contains a plurality of CBs. Therefore, these enhanced mapping mechanisms solve the above technical problems in conventional systems.

Specifically, as described above, the inventor of the present application assigns the channel quality information CQI modulation symbol and the physical uplink shared channel PUSCH modulation symbol to the resource unit of the allocation subframe having the first time slot and the second time slot. Provides a method of mapping to and transmitting on at least one unauthenticated carrier. The method maps the CQI modulation symbol to the resource unit in the second time slot of the assigned subframe, where the CQI modulation symbol is mapped from the first resource unit in the second time slot in a time-priority mapping scheme. , PUSCH modulation symbols are mapped to resource units in both the first and second time slots of the assigned subframe, where the PUSCH modulation symbols are mapped from the first resource unit in the first time slot in a time-priority mapping scheme. Map.

The inventor of the present application provides a computer program including an instruction, and when executed by the mobile computing device, the instruction causes the mobile computing device to execute the above method.

The inventor of the present application provides a non-temporary computer-readable storage medium for storing the above computer program, stores the computer program including the instruction, and when executed by a mobile computing device, the instruction is mobile computing. Have the ing device perform the above method .

The inventor of the present application provides a user device UE applied to a wireless communication system. User devices include memory and processors. When the memory stores one or more computer programs and is executed by the processor, the processor performs an operation according to the above method.

The inventor of the present application provides a user device UE for mapping a modulation symbol . A UE that does not transmit the PUSCH and the physical uplink control channel PUCCH at the same time assigns the channel quality information CQI modulation symbol and the physical uplink shared channel PUSCH modulation symbol to the resource unit of the allocated subframe having the first time slot and the second time slot. Map to and transmit on at least one unauthenticated carrier. The user device includes a transmission / reception unit, a memory, and a control unit. The control unit maps the CQI modulation symbol to the resource unit of the second time slot of the assigned subframe, and here, maps the CQI modulation symbol from the first resource unit of the second time slot by the time priority mapping method. , PUSCH modulation symbols are mapped to resource units in both the first and second time slots of the assigned subframe, where the PUSCH modulation symbols are mapped from the first resource unit in the first time slot in a time-priority mapping scheme. Map.

Next, examples of the present invention will be described in detail as non-limiting examples with reference to the accompanying drawings. The same reference numbers that appear in different drawings may indicate the same or functionally similar elements, unless otherwise indicated.
It is a schematic diagram which shows how the LBT mechanism can be carried out according to an exemplary aspect of this specification. How the CQI and PUSCH modulation symbols are mapped to the resource elements of the assigned subframe with the first and second time slots for transmission on at least one unauthenticated carrier according to conventional methods. It is a schematic diagram which shows the Ruka. FIG. 6 is a schematic diagram showing how the entire PUSCH code block is not transmitted when the UCI and code blocks are mapped according to the conventional method of FIG. 2 and transmitted from the second candidate starting point. FIG. 6 is a schematic diagram showing how the entire PUSCH code block is not transmitted when the UCI and code blocks are mapped according to the conventional method of FIG. 2 and transmitted from the second candidate starting point. It is a schematic diagram of the wireless communication system by an exemplary aspect of this application. It is a flowchart of the mapping method of a modulation symbol in an exemplary aspect of this specification. It is a schematic diagram of another mapping method of a modulation symbol according to an exemplary aspect of this specification. It is a schematic diagram of another mapping method of a modulation symbol by an exemplary aspect of this specification. It is a schematic diagram of another mapping method of a modulation symbol according to an exemplary aspect of this specification. It is a schematic diagram of another mapping method of a modulation symbol according to an exemplary aspect of this specification. It is a block diagram which shows the exemplary signal processing hardware configuration of the user device 100 of FIG. 4 according to the exemplary embodiment of the present specification. It is a block diagram which shows the exemplary signal processing hardware configuration of the radio base station 200 of FIG. 4 according to the exemplary embodiment of the present specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

If a reference number is attached to the technical feature, detailed description or claims of the drawing, the reference number is used only to enhance the clarity of the drawing, detailed description and claims. Therefore, the presence or absence of the reference mark does not limit the scope of the claim element.

FIG. 4 is a schematic diagram of a wireless communication system 10 according to an exemplary embodiment of the present specification. The wireless communication system 10 includes a user device (UE) 100 and a wireless base station 200. The UE 100 performs wireless communication with the wireless base station 200. As in this embodiment, the radio base station 200 may be LTE-A eNodeB. Alternatively, the radio base station may be, for example, 5 GgNB (next generation node B).

The radio base station 200 provides access to the radio communication network to the UE 100 in the cell 300, for example via beamforming. In the example shown in FIG. 1, the radio base station 200 serves a single UE 100. However, in an alternative embodiment, the radio base station 200 can serve a plurality of UEs.

As in this embodiment, the UE 100 (which may be configured not to transmit the PUSCH and PUCCH at the same time) is in the form of a PUSCH modulation symbol and / or a UCI (eg, CQI) modulation symbol on the PUSCH to the radio base station 200. The UCI is transmitted to the radio base station 200 on the user data and / or PUCCH. As in this embodiment, the UE 100 may also be configured to perform transmission to the radio base station 200 on other channels and / or receive information transmitted by the radio base station 200 on the downlink channel. ..

As in this embodiment, the UCI may include a channel quality information CQI, eg, one or more channel quality indicators and / or one or more precoding matrix indicators. Alternatively, as an example, the UCI may include at least one of SR, HARQ ACK or HARQ NACK, a channel quality indicator, a precoding matrix indicator, and a rank display.

