KR101971409B1 - Method and Apparatus for Controlling Multiple Transmission of Control Information Dynamically in Wireless Communication Systems - Google Patents

Abstract

The present disclosure relates to a method and apparatus for dynamically controlling multiple transmissions of control information in a wireless communication system.
A method for dynamically controlling transmission and reception of control information in a wireless communication system according to an embodiment of the present invention is a method in which a base station transmits indication information for controlling multiplexing to a user terminal performing multiplex transmission of control information through a physical channel A MAC (Medium Access Control) layer or an RRC (Radio Resource Control) signaling, which is an upper layer of the physical channel; And multiplexing the control information from the user terminal when the indication information indicates multiplexing of the user terminal.

Description

[0001] The present invention relates to a method and apparatus for dynamically controlling multiple transmissions of control information in a wireless communication system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for controlling control information transmitted on an element carrier in a wireless communication system using one or more component carriers (CC) to be transmitted in multiple.

As communications systems evolved, consumers, such as businesses and individuals, used a wide variety of wireless terminals.

In a mobile communication system such as the current 3GPP family Long Term Evolution (LTE) and LTE-A (LTE Advanced), a high-speed and large-capacity communication system capable of transmitting and receiving various data such as video and wireless data, , It is necessary to develop a technology capable of transmitting large-capacity data in accordance with a wired communication network, and an appropriate error detection method that can improve the system performance by minimizing loss of information loss and increasing system transmission efficiency is an essential element .

In addition, various technologies are provided to confirm whether information to be transmitted and received is correctly received. As the communication system develops, there has been a demand for a technology for verifying the transmission / reception information more flexibly and expandably. Particularly, when a plurality of antennas are used or various carriers are used, control information for transmission / reception of each data increases as data to be transmitted / received increases. Accordingly, there is a need for a scheme for transmitting / receiving control information in multiple ways so that control information can be exchanged more efficiently between devices.

The present invention relates to a wireless communication system, which provides a terminal and a base station for controlling transmission and reception of control information in a wireless communication system, and a control method necessary for these devices to transmit and receive control information in multiple ways have.

A method for dynamically controlling transmission / reception of control information in a wireless communication system according to an embodiment of the present invention for realizing the above-mentioned problem is a method in which a base station transmits a control command to a user terminal Transmitting information through a physical channel or an MAC (Medium Access Control) layer or an RRC (Radio Resource Control) signaling, which is an upper layer of the physical channel; And multiplexing the control information from the user terminal when the indication information indicates multiplexing of the user terminal.

A method for dynamically controlling transmission and reception of control information in a wireless communication system according to another exemplary embodiment of the present invention includes the steps of transmitting instruction information for controlling multiplex transmission of control information from a base station to a user terminal through a physical channel, (MAC) layer or Radio Resource Control (RRC) signaling; And multiplexing the control information when the indication information indicates multiplexing of the user terminal.

An apparatus for dynamically controlling transmission and reception of control information in a wireless communication system according to another embodiment of the present invention includes a controller for generating indication information for controlling multiplex transmission to a user terminal performing multiplex transmission of control information, (MAC) layer or RRC (Radio Resource Control) signaling, which is an upper layer of the physical channel, and a transmission section for transmitting the indication information to the user terminal And a receiver for receiving the control information from the user terminal in multiple.

An apparatus for dynamically controlling transmission and reception of control information in a wireless communication system according to another embodiment of the present invention includes a transmitter for multiplexing control information to a base station, (MAC) layer or Radio Resource Control (RRC) signaling, which is an upper layer of the physical channel, and whether the indication information indicates multiplexing of the user terminal, And a control unit for controlling the transmitting unit to transmit the information.

1 illustrates a wireless communication system to which embodiments of the present disclosure are applied.
2 is a diagram for dynamically controlling PUCCH multiplex transmission by adding indication information to a PDCCH according to an embodiment of the present invention.
3 is a diagram illustrating an example of controlling multiple PUCCH transmissions by adding 1 bit to DCI format according to an embodiment of the present invention.
4 is a diagram illustrating an example of controlling multiple PUCCH transmissions by adding 2 bits to the DCI format according to an embodiment of the present invention.
5 is a diagram illustrating an example of controlling multiple PUCCH transmissions by adding 2 bits to another DCI format according to another embodiment of the present invention.
6 is a diagram illustrating an example of controlling multiple PUCCH transmissions using a specific bit of a PDCCH DCI format according to an embodiment of the present invention.
7 is a diagram illustrating an example of detailed control of multiple PUCCH transmission schemes using specific bits of the PDCCH DCI format according to an embodiment of the present invention.
8 is a diagram illustrating a specific bit of a signal to be transmitted through a PDCCH according to an embodiment of the present invention to indicate multiple PUCCH transmission or single PUCCH transmission.
FIG. 9 is a diagram in which multiple PUCCH transmissions are activated or deactivated according to a signal scrambled and transmitted by a PDCCH according to an exemplary embodiment of the present invention.
10 is a diagram for activating or deactivating multiple PUCCH transmissions in an upper layer of the physical layer according to an embodiment of the present disclosure.
11 is a diagram illustrating a specific bit of a signal to be transmitted through a PDCCH according to an embodiment of the present invention to indicate multiple PUCCH transmission or single PUCCH transmission.
FIG. 12 is a diagram in which multiple PUCCH transmissions are activated or deactivated according to a signal scrambled and transmitted by a PDCCH according to an exemplary embodiment of the present invention.
13 is a diagram for activating or deactivating transmission of multiple PUCCHs using MAC CE or RRC signaling according to an embodiment of the present disclosure.
14 is a diagram showing a configuration of a base station for dynamically controlling multiplex transmission / reception of control information in a wireless communication system.
15 is a diagram illustrating a configuration of a user terminal that dynamically controls multiplex transmission / reception of control information in a wireless communication system.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 illustrates a wireless communication system to which embodiments of the present disclosure are applied.

