TW201242292A - Method for reporting uplink control information and wileless communication device using the same - Google Patents

Abstract

A method for reporting uplink control information and a wireless communication device using the same method are proposed. The proposed method is adapted to the wireless communication device supporting multiple carrier components (CC), and includes following procedures. When the wireless communication device is scheduled to transmit aperiodic channel state information (CSI) of a downlink CC, but has not successfully measured the CSI of the downlink CC, following procedures are executed for the downlink CC. For possible rank indicator (RI) values of the downlink CC, it is to respectively calculate corresponding channel quality indicator (CQI)/precoding matrix indicator (PMI) for the possible RI values. Additionally, an RI value for the downlink CC is selected according to total payloads of the corresponding CQI/PMI.

Description

201242292 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a method for reporting uplink control information applicable to a wireless communication system and a wireless communication device thereof. [Prior Art] In the current continuous development of the wireless broadband communication network standard, a single base station can support a plurality of component carriers (referred to as CCs) to improve the overall throughput. In a wireless communication system, the base station may first activate - the component carrier 'e.g. as the primary component carrier CC)' while maintaining the remaining operational component carriers deactivated. For example, the base station selects the enable component carrier #〇 for the two component carriers #〇, #1 ' that have been configured (c〇nflgured) while maintaining the component carrier #1 as disabled. Assuming that the base station has enabled component carrier #〇 for a user equipment (referred to as UE) at time t1, the user equipment needs to perform at least three operations on the component carrier #〇, for example: (丨) Receiving data of a downlink channel (for example, 'pDCCH or PDSCH specified in the 3GPP standard), (2) transmitting uplink data in an uplink channel corresponding to the downlink channel; and (3) measuring a channel of a downlink channel between the base station and the user equipment Quality, or channel state inf〇rmati〇n (CSI for short), and return this CSI to the base station with appropriate resources or appropriate opportunities. At time 3 3 201242292 ' Since component carrier #1 is disabled, the user equipment does not need to perform the above three tasks for component carrier #1. The base σ can control the configured component carrier to be enabled or disabled by sending an instruction message (c〇mmand) to user equipment (referred to as UE). The time point h after the time point The user device receives an enable command sent by the base station to enable the component carrier #1. The enable command is, for example, a command message of a media access control layer (MAC layer). At time point k, the user equipment begins to perform related work on component carrier #1, for example, to make the radio frequency circuit re-adjustment procedure corresponding to component tilt #1 and the phase riding (four) training body in preparation for featy, at time g The time after the point t2 is the amount 2 of the channel state information for the component touch #1 (as in step S13) 〇 at the time point (10) after the time point, where "^, ^ 8 unit time 'this user| Initially correcting the component carrier" - the above three pieces of work. Or, at the time point (10), the base station can send a request message to the device to notify the user device to report the component carrier = CSI of the downlink channel. usable The reported cSI is used for the scheduling of the transmission. In actual operation, for example, in the 3GPP LTE system, the user equipment is required to measure the channel state information of a component carrier #1 - reference ~ 俨 = (CSI-RS). Obtain the (3) measurement data of this component remainder #1, = 3 corresponding csi report. However, between the time point t2 and the time, there is no preset periodic configuration of the CSI_RS signal. The 2 frequency circuit is not ready yet. The user equipment cannot perform the CSI measurement operation of the component 'carrier^4 201242292' and thus cannot generate the corresponding CSI report. In the current 3GPP wireless communication standard, the time point t2+8 to the time t2+8+n (here η During the time between the unit time and the time when the base station requires the user device to reply to the csi report), since the user device cannot successfully measure the channel status information of the component carrier #1, the user device is allowed to return an invalid ( Invalid) CSI report to the base station. The CSI report usually includes three main parameters: (丨) channel quality indicator (or channel quality indicator code, referred to as CQI in this disclosure); (2) Precoding matrix indicator (prec〇(jing matrix indicator 'abbreviated as pMI in the disclosure); (3) rank indicator (referred to as ri in the disclosure). This user equipment can set CQI parameters in the CSI report. "〇" to indicate that this csi report is invalid CSI report (invalid CSI report). PMI and RI are suitable for antenna configuration with multiple inputs and multiple outputs. The way to report CSI reports can be divided into two types: (丨) periodic report (this is the result of dividing the entire CSI report into multiple returns via the uplink control channel (eg puCCH). Finally, the base station integrates all the return content to restore the CSI. Report; (2) aperiodic report, which is dynamically requested by the base station, and reports the entire csi to the base station via the uplink shared channel (eg PUSCH). In the flow of a non-periodic reporting channel status information Csi, the base σ may require the user equipment to provide CSI reports using downlink control information (d〇wnHnk control information). More clearly, the base station can send an uplink bandwidth grant command (叩grant) to the 5 3 201242292 = home installation t. The uplink bandwidth grant command indicates that the user equipment can use the user equipment to target the specific score. 7=: The user equipment transmits the uplink data by using the granted uplink shared channel, and simultaneously reports all (3) reports of the specified component carrier to the base station via the uplink shared channel. σ CSI is reported by msi of mλ effect that m may not be able to successfully measure the specified component carrier, usually this invalid (3) reporting channel (4), such as in the uplink data, CS; [report may include specified component The wideband CQKwideband CQI of the carrier, the CQKsubband CQI of all subcarriers of the specified component carrier, the wideband PMKwideband plane of the specified component carrier, the subband PMI of all subbands of the specified component carrier, and the specified The RI value of the component carrier. SUMMARY OF THE INVENTION The present disclosure proposes a method for reporting an uplink control. According to an exemplary embodiment of the present disclosure, the method of reporting uplink control information is applicable to a wireless communication device supporting multiple component carriers, and includes the following steps. When the wireless communication device is scheduled to transmit an aperiodic channel state information report on an enabled downlink component carrier to a base station via an uplink shared channel, but the wireless communication device has not successfully measured the enabled downlink For channel state information of the component carrier, the wireless communication device performs the following steps on the enabled downlink component carrier: calculating the corresponding channel quality of the plurality of selectable rank indicators 201242292 code values respectively The total load of the indicator code/precoding matrix indicator; and selecting one of the enabled downlink component carriers based on the total load of the corresponding channel quality indicator code/precoding matrix indicator of the selectable rank indicator code values Rank indicator code value. The present disclosure proposes a wireless communication device. According to an exemplary embodiment of the present disclosure, the wireless communication device includes: a transceiver and a communication protocol module. The transceiver is configured to receive a wireless signal sent by a base station and send a wireless signal to the base station. The communication protocol module is connected to the transceiver, configured to receive, by the transceiver, at least a downlink component carrier sent by the base station, and measure channel state information of the at least one downlink component carrier via the transceiver, And receiving a request sent by the base station to send a request message reporting an aperiodic channel state information report about an enabled downlink component carrier via an uplink shared channel. More specifically, when the communication protocol modulates the transmission of the face period channel information report but the communication protocol group has not successfully measured the channel state information of the enabled lower component carrier, the communication protocol is described. The money that has been enabled for the downside component is optional. (4) The code value is 10^ The channel quality refers to the total load of the code/precoding matrix indicator. In addition, the communication protocol module bases on a rank indicator code value of the enabled downlink component carrier based on the number of selectable rank indicator codes = all of the channel quality indicator code/precoding matrix indicator. The above described features and advantages of the present invention will be more apparent from the following description. Searching

