CN109756974B - Method and device for sending physical uplink control channel - Google Patents
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Abstract
A method and apparatus for transmitting Physical Uplink Control Channel (PUCCH) in Frequency Division Duplex (FDD) cell of Long Term Evolution (LTE) system, under FDD cell of 1 pair FDD carrier and uplink carrier of one or more different frequency points, UE supporting the cell transmits PUCCH using PUCCH resource of allocated uplink main carrier or uplink auxiliary carrier, wherein allocated uplink carrier can adopt configured uplink carrier under different allocation conditions, uplink main carrier, configured uplink carrier indicating transmission PUCCH or configured pre-defined uplink carrier, newly added PDCCH search space corresponding uplink carrier or configured pre-defined uplink carrier in a plurality of uplink auxiliary carriers corresponding to newly added PDCCH search space. Thus, according to different conditions, the UE can feed back the PUCCH corresponding to the PDSCH.
Description
Technical Field
The present invention relates to communication technologies, and in particular, to a method and apparatus for transmitting a Physical Uplink Control Channel (PUCCH) in a Frequency Division Duplex (FDD) cell of a Long Term Evolution (LTE) system.
Background
Currently, in the third generation partnership project (3 GPP) protocol of wireless interfaces, the FDD cell of LTE has a pair of carriers: an uplink carrier and a downlink carrier, wherein the downlink carrier transmits a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS) and a Physical Broadcast Channel (PBCH). The terminal (UE) acquires the physical layer cell Identification (ID) of the FDD cell, the duplex mode of the cell and the wireless frame timing and the subframe timing of the cell by detecting the PSS and the SSS carried by the downlink carrier. Then, the UE can determine the lower two bits of the radio frame number in the FDD cell and the number of downlink transmitting ports of the cell by detecting the PBCH carried by the downlink carrier, and can obtain the number of the downlink transmitting ports of the cell by using a management information data block (MIB) carried on the PBCH: the downlink bandwidth of the FDD cell, the number of groups of a physical hybrid automatic repeat request indicator channel (PHICH) and the upper 8 bits of the FDD cell radio frame number.
After acquiring the information, the UE may receive a Physical Control Format Indicator Channel (PCFICH) in each downlink subframe, and determine the length of the control region of the current subframe according to a Control Format Indicator (CFI) carried on the PCFICH. Then, the UE may detect a downlink control channel (PDCCH) in a search space corresponding to the PDCCH in a current subframe control region; the UE obtains a System Information Block (SIB) 1 and other SIB through the detected PDCCH scrambled by the system information-radio network temporary identifier (SI-RNTI), and all configuration information of the FDD cell can be obtained from the SIB; the UE can obtain paging information by detecting a PDCCH scrambled by a paging information-system network temporary identifier (P-RNTI); the UE in a radio connection state (rrc_connected) can obtain uplink or downlink mobile scheduling information by detecting a cell-radio network temporary identity (C-RNTI) scrambled PDCCH; the uplink or downlink semi-persistent scheduling information can be obtained by detecting the PDCCH scrambled by the SPS C-RNTI; the UE may also obtain other types of information by detecting other types of RNTI-scrambled PDCCHs, such as: after a Packet Random Access Channel (PRACH) is transmitted in a random access process, the UE can obtain the scheduling information of the RAR by detecting a PDCCH scrambled by a random access-radio network temporary identifier (RA-RNTI); when receiving multicast/multicast information (MBMS) service sent by a multicast/multicast single frequency network (MBSFN) mode, UE can obtain a Main Control Channel (MCCH) change notice by detecting a PDCCH scrambled by a main control-radio network temporary identifier (M-RNTI); when receiving the MBMS sent by the SC-PTM mode, the UE can butterfly SC-MCCH change notice by detecting the PDCCH scrambled by the SC-RNTI.