Wireless communication systems are widely deployed to provide various communication services such as voice, packet data, and the like.

1, a wireless communication system includes a user equipment (UE) 10 and a base station 20 (BS, or eNB). The terminal 10 in this specification is a comprehensive concept of a user terminal in wireless communication and is a concept not only for UE (User Equipment) in WCDMA, LTE and HSPA but also for MS (Mobile Station), GSM ), A subscriber station (SS), a wireless device, and the like.

A base station 20 or a cell generally refers to a station that communicates with the UE 10 and includes a Node-B, an evolved Node-B, a sector, Site, a base transceiver system (BTS), an access point, a relay node, and the like

That is, in the present specification, the base station 20 or the cell is a comprehensive (non-limiting) example of a part or function covered by BSC (Base Station Controller) in CDMA, NodeB in WCDMA, eNB in LTE, And is meant to encompass various coverage areas such as megacell, macrocell, microcell, picocell, femtocell, and relay node communication range.

Herein, the terminal 10 and the base station 20 are used in a broad sense as the two transmitting and receiving subjects used to implement the technical or technical idea described in the present specification and are not limited by a specific term or word . The terminal 10 and the base station 20 are used in a broad sense as two (uplink or downlink) transmitting and receiving subjects used to implement the technology or technical idea described in the present invention, . Here, the uplink (uplink, UL, or uplink) refers to a method of transmitting and receiving data to and from the base station 20 by the terminal 10, and the downlink (DL, And transmits the data to the terminal 10 via the network.

There are no restrictions on multiple access schemes applied to wireless communication systems. Various multiple access schemes such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), OFDM-FDMA, OFDM- Can be used.

The uplink transmission and the downlink transmission may be time division duplex (TDD) transmission using different time periods, or FDD (Frequency Division Duplex) transmission using different frequencies.

An embodiment of the present invention can be applied to asynchronous wireless communication that evolves into LTE and LTE-advanced via GSM, WCDMA, and HSPA, and synchronous wireless communication that evolves into CDMA, CDMA-2000, and UMB. The present invention should not be construed as limited to or limited to a specific wireless communication field and should be construed as including all technical fields to which the idea of the present invention can be applied.

On the other hand, in LTE, uplink and downlink are configured based on one carrier or carrier pair to form a standard. The uplink and the downlink transmit control information through a control channel such as a Physical Downlink Control Channel (PDCCH), a Physical Control Format Indicator CHannel (PCFICH), a Physical Hybrid ARQ Indicator CHannel (PHICH), a Physical Uplink Control CHannel And a data channel such as a Physical Downlink Shared CHannel (PDSCH), a Physical Uplink Shared CHannel (PUSCH), and the like.

In LTE-A, a single-carrier specification is based on LTE, and several combinations of bands with bandwidths less than 20 MHz are discussed, while discussing component carrier bands with bandwidths above 20 MHz. The discussion on multi-carrier aggregation in LTE-A basically takes into consideration the backward compatibility based on the basic specification of LTE, and up to five carriers are considered in uplink and downlink. Of course, the five carriers may be increased or decreased depending on the environment of the system, and the present invention is not limited thereto.

In the case of carrier aggregation in LTE-A, since the number of element carriers is plural, the amount of control information transmitted through the control channel of the uplink can be increased by the number of element carriers. However, even if the number of control information increases a lot, it may take more than a certain time to transfer the control information if it is sequentially transmitted. Hereinafter, a method for dynamically controlling the simultaneous transmission of control information will be described. If the control information is not dynamically controlled at the same time, the control information may not cope with the sudden increase.

For the sake of an understanding of the detailed description, in the present specification, a method for controlling multiple PUCCH transmissions within one subframe or within a preset time range around a PUCCH used in LTE or LTE-A systems as control information . Hereinafter, the base station will focus on the eNB and the user terminal will focus on the UE.

An embodiment of the present invention can be applied to a carrier aggregation (hereinafter referred to as " CA "). CA refers to an environment in which a base station and a terminal transmit and receive signals using a plurality of element carriers. The plurality of element carriers may exist adjacent to each other or may be spaced apart from each other in frequency band. Also, the number of downlink component carriers and the number of uplink component carriers may be the same or may not be the same. On the other hand, a plurality of element carriers may have one or more primary component carriers (PCC) and a secondary component carrier (SCC) other than a PCC. The main measurement signal or control information can be transmitted and received through the PCC, and the SCC can be allocated through the PCC.

One embodiment of a method by which the eNB informs the UE to transmit two or more PUCCHs simultaneously is to use the PDCCH. Hereinafter, the control information transmitted through the PDCCH will be referred to as downlink control information (DCI), and the DCI has different purposes for use according to the format thereof. Hereinafter, transmission and reception of signals through channels such as PDCCH, PDSCH, PUCCH, and PUSCH will be described as transmission / reception or transmission of PDCCH, PDSCH, PUCCH, and PUSCH, respectively.