As in this embodiment, the UE 100 may include a control unit 110, a transmission / reception unit 120, and a memory 130. The UE 100 can map the channel quality information, CQI, modulation symbol, and PUSCH modulation symbol to the resource unit of the assigned subframe 20 having the first and second time slots 21, 22 (FIG. 6). (A) to 6 (d)), transmitted by at least one unauthenticated carrier. For example, the mapped CQI and PUSCH modulation symbols can be transmitted by a single unauthenticated carrier. Alternatively, the mapped CQI modulation symbol and PUSCH modulation symbol can be transmitted by multiple unauthenticated carriers.

In general, as in this embodiment, mapping a modulation symbol (eg, UCI and / or CB or TB user data) to the allocated subframe 20 allocates at least one frequency resource of the allocated subframe 20. Can include that. The frequency resource is an integral multiple of the resource block (RB) and represents, for example, an integral multiple of the resource element RE of the allocated subframe in the uplink resource grid used during PUSCH transmission. The matrix of resource elements corresponding to the allocated resource elements of the allocated subframe is the modulation symbol mapping, for example, the rows of the matrix corresponding to the allocated subcarriers of the allocated subframe, and the allocated subframes. It is a column of the matrix corresponding to the data symbol to be assigned. In general, a resource unit is considered available if the modulation symbol is not mapped and / or if the resource unit is not reserved for specific information (such as DMRS).

The control unit 110 can allocate the CQI modulation symbol and map it to the resource element of the second time slot 22 of the subframe 20. Here, the CQI modulation symbol is the time-priority mapping method of the second time slot 22. Mapped from the first resource unit. As in this embodiment, the CQI modulation symbol first follows the time direction of the second time slot 22, and then the time priority mapping that follows the frequency direction of the assigned frequency resource of the assigned subframe 20. It may be mapped by a method. That is, the amount of resources of the CQI modulation symbol is mapped over the second time slot 22.

The control unit 110 further maps the PUSCH modulation symbol to the resource units of the first and second time slots 21 and 22 of the allocated subframe, and optionally, the second time different from the first time priority mapping method. Use the priority mapping method.

Specifically, as in this embodiment, the PUSCH modulation symbol is mapped from the first resource unit in the first time slot by the time priority mapping method, and the time priority mapping method is the first and second. It follows both time directions of the time slot, and then follows the frequency direction of the assigned frequency resource of the assigned subframe. For example, the second time-priority mapping scheme starts with the first resource unit in the first time slot, first follows both the first and second time slots 21 and 22 in the time direction, and then follows. The order that follows the frequency direction of the allocated resource frequency of the allocated subframe 20 (skipping the resource element of the UCI mapping in the second time slot 22), that is, spans the entire subframe. Another preferred embodiment of the second time priority mapping will be described below.

To ensure that the radio base station 200 can correctly decode the CQI modulation symbol and the PUSCH modulation symbol of one or more CBs transmitted by the UE 100, the control unit 110 of the UE 100 is known to the radio base station 200. The CQI modulation symbol and the PUSCH modulation symbol are mapped to subframe 20 using the mapping method. For example, as in this embodiment, the radio base station may perform a first time-priority mapping and a second time-priority mapping of the CQI modulation symbol and the PUSCH modulation symbol at some time before the UE 100 performs uplink transmission. Instruct the UE 100 to provide information for mapping the mapping information of the mapping. As in this embodiment, the radio base station 100 can be configured to transmit this information, for example, via PDCCH. Alternatively, the radio base station 100 can be configured to transmit information or use higher layer signaling. Further, the radio base station 200 can be configured to transmit information indicating a first time priority mapping and a second time priority mapping for mapping to all UEs in the cell 300, or the cell. For each UE in 300, information that maps different first and second time priority mapping information is transmitted.

Alternatively, the radio base station 200 and the UE 100 may determine how the UE 100 uses the mapping in any suitable manner known to those of skill in the art.

The control unit 110 and the transmission / reception unit 120 may be configured to perform additional processing necessary for transmitting the CQI modulation symbol and the PUSCH modulation symbol, including, for example, those described above with respect to FIG. As in this embodiment, the transmission / receiver 120 may be configured to transmit the CQI modulation symbol and the PUSCH modulation symbol on the PUSCH after the CQI modulation symbol and the PUSCH modulation symbol have been mapped to the subframe 20. good.

The memory 130 is configured to store UCI and user data prior to processing such information and to store CQI-encoded bits and PUSCH-encoded bits and / or CQI-modulated symbols and PUSCH-modulated symbols prior to transmission. The memory 130 may also be configured to store computer instructions that, when executed by the control unit, cause the control unit to operate as described above.

FIG. 5 is a flow chart of a modulation symbol mapping method according to an example of the present specification.

In step S10 of FIG. 5, the control unit 110 of the UE 100 maps the CQI modulation symbol to the resource unit of the second time slot 22 of the allocation subframe 20, where the CQI modulation symbol is the first in the time priority mapping method. Mapping is performed from the first resource unit of the time slot 22 of 2. In this context, the mapping information of the time-priority mapping scheme includes mapping information in an order that first follows the time direction of the time slot and then follows the frequency direction of the allocated frequency resource of the allocated subframe 20. be able to. As in this embodiment, such a time-priority mapping scheme may include:

The first part of the information (eg, corresponding to the modulation symbol, for example, a predetermined number of bits or bytes can be selected based on the modulation order) is the first row of the time slot in the time domain. Map to one resource unit (eg, corresponding to RE in the first (unauthenticated) subcarrier of the frequency domain allocated to the allocated subframe 20).
The portion of the information that follows is mapped to the corresponding subsequent resource unit in the first row of the time domain, and the portion that is mapped to other information in each resource element of the first row of the time slot. If there is, for each subsequent row of subdomain 20, it starts with the first resource unit in the time domain slot and maps a portion of the information to each resource unit in the subsequent row's time slot.

