JP7121831B2 - Wireless communication device, wireless communication method and integrated circuit - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to the field of wireless communication, and in particular, a wireless communication apparatus, wireless communication method for eNodeB (eNB), User Equipment (UE), and enabling/disabling of semi-static scheduling (SPS). and integrated circuits.

V2X refers to vehicle-to-vehicle communication (V2V), vehicle-to-pedestrian communication (V2P), vehicle-to-infrastructure communication (V2I), or vehicle-to-network communication (V2N). means This is currently being discussed in 3GPP RAN1 and one of the starting points for research is LTE Rel. 12/Rel. Based on the 13 device-to-device (D2D) framework.

One non-limiting exemplary embodiment provides a technique to facilitate SPS enable/disable in V2X or D2D.

In a first general aspect of the present disclosure, an eNodeB (eNB) fills semi-static scheduling (SPS) enable/disable fields in downlink control information (DCI) with a predetermined bit pattern. and based on the SPS enable/disable field, either the first user equipment (UE) initiates periodic transmission of signals to the second UE, or the second a transmitting unit operable to transmit a DCI to the first UE to stop transmission of periodic signals to the UE, the DCI being part of at least one field of DCI format 5 or in an SPS format formed by adopting all bits as SPS enable/disable fields, where the information to be transmitted in at least one field is Radio Resource Control (RRC) or Media Access Control (MAC ) eNodeB (eNB) is provided, indicated with or by means of signaling.

In a second general aspect of the present disclosure, an eNodeB (eNB) operable to scramble a cyclic redundancy check (CRC) of downlink control information (DCI) with a radio network temporary identifier (RNTI) A circuit and whether a first user equipment (UE) should transmit a signal to a second UE once, initiate periodic transmission of a signal to the second UE, or transmit a signal to the second UE. a transmitting unit operable to transmit a DCI to the first UE to determine whether to stop transmitting periodic signals based solely on the RNTI, the DCI being in DCI format 5. (eNB) is provided.

In a third general aspect of the present disclosure, an eNodeB (eNB) configures a semi-static scheduling (SPS) enable/disable field in first downlink control information (DCI) with a predetermined bit pattern. Based on the circuitry operable to fill and the SPS enable/disable fields, the first user equipment (UE) may either send a signal to the second UE once or send a signal to the second UE. a transmitting unit operable to transmit a first DCI to a first UE to initiate periodic signal transmission or to stop periodic signal transmission to a second UE; , the first DCI is in a format formed by further adding an SPS enable/disable field to DCI format 5, and the transmitting unit also provides for the first UE to transmit signals to the eNB , is also operable to transmit a second DCI to the first UE, the second DCI being in DCI format 0/1A with all legacy fields enabled, or the first eNodeB (eNB ) is provided.

In a fourth general aspect of the present disclosure, a user equipment (UE) receiver operable to receive downlink control information (DCI) transmitted from an eNodeB (eNB); operable to initiate periodic signal transmission to another UE or stop periodic signal transmission to said another UE based on the SPS enable/disable field of and the DCI is in an SPS format formed by employing some or all bits of at least one field of DCI format 5 as an SPS enable/disable field, and in at least one field The information to be transmitted is provided to the user equipment (UE) indicated with or by radio resource control (RRC) or medium access control (MAC) signaling.

In a fifth general aspect of the present disclosure, a user equipment (UE), a receiver operable to receive downlink control information (DCI) transmitted from an eNodeB (eNB); Cyclic redundancy of DCI determines whether to send a signal to a UE once, to start sending periodic signals to the other UE, or to stop sending periodic signals to the other UE. and circuitry operable to determine based solely on a Radio Network Temporary Identifier (RNTI) scrambling check (CRC), the DCI being in DCI format 5.

In a sixth general aspect of the present disclosure, a user equipment (UE), a receiver operable to receive first downlink control information (DCI) transmitted from an eNodeB (eNB); Based on the SPS enable/disable field in the first DCI, transmit a signal to another UE once, initiate periodic transmission of a signal to the another UE, or and a transmitter operable to stop transmitting periodic signals to the UE, the first DCI having a format formed by further adding an SPS enable/disable field to DCI format 5. Yes, the receiver is also operable to receive a second DCI transmitted from the eNB for the transmitter to transmit signals to the eNB, the second DCI is DCI format the same fields as in DCI format 0/1A enabled or added to DCI format 5 such that the size of the first DCI is the same as the size of the second DCI. A user equipment (UE) is provided in a format formed by adding to 0/1A.

In a seventh general aspect of the present disclosure, a wireless communication method implemented by an eNodeB (eNB), comprising setting a semi-static scheduling (SPS) enable/disable field in downlink control information (DCI) to , filling with a predetermined bit pattern and based on the SPS enable/disable field, the first user equipment (UE) initiates periodic transmission of signals to the second UE, or and sending a DCI to the first UE to stop transmitting periodic signals to the second UE, the DCI comprising some or all bits of at least one field of DCI format 5. as the SPS enable/disable fields, and the information to be transmitted in at least one field is specified using radio resource control (RRC) or medium access control (MAC) signaling. A method of wireless communication is provided by or indicated by.

In an eighth general aspect of the present disclosure, a wireless communication method implemented by an eNodeB (eNB), comprising performing a Cyclic Redundancy Check (CRC) of Downlink Control Information (DCI) by a Radio Network Temporary Identifier (RNTI). scrambling and determining whether the first user equipment (UE) should transmit a signal to the second UE once, initiate periodic transmission of the signal to the second UE, or the second UE transmitting DCI to the first UE to determine whether to stop transmitting periodic signals to the UE based solely on the RNTI, the DCI being in DCI format 5. be done.