2 is a diagram for dynamically controlling PUCCH multiplex transmission by adding indication information to a PDCCH according to an embodiment of the present invention. In FIG. 2, multiple PUCCH transmissions may signal the transmission of multiple PUCCHs by adding a triggering bit, which is indicative information, in the PDCCH. That is, one bit or two bits may be added to the DCI formats in the UE-specific search space to use as a triggering bit for instructing transmission of multiple PUCCHs. This is applicable to the entire DCI format. Of course, the DCI format necessary for DL allocation can be applied to a variety of DCI formats in order to trigger PUCCH multiplex transmission, though it is not necessarily applicable.

In FIG. 2, transmission of PDCCH and PUCCH is indicated. For convenience of explanation, the PDSCH and the PUSCH are not included in the drawing, but the PDSCH and the PUSCH may be included depending on the transmission environment of the eNB and the UE and the necessity. In FIG. 2, the eNB 210 transmits a PDCCH like 212. At this time, the PDSCH may be selectively present. 212, the triggering bit for indicating multiple PUCCHs is On. The detailed configuration of the triggering bit will be described later. Since the triggering bit is On, the UE 220 transmits multiple PUCCHs 222 after a predetermined time. On the other hand, if the eNB 210 transmits a PDCCH with multiple PUCCH triggering bits turned off as in 214, the UE 220 transmits only one PUCCH as in 224. Here, the time interval until the UE 220 receives the PDCCH of 212 and transmits the PUCCH of 222 and the time interval between the reception of the PDCCH of 214 and the transmission of the PUCCH of 224 depends on whether the transmission scheme is FDD or TDD different. That is, when the UE receives the PDCCH in the subframe n, the transmission time point of the PUCCH is performed in the subframe n + k, k is 4 in the FDD, and in the case of TDD, Respectively.

[Table 1]

3 is a diagram illustrating an example of controlling multiple PUCCH transmissions by adding 1 bit to DCI format according to an embodiment of the present invention.

As described above, one bit can be added to the DCI format and used as instruction information for controlling the transmission of multiple PUCCHs. The transmission of multiple PUCCHs can be performed in various ways, i) when transmitting PUCCH in multiple in PCC, and ii) when transmitting PUCCH in multiple in PCC and SCC. Table 2 shows the configuration of the triggering bit 1bi information indicating multiple PUCCH transmissions in one UL PCC.

[Table 2]

An example of operation according to the configuration of Table 2 is Case A of FIG. If the 1 bit triggering bit added to the PDCCH in the eNB 311 is set to '0' as 312, then the UE 321 is in a state in which the transmission of multiple PUCCHs is not triggered (no triggering) One PUCCH is transmitted as shown in FIG. On the other hand, if the 1-bit triggering bit added to the PDCCH in the eNB 311 is set to '1' as 314, the transmission of multiple PUCCHs is triggered as indicated in Table 2. Thus, two PUCCHs such as 324 are transmitted in multiple in the UL PCC. Of course, when the triggering bit becomes '1', the eNB 311 and the UE 321 can transmit the PUCCH in multiple times according to the scheme established in the uplink signaling process such as RRC. Herein, in the present specification, transmission of multiple PUCCHs according to the RRC configuration means that information on how many PUCCHs to be transmitted in a certain CC through the RRC is shared between the eNB and the UE. Here, CC may be one or more, and when the length of the triggering bit increases, one or more multiple PUCCH transmission environments may be variously set. For example, when the two PUCCHs are set to RRC, a method of sending K PUCCHs in CC1 may be set in the first RRC setting, and N (NACK) in CC1 and CC may be set in the second RRC setting And M PUCCH transmission schemes can be set.

Even if the RRC setting is not set, the multiple PUCCH transmission method indicated by the triggering bit can be set to match the network environment. In other words, unlike Table 2, the setting of Table 3 is also possible.

[Table 3]

If the 1-bit triggering bit added to the PDCCH in the eNB 361 in Case B is set to '0' as 362, since transmission of multiple PUCCHs is triggered as indicated in Table 3, The mobile station 371 transmits one PUCCH as shown at 372. [ On the other hand, if the 1-bit triggering bit added to the PDCCH in the eNB 361 is set to '1' as 364, transmission of multiple PUCCHs is triggered as indicated in Table 3. [ Therefore, two PUCCHs are multiplexed as in 374. Unlike Case A, one PUCCH transmission is made in the UL PCC and one PUCCH transmission is made in the UL SCC. Of course, when the triggering bit becomes '1', the PUCCH can be transmitted in multiple according to the scheme set in the uplink signaling process such as RRC as described above.

A method using one bit of triggering bit is as follows according to various embodiments. It is possible to instruct not only PUCCH multiplex transmission in PCC or SCC but also PUCCH in many SCC such as PCC, SCC1 and SCC2 as shown in Table 2 and 3.

4 is a diagram illustrating an example of controlling multiple PUCCH transmissions by adding 2 bits to the DCI format according to an embodiment of the present invention. Unlike FIG. 3 and Tables 2 and 3, since transmission of the PUCCH is controlled by two bits, it is possible to instruct PUCCH multiplex transmission in three different ways. One embodiment for setting the triggering bit is shown in Table 4.