The mapping continues until each piece of information is mapped to the corresponding resource unit in the time slot, or the corresponding part of the information is mapped to each resource unit in the time slot. In addition, mapping can be performed on all rows in subframe 20 or a subset of rows associated with subframe 20.

In this embodiment, each modulation symbol comprises a plurality of bits corresponding to the selected modulation scheme used to transmit the modulation symbol. Alternatively, one modulation symbol can be mapped to each resource unit.

In step S12 of FIG. 5, the control unit 110 maps the PUSCH modulation symbol to both the resource elements of the first and second time slots 21 and 22 of the assigned subframe 20.

For example, as in this embodiment, the mapping in both the first and second time slots 21 and 22 can be performed by the second time priority mapping method, the second time priority mapping method. Different from the first (used for mapping CQI modulated symbols). The time-priority mapping method maps the PUSCH modulation symbol from the first resource unit in the first time slot, and the time-priority mapping first follows both the time direction of the first and second time slots. , Then follows the frequency direction of the allocated frequency resource of the allocated subframe. That is, the second time priority mapping is the time direction of the first and second time slots 21, 22 and the allocated frequency resources of the subframe 20 so that the PUSCH modulation symbol is mapped to the entire subframe 20. Follows the frequency direction of, and skips the resource unit of UCI mapping at the same time.

Alternatively, the PUSCH modulation symbol is formed by connecting the modulation symbols of one or more code blocks CB of one transmission block TB in series.

Alternatively, the PUSCH modulation symbol may be formed by one or more CB modulation symbols of 1TB, and the amount of resource elements used to map the modulation symbol of each CB of the PUSCH is the same or approximately. It may be the same and / or the resource element of the modulation symbol of each CB for mapping the PUSCH in the first time slot and the modulation symbol of each CB for mapping the PUSCH in the second time slot. The amount of resource elements in is the same or about the same. That is, for each CB, the second time-priority mapping first follows the time direction of the second time slot 22, then the frequency direction of the allocated frequency resource of the subframe 20, and then the second. It follows the time direction of the time slot 21 of 1, and then follows the frequency direction of the assigned frequency resource of the subframe 20.

For example, the plurality of PUSCH coding bits may form one or more PUSCH code blocks CB (CB # 0, CB # 1, CB # 2) of one transmission block TB. That is, the plurality of PUSCH coding bits may form a single PUSCH CB or a plurality of PUSCH CBs in one TB. In general, the mapping information to both the first and second time slots 21 and 22 (for example, the PUSCH coding bits of each of the plurality of PUSCH CBs) is such that the partial data of the PUSCH CB is the first for each PUSCH CB. The time slot 21 of 1 is mapped, and it is ensured that a part of the data of the PUSCH CB is mapped to the second time slot 22.

As an example, mapping information to both the first and second time slots 21 and 22 modifies the process described above with respect to step S10 of FIG. 5 to modify each row (or) of the matrix corresponding to subframe 20. , Subset), including part of the information being mapped to each resource unit in subframe 20 of the row (ie, before part of the information is mapped to the resource allocation unit of subsequent rows). , A portion of the information maps to each resource element available in a particular row in both the first time slot 21 and the second time slot 22).

As an addition or alternative, mapping the information to both the first and second time slots 21 and 22 modifies the mapping process described for process S10 in FIG. 5 and alternates the information in the first time. Includes mapping to the columns corresponding to slot 21 and the second time slot. In general, alternating means that some of the information transmitted is mapped to two time slots before some of the information is mapped to all resource elements in any time slot.

The control unit 110 of the UE 100 may be configured so that the PUSCH modulation symbol is not mapped to a CQI mapped or mapped resource element.

The process of FIG. 5 may further include a process of performing a Discrete Fourier Transform DFT operation on the mapped UCI and PUSCH modulation symbols in each column.

As an addition or alternative, the process of FIG. 5 may further include the process of calculating the amount of resource elements of the CQI modulation symbol before mapping the UCI to the second time slot. Therefore, the CQI modulation symbol can be mapped to the resource element of the second time slot 22 of the allocated subframe 20, where the amount of mapped resource element is the amount of calculated resource element. equal.

From the above description of the operation performed by the UE 100, it is performed by mapping the PUSCH modulation symbol to both the first and second time slots 21 and 22 in a second time mapping scheme, according to the process of FIG. , UE 100 can map each CB of the TB to both the first time slot 21 and the second time slot 22 of the candidate subframe 20 for a predetermined TB containing one or more CBs. Therefore, the process of FIG. 5 can solve the problems associated with the conventional system described above.

Specifically, in the above exemplary embodiment and the other embodiments described below, the UE 100 can map a PUSCH modulation symbol to a single PUSCH TB containing a single CB or multiple CBs. As such, a mechanism is provided in which each CB of one TB is mapped to both the first time slot 21 and the second time slot 22 of the candidate subframe 20. Based on this mechanism, if the UE 100 needs to transmit the PUSCH in the second time slot 22 due to a channel access failure in the first time slot 21, the radio base station 200 correctly decodes each CB. The reason is that it is possible to receive at least partial information on the CB (in some embodiments, the eNB may receive information on important parts of each CB, such as system information). good). Therefore, in this case, the radio base station 200 may succeed in demodulating the PUSCH.