In a ninth general aspect of the present disclosure, a wireless communication method implemented by an eNodeB (eNB) comprising semi-static scheduling (SPS) enabling/disabling in first downlink control information (DCI) Based on the step of filling the field with a predetermined bit pattern and the SPS enable/disable field, the first user equipment (UE) either transmits a signal to the second UE once or the second UE transmitting a first DCI to a first UE to start transmitting periodic signals to or stop transmitting periodic signals to a second UE; is in a format formed by further adding an SPS enable/disable field to DCI format 5, transmitting; where the second DCI is in DCI format 0/1A with all legacy fields enabled or the size of the first DCI is that of the second DCI. and transmitting in a format formed by adding to DCI format 0/1A the same fields that are added to DCI format 5 to be the same size. be done.

In a tenth general aspect of the present disclosure, a wireless communication method implemented by a user equipment (UE) comprising: receiving downlink control information (DCI) transmitted from an eNodeB (eNB); Initiating periodic signal transmission to another UE or stopping periodic signal transmission to said another UE based on the SPS enable/disable field in , DCI is in an SPS format formed by adopting some or all bits of at least one field of DCI format 5 as an SPS enable/disable field, and is to be transmitted in at least one field. Information is provided for wireless communication methods indicated using or by radio resource control (RRC) or medium access control (MAC) signaling.

In an eleventh general aspect of the present disclosure, a wireless communication method implemented by a user equipment (UE) comprising: receiving downlink control information (DCI) transmitted from an eNodeB (eNB); whether to transmit the signal once to the UE, to start the periodic signal transmission to the another UE, or to stop the periodic signal transmission to the another UE. determining a redundancy check (CRC) based only on a radio network temporary identifier (RNTI) scrambling, the DCI being in DCI format 5.

In a twelfth general aspect of the present disclosure, a wireless communication method implemented by a user equipment (UE) comprising receiving first downlink control information (DCI) transmitted from an eNodeB (eNB); , based on the SPS enable/disable field in the first DCI, transmit a signal once to another UE, or start transmitting a periodic signal to said another UE, or stopping the transmission of periodic signals to the UE of the first DCI is in a format formed by further adding an SPS enable/disable field to DCI format 5; receiving a second DCI transmitted from the eNB for the part to send a signal to the eNB, the second DCI being in DCI format 0/1A with all legacy fields enabled; or a format formed by adding the same fields added to DCI format 5 to DCI format 0/1A such that the size of the first DCI is the same as the size of the second DCI A wireless communication method is provided, comprising:

Note that the general or specific embodiments may be implemented as systems, methods, integrated circuits, computer programs, storage media, or any selective combination thereof.

Further benefits and advantages of the disclosed embodiments will be apparent from the specification and drawings. Benefits and/or advantages may be obtained individually through various embodiments and features of the specification and drawings, which need not all be provided in order to obtain one or more of such benefits and/or advantages. .

The foregoing and other features of the present disclosure will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings. The present disclosure, through the use of the accompanying drawings, is provided with the understanding that these drawings depict only some embodiments of the disclosure and are therefore not to be considered limiting of its scope. Further specific and detailed description will be given.

Schematically illustrates an exemplary SPS transmission in D2D or V2X 1 is a schematic block diagram of an eNB according to an embodiment of the present disclosure; FIG. 3 is a flowchart of a wireless communication method implemented by an eNB according to embodiments of the present disclosure; 1 is a block diagram schematically illustrating a UE according to embodiments of the present disclosure; FIG. 3 is a flowchart of a wireless communication method performed by a UE according to embodiments of the present disclosure; 3 is a flowchart of a wireless communication method implemented by an eNB according to embodiments of the present disclosure; 3 is a flowchart of a wireless communication method performed by a UE according to embodiments of the present disclosure; 3 is a flowchart of a wireless communication method implemented by an eNB according to embodiments of the present disclosure; 3 is a flowchart of a wireless communication method performed by a UE according to embodiments of the present disclosure;

The following detailed description refers to the accompanying drawings that form a part thereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. It will be readily understood that aspects of the present disclosure may be arranged, permuted, combined and designed in a wide variety of different configurations, all of which are expressly contemplated and form part of the present disclosure. be.

For D2D or V2X, one resource allocation mode is based on eNB scheduling. In this mode, the eNB sends DCI to the transmitting UE for resource allocation, and the transmitting UE sends signals to the receiving UE based on the resource allocation indicated by the DCI. However, the UE density within a D2D or V2X group can be high, thus resulting in large signaling overhead in the resource allocation process described above. Under this consideration, SPS can be a good resource allocation mechanism to save control overhead. FIG. 1 schematically shows an exemplary SPS transmission in D2D or V2X. The eNB first sends SPS activation signaling to the transmitting UE, and then the transmitting UE periodically transmits signals to the receiving UE after receiving the SPS activation signaling. The signal can be transmitted within a scheduling assignment (SA) period, and the signal can contain both SA and data (as shown in FIG. 1) or only data. If the eNB decides to stop periodic transmission, the eNB will send SPS deactivation signaling to the transmitting UE, and the transmitting UE will stop periodic transmission upon receiving the SPS deactivation signaling, i.e. for the following period: not start.