After detecting the C-RNTI scrambled PDCCH, the UE in RRC_CONNECTED can execute corresponding processing according to specific dynamic scheduling information carried on the PDCCH: when uplink dynamic scheduling information is carried on the PDCCH, the UE transmits the PUSCH according to the scheduling information, and receives PHICH fed back by a base station (eNodeB) according to a time sequence relation between the PUSCH and the PHICH, and the PHICH carries acknowledgement/non-acknowledgement (ACK/NACK) information of a Transmission Block (TB) on the PUSCH; when the PDCCH carries downlink dynamic scheduling information, the UE receives the PDSCH according to the scheduling information and sends the PUCCH according to the time sequence relation between the PDSCH and the PUCCH, and the PUCCH carries ACK/NACK information of the TB on the PDSCH. When the PDCCH carries downlink scheduling information, the UE receives the PDSCH according to the scheduling information and sends the PUCCH according to the time sequence relation between the PDSCH and the PUCCH, and the PUCCH carries ACK/NACK information of the TB on the PDSCH.
After detecting the PDCCH scrambled by the SPS C-RNTI, the UE in rrc_connected may perform corresponding processing according to the specific semi-persistent scheduling information carried on the PDCCH: when the PDCCH bears the uplink semi-static scheduling activation information, the UE determines the resource configuration of the semi-static PUSCH according to the information, periodically transmits the PUSCH according to the configuration information, and receives the PHICH corresponding to the current PUSCH transmission fed back by the eNodeB according to the time sequence relation between the PUSCH and the PHICH after each PUSCH transmission, and bears the ACK/NACK information of the TB on the current PUSCH on the PHICH; when the PDCCH carries downlink semi-static scheduling activation information, the UE determines the resource configuration of the semi-static PDSCH according to the information, periodically receives the PDSCH according to the configuration information, and after receiving the PDSCH each time, sends the PUCCH according to the time sequence relation between the PDSCH and the PUCCH, and the PUCCH carries the ACK/NACK information of the TB on the PDSCH.
The above is an overview of the functions performed by the UE in the FDD cell in the LTE system, but in the actual networking, there are scenarios where there are a pair of FDD carriers, and one or more uplink carriers of different frequency points. In practical service applications, there is a service requirement for video upload in many scenarios, where the requirement for uplink bandwidth in an FDD cell is far greater than the requirement for downlink bandwidth. Aiming at the actual networking scene and service application scene, the problem of how to use 1 pair of FDD carriers and one or more uplink carriers with different frequency points to solve the problem that the uplink bandwidth requirement in an FDD cell is far greater than the downlink bandwidth requirement in the actual application is solved.
Disclosure of Invention
In view of this, an embodiment of the present invention provides a method for transmitting PUCCH in an FDD cell of an LTE system, where the method can feed back PUCCH corresponding to PDSCH of UE in an FDD cell using 1 pair of FDD carriers and one or more uplink carriers with different frequency points.
The embodiment of the invention also provides a sending device of the PUCCH in the FDD cell of the LTE system, which can feed back the PUCCH corresponding to the PDSCH of the UE under the FDD cell using 1 pair of FDD carrier waves and one or more uplink carrier waves with different frequency points.
According to the above object, the present invention is achieved by:
a method for transmitting a physical uplink control channel PUCCH, the method comprising:
in an FDD cell using 1 pair of frequency division duplex FDD carriers and one or more uplink carriers with different frequency points, distributing the uplink carriers for terminal UE supporting the cell;
the UE sends PUCCH using PUCCH resources on the allocated uplink carrier, including two ways:
when the physical uplink shared channel PDSCH allocated to the UE adopts semi-static scheduling, the PUCCH resources allocated to the UE are activated by adopting the semi-static scheduling to transmit PUCCH;
when the PDSCH allocated to the UE adopts dynamic scheduling, determining PUCCH resources through resources occupied by the PDCCH scheduling the PDSCH, and transmitting the PUCCH by adopting the PUCCH resources.
Preferably, before the method, the method further comprises: the UE sends capability information of an FDD cell supporting an uplink carrier using 1 pair of FDD carriers and one or more different frequency points to a base station eNodeB controlling the FDD cell.