Therefore, as in this embodiment, the UE 100 performs an LBT (Listen Before Talk) on the frequency channel prior to the first candidate starting point for transmission when it is determined that the channel is available. The mapped PUSCH and the mapped UCI may be further configured to be transmitted from the first candidate starting point. If it is determined that the channel is not available, the UE 100 executes LBT (Listen Before Talk) for the frequency channel before transmission and transmission of the second candidate start point, and if it is determined that the channel is available. , PUSCH and UCI mapped from the second candidate start point can be transmitted.

As an example, the first candidate start point for transmission is located at the boundary of the first time slot in the time domain, and the second candidate start point for transmission is the second time slot in the time domain. Located on the border. Alternatively, the first candidate start point for transmission does not have to be located at the boundary of the first time slot in the time domain, and the second candidate start point is the boundary of the second time slot in the time domain. It does not have to be located in.

The process of FIG. 5 and any additions and modifications thereof (and thus any mapping results discussed below with respect to FIGS. 6 (a)-6 (d)) can be implemented by any suitable means. As an example, the procedure of FIG. 5 may be implemented by the UE 100. Alternatively, when the process of FIG. 5 is executed by the computer, it may be realized by a computer program including an instruction to cause the computer to execute the process of FIG. Such computer programs may be stored on non-temporary computer-readable storage media or carried by signals. As a further alternative, the process of FIG. 5 may be implemented by a mobile computing device that includes a processor and memory, where the memory causes the processor to execute the process of FIG. 5 when executed by the processor. It is configured to memorize instructions.

6 (a) to 6 (d) are schematic views of other mapping methods of modulation symbols according to the exemplary embodiments of the present specification.

As in the embodiment of FIGS. 6 (a) to 6 (d), the PUSCH modulation symbol may form a plurality of CB CB # 0, CB # 1, CB # 2 of one TB. However, this is not a limitation and the coding bits may form a single CB of one TB or be organized by any other suitable method known in the art.

Subframe 20 is represented by a resource unit matrix, as shown in the embodiments of FIGS. 6 (a) to 6 (d), and includes uplink resources including time and frequency resources that can be allocated for uplink transmission. Corresponds to part of the grid. As an example, as in the embodiment of FIGS. 6A-d, the subframe 20 can be a subframe containing two time slots 21 and 22, each time slot having seven symbols in the time domain. And subcarriers or resource elements in the frequency domain 10.

Alternatively, the subframe can be a subframe of any telecommunications standard including, but not limited to, LTE, LTE-A, UMTS, 3G, 4G, 5G. As a further alternative, the subframe 20 may include three or more slots. Further, in some embodiments, each time slot may contain 2, 4, 7, 14 or any other suitable number of symbols in the time domain, and / or each slot may contain a frequency. The region may contain 12, 24, or any other suitable number of subcarriers or resource elements.

Mapping, as in the embodiment of FIGS. 6 (a) to 6 (d), may include mapping the CQI modulation symbol 26 and the PUSCH modulation symbol to the resource unit corresponding to the resource element RE of the subframe. .. Alternatively, the mapping of FIGS. 6 (a)-(d) may include, but is not limited to, a resource allocation unit for an allocation subframe of any telecommunications standard, including LTE, LTE-A, UMTS, 3G, 4G, 5G. It may be adapted to allow the mapping of CQI modulation symbols 26 and PUSCH modulation symbols onto the represented resource unit.

Further, as in the embodiment of FIGS. 6 (a) to 6 (d), the candidate start points 23 and 24 may be arranged at the boundary between the first and second time slots 21 and 22. Alternatively, the candidate starting points 23, 24 may be located at the boundaries of any symbol between the slots. Alternatively, the candidate start points 23 and 24 may be located at any point in the time slot period.

Further, in the embodiment of FIGS. 6A to 6D, the PUSCH demodulation reference signal is used as the fourth symbol of each time slot (that is, the symbol # 3 in one slot) for all the assigned frequency RBs. Since (DMRS) 25 is transmitted, DMRS is mapped to the fourth resource unit in each row of the illustrated matrix for both slots 21 and 22, or the illustrated matrix does not contain a column of DMRS symbols. That is, as in the embodiment of FIGS. 6A to 6D, the UE 100 performs the PUSCH DMRS on all the assigned subcarriers in the fourth symbol of each of the slots 21 and 22 of the subframe 20. It is configured to transmit. Alternatively, the PUSCH DMRS25 may be mapped to a second symbol for each slot of all assigned subcarriers, or to any other suitable symbol and assigned subcarrier.

As a further alternative, the UCI 26 may include a CQI (channel quality indicator and / or precoding matrix indicator), as in the embodiments of FIGS. 6A-d. Alternatively, the UCI 26 includes, for example, at least one of SR, HARQ ACK or HARQ NACK, a channel quality indicator, a precoding matrix indicator, and a rank indicator. Further, when the DFT operation is performed as in the embodiment of FIGS. 6A to 6D, mapping may be performed before the DFT operation is performed.

For CQI and PUSCH mapping, the matrix of the resource unit corresponding to the assigned resource element of the assigned subframe is used, and the row of the matrix corresponds to the assigned subcarrier of the assigned subframe. It is assumed that the columns of the matrix correspond to the assigned data symbols on the first time slot of the assigned subframe. Also, the columns of the matrix are the set of first columns corresponding to the allocated data symbols on the first time slot of the allocated subframe and the allocation on the second time slot of the allocated subframe. Includes a second set of columns corresponding to the resulting data symbols.