In this disclosure, an approach for SPS enable/disable in D2D or V2X is proposed. Note that this proposal is applicable to all kinds of D2D or V2X communication. As used herein, UE refers to any terminal device suitable for D2D or V2X, such as a mobile phone, pad, any wireless communication device installed in a vehicle, etc.; refers to any base station suitable for resource allocation in D2D or V2X.

An embodiment of the present disclosure provides an eNB 200 as shown in FIG. 2, which schematically illustrates a block diagram of the eNB 200 according to an embodiment of the present disclosure. The eNB 200 includes a circuit 201 operable to fill the SPS enable/disable field in the DCI with a predetermined bit pattern, and based on the SPS enable/disable field, the first UE performs the second A transmitter operable to transmit a DCI to a first UE to initiate periodic signal transmission to the UE or to stop periodic signal transmission to a second UE. 202, wherein the DCI is in an SPS format formed by employing some or all bits of at least one field of DCI format 5 as an SPS enable/disable field, and at least one The information to be transmitted in the field is indicated using or by radio resource control (RRC) or medium access control (MAC) signaling.

In this embodiment, the eNB 200 transmits a DCI with SPS enable/disable fields to enable or disable SPS transmission of a first UE (transmitting UE) to a second (receiving UE). do. Here, the SPS enable/disable field is a field for instructing SPS transmission enable or stop SPS transmission disable, and can be filled with a predetermined bit pattern. or "1", or some bits are filled with "0" and other bits are filled with "1". When the transmitting UE receives the DCI and detects the SPS enable/disable field, it enables the SPS transmission or disables the initiated SPS transmission based on the SPS enable/disable field. do. For example, if the transmitting UE detects an SPS enable/disable field with all bits "0", the transmitting UE enables SPS transmission to the receiving UE, and the transmitting UE activates the SPS transmission with all bits "1". , the transmitting UE disables SPS transmission to the receiving UE.

In embodiments, the above DCI may be based on DCI format 5 specified in 3GPP TS36.212 with some fields modified. Specifically, the DCI is a format formed by adopting some or all bits of at least one field of DCI format 5 as an SPS enable/disable field (referred to herein as the SPS format). ), for example, the SPS enable/disable field can select 6 bits or more from DCI format 5. LTE Rel. 12/13, DCI format 5 and DCI format 0/1A specified in 3GPP TS 36.212 have the same size and share the same search space, so some or all bits of DCI format 5 are replayed. By utilizing the above SPS format can be made the same size as DCI format 5 and DCI format 0/1A, thus blind decoding time is not increased.

The reason that some or even all fields of DCI format 5 can be reused for SPS enablement/disablement is that eNBs can potentially move some or even any fields from an SPS perspective in D2D or V2X. This is because there is no need to explicitly indicate Therefore, information to be transmitted in the reused field can be indicated by or with RRC or MAC signaling. For example, eNBs transmit DCI in SPS very infrequently, making it impossible to quickly adapt to resource allocation (eg, temporal resource patterns). Therefore, the time resource pattern can be indicated by RRC or MAC signaling, or the time resource pattern can be indicated using RRC or MAC signaling. For example, the eNB can configure a set of time resource patterns via RRC or MAC signaling, and only a few bits in the DCI are used for SPS transmission for specific time resource patterns in the configured set. used to indicate In this way, some bits of the "time resource pattern" field in DCI format 5 can be saved for SPS enable/disable.

In one example, a different Radio Network Temporary Identifier (RNTI) from the RNTI for DCI format 5 (herein ) can be applied to scramble the cyclic redundancy check (CRC) of the DCI in the SPS format. In another example, when the number of bits for identifying SPS activation/deactivation in DCI is large enough to ensure the robustness of SPS activation/deactivation identification, especially in DCI format 5, all field is adopted as the SPS enable/disable field, the RNTI for scrambling the DCI CRC in SPS format is the same as the RNTI for scrambling the DCI CRC in DCI format 5. There may be. As mentioned above, in D2D or V2X, the eNB may not need to dynamically indicate any fields from the SPS perspective. With this in mind, all relevant information regarding SPS can be indicated in RRC or MAC signaling and DCI is only used for SPS activation/deactivation. In this situation, the SPS RNTI may not be necessary due to the number of bits used to identify SPS activation/deactivation. Legacy systems, not D2D or V2X, require the eNB to dynamically control the ACK resource and DCI format type (0 or 1A), so the 'HARQ-ACK resource offset' and the 'format 0/format 1A differentiation flag ” still need to be indicated in the DCI.

Tables 1-5 show some examples of bits in DCI format 5 that are reused for enabling/disabling SPS in V2X or D2D.

Table 1 shows that all bits of all fields in DCI format 5 are used for SPS enable/disable in V2X or D2D. For example, if all bits are set to '0', this means SPS enabled, and if all bits are set to '1', this means SPS disabled.

Table 2 shows that most bits (MSB 6 bits) in the "Temporal Resource Pattern" field of DCI format 5 are used for SPS enable/disable in V2X or D2D.