Preferably, before the method, the method further comprises: and when the UE is accessed to the FDD cell, the eNodeB controlling the FDD cell indicates to the UE that the FDD cell is the FDD cell using 1 pair of FDD carriers and one or more uplink carriers with different frequency points.
Preferably, the UE sends PUCCH using PUCCH resources on the allocated uplink carrier as:
when configuring a single uplink carrier for the UE, transmitting a PUCCH by using a PUCCH resource on the configured uplink carrier;
transmitting a PUCCH using a PUCCH resource on the configured uplink primary carrier when a plurality of uplink carriers are configured for the UE and when the configured plurality of uplink carriers include a primary carrier;
or when a plurality of uplink carriers are configured for the UE and when the configured plurality of uplink carriers include or do not include a primary carrier, transmitting the PUCCH using a PUCCH resource indicating an uplink carrier transmitting the PUCCH in the configuration or a predetermined uplink carrier in the configuration.
Preferably, the determining the PUCCH resource through determining the resource occupied by the PDCCH for scheduling the PDSCH includes:
minimum CCE subscript in control channel element CCE occupied by PDCCH of scheduling PDSCH
Determining the PUCCH resource,>
is a parameter of an uplink carrier configured to the UE.
Preferably, when the PDCCH for scheduling PDSCH adopts the resource transmission in the PDCCH search space in the data domain, the process of determining the PUCCH resource by the resource occupied by the PDCCH for scheduling PDSCH is:
minimum ECCE subscript in enhanced control channel element ECCE occupied by PDCCH scheduling PDSCH
Determining PUCCH resource, < >>
Is a parameter of an uplink carrier configured to the UE.
A transmitting apparatus of a PUCCH, the apparatus supporting an FDD cell using 1 pair of FDD carriers and one or more inter-frequency point uplink carriers, comprising: a determining unit and a transmitting unit, wherein,
a determining unit, configured to determine to transmit a PUCCH using a PUCCH resource on the allocated uplink carrier;
a sending unit, configured to send the current PUCCH according to the PUCCH resource on the uplink carrier determined by the determining unit, including two modes: when PDSCH adopts semi-static scheduling, the PUCCH resources allocated to UE are activated by adopting the semi-static scheduling to transmit PUCCH; when the PDSCH adopts dynamic scheduling, the PUCCH resource is determined through the resources occupied by the PDCCH for scheduling the PDSCH, and the PUCCH is transmitted by adopting the PUCCH resource.
Preferably, the device sends the capability information of the FDD cell supporting the uplink carrier using 1 pair of FDD carriers and one or more different frequency points to the eNodeB of the FDD cell controlling the uplink carrier using 1 pair of FDD carriers and one or more different frequency points;
and controlling the eNodeB of the FDD cell using the 1 pair of FDD carriers and the uplink carrier of one or more different frequency points, and indicating the FDD cell to the device as the FDD cell using the 1 pair of FDD carriers and the uplink carrier of one or more different frequency points when the device accesses the FDD cell.
Preferably, the determining unit further includes:
when one uplink carrier is configured for the device, determining to transmit PUCCH by using PUCCH resources on the configured uplink carrier;
or when a plurality of uplink carriers are configured for the device and when the configured plurality of uplink carriers comprise a main carrier, transmitting a PUCCH by using PUCCH resources on the configured uplink main carrier;
or when a plurality of uplink carriers are configured for the device and when the configured plurality of uplink carriers include or do not include a primary carrier, determining to transmit the PUCCH using the configured uplink carrier indicating to transmit the PUCCH or a PUCCH resource of the configured pre-specified uplink carrier;
the transmitting unit further includes:
when dynamic scheduling is adopted for PDSCH, the minimum CCE subscript and minimum CCE subscript in control channel element CCE occupied by PDCCH for scheduling PDSCH
Determining PUCCH resource, < >>
Is a parameter of an uplink carrier configured to the UE.