[Table 4]

As shown in FIG. 4, if the 2-bit triggering bit added to the PDCCH in the eNB 411 is set to '00' as 412, the transmission of multiple PUCCHs is triggered (no triggering) The UE 421 transmits one PUCCH as shown at 422. [ On the other hand, if the 2-bit triggering bit added to the PDCCH in the eNB 411 is set to '01' as 414, transmission of multiple PUCCHs is triggered as indicated in Table 4. [ Thus, two PUCCHs such as 424 are transmitted in multiple in the UL PCC. When the 2-bit triggering bit added to the PDCCH in the eNB 411 is set to '10' as 416, three PUCCHs are transmitted (426) in the UL PCC as indicated in Table 4. Also, if the 2 bit triggering bit added to the PDCCH in the eNB 411 is set to '11' as 418, then four PUCCHs are transmitted (428) in the UL PCC as indicated in Table 4.

As described above, the detailed transmission of multiple PUCCH transmissions can be set such that the information indicated by the triggering bit is set as shown in Table 4 and the transmission information can be predefined by the RRC.

5 is a diagram illustrating an example of controlling multiple PUCCH transmissions by adding 2 bits to another DCI format according to another embodiment of the present invention. The transmission of the PUCCH is controlled by two bits, and unlike FIG. 4 and Table 4, the PUCCH can be controlled to be transmitted in a plurality of CCs. One embodiment for setting the triggering bit is shown in Table 5.

[Table 5]

As shown in FIG. 5, if the 2-bit triggering bit added to the PDCCH in the eNB 511 is set to '00' as 512, the transmission of the multiple PUCCH is not triggered (no triggering) One PUCCH is transmitted as shown in FIG. On the other hand, if the 2-bit triggering bit added to the PDCCH in the eNB 511 is set to '01' as 514, transmission of multiple PUCCHs is triggered as indicated in Table 5. [ Therefore, as in 524, a single PUCCH is transmitted in the UL PCC, and a total of two PUCCHs are transmitted in the UL SCC1 to the PUCCH. If the 2-bit triggering bit added to the PDCCH in the eNB 511 is set to '10' as 516, three PUCCHs are multiplexed as indicated in Table 5. [ That is, as in 526, one PUCCH in UL PCC, PUCCH in UL SCC1, and three PUCCHs in PUCCH in UL SCC2 are multiplexed. Similarly, if the 2-bit triggering bit added to the PDCCH in the eNB 511 is set to '11' as 518, then four PUCCHs are multiplexed as indicated in Table 5. [ That is, as in 528, one PUCCH in UL PCC, a PUCCH in UL SCC1, a PUCCH in UL SCC2, and four PUCCHs in PUCCH in UL SCC3 are multiplexed.

As described above, the detailed transmission of multiple PUCCH transmissions can be set such that the information indicated by the triggering bit is set as shown in Table 5 and the transmission information can be predefined by the RRC.

As shown in FIGS. 2, 3, 4 and 5, by adding an additional triggering bit in the PDCCH, the eNB can dynamically control multiple PUCCH transmissions, and a plurality of PUCCHs Transmission and DL throughput performance of the corresponding UE can be achieved. In addition, Uplink Control Information (UCI) information can be effectively transmitted on the uplink. In addition, since the UL PUCCH resources can be controlled by the eNB, the eNB can more flexibly transmit the channel environment or the loading aspect of the entire network than the method of transmitting a specific number of semi-static multiple PUCCHs, Make resources available. Therefore, there is an advantage that the resource overhead of the PUCCH resource can be reduced. Information about the UL CC to which multiple PUCCHs are transmitted can also be controlled by the RRC setting.

2, 3, 4 and 5 can add 1 or 2 bits to the DCI format of the PDCCH as triggering bits, and can be used as instruction information to dynamically control transmission of multiple PUCCHs. 2, 3, 4 and 5 illustrate a method of instructing transmission of multiple PUCCHs for each PDCCH, but in the following description, multiple transmission of PUCCHs is enabled or enabled, and PUCCHs are continuously multiplexed. Disable (or release) multiple transmissions. This can define a 'PUCCH C-RNTI' (PUCCH Cell Radio Network Temporary Identifier) value for multiple PUCCH transmissions and set certain bits predefined in the PDCCH to be bits for multiple PUCCH transmission. Once activated, multiple PUCCH transmissions are possible in any UL subframe until deactivated. And an A / N (Ack / No Ack) transmission to the PDCCH that deactivates multiple PUCCH transmissions should be made. In short, the A / N transmission can be configured as follows.

- PDSCH with PDCCH

- SPS release in PDCCH

- multiple PUCCH transmission release in PDCCH

 The eNB scrambles and transmits the PDCCH to the PDCCH C-RNTI value in order to activate or deactivate the multiple PUCCH transmission. In order to activate the multiple PUCCHs, specific fields of the PDCCH are set as shown in Table 6, and specific fields of the PDCCH are set as shown in Table 7 in order to deactivate the multiple PUCCHs.

Table 6 shows the values of fields configured according to the PDCCH DCI format for instructing to activate the multiple PUCCH transmission.

[Table 6]

Table 7 shows the values of fields configured according to the PDCCH DCI format indicating that multiple PUCCH transmissions are deactivated.

[Table 7]

When receiving the PDCCH DCI formatted signal having the values of the fields as illustrated in Table 6 and Table 7, the UE confirms that the multiple PUCCH transmission is activated or deactivated, and activates the multiple PUCCH transmission in a preset manner Or deactivated.

6 is a diagram illustrating an example of controlling multiple PUCCH transmissions using a specific bit of a PDCCH DCI format according to an embodiment of the present invention.