Table 3 shows that some bits in the "Time Resource Pattern", "TPC Commands for PSCCH and PSSCH", and "Frequency Hopping Flag" fields are used for SPS enable/disable in V2X or D2D. It indicates that

Table 4 shows that some bits in the "Resources for PSCCH" and "Resource Block Allocation and Hopping Resource Allocation" fields are used for SPS enable/disable in V2X or D2D. This example is particularly applicable to the sub-channel concept mentioned in 3GPP RAN1 (see RAN1 contribution R1-156607). When the sub-channel concept is applied, the basic allocation unit is a sub-channel consisting of multiple PRBs, and the PSCCH is placed within a portion of the PRBs within each sub-channel, hence "resource for PSCCH". The fields and "Resource Block Allocation and Hopping Resource Allocation" fields can be simplified. Only some bits of these fields are used for sub-channel indication, other bits can be used for SPS enable/disable in V2X or D2D.

Table 5 shows that enabling and disabling can use different fields, in particular the MSB 6 bits in the "time resource pattern" field are used for SPS enable and all fields are used for SPS disable. be.

Additionally, as shown in FIG. 2, the eNB 200 according to the present disclosure optionally has a central processing unit (CPU) that executes associated programs for processing various data and control operations for each unit within the eNB 200. (Central Processing Unit) 210; ROM (Read Only Memory) 213 for storing various programs necessary for performing various processes and controls by the CPU 210; may include RAM (Random Access Memory) 215 for storing intermediate data generated in the system, and/or storage device 217 for storing various programs, data, and the like. The circuit 201, transmitter 202, CPU 210, ROM 213, RAM 215 and/or storage device 217, etc. are interconnected via a data and/or command bus 220 and are capable of transferring signals therebetween.

Each component described above is not intended to limit the scope of the present disclosure. According to one implementation of the present disclosure, the functionality of circuit 201 and transmitter 202 described above may be implemented by hardware, and CPU 210, ROM 213, RAM 215 and/or storage device 217 described above may not be required. . Alternatively, the functions of circuit 201 and transmitter 202 described above may also be implemented by functional software in combination with CPU 210, ROM 213, RAM 215, and/or storage device 217, etc., described above.

eNB 200 may also comprise a receiver operable to receive signals from the first UE. In one embodiment, when the first UE periodically transmits signals to the second UE, i.e. during SPS transmission, the receiver receives a sidelink buffer status report for the sidelink from the first UE ( BSR) message or Scheduling Request (SR).

FIG. 3 shows a flowchart of a wireless communication method 300 implemented by an eNB (eg, eNB 200) according to an embodiment of the present disclosure. The wireless communication method 300 includes the step of filling 301 an SPS enable/disable field in DCI with a predetermined bit pattern, and based on the SPS enable/disable field, a first UE to a second UE. transmitting 302 a DCI to the first UE to initiate periodic signal transmission of or to stop periodic signal transmission to the second UE; DCI is in an SPS format formed by adopting some or all bits of at least one field of DCI format 5 as an SPS enable/disable field, information to be transmitted in at least one field is indicated with or by RRC or MAC signaling. Details and advantages described above for eNB 200 may also apply to wireless communication method 300 .

Accordingly, embodiments of the present disclosure provide a UE as a transmitting UE and a wireless communication method performed by the transmitting UE.

FIG. 4 schematically shows a block diagram of UE 400 as a transmitting UE, according to an embodiment of the present disclosure. A UE 400 includes a receiver 401 operable to receive DCI transmitted from an eNB and periodic signaling to another UE (receiving UE) based on SPS enable/disable fields in the DCI. and a transmitter 402 operable to initiate transmission or stop transmission of periodic signals to said another UE, the DCI comprising at least one field of DCI format 5. The information that is in the SPS format formed by adopting some or all bits as SPS enable/disable fields and that is to be transmitted in at least one field can be sent with or without RRC or MAC signaling. indicated by Optionally, transmitter 402 does not transmit a sidelink BSR message or SR for the sidelink to the eNB when periodically transmitting signals to the receiving UE.

The UE 400 according to the present disclosure optionally has a CPU (Central Processing Unit) 410 executing related programs for processing various data and control operations of respective units within the UE 400. By the CPU 410 A ROM (Read Only Memory) 413 for storing various programs necessary for various processes and controls, and a RAM for storing intermediate data temporarily generated during processes and controls by the CPU 410. (Random Access Memory) 415 and/or storage device 417 for storing various programs, data, and the like. The receiving portion 401, transmitting portion 402, CPU 410, ROM 413, RAM 415 and/or storage device 417, etc., described above are interconnected via a data and/or command bus 420 and are capable of transferring signals therebetween.

Each component described above is not intended to limit the scope of the present disclosure. According to one implementation of the present disclosure, the functionality of the receiving unit 401 and transmitting unit 402 described above may be implemented by hardware, without the need for the CPU 410, ROM 413, RAM 415 and/or storage 417 described above. good. Alternatively, the functionality of receiver 401 and transmitter 402 described above may also be implemented by functional software in combination with CPU 410, ROM 413, RAM 415, and/or storage device 417, etc., described above.

FIG. 5 shows a flowchart of a wireless communication method 500 implemented by a UE (eg, transmitting UE 400) according to an embodiment of the present disclosure. The wireless communication method 500 receives 501 a DCI transmitted from an eNB and initiates periodic signal transmission to another UE (receiving UE) based on the SPS enable/disable field in the DCI. or stop transmitting periodic signals to said another UE, wherein the DCI sets some or all bits of at least one field of DCI format 5 to SPS valid. The information that is in the SPS format formed by adopting it as a disable/disable field and that is to be transmitted in at least one field is indicated using or by RRC or MAC signaling.

Note that the details and advantages described above for the eNB side are also applicable for the UE side, unless the context indicates otherwise.