S 7 201242292 [Embodiment] As the foregoing user equipment reports an invalid CSI report, it will occupy the system resources of the large injured uplink shared channel, thereby reducing the transmission of the uplink data. This will result in a decrease in the overall throughput. When the user equipment reports an invalid CSI report, it should only be used as an indicator code to inform the base station that the CSI reference signal cannot be successfully measured (for example, the RI value cannot be successfully measured). Therefore, the CSI report should be minimized. Will occupy a large proportion of the uplink shared channel system resources. In the entire content of the disclosure, wireless communication device (wireless

Communication Device) can represent user equipment (jjs Equipment, UE), mobile station (MS), advanced mobile station (AMS), wireless terminal communication device, M2M device, and MTC device. The wireless communication device can be, for example, a digital television, a digital set-top box, a personal computer, a notebook computer, a tablet computer, a small notebook, a mobile phone, a smart mobile phone, a water meter, a gas meter, a meter alarm, a sensor, and Monitors, etc. In the entire disclosure of the disclosure, a base station (BS) may represent an advanced base station, a node B system (node B), and an evolved node B (evolved n〇de; B, eNB). In the present disclosure, the term "downlink" (DL) represents the radio frequency (RF) signal transmission of the radio communication device from the base station to the base station. The term "uplink" (UL) refers to the transmission of RF signals from a wireless communication device to a base station to which it is accessed. Figure 1 depicts a schematic diagram of a positive parent frequency division multiplex frame (〇fdm 犯 _). Please refer to Figure 1 for the relationship between uplink data and CSI data configuration. The horizontal axis of Figure i is the time axis (corresponding to the sub-frame), and the vertical axis 201242292 is the frequency domain axis (corresponding to the frequency domain resource), an 0FDM. The subframe has 14 OFDM symbols, and the two rows of OFDM symbols with the "χ" symbol at the top, for example, the resource unit 14, are only used to configure the reference signal, and the uplink data cannot be placed or placed. Ri value, CQI/PMI data in the CQJ report. The values can be mainly placed in the resource elements with the background in the slash, and the lowermost source cells in the bottom row of the fourth, seventh, and first lines can be seen from the figure j. In some embodiments, There may be 2 resource units per row, such as resource unit 13, which can be used to place magic values, which are placed from bottom to top and according to "1=>1〇=>7=>4, The order is to be placed; CQI/ΡΜΙ 躲 可 可 可 可 可 可 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树 树A resource unit, such as resource unit 12, can be used to place uplink data. It should be noted that when the RI value is selected, the resource unit that is not slanted with the background of the RI value can be used to transmit the uplink and the data to provide the whole. The uplink transmission amount. Similarly, when the RI value is selected, the background of the CQI/PMI data is a resource with two diagonal lines forming a square, which can be used to transmit the uplink data. Referring to Figure 1, the value of the display is shown. The number of resource units can be as shown in the following equation (1). , 4χΜ^^, etc. (1)