Preferably, when the PDCCH of the scheduled PDSCH is transmitted by using resources in the PDCCH search space in the data field, the transmitting unit further includes:
when dynamic scheduling is adopted for PDSCH, the minimum ECCE subscript and the minimum ECCE subscript in an enhanced control channel unit ECCE occupied by PDCCH for scheduling PDSCH
Determining PUCCH resource, < >>
Is a parameter of an uplink carrier configured to the UE.
As can be seen from the foregoing solutions, in the method and apparatus provided in the embodiments of the present invention, in an FDD cell of 1 pair of FDD carriers and one or more uplink carriers of different frequency points, where an uplink carrier of 1 pair of FDD carriers is referred to as an uplink primary carrier, an uplink carrier of one or more uplink carriers of different frequency points is referred to as an uplink secondary carrier, and UEs supporting the cell transmit a PUCCH using PUCCH resources of the allocated uplink primary carrier or uplink secondary carrier, where the allocated uplink carrier may employ one configured uplink carrier, one configured uplink carrier indicating to transmit the PUCCH, one configured uplink carrier corresponding to a new PDCCH search space, and one configured uplink carrier indicating to transmit the PUCCH or one configured pre-defined uplink carrier corresponding to a new PDCCH search space. In this way, according to different situations, the UE can feed back the PUCCH corresponding to the PDSCH.
Drawings
Fig. 1 is a flowchart of a method for transmitting PUCCH in an FDD cell of an LTE system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a transmitting device of a PUCCH in an FDD cell of an LTE system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below by referring to the accompanying drawings and examples.
Aiming at the uplink large bandwidth requirement of video uploading, 1 pair of FDD carriers and one or more uplink carriers with different frequency points are used for forming a special FDD cell. In a pair of FDD carriers in the FDD cell, the downlink carrier is the only downlink carrier in the special FDD cell, the uplink carrier is the uplink main carrier of the special FDD cell, and all the uplink carriers of different frequency points in the cell are the uplink auxiliary carriers of the cell.
In this particular FDD cell, an FDD frame structure is employed: the unique downlink carrier and each uplink carrier adopt an FDD frame structure, the unique downlink carrier in the FDD cell executes all functions of the downlink carrier in the common FDD cell in the same way, and the uplink main carrier in the FDD cell executes all functions of the uplink carrier in the common FDD cell in the same way.
In this particular FDD cell, the UEs are of two types, respectively:
1) Ordinary UEs that perform the respective functions of UEs within an ordinary FDD cell in the same manner. For a normal UE, an FDD cell is a normal FDD cell, which consists of only one pair of FDD carriers: the uplink transmission related to the UE is carried out on an uplink main carrier, the downlink transmission related to the UE is carried out through a unique downlink carrier, and the common UE does not know that other uplink auxiliary carriers exist in an FDD cell at all;
2) And the UE supporting the special FDD cell reports the capability information supporting the special FDD cell when accessing the FDD cell. If the cell accessed by the UE is a common FDD cell, the eNodeB controlling the FDD cell ignores the capability report; if the FDD cell accessed by the UE is a special FDD cell, the eNodeB controlling the FDD cell allocates an uplink carrier to the UE: the UE may be allocated only with an uplink primary carrier, or may be allocated multiple uplink carriers at the same time, where these carriers may include or not include an uplink primary carrier. For such UEs, after the UE accesses a special FDD cell, the eNodeB in the special FDD cell is controlled to carry an indication of the special FDD cell when allocating resources to the UE, or by allocating a specific uplink carrier, so as to implicitly indicate to the UE that the current cell is a special FDD cell, for example: the uplink carrier and the downlink carrier allocated to the UE are not paired carriers.
In the embodiment of the invention, when uplink and downlink information transmission of the UE is realized corresponding to the special FDD cell, one of the problems to be solved is as follows: and the UE supporting the special FDD cell feeds back the PUCCH corresponding to the PDSCH of the UE, so that the eNodeB of the FDD cell can timely acquire the ACK/NACK information of the TB on the PDSCH, and particularly, when the uplink carrier configured to the UE does not comprise the uplink main carrier.