In another embodiment, SPS enable/disable can be triggered purely by RNTI and there is no special field used for SPS enable/disable. For example, SPS RNTI 1 is used for SPS activation, SPS RNTI 2 is used for SPS deactivation, and another RNTI is used for non-SPS transmissions (one-time transmissions). Therefore, a UE receiving DCI can decide whether to enable SPS transmission, disable SPS transmission, or perform one-time transmission based on the RNTI that scrambles the CRC of DCI. .

Accordingly, FIG. 6 depicts a flowchart of a wireless communication method 600 implemented by an eNB according to one embodiment of the present disclosure. The wireless communication method 600 includes the step of scrambling 601 the DCI CRC with the RNTI and determining whether the first UE should transmit a signal to the second UE once or periodically transmit a signal to the second UE. transmitting 602 DCI to the first UE to determine whether to start or stop transmitting periodic signals to the second UE based solely on the RNTI; The DCI is in DCI format 5. In this embodiment, the first UE (transmitting UE) performs a one-time transmission purely based on the RNTI used to scramble the CRC of the DCI without changing the format of the DCI. , to enable SPS transmission or to disable SPS transmission. Therefore, the same DCI format can be used for SPS and non-SPS transmissions.

An embodiment of the present disclosure also provides an eNB for implementing the method 600 described above. The eNB includes circuitry operable to scramble the CRC of the DCI with the RNTI and whether the first UE should transmit a signal to the second UE once or periodically transmit a signal to the second UE. a transmitting unit operable to transmit a DCI to the first UE to determine whether to start transmitting the periodic signal to the second UE based solely on the RNTI; and the DCI is in DCI format 5. A block diagram of the eNB in this embodiment can refer to the structure shown in FIG.

FIG. 7 shows a flowchart of a wireless communication method 700 implemented by a UE according to one embodiment of the disclosure. The wireless communication method 700 includes the step of receiving 701 a DCI transmitted from an eNB and determining whether to transmit a signal once to another UE, to initiate periodic transmission of a signal to said another UE, or determining 702 whether to stop transmitting periodic signals to another UE based solely on the RNTI scrambling the CRC of the DCI, the DCI being in DCI format 5;

An embodiment of the present disclosure also provides a UE for performing the method 700 described above. a receiver operable to receive DCI transmitted from an eNB and whether to transmit a signal once to another UE or to initiate periodic transmission of a signal to said another UE; or a circuit operable to determine whether to stop transmitting periodic signals to said another UE based solely on the RNTI scrambling the CRC of the DCI, wherein the DCI is in DCI format 5. The block diagram of the UE in this embodiment can refer to the structure shown in FIG. 4, except that the transmitter 402 is replaced with the circuit described above.

In another embodiment, a new field for SPS enable/disable can be added in DCI format 5, DCI format 0/1A is also added with the new field, or DCI format 0/1A is added with the new field. 1A size with the DCI format 5 size being modified, e.g., the "CFI" field (3 bits) regardless of CA or non-CA, the "UL index" field (2 bits) regardless of FDD or TDD, and To be the same as the "downlink allocation index" (2 bits) regardless of FDD or TDD, FDD/TDD, downlink/uplink, CA/non-CA (if V2X or D2D SPS is enabled) All legacy fields in DCI format 0/1A are automatically enabled regardless of carrier aggregation). If the DCI format 0/1A size is still not large enough to align with the modified DCI format 5, padding bits can be added. In this way, the sizes of DCI format 0/1A and DCI format 5 after modification are still kept the same without increasing the blind decoding time.

Accordingly, FIG. 8 depicts a flowchart of a wireless communication method 800 implemented by an eNB according to one embodiment of the present disclosure. The wireless communication method 800 includes the step of filling 801 the SPS enable/disable field in the first DCI with a predetermined bit pattern, and based on the SPS enable/disable field, the first UE can to transmit the signal once to the UE, to start transmitting the periodic signal to the second UE, or to stop transmitting the periodic signal to the second UE, the first a step 802 of transmitting a first DCI to a UE, the first DCI being in a format formed by further adding an SPS enable/disable field to DCI format 5; In step 803, one UE transmits a second DCI to a first UE for signaling to an eNB, the second DCI is DCI format 0/1A with all legacy fields enabled. or by adding the same fields added to DCI format 5 to DCI format 0/1A such that the size of the first DCI is the same as the size of the second DCI. and sending step 803, in the format to be sent. Note that the above-described steps in method 800 are not necessarily performed in the order described above. For example, step 803 can be performed before steps 801 and 802.

In method 800, the first DCI is in DCI format 5 that has been modified by adding SPS enable/disable fields and is used for D2D or V2X. The SPS enable/disable field of DCI format 5 that has been modified indicates whether the first UE (transmitting UE) should perform a one-time transmission to the second UE (receiving UE) or not. or stop SPS transmission to the second UE. The second DCI is used for legacy wireless communication (i.e. communication between eNB and UE) and is modified by adding the same SPS enable/disable fields added to DCI format 5. or in the original DCI format 0/1A with all legacy fields enabled such that the first DCI and the second DCI have the same size.

Table 6 shows that new fields used to enable/disable SPS are added in both DCI format 0/1A and DCI format 5. Thus, DCI format 0/1A still maintains the same size as DCI format 5.

Table 7 shows that DCI format 0/1A size is maximized by enabling all fields regardless of FDD/TDD, downlink/uplink, and CA/non-CA, and new fields are added in DCI format 5. indicates that In this way, the two DCIs can also keep the same size so as not to increase blind decoding time.