K ^ a where 'Q'RI indicates the number of resource lists currently selected or measured for the RI value; 〇RI indicates the number of bits currently selected or measured for the RI value (the number of bits is not changed, but The RI value is a variable number; "the number of subcarriers allowed to be transmitted before 201242292; indicating the current number of OFDM symbols (for example, 12), which is more clearly described as a subframe minus the reference signal (RS). The number of OFDM symbols transmitted, and one subframe has 14 OFDM symbols; K represents the total amount of uplink data protected by data segmentation and Cyclic Redundancy Check code, which is a The total number of resource elements of the FDM subframe; "representing the offset value indicated by the layer above the communication protocol stack" (W) indicates the ceiling function, that is, a minimum integer value of the distance parameter X; min (A, B) indicates that the two highest values are selected in the values a and B. In addition, the value is the maximum number of source cells reserved for the RI value. In addition, in the disclosure, a user equipment (UE) specifies a frequency band that can be transmitted according to an uplink bandwidth grant command (UL grknt) of the base port, which is small, in units of subcarriers (sub_earrier〇. In equation (1) 'The number of the above-mentioned bits cannot be changed, but the case where the RI value is a variable number is, for example, 2 bits, the RI value can be 2, 3 or 4, the field RI is 3 bits, and the RI value can be 1 to 8. ; when 0 magic is 4 digits ^ ^ Symbol governance τ-

The element RI value can be from 1 to 16. It can be known from equation (1) that the ratio of the number of units in the number of units can be reduced by the number of units of the upstream data. Data 嶋 201242292

Q

CQI min iPcQi +

PVSCH β〇Ζ

K Equation (2), where Q'cqi represents the number of resource elements in which CQI/PMI data is placed; 〇cqi represents the number of bits of current CQI/PMI data (the number of bits cannot be changed, but the CQI/PMI content is Variable); L indicates the number of bits required after encoding; indicates the number of subcarriers currently allowed to be transmitted; 7^17 indicates the current number of OFDM symbols (for example, 12), which is more clearly described as a sub-frame deduction reference. The number of 〇fdm symbols that can be transmitted after the signal (RS)' and one sub-frame has 14 OFDM symbols; K indicates the segmentation and cyclic redundancy check (Cyciic)

Redundancy Check) The total amount of uplink data protected by the code, which is the total number of resource elements of an OFDM subframe; indicates the offset value indicated by the layer above the communication protocol stack; Μ indicates the top function; mir^A, Β) indicates Select a minimum value among the values A and B. In addition, in the present disclosure, a user equipment (UE) can transmit a frequency band size of a base station based on an uplink bandwidth grant command (UL grant) in a sub-carrier unit. As can be seen from equation (2), ^ C is CQI/PMI data.