Fig. 1 is a flowchart of a method for transmitting PUCCH in an FDD cell of an LTE system according to an embodiment of the present invention, which specifically includes the steps of:
102, the UE transmits PUCCH by using the PUCCH resources on the allocated uplink carrier;
when PDSCH adopts semi-static scheduling, the PUCCH resources allocated to UE are activated by adopting the semi-static scheduling to transmit PUCCH;
when the PDSCH allocated to the UE adopts dynamic scheduling, determining PUCCH resources through resources occupied by the PDCCH scheduling the PDSCH, and transmitting the PUCCH by adopting the PUCCH resources.
In fig. 1, the uplink carrier is allocated to the UE supporting the cell: and configuring a unique uplink carrier to the UE.
The UE transmits PUCCH using PUCCH resources on the allocated unique one uplink carrier.
In fig. 1, the uplink carrier is allocated to the UE supporting the cell: the UE is configured with a plurality of uplink carriers, wherein the uplink carriers comprise a main carrier or do not comprise the main carrier.
In the case of including the primary carrier, the UE transmits a PUCCH using a PUCCH resource on the allocated primary carrier.
The UE sends PUCCH using PUCCH resources on the allocated uplink carrier, with or without the primary carrier being included, as: when configuring an uplink carrier for the UE, the uplink carrier for transmitting the PUCCH is instructed or the uplink carrier for transmitting the PUCCH is specified in advance, for example, the PUCCH is transmitted by the configured first uplink carrier by default in advance.
In the above case, if the PDSCH is dynamically scheduled, and the PDCCH for scheduling the PDSCH is transmitted by using resources in the PDCCH search space in the control domain, the process of determining the PUCCH resources by using the resources occupied by the PDCCH for scheduling the PDSCH is:
minimum Control Channel Element (CCE) subscript in CCE occupied by PDCCH for scheduling PDSCH
Determining the PUCCH resource,>
is a parameter of an uplink carrier configured to the UE.
Here, the smallest CCE index among CCEs occupied by PDCCH is used as the reference
The specific formula for determining the PUCCH may be defined in the 3gpp ts36.213 protocol.
If dynamic scheduling is adopted for the PDSCH, when the PDCCH for scheduling the PDSCH adopts resources in the PDCCH search space in the data domain for transmission, the process of determining the PUCCH resources through the resources occupied by the PDCCH for scheduling the PDSCH is as follows:
minimum Enhanced Control Channel Element (ECCE) subscript in ECCE occupied by PDCCH scheduling PDSCH
Determining PUCCH resources, and transmitting PUCCH using the determined PUCCH resources,>
parameters of the uplink carrier configured for the UE for the eNodeB.
Here, the smallest ECCE index in ECCE occupied by PDCCH
The specific formula for determining the PUCCH may employ a definition in the 3GPP TS protocol.
Fig. 2 is a schematic diagram of a device for transmitting PUCCH in an FDD cell of an LTE system according to an embodiment of the present invention, where the device is a UE, and the UE is a UE supporting an FDD cell using 1 pair of FDD carriers and one or more uplink carriers of different frequency points, and specifically includes: a determining unit and a transmitting unit, wherein,
a determining unit, configured to determine to transmit a PUCCH using a PUCCH resource on the allocated uplink carrier;
a sending unit, configured to send the current PUCCH according to the PUCCH resource on the uplink carrier determined by the determining unit, including two modes: when PDSCH adopts semi-static scheduling, the PUCCH resources allocated to UE are activated by adopting the semi-static scheduling to transmit PUCCH; when the PDSCH adopts dynamic scheduling, the PUCCH resource is determined through the resources occupied by the PDCCH for scheduling the PDSCH, and the PUCCH is transmitted by adopting the PUCCH resource.
The apparatus transmits capability information of an FDD cell supporting an uplink carrier using 1 pair of FDD carriers and one or more different frequency points to an eNodeB in the FDD cell controlling the uplink carrier using 1 pair of FDD carriers and one or more different frequency points.