The DCI format of the PDCCH scrambled with 'PUCCH C-RNTI' in the eNB 611 is 0, the 'TPC command for scheduled PUSCH' field (TPC_PUSCH) is '00' according to the setting in Table 6, If the 'Cyclic shift DM RS' field (CS-DMRS) is set to '000', the UE 621 confirms that the received PDCCH activates multiple PUCCH transmissions and then performs multiple PUCCH transmissions such as 622 and 624 do. At this time, the multiple PUCCH transmission scheme is to transmit one PUCCH in the PCC and the SCC, respectively, and this can be previously performed through the RRC or the like. After the multiple PUCCH transmission is sufficiently performed, the eNB 611 deactivates the multiple PUCCH transmission so that one PUCCH transmission is performed. For this, the eNB 611 sets the DCI format of the PDCCH scrambled with 'PUCCH C-RNTI' to 0 and the 'TPC command for scheduled PUSCH' field (TPC_PUSCH) to '00' , The 'Cyclic shift DM RS' field (CS-DMRS) is' 000 ', the' Modulation and coding scheme and redundancy version (MCS-RV) 'field is' 11111', 'Resource block assignment and hopping resource allocation RBA & hopping RA) 'are both set to' 1 ', and the UE 621 confirms that the received PDCCH deactivates the transmission of the multiple PUCCHs. Then, PUCCH transmission is performed.

6, the DCI format 0 is mainly described in the tables 6 and 7, but the HARQ process number field (DCI format 1 / 1A, DCI format 2 / 2A / 2B / FDD) is set to '000' is transmitted as 612, the UE 621 can grasp it as instruction information for activating multiple PUCCH transmissions. TDD, the PDCCH with the HARQ process number 'field (in the case of TDD) set to' 0000 'such as DCI format 1 / 1A and DCI format 2 / 2A / 2B / 2C is transmitted as 612, ) Can be grasped as instruction information for activating multiple PUCCH transmissions. Of course, even when the values of the 'HARQ process number' field, the 'Modulation and coding scheme' field, the 'Redundancy version', and the 'Resource block assignment' field of the PDCCH DCI format 1A are set as shown in Table 7, It can be grasped by instruction information.

6 shows the PDCCH scrambled with 'PUCCH C-RNTI' as information indicating the activation or deactivation of multiple PUCCH transmissions. When the values of the fields of each PDCCH format correspond to Table 6 or Table 7, Quot; is activated or deactivated. The multiple PUCCH transmission scheme can use a preset scheme such as RRC signaling. The setting method of Tables 6 and 7 is an embodiment, and can be configured to include other fields or other values.

Meanwhile, combining the method shown in FIG. 6 and Tables 6 and 7 with FIGS. 2 to 5 and Tables 2 to 5 may simultaneously instruct the multiple PUCCH transmission method and activation.

7 is a diagram illustrating an example of detailed control of multiple PUCCH transmission schemes using specific bits of the PDCCH DCI format according to an embodiment of the present invention. Figure 7 can be combined with Table 5 and Table 6 to use Table 8 below.

[Table 8]

Table 8 can be applied when the PDCCH is scrambled with 'PUCCH C-RNTI'. This means that when the UE descrambles the PDCCH transmitted from the eNB to 'PUCCH C-RNTI', it confirms that the corresponding PDCCH is instruction information for activating or deactivating the multiple PUCCH transmission. When a specific field of the PDCCH is set as shown in Table 8 for each format, the PUCCH is transmitted or not multiplexed. Unlike the DCI formats shown in Table 8, the DCI Format 0 is applicable when activating or deactivating the PUCCH multiplex transmission. The number of PUCCHs transmitted in a certain CC is set to RRC in advance, Can be implemented. In FIG. 7, a more detailed description will be given.

If the DCI format of the PDCCH scrambled with 'PUCCH C-RNTI' is 1 in the eNB 711 and the 'TPC command for scheduled PUCCH' field (TPC_PUCCH) is '01' according to the setting in Table 8, , The UE 721 confirms that the received PDCCH activates the multiple PUCCH transmission and that one PUCCH is transmitted in the UL PUCCH and one PUCCH is transmitted in the UL SCC1, PUCCH transmission is performed. When it is necessary to change the transmission mode of the multiple PUCCHs, the eNB 711 scrambles with 'PUCCH C-RNTI' as in 716, and the DCI format of the PDCCH is 1A. and sets the scheduled PUCCH 'field (TPC_PUCCH) to' 10 'to transmit the PDCCH. The UE 721 receives the PDCCH, and the PUCCH transmission method determines that one PUCCH is transmitted in UL PCC, one PUCCH is transmitted in UL SCC1, and one PUCCH is transmitted in UL SCC2. And then performs multiple PUCCH transmissions such as 726 and 728. [ Thereafter, the eNB 711 deactivates the multiple PUCCH transmission when the UE 721 transmits multiple PUCCHs, so that one PUCCH is transmitted. For this, the eNB 711 sets the DCI format of the PDCCH scrambled with 'PUCCH C-RNTI' to 2A and the 'TPC command for scheduled PUCCH' field (TPC_PUCCH) is '00' . The UE 721 receiving the PUCCH 730 confirms that the multiple PUCCH transmission is deactivated and transmits one PUCCH as 732. [

FIGS. 2 to 7 and Tables 2 to 8 illustrate an example in which 1 or 2 bits are added to the PDCCH to designate it as instruction information for controlling transmission of multiple PUCCHs or use specific fields as instruction information for controlling transmission of multiple PUCCHs. In addition to a method using a physical control channel such as a PDCCH, a PDCCH upper layer can instruct transmission of multiple PUCCHs.