The ratio of the number of resource units required by K to the number of resource units that can place upstream data. In addition, the number of resource units (^^ can be obtained first by equation (1). For example, when 〇CQI<=ll, the L value is 〇; when 〇cqi>1丨, the L value is 8', for example, an extra 8 is needed. The bit element is used to increase the CRC detection protection code. 11 201242292, this method proposes a processing mechanism for the uplink control information, and proposes a method of returning the information to the system of 'receiving a wireless communication of multiple component carriers. The report of the uplink control information is applicable to the scene of the aperiodic report, which is based on the dynamic requirements of the base station. The 'wireless device' sends a CSI report to the base station via the shared channel (for example, pusCH). Figure 1 shows that the general user equipment receives the base station and requests the uplink data to be sent via the uplink shared channel, and at the same time requests the return via the uplink bandwidth grant command: the CSI report specifying the enabled component or all the enabled component carriers. Base. Expected received uplink data, CQJ/PMJ data and corresponding RI number, configuration case '2 shows another kind of orthogonal frequency division multiplexing subframe. 2 shows a user device because to make Measure cSI, decide to ignore the requirements of the base station (4) - specify the CSI report of the wired component carrier or all enabled component carriers, and the user equipment decides to only send the uplink data, placing the uplink data in the background blank. Resource unit (e.g., resource unit 21). At this time, the background is a square resource unit (e.g., resource unit 22), for example, the reference signal is still configured. That is, the user equipment decides not to send an invalid CSI report. The base station expects to receive uplink data, CQI/PMI data and corresponding RI value configuration, but the OFDM subframe received by the base station by the user equipment obviously does not conform to the pre-amplitude CSI signal format. Resulting in a base station decoding error 'or further causing the base station to require the user equipment to resend the CSI ^ message' to reduce the overall transmission amount. However, the 'right user device cannot successfully directly measure the m 12 201242292 value of any component carrier (this is unsuccessful) Measuring the CSI of this component carrier', it is impossible to further determine the CQI/PMI data, or the resource unit required to calculate the RI value and CQI/PMI data. If the user equipment is to report an invalid CSI report but randomly selects the RI value of the component carrier, the overall load of the CQI/PMI data corresponding to a RI value period may be selected. Thus, the uplink data is The number of resource units that can be placed will be reduced, which will reduce the overall transmission capacity or transmission efficiency. For example, the following table 1 shows the character width of the 2 antenna ports (antenna ports) and 4 antenna ports under different rank parameters (bit width) All the fields in Table 1 respectively represent the necessary parameters of the subcarrier channel quality information report configured by the upper layer of the communication protocol, such as: wideband CQI codeword and PMI data. In Table 1, rank=l, 2 represents the RI value. Shelf ^ A character width 2 days 驽 Rank = 1 ί port Ό Λ 4 days 衮 l port broadband channel quality code word 0 are - wh ^ η - η ~ 4 ivflilK a L 4 KanK — i 4 Rank > 1 4 See channel quality code word 1 0 4 0 4 indicator 2N N 4N 4N The value N in Table 1 can be calculated by using equations (3) and (4) and referring to Table 2 to obtain N^} equation (3) , ^ in the 'parameter N can obtain the current system bandwidth < value and ~ subcarrier size k, and can obtain the number of subcarriers M at the same time, in s 13 201242292 equation (3), "β1 indicates the top Function. Table 2 k (RBs) Μ 6-7 N/AN/A- 8-10 2 1 Ϊ1-26 2 3 27-63 3 5 64-110 4 6 In Table 2 'resource block ( (resourcebi〇ck , rb) is defined as the basic unit of the resource in a subframe: for example, 1 RB is composed of 12 carriers in the frequency domain; system bandwidth representing a component carrier; k is in RB. In the example of the 2 antenna port, if the user equipment randomly selects the RI value of the component carrier, the poor condition may be selected. That is, the overall load of the final CQI/PMI data is large. For example, In the case of 2 antenna ports, if rank=l is randomly selected, the overall load of the final CQI/PMI data is 4+0+2N, which is obviously larger than the overall load 4+4+N of the final cMI data of rank=2. Similarly, in the example of the 4-antenna port of Table 1, if the user equipment randomly selects the R:[value of the component carrier, the worse case may be selected. That is, the overall load of the final CQI/PM data is larger. For example, in the case of 4 antenna ports, if the rank=3 is randomly selected, the overall load of the final CQI/pMi data is 4+4+4N, which is obviously larger than the overall load 4+Q of the CQI/PMI data of the rank=i. +4N. 201242292 Table 3 Block character width Rank = 1 Rank = 2 Rank = 3 Rank =~4~ Broadband channel quality indicator 矫 4 4 4 Broadband channel quality indicator Lining 1 0 4 4 4 Broadband / Pre Code indication Yu il 4 4 2 2 Sub-band 笫 Second pre-coding refers to ^ 4N 4N 4N 3N Field character width Rank = 5 Rank = 6 Rank = 7 Rank = 8 Broadband channel quality indicator 〇 4 4 4 Broadband Channel quality refers to the non-conformity 1 4 4 4 4 broadband first precoding indicator il 2 2 2 0 With the second precoding indicator i2 0 0 0 0 Table 3 presents the necessary parameters of the wideband subcarrier channel quality information report of the 8 antenna port in the case of different rank parameters, such as: wideband CQI codeword Subcarrier differential CQI codeword and PMI data. In Table 1, rank=l,2, 3, 4, 5, 6, 7, 8 represents the RI value. In the example of the 8-antenna port of Table 3, if the user equipment randomly selects the RI value of the component carrier, the overall load of the final CQ!/PMI data may be large. For example, in the case of an 8-antenna port, if the rank=2 ’ final CQI/|>Mi data is randomly selected, the overall load is 4+4+4+4Ν,