[Mapping of Example 1]
FIG. 6A is a diagram showing an example of the first mapping result in this embodiment. Therefore, the UE 100 of FIG. 4 can realize the mapping result by the following implementation. It should be noted that these practices may be applied in the following order, or in some other order, or some of them may be omitted.

1) According to the first step, the UE 100 calculates the resource amount of the CQI 26. In the embodiment of FIG. 6A, the resource amount is 15 resource units CQI_0, ..., CQI_14.

2) The UE 100 then maps the CQI modulation symbol 26 onto the resource unit of the second column set 22 of the indicated matrix. As shown in FIG. 6A, from the first resource unit (CQI_0) in the first column of the first column set 22, the column of the second column set 22 is followed, and the matrix 20 shown below CQIs can be mapped in the order that follows the rows.

3) The UE 100 then maps the PUSCH modulation symbols of the PUSCH CB (here, CB # 0, CB # 1, CB # 2) to the resource units of the indicated matrix. From the first resource unit (CB # 0_0) in the first column of the first column set, it follows the column of the matrix 20 first shown, that is, the entire first column set 21 and the second column set 21. Then, the PUSCH modulation symbols are mapped in the order following the rows of the shown matrix 20.

When the mapping encounters the resource units CQI_0, ..., CQI_14 that should / are already in use for the CQI mapping, the UE 100 will perform the PUSCH mapping, as shown in FIG. 6 (a). Skip units CQI_0, ..., CQI_14.

[Mapping of Example 2]
FIG. 6B is a diagram showing an example of the mapping result of Example 2 according to this embodiment. The UE 100 may implement the mapping result by the following implementation. It should be noted that these practices may be applied in the following order, or in some other order, or some of them may be omitted.

1) According to the first step, the UE 100 calculates the resource amount of the CQI 26. In the embodiment of FIG. 6B, the resource amount is 15 resource units CQI_0 ..., CQI_14.

2) The UE 100 then maps the CQI modulation symbol 26 to the resource unit of the second column set 22 of the indicated matrix. As shown in FIG. 6 (b), from the first resource unit (CQI_0) in the first column of the first column set 22, the column of the second column set 22 is followed, and the matrix 20 shown below CQIs can be mapped in the order that follows the rows.

3) And, contrary to the mapping result example of Example 1 described with respect to FIG. 6 (a), the UE 100 is the same on each of the column sets 21 and 22 (and therefore, respectively in the first and second time slots). Or a resource element (corresponding to multiple REs) that should be assigned to each CB, or that the PUSCH CB should be mapped to maintain the same ratio between each column set 21, 22 for each CB. Based on the principle mechanism (corresponding to multiple REs), the resource amount (here, CB #) of the PUSCH modulation symbols of each CB (here, CB # 0, CB # 1, CB # 2) of the plurality of PUSCH CBs. 0_0, ..., CB # 0_35, CB # 1_0, ..., CB # 1_35, CB # 2_0, ..., CB2_35) can be calculated.

Such resource calculations should exclude the CQI resources CQI_0, ..., CQI_14.

As a non-limiting example, as shown in FIG. 6 (b), 15 resource units are CB # 0, CB # 1, and CB # 2, respectively, in the second column set 22 of the matrix shown. In the first column set 21 of the matrix assigned to and shown, 20 resource units are assigned to CB # 0, CB # 1, and CB # 2, respectively.

4) Then, the UE displays the PUSCH modulation symbols of the PUSCH CB (here, CB # 0, CB # 1, CB # 2) according to the resource amount calculated in step 3, and the resource of the matrix 20 shown. Can be mapped to a unit. The PUSCH modulation symbol of PUSCH CB is mapped to the calculated resource amount of each column set 21 and 22 with respect to the PUSCH modulation symbol of PUSCH CB, and in each column set 21 and 22, the first one of the column sets The mapping is performed in the order that follows the columns and then the rows of the indicated matrix. Such mapping may start with the first column set 21, then with the second column set 22, and vice versa.

In general, the UE 100 then, for each PUSCH CB CB # 0, CB # 1, CB # 2, first follows the column of the second set 22 of columns, and then to the row of the indicated matrix 20. By mapping the PUSCH modulation symbols in a second order that follows, then follows the columns of the first set 21 of columns, and then follows the rows of the shown matrix 20, the PUSCH modulation symbols of multiple PUSCH CBs. It can be mapped to both the first and second time slots 21 and 22. As an example, the UE 100 follows the columns of this column set first, then the rows of the indicated matrix, and is the first available resource unit of the second column set 22 (CB in this example). A plurality of PUSCH CB PUSCH modulation symbols are mapped to each of the first and second column sets 21 and 22 in the order starting from # 0_0).

As in this embodiment, the UE 100 has PUSCH CB CB # 0, CB # so that the same or approximately the same number of resource units in each column set (and on the slot for each transmission) are assigned to each CB. 1, CB # 2 can be mapped to the first and second column sets 21, 22 or, for each of CB CB # 0, CB # 1, CB # 2, the first column of the matrix 20. The same ratio can be maintained between the number of resource units allocated on the set 21 and the number of resource units allocated on the second column set 22 of the matrix 20.

As a non-limiting example, as shown in FIG. 6B, CB # 0, CB # 1, and CB # 2 are first placed in the second column set 22 of the matrix 20 shown after CQI26. It may be mapped and then mapped to the first column set 21 of the shown matrix 20. Such mapping can improve transmission performance, mapping most of the system bits on the second set of columns 22 and mapping to the second time slot 22, with the second time slot 22 being the second. It is advantageous because it has more transmission opportunities than one time slot 21 and can be mapped to a second time slot 22 with a higher transmission probability.