An embodiment of the present disclosure also provides an eNB for implementing the method 800 described above. The eNB has circuitry operable to fill the SPS enable/disable field in the first DCI with a predetermined bit pattern, and based on the SPS enable/disable field, the first UE can perform the first To transmit a signal once to two UEs, to start transmitting periodic signals to a second UE, or to stop transmitting periodic signals to a second UE, the first a transmitter operable to transmit a first DCI to the UE of the first DCI, the first DCI being in a format formed by further adding an SPS enable/disable field to DCI format 5; The transmitting unit is also operable to transmit a second DCI to the first UE for the first UE to transmit a signal to the eNB, the second DCI including all legacy fields DCI format the same fields as in DCI format 0/1A enabled or added to DCI format 5 such that the size of the first DCI is the same as the size of the second DCI. It is in a format formed by adding to 0/1A. A block diagram of the eNB in this embodiment can refer to the structure shown in FIG.

On the transmitting UE side, FIG. 9 shows a flowchart of a wireless communication method 900 performed by a UE according to embodiments of the present disclosure. A wireless communication method 900 includes step 901 of receiving a first DCI transmitted from an eNB and transmitting a signal once to another UE based on the SPS enable/disable field in the first DCI. , starting periodic signal transmission to said another UE or stopping periodic signal transmission to said another UE step 902, wherein a first DCI is SPS enable/disable; Step 902, in a format formed by adding more fields to DCI format 5; and Step 903, the transmitter receiving a second DCI sent from the eNB for signaling to the eNB; , the second DCI is in DCI format 0/1A with all legacy fields enabled, or in DCI format 5 so that the size of the first DCI is the same as the size of the second DCI. receiving 903 in a format formed by adding to DCI format 0/1A the same fields that are added to DCI format 0/1A.

An embodiment of the present disclosure also provides a UE for performing the method 900 described above. A UE transmits a signal once to another UE based on a receiver unit operable to receive a first DCI transmitted from an eNB and an SPS enable/disable field in the first DCI. a transmitting unit operable to perform, start transmitting periodic signals to the another UE, or stop transmitting periodic signals to the another UE; The DCI is in a format formed by further adding the SPS enable/disable fields to DCI format 5, the receiver also uses the second and the second DCI is in DCI format 0/1A with all legacy fields enabled, or the size of the first DCI is the size of the second DCI is in the format formed by adding to DCI format 0/1A the same fields that are added to DCI format 5 to be the same size as the size of DCI format 0/1A. The block diagram of the UE in this embodiment can refer to the structure shown in FIG.

The present disclosure can be implemented in software, hardware, or software cooperating with hardware. Each functional block used in the description of each embodiment described above can be implemented by an LSI as an integrated circuit, and each process described in each embodiment can be controlled by the LSI. They may be formed individually as chips, or they may form a single chip to include some or all of the functional blocks. They can include data inputs and outputs coupled thereto. Here, LSI may be called IC, system LSI, super LSI, or ultra LSI depending on the degree of integration. However, the technique of implementing integrated circuits is not limited to LSIs, and may be implemented using dedicated circuits or general-purpose processors. In addition, an FPGA (Field Programmable Gate Array) that can be programmed after the LSI is manufactured, or a reconfigurable processor that can reconfigure the connections and settings of circuit cells placed inside the LSI good too.

This disclosure is intended to be variously changed or modified by those skilled in the art based on the descriptions presented in this specification and known art without departing from the content and scope of this disclosure, and such It should be noted that such modifications and applications fall within the scope of the claims to be protected. Furthermore, the components of the above-described embodiments may be combined arbitrarily without departing from the scope of disclosure.

Embodiments of the present disclosure may provide at least the following subject matter.

1. an eNodeB (eNB),
circuitry operable to fill a semi-static scheduling (SPS) enable/disable field in downlink control information (DCI) with a predetermined bit pattern;
Based on the SPS enable/disable field, the first user equipment (UE) initiates transmission of periodic signals to the second UE or the transmission of periodic signals to the second UE. a transmitting unit operable to transmit a DCI to the first UE to stop transmission, the DCI setting some or all bits of at least one field of DCI format 5 to SPS enable/ The information that is in the SPS format formed by adopting it as an invalidation field and that is to be transmitted in at least one field, is transmitted using or by radio resource control (RRC) or medium access control (MAC) signaling. eNodeB (eNB) shown.

2. All bits of all fields in DCI format 5 are adopted as SPS enable/disable fields,
The eNodeB of 1, wherein the Radio Network Temporary Identifier (RNTI) for scrambling the cyclic redundancy check (CRC) of DCI in SPS format is the same as the RNTI for scrambling the CRC of DCI in DCI format 5.

3. a receiver operable to receive signals from a first UE, wherein when the first UE periodically transmits signals to the second UE, the receiver receives sidelink signals from the first UE; 3. The eNodeB of claim 1 or 2 that does not receive sidelink buffer status report (BSR) messages or scheduling requests (SR) for.

4. an eNodeB (eNB),
a circuit operable to scramble a cyclic redundancy check (CRC) of downlink control information (DCI) with a radio network temporary identifier (RNTI);
Whether the first user equipment (UE) should transmit a signal to the second UE once, initiate a periodic transmission of a signal to the second UE, or periodically transmit a signal to the second UE. an eNodeB (eNB), comprising: a transmitting unit operable to transmit a DCI to a first UE to determine whether to stop transmitting signals based solely on the RNTI, the DCI being in DCI format 5; .