S 15 201242292 is obviously larger than the overall load 4+4+0+0 of the final CQI/ΡΜΙ data with rank=8. It can be seen from the above example that the total load (data amount) of the final CSI report depends on the RI value, and it can be known that after proper calculation and judgment, an RI value should be selected, which corresponds to the overall load of the CSI report and requires a minimum resource unit or Less resource units. FIG. 3 is a functional block diagram of a wireless communication device according to an exemplary embodiment of the present disclosure. Referring to FIG. 3, the wireless communication device 3 includes a transceiver 30, a communication protocol module 302, and a memory 3〇3. Both the transceiver 301 and the memory 303 are connected to the communication protocol module 302. Transceiver 301 is used to transmit and receive radio frequency signals from the base station in its radio coverage. For example, the transceiver 3〇1 is used to perform analog digital 彳§ conversion (ADC), digital analog signal conversion (DAC), modulation processing, demodulation processing, signal amplification processing, low-pass filtering, band-pass filtering, etc. . The transceiver module 21 provides a message of the received radio frequency signal (obtained by the radio signal transmitted by the base station or the wireless communication network) to the communication protocol module 302, and modulates the data provided by the communication protocol module 3〇2. The modulated wireless signal is modulated, and the modulated wireless signal is further transmitted to the wireless k network or the base station. The protocol module 72 is coupled to the transceiver 301' for receiving messages from the base station, processing commands in the messages, or performing corresponding steps based on parameters in the messages. The protocol module 302 can include a processor and its embedded software or program, the embedded software or the firmware program includes a code of the communication protocol stack, and the processor of the protocol module 3〇2 performs communication protocol stacking. In the code, the protocol module 302 can specify the enabled downlink information (CSI) via the reference signal received by the transceiver 3 [16 201242292] and the method of reporting the uplink control information (refer to the following). Figure 4 or the embodiment of Figures 5A-7B). The related step communication protocol module 302 can also determine the unit (not a numerical value to assist in the sum of the multiple values and the CQI/PMI data to a minimum value among the plurality of possible threshold values). RI = 03 is used to temporarily store the parameter value or calculate the m value. The RI number depends on the RI number _ CQI / PMI series (four) number ' or the temporary memory space as a comparison value. ,, 疋In addition, the wireless communication device 30 may further include other embodiments, such as a router and an antenna module, to achieve the foregoing functions of transmitting and receiving (4), connecting the module 302, and the memory 303. FIG. 4 is a diagram showing a method for reporting uplink control information according to an exemplary embodiment of the present disclosure. The method for arranging the uplink (fourth) information is applicable to when a user equipment is connected to the base station and requests to send uplink data via the uplink shared channel, and the base station also requires the user equipment to perform at least one component that has been enabled (or just enabled). When the carrier provides its CSI report, this user device cannot provide a valid CSI report. The reason why a valid CSI report cannot be provided for a component carrier includes that the component carrier has just been enabled, so there is no suitable system resource (for example, a downlink reference signal) to measure its CSI, or to request this component. When the CSI of the carrier is reported, the periodic downlink reference signal is not encountered, and thus the CSI of the component carrier cannot be successfully measured. In the method for reporting the uplink control information, when a user device encounters the above scenario, the user device (for example, the wireless communication device 30) may set the message amount of the CQI field of the CQI report to be 201242292, ie, ,. Then, the user equipment may select an RI value of each enabled component carrier for at least one enabled component carrier that needs to report the CQI report (because there is no actual measurement of the RI value of the enabled component carrier), The number of 〇FDM symbols that make the CQj report (including CQI data/PMI data/ri value) occupy the upstream shared channel is the smallest or relatively small. In order to clearly describe the technical content of the method for the uplink control information, please refer to FIG. 3 and FIG. 4 simultaneously. In step S4i, when the wireless communication device 30 is scheduled to transmit an enabled downlink branching carrier via an uplink shared channel. When a non-periodic channel status information is reported to a base station, but the communication protocol module 3〇2 of the wireless communication device 30 has not successfully measured the channel status information of the enabled downlink component carrier via the transceiver 301 At this time, the communication protocol module 302 can perform the following steps S42 to S43 on the enabled downlink component carrier. In step S42, the communication protocol module 3〇2 calculates a corresponding channel quality indicator code (corresp〇nding CQI) of the plurality of selectable rank indicator code (RI) values. / The total load of the Precoding Matrix Indicator (PMI). The selectable rank indicator code value can be referred to, for example, the tables of Tables 1 and 3. In the present embodiment, the memory 3〇3 stores these scalable tables, which respectively record the selectable rank indicator code values for different component carrier configurations. In step S43, the communication agreement module 〇2 selects one of the enabled downlink component carriers according to the total load of the corresponding channel quality indicator code/precoding matrix indicator 18 201242292 of the selectable rank indicator code values. Rank indicator code (RI) value. 5A and 5B are flowcharts illustrating a method of reporting uplink control information in accordance with an exemplary embodiment of the present disclosure. Referring first to FIG. 5A, the method for reporting the uplink control information is applied to the wireless communication device 30, and the specific implementation method of the method for reporting the uplink control information of FIG. 4 is more clearly illustrated and includes the following steps. In step S501, the communication protocol module 3〇2 of the wireless communication device 30 determines whether or not the uplink bandwidth grant (the first address grant) for the uplink shared channel (e.g., 'PUSCH) transmission transmitted by the base station is received via the transceiver 301. The message, and the upstream bandwidth grant message also requires the wireless communication device 3 to report the CSI report. In step S501, when the result of the above determination is YES, step S5〇2 is continued after step S501; when the result of the determination is NO, step S72 is continued after step S501. In step S72, the communication protocol module 〇2 of the wireless communication device 30 selects a periodic reward for CSI reporting via the uplink control channel (e.g., PUCCH). In step S502, the protocol module 302 performs the following steps S5 to 3, S513 for all the enabled downlink component carriers of the base station. That is, the communication protocol module 302 performs the following steps S503 to S513 for an enabled downlink component carrier, that is, in the memory 303, the library (not shown) marks which enabled downlink component carriers. These steps have been performed, and an enabled downstream blade carrier that has not been subjected to the following steps S5〇3 to S5i3 (including performing only one of the steps) is selected until all enabled downstream component carriers are enabled. It is selected and executed 201242292 through any of the following steps S503 to S513. Then, after =CQ:[Report to the base station, all the flags of the enabled downlink downlink carrier can be cleared to facilitate the execution of the next aperiodic return uplink control information. In step S503, the protocol module and the group 302 determine whether the enabled downlink component carrier is to transmit the report of the enabled downlink component carrier via the uplink shared channel for the currently selected enabled downlink component carrier. In step S503, when the foregoing determination result is YES, step S5〇4 is performed immediately after the step; when the foregoing determination result is S503, step S5〇le is re-executed, and the canister group 302 is activated. It is determined that the currently selected downlink component carrier is invalid for the currently selected lower blade carrier (that is, the RI value of the enabled downlink component carrier cannot be successfully measured) csi. In the step (10) 4, the step S505 is continued after the foregoing determination of the knot m1; and the step fiber is re-executed after the step S504. . If the value is no, in step s%5, 'the communication protocol module 3〇2 has enabled the downstream component Yi, and the invalid CSI = pick = the judgment result is no, in step ^ 3〇2 has been caused The carrier in the lower boring tool is prepared to correspond to the cQm data_RI/RI value. In step τ, it is possible to return to 20 201242292 to perform step S502 ′ or to perform step 708 after all the enabled downlink component carriers have been subjected to the steps S503 to S513. In step S508, the valid CQI data/ρΜι data/RI value S50 of the enabled downlink component carrier is reported for the currently selected enabled downlink component carrier. In step S507, the communication protocol module 3〇2 prepares CQI data/PMI data corresponding to the enabled downlink component carrier for the currently selected enabled downlink component carrier. After step S5〇7, it may be returned to re-execute step S502′ or after all the enabled downlink component carriers have been subjected to the steps S503 to S513, “return all enabled downlinks via the uplink shared channel”. The CQI data/PMI data of the CSI report of the component carrier (step S509). In step S511, the protocol module 3〇2 calculates the total load of the corresponding CQI data/pMI data generated by the RI value for each of the possible selected RI values for the currently selected enabled downlink component carrier ( Payload).