[Mapping of Example 3]
FIG. 6C is a diagram showing an example of the mapping result of Example 3 in the embodiment of the present invention. The UE 100 may implement the mapping result by the following implementation. It should be noted that these practices may be applied in the following order, or in some other order, or some of them may be omitted.

1) According to the first step, the UE 100 calculates the resource amount of the CQI 26. In the embodiment of FIG. 6 (c), the resource amount is 15 resource units CQI_0, ..., CQI_14.

2) The UE 100 then maps the CQI modulation symbol 26 to the resource unit of the second column set 22 of the indicated matrix 20. As shown in FIG. 6 (c), the first column of the second column set 22 follows the columns of the second column set 22 and the rows of the matrix 20 shown below. CQI can be mapped from the resource unit (CQI_0).

3) Next, contrary to the mapping results of Examples 1 and 2 described above with respect to FIGS. 6 (a) and 6 (b), the UE 100 is a PUSCH modulation symbol of the PUSCH CB (here, CB # 0, CB). # 1, CB # 2) can be mapped to the resource unit of matrix 20, and the PUSCH CB-like PUSCH modulation symbol is the first resource unit in the first column on the second column set 22 after the CQI mapping. Mapping is started from CB # 0_0, and the order follows the column of the matrix 20 shown first, and the rows of the matrix 20 shown next.

4) After the mapping of the last resource unit CB # 2_16 of the second column set 22 is completed, the UE will perform the rest of the multiple PUSCH modulation symbols of PUSCH CB CB # 0, CB # 1, CB # 2. The PUSCH modulation symbols are mapped in this order to the remaining resource units CB # 2_17, ... CB # 2_34 in the first column set 21 of the indicated matrix 20, and the first column set until the mapping is complete. Starting from the first resource element CB # 2_17 in the first column of 21. The remaining available resources CB # 2_17 ..., CB # 2_34 of the first column set 21 correspond to the row of the resource unit of the mapped second column set 22 before the CQI 26 in the frequency domain.
[Mapping of Example 4]
FIG. 6D is a diagram showing an example of the mapping result of Example 4 in the embodiment of the present invention. The UE 100 may implement the mapping result by the following implementation. It should be noted that these practices may be applied in the following order, or in some other order, or some of them may be omitted.

1) According to the first step, the UE 100 calculates the resource amount of the CQI 26. In the embodiment of FIG. 6 (b), the resource amount is 15 resource units CQI_0, ..., CQI_14. 2) Then, the UE 100 displays the CQI modulation symbol 26 in the second column of the matrix 20 shown. Map to the resource unit of set 22. As shown in FIG. 6D, CQI26 is mapped from the first resource unit (CQI_0) in the first column of the second column set 22, first follows the column of the second column set 22, and then follows. Can be followed in the order of the second column set 22 / row of the illustrated matrix 20.

3) After that, the UE 100 maps the PUSCH modulation symbols of PUSCH CB CB # 0, CB # 1, and CB # 2 to the resource unit of the indicated matrix 20 as in this embodiment, and the second after UCI mapping. Starting from the first resource unit in the first column of the column set 22 of 2, up to each resource unit on the row containing the last resource unit in the CQI mapping.

That is, the UE 100 maps the PUSCH modulation symbol of the PUSCH CB (here, CB # 0, CB # 1, CB # 2) on the candidate subframe 20, and the PUSCH CB CB # 0, CB # 1, CB # 2 The mapping of the PUSCH modulation symbols in is first the row of the CQI mapping on the second column set 22 (ie, one row of the matrix 20 shown in FIG. 6D) and the allocated frequency resource. (Corresponding to) (ie, PUSCH CB (here, CB # 0)). After the last resource unit CQI_14 in the CQI mapping, optionally demodulate between them until all resource units on that row of the second column set 22 are allocated, as shown in FIG. 6 (d). The mapping is started directly with the reference signal (DRMS). In the example of FIG. 6D, the PUSCH modulation symbol of the PUSCH CB is mapped to the resource elements CB # 0_0, CB # 0_1, and CB # 0_2 in this step.

4) Then, the UE 100 then transfers the PUSCH modulation symbols of PUSCH CB CB # 0, CB # 1, and CB # 2 from the first resource unit in the first column of the first column set 21. Mapping to the available resource units of the column set 21 and the second column set 22, the order is to follow the columns of the first indicated matrix 20 and then the rows of the indicated matrix 20. ..

That is, from the first resource unit CB # 03 in the first column of the first column group 21, the mapping first follows the entire column of the matrix 20, and then the mapping follows the rows of the matrix 20. Will be continued. If the mapping encounters a resource unit that is not available, for example CQI_0, ..., CQI_14 that should be used for CQI mapping, the PUSCH mapping should skip the resource unit.

As will be apparent from the description of the operation performed by the UE 100, the UE 100 will be shown a PUSCH modulation symbol for each of the plurality of PUSCH CBs according to the mapping shown in any of FIGS. 6 (a) to 6 (d). By mapping to both the first column set 21 and the second column set 22 of the matrix 20 (and thus to both the first time slot 21 and the second time slot 22, respectively), one TB. Each CB can be mapped to both the first time slot 21 and the second time slot 22 of the candidate subframe 20, and is transmitted when one PUSCH TB contains a plurality of CBs. It is possible to avoid the problems described in the prior art.