For example, it is possible to control multiple PUCCH transmissions with MAC CE signaling (MAC CE) at the L2 layer (L2 layer). MAC CE signaling does not operate dynamically than PDCCH but can be implemented more dynamically than RRC signaling. However, it has lower reliability in terms of RRC signaling. However, it is possible to apply to multiple PUCCH transmissions since faster signaling is possible than RRC signaling. Since the MAC CE can be included in the PDSCH and transmitted, the UE can instruct the MAC CE of the PDSCH to start or stop the multiple PUCCH transmission or trigger the PUCCH every time, Or trigger.

Also, RRC signaling can be used. This includes a way to set new parameters to control multiple PUCCH transmissions. For example, a new RRC parameter called 'MultiplePUCCHTrigger' may be created and used as a triggering RRC parameter for multiple PUCCH transmissions. This RRC parameter is implemented to have UE-specific parameter characteristics with a turn-off value as a default value. If the UE receives the 'MultiplePUCCHTrigger' transmitted by the eNB, it is turned on and the UE can start transmitting multiple PUCCHs.

As shown in FIGS. 2 to 7, in order to control multiple PUCCHs or single PUCCH transmission, a base station transmits indication information for controlling multiplex transmission to a user terminal performing multiplex transmission of control information, through a physical channel, Layer MAC or RRC signaling. Then, the control information is multiplexed or uniquely received from the user terminal that has received the instruction information in a predetermined manner.

FIG. 8 shows a case where a specific bit of a signal to be transmitted through the PDCCH according to an embodiment of the present invention indicates multiple PUCCH transmission or single PUCCH transmission. The present invention is applicable to the embodiments shown in Figs. 2 to 5.

The base station determines the PUCCH transmission scheme of the user terminal (S810). Then, according to whether the transmission scheme is a multiple PUCCH transmission or a single PUCCH transmission (S820), a signal (PDCCH transmission) to be transmitted through the PDCCH to the user terminal can be set as S830 or S840. That is, when the PUCCH transmission scheme of the user terminal is a single transmission, a multiple PUCCH triggering bit of a signal to be transmitted through the PDCCH is set to a single PUCCH transmission (S830). In Table 2 to Table 5, the specific 1 or 2 bits are set in advance as promised information (for example, '0' or '00'). On the other hand, if the PUCCH transmission scheme of the user terminal is multiplex transmission, a multiple PUCCH triggering bit of a signal to be transmitted through the PDCCH is set to multiple PUCCH transmission (S840). In Table 2 to Table 5, one or two bits are set in advance as promised information (for example, '1', '01', '10', '11'). The set signal is transmitted to the user terminal through the PDCCH (S850). Thereafter, the user terminal receives a single PUCCH or multiple PUCCHs from the user terminal according to the setting of S830 or S840 (S860).

Information on how to perform multiple PUCCH transmission, i.e., how much PUCCH transmission is performed in the CC, may be given by RRC or may be changed according to the set up instruction information.

FIG. 9 illustrates a case where multiple PUCCH transmissions are activated or deactivated according to a signal scrambled and transmitted by a PDCCH according to an embodiment of the present invention. The present invention is applicable to the embodiments shown in Figs.

The base station performs a single PUCCH transmission with the user terminal (S910). If the user terminal needs to transmit multiple PUCCHs, such as increasing the amount of signals to be transmitted through the PUCCH, or requiring fast signal transmission, the base station determines transmission of multiple PUCCHs of the user terminal (S920). Then, the format of the PDCCH to be transmitted is determined, and the value of the specific field of the PDCCH format determined to activate the multiple PUCCH is set (S930). This is shown in Table 6 above. Then, the PDCCH in which the value of the specific field is set is scrambled with the PUCCH C-RNTI and transmitted to the user terminal (S940). The user terminal that has received the PUCCH transmission confirms that the multiple PUCCH transmission is instructed and starts the transmission of multiple PUCCHs. The base station receives multiple PUCCHs from the user terminal (S950). If it is determined in step S960 that multiple PUCCH transmission is not required, the PDCCH format to be transmitted is determined, and a specific field of the PDCCH format determined to deactivate the multiple PUCCH is set in step S970. This is shown in Table 7 above. Then, the PDCCH is scrambled with the PUCCH C-RNTI and transmitted to the user terminal (S980), and a single PUCCH is received from the user terminal (S990).

Of course, as shown in Table 8 and FIG. 7, not only activation but also multiple PUCCH transmission schemes can be set.

Meanwhile, it has been described above that the transmission of multiple PUCCHs is controlled using MAC CE or RRC signaling in addition to PDCCH. The base station may operate as shown in FIG. 10 to control the transmission of multiple PDCCHs.

10 is a diagram for activating or deactivating multiple PUCCH transmissions in an upper layer of the physical layer according to an embodiment of the present disclosure.

The base station performs a single PUCCH transmission with the user terminal (S1010). If it is necessary to transmit multiple PUCCHs such as increasing the amount of signals to be transmitted through the PUCCH or fast signal transmission, the base station determines to transmit multiple PUCCHs of the user terminal (S1020). Then, the MAC CE or RRC parameter is set to activate the multiple PUCCHs (S1030). Then, the set MAC CE / RRC parameter is signaled to the user terminal (S1040). The signaled MAC CE / RRC parameters are carried on the PDSCH. After that, the user terminal confirms that the multiple PUCCH transmission is instructed, and starts the multiple PUCCH transmission. The base station receives multiple PUCCHs from the user terminal (S1050). Then, it is checked whether multiple PUCCH transmission is required (S1060). If multiple transmission is not required, a MAC CE or RRC parameter is set to deactivate the multiple PUCCHs (S1070). After signaling the set MAC CE / RRC parameter to the user terminal (S1080), a single PUCCH is received from the user terminal (S1090).