In step S5U, the communication protocol module 3〇2 is for the currently selected enabled downlink component, and the total load of the CQ data generated by the county is the value of the minimum load. At step S512

Step S514 can then be performed to generate an RI value for the invalid csi report. In step S513, the protocol module 3〇2 obliquely selects the currently selected enabled downlink component carrier, and prepares an invalid CSI report according to the selected RI value (which includes the selected RI value, corresponding ton data & Calendar data). After step S513, step S5105 can be performed to generate no

S 21 201242292 CSI data/PMI data for CSI reports. The invalid csi report prepared in step S513 can be temporarily stored in the memory 3〇3, and after all the enabled downlink component carriers have been subjected to the partial steps of step S503 to step S513, all the rewards are reported via the uplink shared channel. The CQI data/PMI data/RI value of the downlink component carrier is enabled. Returning to step S502 after step S513. 6A and FIG. 6B are flowcharts illustrating another method for reporting uplink control information according to an exemplary embodiment of the disclosure. Referring to FIG. 6A first, step S601 to step S6〇9 in FIG. 6A are substantially similar to step S501 to step S5〇9 in FIG. 5A, and step S6〇1, step S6〇3 to step S609 are not repeated herein. Detailed technical content. When the result of the determination in step S601 is NO, the second step S820 is continued after the step (1). In step S82, the communication protocol module 302 of the wireless communication device 3 selects to perform CSI report via the uplink control channel (e.g., pucCH). In addition, in step (10), the protocol module, and the 302 mother performs the following steps on an enabled downlink component carrier at one time, 603 to step S613', that is, the database in the memory 3〇3 (not shown in green) Note =, already, _ downlink component carrier has performed these steps, and selected - performed the following steps S6 〇 3 to step S613 (including only