And controlling the eNodeB in the FDD cell using the 1 pair of FDD carrier and the uplink carrier of one or more different frequency points, and indicating the FDD cell to the device as the FDD cell using the 1 pair of FDD carrier and the uplink carrier of one or more different frequency points when the device accesses the FDD cell.
In the apparatus, the determining unit further includes:
when one uplink carrier is configured for the device, determining to transmit PUCCH by using PUCCH resources on the configured uplink carrier;
or when a plurality of uplink carriers are configured for the device and when the configured plurality of uplink carriers comprise a main carrier, transmitting a PUCCH by using PUCCH resources on the configured uplink main carrier;
or when a plurality of uplink carriers are configured for the device and when the configured plurality of uplink carriers include or do not include a primary carrier, determining to transmit the PUCCH using the configured uplink carrier indicating to transmit the PUCCH or a PUCCH resource of the configured pre-specified uplink carrier;
the transmitting unit further includes:
when dynamic scheduling is adopted for PDSCH, the minimum CCE subscript and minimum CCE subscript in control channel element CCE occupied by PDCCH for scheduling PDSCH
Determining PUCCH resource, < >>
Is a parameter of an uplink carrier configured to the UE.
In this apparatus, when the PDCCH of the scheduled PDSCH is transmitted using resources in a PDCCH search space in a data region, the transmitting means further includes: when dynamic scheduling is adopted for PDSCH, the minimum ECCE subscript and the minimum ECCE subscript in an enhanced control channel unit ECCE occupied by PDCCH for scheduling PDSCH
Determining PUCCH resource, < >>
Is a parameter of an uplink carrier configured to the UE.
While the foregoing is directed to the preferred embodiment, other and further embodiments of the invention will be apparent to those skilled in the art from the following detailed description, wherein the invention is shown in the drawings and described, together with the detailed description, by way of illustration of the best mode contemplated for carrying out the invention.
Claims (8)
1. The method for transmitting the Physical Uplink Control Channel (PUCCH) is characterized by comprising the following steps:
the method comprises the steps that a terminal UE sends capability information of an FDD cell supporting uplink carriers using 1 pair of FDD carriers and one or more different frequency points to a base station eNodeB controlling the FDD cell;
in an FDD cell using 1 pair of Frequency Division Duplex (FDD) carriers and one or more uplink carriers with different frequency points, wherein the uplink carrier in the 1 pair of FDD carriers is used as an uplink main carrier, the uplink carrier in the one or more uplink carriers with different frequency points is used as an uplink auxiliary carrier, and a User Equipment (UE) supporting the cell sends a PUCCH by using the allocated PUCCH resources of the uplink main carrier or the uplink auxiliary carrier;
allocating an uplink carrier for the UE supporting the cell;
the UE sends PUCCH using PUCCH resources on the allocated uplink carrier, including two ways:
when the physical uplink shared channel PDSCH allocated to the UE adopts semi-static scheduling, the PUCCH resources allocated to the UE are activated by adopting the semi-static scheduling to transmit PUCCH;
when the PDSCH allocated to the UE adopts dynamic scheduling, determining PUCCH resources through resources occupied by the PDCCH scheduling the PDSCH, and transmitting the PUCCH by adopting the PUCCH resources.
2. The method of claim 1, further comprising, prior to the method: and when the UE is accessed to the FDD cell, the eNodeB controlling the FDD cell indicates to the UE that the FDD cell is the FDD cell using 1 pair of FDD carriers and one or more uplink carriers with different frequency points.
3. The method of claim 1, wherein the UE transmitting PUCCH using PUCCH resources on the allocated uplink carrier is:
when configuring a single uplink carrier for the UE, transmitting a PUCCH by using a PUCCH resource on the configured uplink carrier;
transmitting a PUCCH using a PUCCH resource on the configured uplink primary carrier when a plurality of uplink carriers are configured for the UE and when the configured plurality of uplink carriers include a primary carrier;
or when a plurality of uplink carriers are configured for the UE and when the configured plurality of uplink carriers include or do not include a primary carrier, transmitting the PUCCH using a PUCCH resource indicating an uplink carrier transmitting the PUCCH in the configuration or a predetermined uplink carrier in the configuration.