As shown in FIGS. 2 to 7, in order to perform multiple PUCCH or single PUCCH transmission, a user terminal transmits indication information for controlling multiplex transmission of control information from a base station to a MAC or an upper layer of the physical channel RRC signaling, and when the indication information indicates multiplex transmission of the user terminal, the control information is multiplexed. The details will be described below.

11 shows a case where a specific bit of a signal to be transmitted through the PDCCH according to an embodiment of the present invention indicates multiple PUCCH transmission or single PUCCH transmission. The present invention is applicable to the embodiments shown in Figs. 2 to 5. Of course, one or two bits can be added to the PDCCH for transmission of multiple PUCCHs, and additionally, multiple PUCCH transmissions can be controlled by reusing the existing DCI formatted fields (TPC in DL grant, DAI, etc.).

The user terminal extracts multiple PUCCH triggering bits of the signal received via the PDCCH (S1110). It is confirmed whether the triggering bit indicates multiple PUCCH transmission (S1120). The triggering bit may be set to a predetermined one or two bits in advance in Tables 2 to 5 as previously promised information.

If the triggering bit indicates a single PUCCH transmission, the user terminal transmits a single PUCCH (S1130). On the other hand, if the triggering bit indicates multiple PUCCH transmission, multiple PUCCHs are transmitted (S1140).

Information on how to perform multiple PUCCH transmission, i.e., how much PUCCH transmission is performed in the CC, may be given by RRC or may be changed according to the set up instruction information.

FIG. 12 shows a case where multiple PUCCH transmissions are activated or deactivated according to a signal scrambled and transmitted by a PDCCH according to an embodiment of the present invention. The present invention is applicable to the embodiments shown in Figs.

The user terminal receives the PDCCH from the base station (S1210). If the descrambling is successful (S1230), it is confirmed whether the value of the specific field of the received PDCCH activates the multiple PUCCH transmission (S1240). If the descrambling is successful (S1230), the PDCCH is de-scrambled with the PUCCH C-RNTI. This can be referred to Tables 6 and 7. When activating multiple PUCCH transmissions as in the configuration of Table 6, the user terminal transmits multiple PUCCHs in a promised manner to the base station (S1260). Then, multiple PUCCHs are continuously transmitted until separate deactivation indication information is received. On the other hand, in the case of deactivating the multiple PUCCH transmission as in the configuration of Table 7, the user terminal transmits an ACK / NACK for reception of information indicating inactivation (S1245), stops the transmission of multiple PUCCHs, (S1250).

Of course, as shown in Table 8 and FIG. 7, the specific field of the descrambled PDCCH may not only enable multiplex transmission of the PUCCH, but may also indicate a multiplex PUCCH transmission scheme.

FIG. 13 shows the case of activating or deactivating transmission of multiple PUCCHs using MAC CE or RRC signaling according to an embodiment of the present invention.

The user terminal receives the PDSCH from the base station (S1310). And confirms whether the received PDSCH is signaling the MAC CE or RRC parameter for activating / deactivating the multiple PUCCHs (S1320). As a result, when activating / deactivating the multiple PUCCH, it is confirmed whether the received MAC CE or RRC signaling activates the multiple PUCCH transmission (S1340). As a result, when activating the multiple PUCCH transmission, the user terminal transmits multiple PUCCHs in a promised manner to the base station (S1360). Then, multiple PUCCHs are continuously transmitted until a separate deactivation indication information is confirmed by MAC CE or RRC signaling. On the other hand, when deactivating the multiple PUCCH transmission, the user terminal stops transmission of multiple PUCCHs and performs transmission of a single PUCCH (S1350).

8 to 10 may be an operation procedure of the base station. A configuration of a base station implementing this is shown in FIG.

14 is a diagram showing a configuration of a base station for dynamically controlling multiplex transmission / reception of control information in a wireless communication system. The overall configuration includes a control unit 1420, a transmitting unit 1410, and a receiving unit 1430. The controller 1420 generates the instruction information for controlling the multiplex transmission to the user terminal performing the multiplex transmission of the control information. The transmitting unit 1410 transmits the generated indication information through the physical channel or MAC or RRC signaling, which is an upper layer of the physical channel, and the receiving unit 1430 transmits the indication information to the user terminal , The control information is received from the user terminal in a multiplex manner.

8, when the indication information is transmitted in a physical channel, the physical channel is a PDCCH, the indication information corresponds to one or two bits of control information transmitted on the PDCCH, The indication information can be triggered so that the control information is transmitted in multiple through the PUCCH.

9, when the directive information is transmitted in a physical channel, the directive information is a field of control information transmitted on a PDCCH scrambled with a PUCCH C-RNTI, and the directive information is multiplexed through a PUCCH The control information can be activated or deactivated.

On the other hand, in the case of FIG. 10, the indication information may be included in the MAC CE / RRC parameter and signaled. In this case, the MAC CE / RRC parameter may be included in the PDSCH and transmitted to the user terminal.

11 to 13 can be an operation process of the user terminal. A configuration of a user terminal that implements this is shown in FIG.

15 is a diagram illustrating a configuration of a user terminal that dynamically controls multiplex transmission / reception of control information in a wireless communication system. The overall configuration includes a control unit 1520, a transmission unit 1510, and a reception unit 1530.