One of the downlink component carriers of the ί-step is enabled until all the failed downlink component carriers are selected and any of the following steps S6〇3 to S613 are performed. Then, after sending the phantom report to the base port, all the tags of the enabled downlink component carrier can be cleared, so that the next aperiodic report of the uplink control information is performed. 22 201242292 Please refer to FIG. 6B. In step S611, the protocol module 302 calculates the corresponding CQI data/PMI data generated by the RI value for each possible RI value for the currently selected enabled downlink component carrier. The total load. In step S612, the protocol module 302 selects an RI value of the generated CQI data/PMI data for the currently selected enabled downlink component carrier to be less than a preset threshold. For example, the preset threshold is 80% of the total number of resource units that can be placed. After step S612, step S614 may be performed to generate an RJ value for the invalid CSI report. In step S613, the communication protocol module 3〇2 prepares an invalid csi report (including the selected RI value, corresponding data and ρΜι data) according to the selected pj value for the currently selected enabled downlink component carrier. . After step S613, step S615 may be performed to generate CCJI data/PMI data of the invalid CSI report. The csi report prepared in step S613 can be temporarily stored in the memory 3〇3, and after all the enabled downlinks are performed, the quantity carriers are executed through the steps S6〇3 to S613, and then reported through the uplink shared channel. All CQI data/PMI data/ri values of the downlink component carrier are enabled. Returning to step S602 after step S613 is returned. On-line 4 presents 1 antenna port, 4 antenna port and 8 antenna port, which corresponds to the highest CQI/PMI data saving ratio of 8 in the case where ^iiSyStem is 2 〇B. It can be seen from Table 4 that in the format of the inch and wideband H indicator code csi, the method of reporting the uplink control information via the pick-up 5Α~图5Β can up to 5% of the resource units of the uplink shared channel. The invalid report σ is transmitted but can be used to transmit valid upstream data. 23 1 201242292 Table 4 System Bandwidth = 20 MHz 2 Antenna Port 4 Antenna Port 8 Antenna Port Wide T Channel Quality Refers to the Code CSI Format 14.75% 6% 87.5% Communication Protocol Stack Upper Layer Settings CSI Format 47.54% 46.88% 44.12% Subband Channel Quality indicator code CSI format 17.65% 36.84% 34.78% Table 5 presents the highest CQI/PMI data savings ratio for 2 antenna ports, 4 antenna ports and 8 antenna ports corresponding to different CSI formats with a system bandwidth of 10 MHz. As can be seen from Table 4, in the broadband channel quality indicator code csi format of the 8-antenna port, up to 87 5% of the resource unit of the uplink shared channel can be saved by using the method of reporting the uplink control information of FIG. 5A to FIG. 5B. There is no need to transmit invalid CSI reports but can be used to transmit valid upstream data. Table 5 System Bandwidth=1〇ΜΗ7 2 Antenna Port 4 Antenna Port 8 Antenna Port Broadband Channel Quality Indicator Code CSI Format 11.11% 9.1% 83.33% Communication Protocol Stacked; 设置 Set CSI Format 46.67% 45.83% 42.31% Subband Channel Quality Indicator Code CSI Format 20.7% 42.42% 39.02% ^ The table presents the basic parameters of the simulation scenario for uplink data performance. Then, Table 7 presents the simulation results produced in the case of the scenario as shown in Table 6. Table 7 is only a simulation result of an exemplary embodiment, and is not intended to limit the manner in which 24 201242292 describes 5 A. For example, as shown in Table 7, the method of using 5gBf to return/report the uplink control information by using the previous uplink, the minimum (2.5) resource is required to transmit the invalid CSI report, but the system resources of the same uplink data are transmitted. To 97 articles. In addition, the method of reporting the uplink control information in FIG. 5B,

1 dB Table 6 Parameter Value System Bandwidth J ~~~20ΜηΓ~~· Number of Downstream Green^Ports 8 CS1 Return Mode Broadband—'^ Scheduled Wireless Multiplier Size 10 ~ Transport Block Size 2,280 Offset Value β 5 Table 7 Worst case 2.5% ^y% 16.38 % 83.62 % 0.07 CSI coding rate