FIG. 7 is a block diagram showing an exemplary signal processing hardware configuration 700 of the user apparatus 100 of FIG. 4 according to an exemplary embodiment of the present specification. As in this embodiment, the programmable signal processing hardware 700 of FIG. 7 is configured to function as the UE 100 of FIG. However, the UE 100 of FIG. 4 is instead any suitable hardware and software component in non-programmable hardware, such as application-specific integrated circuits (ASICs), or in any other suitable manner. The combination is used to provide the processing and communication functions required for the UE 100 to operate in accordance with one or more legacy telecommunications standards, including, but not limited to, LTE, LTE-A, UMTS, 3G, 4G, 5G. Note that it can be implemented to include.

The programmable signal processing hardware 700 includes a transmission / reception unit 710 and one or more antennas 705. The signal processing device 700 includes a control unit (for example, a central processing unit, a CPU or a graphic processing unit (GPU)) 720, a working memory 730 (for example, a random access memory), and an instruction memory 740 for storing computer-readable instructions. Further included, when executed by the control unit 720, causes the processor 720 to execute the function of the UE 100 of FIG.

The instruction memory 740 may include a ROM preloaded with computer-readable instructions (eg, in the form of electrically erasable programmable read-only memory (EEPROM) or flash memory). Alternatively, the instruction memory 740 may include RAM or a similar type of memory, where the computer-readable instructions of the computer program carry the computer program product (eg, CD-ROM, DVD-ROM, etc., or computer-readable instructions). It may be input from a non-temporary computer-readable storage medium 750) in the form of a computer-readable signal 760.

FIG. 8 is a block diagram showing an exemplary signal processing hardware configuration 800 for the radio base station 200 of FIG. 4, according to an exemplary embodiment of the present specification. As in this embodiment, the programmable signal processing hardware 800 of FIG. 4 may be configured to function as the radio base station 200 of FIG. However, the radio base station 200 may instead be non-programmable hardware, such as an application-specific integrated circuit (ASIC), or the radio base station 200 may be LTE, LTE-A, UMTS, 3G, 4G. Any other suitable method of hardware and software components to include the processing and communication functions required to operate in accordance with one or more legacy telecommunications standards, including but not limited to 5G. Note that it can be implemented using the appropriate combination.

The programmable signal processing hardware 800 includes a transmission / reception unit 810 and one or more antennas 805. The signal processing device 800 includes a network communication interface 815, a control unit (for example, a processor such as a central processing unit, a CPU, and a graphic processing device GPU) 820, a working memory 830 (for example, a random access memory), and a computer-readable instruction. Further includes an instruction memory 840 for storing the above, and when executed by the control unit 820, causes the processor 820 to execute the function of the radio base station 200 of FIG.

The instruction memory 840 may include a ROM preloaded with computer-readable instructions (eg, in the form of electrically erasable programmable read-only memory (EEPROM) or flash memory). Alternatively, the instruction memory 840 may include RAM or a similar type of memory, where the computer-readable instructions of the computer program carry the computer program product (eg, Cd-ROM, DVD-ROM, or computer-readable instructions). It may be input from a non-temporary computer-readable storage medium 850) in the form of a computer-readable signal 860.

Although detailed examples have been described, they are merely to provide a better understanding of the invention as defined by the independent claims and should not be considered limiting.

Claims (26)