5. an eNodeB (eNB),
circuitry operable to fill a semi-static scheduling (SPS) enable/disable field in first downlink control information (DCI) with a predetermined bit pattern;
Based on the SPS enable/disable field, whether the first user equipment (UE) transmits a signal to the second UE once or initiates periodic transmission of the signal to the second UE or a transmitter operable to transmit a first DCI to the first UE to stop transmitting periodic signals to the second UE, the first DCI being SPS-enabled In a format formed by further adding an enable/disable field to DCI Format 5,
The transmitting unit is also operable to transmit a second DCI to the first UE for the first UE to transmit a signal to the eNB, the second DCI including all legacy fields DCI format the same fields as in DCI format 0/1A enabled or added to DCI format 5 such that the size of the first DCI is the same as the size of the second DCI. eNodeB (eNB), in a format formed by adding to 0/1A.

6. A user equipment (UE),
a receiver operable to receive downlink control information (DCI) transmitted from an eNodeB (eNB);
Based on the SPS enable/disable field in the DCI, act to initiate periodic signal transmission to another UE or stop periodic signal transmission to said another UE. where the DCI is in an SPS format formed by employing some or all bits of at least one field of DCI format 5 as an SPS enable/disable field, and at least one The information to be transmitted in the field is indicated to the user equipment (UE) using or by radio resource control (RRC) or medium access control (MAC) signaling.

7. All bits of all fields in DCI format 5 are adopted as SPS enable/disable fields,
7. The user equipment of 6, wherein the Radio Network Temporary Identifier (RNTI) for scrambling the cyclic redundancy check (CRC) of DCI in SPS format is the same as the RNTI for scrambling the CRC of DCI in DCI format 5.

8. 8. According to 6 or 7, the transmitting unit does not transmit a Sidelink Buffer Status Report (BSR) message or a Scheduling Request (SR) for the sidelink to the eNB when periodically transmitting signals to the other UE. user equipment.

9. A user equipment (UE),
a receiver operable to receive downlink control information (DCI) transmitted from an eNodeB (eNB);
DCI determines whether to transmit a signal once to another UE, to start transmitting a periodic signal to the another UE, or to stop transmitting a periodic signal to the another UE. circuitry operable to determine a cyclic redundancy check (CRC) based solely on a radio network temporary identifier (RNTI) scrambling, wherein the DCI is in DCI format 5.

10. A user equipment (UE),
a receiver operable to receive first downlink control information (DCI) transmitted from an eNodeB (eNB);
Based on the SPS enable/disable field in the first DCI, transmit a signal to another UE once, initiate periodic transmission of a signal to the another UE, or a transmitter operable to stop transmitting periodic signals to the UE, the first DCI having a format formed by further adding an SPS enable/disable field to DCI format 5; can be,
the receiver is also operable to receive a second DCI transmitted from the eNB for the transmitter to transmit a signal to the eNB;
The second DCI is either in DCI format 0/1A with all legacy fields enabled, or in DCI format 5 so that the size of the first DCI is the same as the size of the second DCI. A user equipment (UE) in a format formed by adding the same fields to DCI format 0/1A that are being added.

11. A wireless communication method implemented by an eNodeB (eNB), comprising:
filling a semi-static scheduling (SPS) enable/disable field in downlink control information (DCI) with a predetermined bit pattern;
Based on the SPS enable/disable field, the first user equipment (UE) initiates the transmission of periodic signals to the second UE or the transmission of periodic signals to the second UE. sending a DCI to the first UE to stop transmission, the DCI adopting some or all bits of at least one field of DCI format 5 as an SPS enable/disable field. wherein the information to be transmitted in at least one field is indicated using or by radio resource control (RRC) or medium access control (MAC) signaling, in an SPS format formed by .

12. All bits of all fields in DCI format 5 are adopted as SPS enable/disable fields,
12. The wireless communication method of claim 11, wherein the Radio Network Temporary Identifier (RNTI) for scrambling the cyclic redundancy check (CRC) of DCI in SPS format is the same as the RNTI for scrambling the CRC of DCI in DCI format 5. .

13. A wireless communication method implemented by an eNodeB (eNB), comprising:
scrambling a cyclic redundancy check (CRC) of downlink control information (DCI) with a radio network temporary identifier (RNTI);
Whether the first user equipment (UE) should transmit a signal to the second UE once, initiate a periodic transmission of a signal to the second UE, or periodically transmit a signal to the second UE. and transmitting DCI to the first UE to determine whether to stop transmitting signals based solely on the RNTI, wherein the DCI is in DCI format 5.

14. A wireless communication method implemented by an eNodeB (eNB), comprising:
filling a semi-static scheduling (SPS) enable/disable field in the first downlink control information (DCI) with a predetermined bit pattern;
Based on the SPS enable/disable field, whether the first user equipment (UE) transmits a signal to the second UE once or initiates periodic transmission of the signal to the second UE or sending a first DCI to the first UE to stop transmitting periodic signals to the second UE, the first DCI replacing the SPS enable/disable field with the DCI transmitting in a format formed by further appending to Format 5;
For the first UE to send a signal to the eNB, sending a second DCI to the first UE, the second DCI being DCI format 0/1A with all legacy fields enabled or by adding the same fields added to DCI format 5 to DCI format 0/1A such that the size of the first DCI is the same as the size of the second DCI. A method of wireless communication, comprising the steps of:

15. A wireless communication method implemented by a user equipment (UE), comprising:
receiving downlink control information (DCI) transmitted from an eNodeB (eNB);
starting or stopping periodic signal transmission to another UE based on the SPS enable/disable field in DCI; DCI shall be in an SPS format formed by adopting some or all bits of at least one field of DCI format 5 as an SPS enable/disable field and shall be transmitted in at least one field information is indicated using or by radio resource control (RRC) or medium access control (MAC) signaling.