4. The method of claim 3, wherein the determining PUCCH resources through resources occupied by PDCCH scheduling PDSCH is:
minimum CCE subscript in control channel element CCE occupied by PDCCH of scheduling PDSCH
Determining the PUCCH resource,>
is a parameter of an uplink carrier configured to the UE.
5. The method of claim 1, wherein when the PDCCH for scheduling PDSCH is transmitted using resources in a PDCCH search space in a data region, the process of determining PUCCH resources by using resources occupied by the PDCCH for scheduling PDSCH is:
minimum ECCE subscript in enhanced control channel element ECCE occupied by PDCCH scheduling PDSCH
Determining PUCCH resource, < >>
Is a parameter of an uplink carrier configured to the UE.
6. A PUCCH transmission device, wherein the device supports an FDD cell using 1 pair of FDD carriers and one or more uplink carriers of different frequency points, wherein the uplink carrier of the 1 pair of FDD carriers is used as an uplink primary carrier, the uplink carrier of the one or more uplink carriers of different frequency points is used as an uplink secondary carrier, and a terminal UE supporting the cell transmits the PUCCH using the allocated PUCCH resource of the uplink primary carrier or the uplink secondary carrier, the device comprising: a determining unit and a transmitting unit, wherein,
a determining unit, configured to determine to transmit a PUCCH using a PUCCH resource on the allocated uplink carrier;
a sending unit, configured to send the current PUCCH according to the PUCCH resource on the uplink carrier determined by the determining unit, including two modes: when PDSCH adopts semi-static scheduling, the PUCCH resources allocated to UE are activated by adopting the semi-static scheduling to transmit PUCCH; when the PDSCH adopts dynamic scheduling, determining PUCCH resources through resources occupied by PDCCH scheduling the PDSCH, and transmitting the PUCCH by adopting the PUCCH resources;
the device sends the capability information of the FDD cell supporting the uplink carrier using 1 pair of FDD carriers and one or more different frequency points to the eNodeB of the FDD cell controlling the uplink carrier using 1 pair of FDD carriers and one or more different frequency points;
and controlling the eNodeB of the FDD cell using the 1 pair of FDD carriers and the uplink carrier of one or more different frequency points, and indicating the FDD cell to the device as the FDD cell using the 1 pair of FDD carriers and the uplink carrier of one or more different frequency points when the device accesses the FDD cell.
7. The apparatus of claim 6, wherein the determining unit further comprises:
when one uplink carrier is configured for the device, determining to transmit PUCCH by using PUCCH resources on the configured uplink carrier;
or when a plurality of uplink carriers are configured for the device and when the configured plurality of uplink carriers comprise a main carrier, transmitting a PUCCH by using PUCCH resources on the configured uplink main carrier;
or when a plurality of uplink carriers are configured for the device and when the configured plurality of uplink carriers include or do not include a primary carrier, determining to transmit the PUCCH using the configured uplink carrier indicating to transmit the PUCCH or a PUCCH resource of the configured pre-specified uplink carrier;
the transmitting unit further includes:
when dynamic scheduling is adopted for PDSCH, the minimum CCE subscript and minimum CCE subscript in control channel element CCE occupied by PDCCH for scheduling PDSCH
Determining PUCCH resource, < >>
Is a parameter of an uplink carrier configured to the UE.
8. The apparatus of claim 6, wherein the transmitting unit further comprises, when the PDCCH of the scheduled PDSCH is transmitted using resources within a PDCCH search space within a data region:
when dynamic scheduling is adopted for PDSCH, the minimum ECCE subscript and the minimum ECCE subscript in an enhanced control channel unit ECCE occupied by PDCCH for scheduling PDSCH
Determining PUCCH resource, < >>
Is a parameter of an uplink carrier configured to the UE.
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