Modulation symbol mapping method
The CQI modulation symbol is mapped to the resource unit of the second time slot of the assigned subframe, and here, the CQI modulation symbol is mapped from the first resource unit of the second time slot by the time priority mapping method.
The PUSCH modulation symbol is mapped to the resource units of both the first time slot and the second time slot of the allocation subframe, and here, from the first resource unit of the first time slot by the time priority mapping method. A method comprising mapping a PUSCH modulation symbol. The method according to claim 1, wherein the PUSCH modulation symbol is mapped from the first resource unit in the first time slot by a time priority mapping method, and the resource unit for CQI mapping is jumped. It is characterized in that the CQI modulation symbol is mapped by using a time priority mapping method that follows the time direction of the second time slot and then follows the frequency direction of the frequency resource allocated by the allocated subframe. The method according to claim 1 or 2. The PUSCH modulation using a time-priority mapping method that follows the time direction of both the first time slot and the second time slot and then follows the frequency direction of the frequency resource allocated by the allocated subframe. The method according to any one of claims 1 to 3, wherein the symbol is mapped. The method according to any one of claims 1 to 4, further comprising calculating the amount of resource units of the CQI modulation symbol. 5. The CQI modulation symbol is mapped to a resource unit in the second time slot of the allocation subframe, wherein the amount of the mapped resource unit is equal to the calculated amount of the resource unit. The method described in. The method according to any one of claims 1 to 6, wherein the PUSCH modulation symbol is formed by connecting modulation symbols of one or more code blocks CB of one transmission block TB in series. .. Modulation symbol mapping method
The CQI modulation symbol is mapped to the resource unit of the second time slot of the assigned subframe, and here, the CQI modulation symbol is mapped from the first resource unit of the second time slot by the time priority mapping method.
The PUSCH modulation symbol is mapped to the resource units of both the first time slot and the second time slot of the assigned subframe, where the PUSCH modulation symbol is formed by one or more CB modulation symbols of one TB. And / or the amount of resource units for mapping the modulation symbols of each CB of the PUSCH is the same or almost the same, and / or the amount of resource units for mapping the modulation symbols of each CB of the PUSCH in the first time slot. And a second time slot comprising the same or approximately the same amount of resource units for mapping the modulation symbols of each CB of the PUSCH. For one or more CB modulation symbols on the PUSCH
After following the time direction of the second time slot, the modulation symbol of each CB is mapped by using the time priority mapping method that follows the frequency direction of the frequency resource allocated by the allocated subframe.
Next, the other modulation symbols of each CB are mapped by using the time priority mapping method that follows the time direction of the first time slot and then follows the frequency direction of the frequency resource allocated by the allocated subframe. The method according to claim 8, wherein the method is characterized by the above. Performing an LBT (Listen Before Talk) on a frequency channel prior to the first candidate starting point for transmission,
When it is determined that the channel is available, the allocation subframe is transmitted from the first candidate starting point, and
If it is determined that the channel is not available, LBT is performed on the frequency channel before the second candidate start point for transmission, and if it is determined that the channel is available, the second candidate is said. The method of claim 8 or 9, further comprising transmitting the assigned subframe from a starting point. The first candidate start point for transmission is located at the boundary of the first time slot in the time domain, and the second candidate start point for transmission is located at the boundary of the second time slot in the time domain. 10. The method according to claim 10. The first candidate start point for transmission is not located at the boundary of the first time slot in the time domain, and the second candidate start point for transmission is not located at the boundary of the second time slot in the time domain. The method according to claim 10, wherein the method is characterized by the above. A non-temporary computer-readable storage medium
Memorize computer programs containing instructions,
When executed by a mobile computing device, the instruction is a non-temporary computer-readable storage medium comprising the mobile computing device performing the method according to any one of claims 1-12. .. A user device UE applied to wireless communication systems.
Including memory and processor
A user device UE comprising one or more computer programs, wherein when the processor executes the computer program, the method according to any one of claims 1 to 12 is executed. User device UE for modulation symbol mapping
The user device includes a transmission / reception unit, a memory, and a control unit.
The control unit maps the CQI modulation symbol to the resource unit of the second time slot of the subframe, maps the CQI modulation symbol from the first resource unit of the second time slot by the time priority mapping method, and then maps the CQI modulation symbol. The PUSCH modulation symbol is mapped to the resource units of both the first time slot and the second time slot of the allocation subframe, and the PUSCH modulation symbol is transferred from the first resource unit of the first time slot by the time priority mapping method. A user device UE characterized by being configured to map. The control unit is configured to map the PUSCH modulation symbol from the first resource unit in the first time slot by a time priority mapping method and jump the resource unit for CQI mapping. 15. The user device UE according to claim 15. The control unit maps the CQI modulation symbol by using a time-priority mapping method that follows the time direction of the second time slot and then follows the frequency direction of the frequency resource allocated by the allocated subframe. The user device UE according to claim 15 or 16, wherein the user device UE is configured as such. The control unit uses a time-priority mapping method that follows the time direction of both the first time slot and the second time slot, and then follows the frequency direction of the frequency resource allocated by the allocated subframe. The user device UE according to any one of claims 15 to 17, wherein the user device UE is configured to map the PUSCH modulation symbol. The user device UE according to any one of claims 15 to 18, wherein the control unit is configured to calculate the amount of resource units of the CQI modulation symbol. The control unit is configured to map the CQI modulation symbol to a resource unit in the second time slot of the assigned subframe.
19. The user device UE of claim 19, wherein the amount of resource units to be mapped is equal to the calculated amount of resource units. The user according to any one of claims 15 to 20, wherein the PUSCH modulation symbol is formed by connecting modulation symbols of one or more code blocks CB of one transmission block TB in series. Device UE. User device UE for modulation symbol mapping
The user device includes a transmission / reception unit, a memory, and a control unit.
The control unit maps the CQI modulation symbol to the resource unit of the second time slot of the assigned subframe, and maps the CQI modulation symbol from the first resource unit of the second time slot by the time priority mapping method. The PUSCH modulation symbol is configured to map to resource units in both the first and second time slots of the assigned subframe, with one or more CB modulation symbols in one TB to create a PUSCH modulation symbol. The amount of resource units formed to map the modulation symbols of each CB of the PUSCH is the same or approximately the same, and / or the resource units for mapping the modulation symbols of each CB of the PUSCH in the first time slot. A user device UE characterized in that the amount and the amount of resource units for mapping the modulation symbols of each CB of the PUSCH in the second time slot are the same or approximately the same. The control unit may control one or more CB modulation symbols of the PUSCH.
After following the time direction of the second time slot, the modulation symbol of each CB is mapped by using the time priority mapping method that follows the frequency direction of the frequency resource allocated by the allocated subframe.
Next, the other modulation symbols of each CB are mapped by using the time priority mapping method that follows the time direction of the first time slot and then follows the frequency direction of the frequency resource allocated by the allocated subframe. 22. The user device UE according to claim 22. The control unit is further configured to perform an LBT (Listen Before Talk) on the frequency channel prior to the first candidate starting point for transmission.
When the control unit determines that the channel is available, the transmission / reception unit transmits the allocation subframe from the first candidate start point.
When the control unit determines that the channel is unavailable, the control unit executes LBT on the frequency channel before the second candidate start point for transmission, and determines that the control unit can use the channel. If so, according to any one of claims 15 to 23, the transmission / reception unit is further configured to transmit the allocated subframe from the second candidate start point. User device UE. The first candidate start point for transmission is located at the boundary of the first time slot in the time domain, and the second candidate start point for transmission is located at the boundary of the second time slot in the time domain. 24. The user device UE according to claim 24. The first candidate start point for transmission is not located at the boundary of the first time slot in the time domain, and the second candidate start point for transmission is not located at the boundary of the second time slot in the time domain. 24. The user device UE according to claim 24.