16. All bits of all fields in DCI format 5 are adopted as SPS enable/disable fields,
16. The wireless communication method of claim 15, wherein the Radio Network Temporary Identifier (RNTI) for scrambling the cyclic redundancy check (CRC) of DCI in SPS format is the same as the RNTI for scrambling the CRC of DCI in DCI format 5. .

17. A wireless communication method implemented by a user equipment (UE), comprising:
receiving downlink control information (DCI) transmitted from an eNodeB (eNB);
DCI determines whether to transmit a signal once to another UE, to start transmitting a periodic signal to the another UE, or to stop transmitting a periodic signal to the another UE. determining a cyclic redundancy check (CRC) based only on a radio network temporary identifier (RNTI) scrambling, wherein the DCI is in DCI format 5.

18. A wireless communication method implemented by a user equipment (UE), comprising:
receiving first downlink control information (DCI) transmitted from an eNodeB (eNB);
Based on the SPS enable/disable field in the first DCI, transmit a signal to another UE once, initiate periodic transmission of a signal to the another UE, or ceasing transmission of periodic signals to the UE, the first DCI being in a format formed by further adding an SPS enable/disable field to DCI format 5;
A step of receiving a second DCI transmitted from the eNB for the transmitter to send a signal to the eNB, the second DCI being in DCI format 0/1A with all legacy fields enabled. or by adding the same fields added to DCI format 5 to DCI format 0/1A such that the size of the first DCI is the same as the size of the second DCI. A wireless communication method, comprising: receiving in a format.

Additionally, embodiments of the present disclosure may also provide an integrated circuit that includes module(s) for performing the step(s) of each of the communication methods described above. Further, embodiments of the present invention provide a computer readable storage medium storing a computer program comprising program code for performing the step(s) of each of the communication methods described above when executed on a computing device. You can also

Claims (11)

A first wireless communication device,
A first formed by adding an enable/disable field used for enabling/disabling Semi Persistent Scheduling (SPS) to a first Downlink Control Information (DCI) format used for sidelink scheduling. a receiver for receiving the DCI of
a transmitter for transmitting or deactivating data to a second wireless communication device based on the enable/disable field;
and
The enable/disable field indicates that the first wireless communication device transmits or stops the SPS data for the sidelink to the second wireless communication device,
A second DCI formed without adding the enable/disable field to the first DCI format is a second DCI used for scheduling communication between a base station and the first wireless communication device. is the same size as the third DCI formed using the format,
the first DCI and the third DCI are adjusted to the same size using padding bits;
A first wireless communication device. The first DCI is used for SPS communication between the first wireless communication device and the second wireless communication device,
A first wireless communication device according to claim 1 . wherein the second DCI format is DCI format 0/1A;
A first wireless communication device according to claim 1 . cyclic redundancy check (CRC) bits of the first DCI are scrambled with an SPS-specific Radio Network Temporary Identifier (RNTI);
A first wireless communication device according to claim 1 . the first DCI includes a time resource field that indicates time resources from a subset determined by RRC signaling;
A first wireless communication device according to claim 1 . a first wireless communication device ,
A first formed by adding an enable/disable field used for enabling/disabling Semi Persistent Scheduling (SPS) to a first Downlink Control Information (DCI) format used for sidelink scheduling. a receiving step of receiving the DCI of
a transmitting step of transmitting or deactivating data to a second wireless communication device based on the enable/disable field;
and
The enable/disable field indicates that the first wireless communication device transmits or stops the SPS data for the sidelink to the second wireless communication device,
A second DCI formed without adding the enable/disable field to the first DCI format is a second DCI used for scheduling communication between a base station and the first wireless communication device. is the same size as the third DCI formed using the format,
the first DCI and the third DCI are adjusted to the same size using padding bits;
wireless communication method. The first DCI is used for SPS communication between the first wireless communication device and the second wireless communication device,
The wireless communication method according to claim 6. wherein the second DCI format is DCI format 0/1A;
The wireless communication method according to claim 6. cyclic redundancy check (CRC) bits of the first DCI are scrambled with an SPS-specific Radio Network Temporary Identifier (RNTI);
The wireless communication method according to claim 6. the first DCI includes a time resource field that indicates time resources from a subset determined by RRC signaling;
The wireless communication method according to claim 6. A first formed by adding an enable/disable field used for enabling/disabling Semi Persistent Scheduling (SPS) to a first Downlink Control Information (DCI) format used for sidelink scheduling. a process of receiving the DCI of
a process of transmitting or deactivating data to a second wireless communication device based on the enable/disable field;
to control the
The enable/disable field indicates that the first wireless communication device transmits or stops the SPS data for the sidelink to the second wireless communication device,
A second DCI formed without adding the enable/disable field to the first DCI format is a second DCI used for scheduling communication between a base station and the first wireless communication device. is the same size as the third DCI formed using the format,
the first DCI and the third DCI are adjusted to the same size using padding bits;
integrated circuit.

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