The transmitting unit 1510 multiplexes the control information to the base station. The above-mentioned PUCCH simultaneous transmission can be performed. Meanwhile, the receiving unit 1530 receives the instruction information for controlling the multiplex transmission of the control information from the base station through the physical channel or the MAC or RRC signaling, which is an upper layer of the physical channel. The controller 1520 determines whether the instruction information indicates the multiplex transmission of the user terminal, and controls the transmitter to multiplex the control information.

More specifically, in the case of FIG. 11, when the instruction information is transmitted in the physical channel, the physical channel becomes a PDCCH. Accordingly, the user terminal can control one or two bits of the control information transmitted on the PDCCH as triggering bits, and transmit control information through the PUCCH in multiple or single units.

In the case of FIG. 12, when the directive information is transmitted in the physical channel, the directive information is a field of control information transmitted on the PDCCH scrambled with the PUCCH C-RNTI. Accordingly, the received PDCCH can be descrambled with the PUCCH C-RNTI, and when the descrambling is successful, the transmission of the control information through the PUCCH can be activated or deactivated according to the activation / deactivation indication information.

13, the indication information may be included in the MAC CE / RRC parameter and signaled. In this case, the MAC CE / RRC parameter is included in the PDSCH and can be received by the user terminal. In this case, the user terminal receives the PDSCH and recognizes that the included information activates or deactivates the multiple PUCCHs, and can activate or deactivate the transmission of the control information in multiple through the PUCCH.

Multiple PUCCH transmission efficiency and system throughput can be improved more effectively through various methods for indicating multiple PUCCH transmission.

That is, when using transmission of multiple PUCCHs, effective UL UCI transmission is enabled. In addition, multiple PUCCH transmission can be triggered without significantly changing the existing system, and the eNB signals the UE efficiently, which can help improve overall system performance.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (15)

A method of operating a base station,
In the base station,
Receiving a first Physical Uplink Control Channel (PUCCH) transmission from the user terminal (UE) according to a first PUCCH configuration on an uplink primary carrier;
Transmitting first indication information within a first Medium Access Control (CE) signaling CE (Physical Downlink Shared Channel) transmission to the user terminal, wherein the first indication information comprises one or more Indicating activation of additional PUCCH transmissions;
Receiving, from the user terminal device, a second plurality of PUCCHs based on the first indication information on the uplink main constituent carrier;
Sending, to the user terminal, second indication information within a second MAC CE signaling in a second PDSCH transmission, the second indication information indicating stopping of the one or more additional PUCCH transmissions; And
Receiving, from the user terminal, a third PUCCH transmission on the uplink primary carrier in accordance with the first PUCCH configuration
Gt; a < / RTI > base station. The method according to claim 1,
And wherein the second plurality of PUCCHs comprises ACK or NACK transmissions. The method according to claim 1,
Wherein the MAC CE signaling is scrambled. The method according to claim 1,
Wherein the second indication information indicates to release a Semi-Persistent Scheduling (SPS) transmission. The method according to claim 1,
The method comprises:
Further comprising determining if multiple PUCCH transmissions are required. A method of operating a user terminal device, the method comprising:
In the user terminal,
Transmitting to the base station a first PUCCH transmission according to a first PUCCH configuration on an uplink primary component carrier;
Receiving, from the base station, first indication information within a first MAC CE signaling in a first PDSCH transmission, the first indication information indicating activation of one or more additional PUCCH transmissions;
Transmitting, by the base station, a second plurality of PUCCHs based on the first indication information on the uplink main component carrier;
Receiving, from the base station, second indication information within a second MAC CE signaling in a second PDSCH transmission, the second indication information indicating an interruption of the one or more additional PUCCH transmissions; And
Transmitting to the base station a third PUCCH transmission on the uplink primary carrier in accordance with the first PUCCH configuration
Gt; a < / RTI > user terminal device. The method according to claim 6,
And wherein the second plurality of PUCCHs comprises ACK or NACK transmissions. The method according to claim 6,
Wherein the MAC CE signaling is scrambled. The method according to claim 6,
And the second indication information indicates releasing the SPS transmission. The method according to claim 6,
The method comprises:
And stopping the one or more additional PUCCH transmissions in response to the second indication information. As a user terminal device,
A transmitting unit;
A receiving unit;
A controller, wherein the controller is configured to cause the transmitting unit and the receiving unit,
Transmitting to the base station a first PUCCH transmission according to a first PUCCH configuration on an uplink primary component carrier,
From the base station, first indication information within a first MAC CE signaling within a first PDSCH transmission, the first indication information indicating activation of one or more additional PUCCH transmissions,
Transmitting a second plurality of PUCCHs to the base station based on the first indication information on the uplink main component carrier,
From the base station, second indication information within a second MAC CE signaling in a second PDSCH transmission, the second indication information indicating an interruption of the one or more additional PUCCH transmissions,
To cause the base station to transmit a third PUCCH transmission on the uplink primary carrier in accordance with the first PUCCH configuration,
And a user terminal device. 12. The method of claim 11,
And wherein the second plurality of PUCCHs comprises ACK or NACK transmissions. 12. The method of claim 11,
Wherein the MAC CE signaling is scrambled. 12. The method of claim 11,
And the second indication information indicates to release the SPS transmission. 12. The method of claim 11,
Wherein the controller is configured to cause the transmitting unit and the receiving unit,
And to cause the one or more additional PUCCH transmissions to cease in response to the second indication.

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