ldB (corresponding to coffee 60km/M percentage of system resources used to transmit CSI __ used to transmit uplink number fatigue " percentage of system resources, upstream data, coding rate, uplink data, signal-to-noise ratio (SNR) performance improvement (The default minimum acceptable BLER = 10%) s 25 201242292 Figure 7 shows a schematic diagram of a multi-point transmission (CPP) wireless communication system. Figure 4, Figure ~ ~ Figure 5Β and 6Α The method of reporting the uplink control information in the frame is applicable to the multipoint transmission wireless communication system of Fig. 7. Referring to Fig. 7, the multipoint transmission wireless communication system includes a plurality of component carriers, but the frequency can be used to distinguish the components. In addition to the carrier, these component carriers can also be distinguished by space (or location). More clearly, the multi-point transmission wireless communication system includes at least one base station 20 connected to a plurality of wireless remote head-end devices (4). Face ^ = RRH) 701 ~ 710. The hexagonal range in Figure 7 represents a rough representation of the base: its coverage. The base station 2 can transmit data and control signaling to the wireless terminal by using an optical fiber (such as a local air interface to each wireless remote head end system). The implementation manner is not limited to the above, and the wireless transmission method is adopted. The adjacent f, 2, and earth '° numbers in the base station 2() are transmitted to the wireless long-range head end equipment 701 to 710 Ning's bruised wireless extension head end equipment. The number of users is ambiguous: the number of carriers / 〇 1 ~ 710 component carriers are set to base station 20 f (four) set 3 〇 '_ have gambling. Wireless far = 26 201242292 The end devices 701 710 710 can be regarded as a joint transmission distributed antenna system composed of a plurality of antennas. For example, when the user device 30 moves between the wireless remote head devices 703, 704, the user device 30 can measure the wireless remote head end δ and prepare the wireless signal of 702~705, but may not be able to measure The wireless signals of the wireless remote headend devices 701, 706 to 710. When the user equipment 3 moves between the wireless remote head devices 703, 704, the base station 2 can request the user equipment 30 to start measuring the CSI of the component carrier transmitted by the wireless remote head device 7 ,, And in the uplink shared channel, the base station 2 reports the CSI report of the component carrier of the wireless=head device 701. As described above, the device 30 can not successfully measure the csi of the component carrier of the wireless remote head device 701 within a preset time interval, so when the CSI report needs to be reported to the base station 20 in the uplink shared channel, the user sets 30 can report the invalid CSI report for the component carrier of the wireless remote head end device 701. In addition, the user device 30 can also utilize the foregoing method for reporting the uplink control information in FIG. 4, FIG. 5A and FIG. 6A to FIG. Reducing the amount of data of the csi report as a whole in the uplink shared channel, and thereby increasing the overall throughput efficiency. As described above, the present disclosure proposes a method for reporting uplink control information applicable to a wireless communication system and a wireless communication device thereof. The method of reporting the upper control information is adapted to support a wireless communication of a plurality of component carriers. When the wireless communication device returns the channel state information of the finger component carrier in response to the request sent by the base station, the wireless communication device does not successfully measure the channel state information of the enabled downlink component carrier, so this 201242292 wireless The channel device transmits the channel state information that is invalid in the report of an aperiodic channel state information about the enabled downlink component carrier through an uplink shared channel, and calculates the value of the selectable rank indicator code separately. Corresponding to the total load of the channel quality indicator code/precoding matrix indicator to select the rank indicator code value of the minimum load or the smaller load. In this way, it is possible to reduce the amount of data in which the invalid channel state information occupies the uplink common channel and relatively increase the uplink transmission amount of the valid data. The present disclosure has been disclosed in the above embodiments, but it is not intended to limit the invention to those skilled in the art, and it is possible to make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of an orthogonal frequency division multiplexing sub-frame. FIG. 2 is a schematic diagram of another orthogonal frequency division multiplexing sub-frame. FIG. 3 is a functional block diagram of a wireless communication device according to an exemplary embodiment of the present disclosure. FIG. 4 is a flow chart showing a method for reporting uplink control information according to an exemplary embodiment of the disclosure. FIG. 5A and FIG. 5B are flowcharts illustrating a method for reporting uplink control information according to an exemplary embodiment of the disclosure. 6A and FIG. 6B are flowcharts illustrating another method for reporting uplink control information according to an exemplary embodiment of the disclosure. 28 201242292 FIG. 7 is a schematic diagram of a multi-point transmission (CoMP) wireless communication system. [Description of main component symbols] 11 to 14: Resource unit 20: Base station 21 to 22: Resource unit 30: Wireless communication device (user device) 301: Transceiver 302: Communication protocol module 303: Memory 701 to 710: Wireless Remote headend devices S41~S43, S501~S515, S601~S615: Step 29

Claims (1)

201242292 Seven patent application scope: A method for reporting uplink control information, which is applicable to a wireless communication device supporting multiple subcarriers, the method comprising: when the =_ signal installation line transmits the component carrier by the uplink shared channel When a non-periodic channel state information report has not successfully measured the channel-like W information of the enabled downlink component carrier, performing the following steps on the enabled downlink component carrier: For a plurality of selectable rank indicator code values, Calculating, respectively, the total load quantity of the corresponding channel quality indicator code/precoding matrix indicator of the selectable values; and the corresponding channel quality of the μ according to the number of the rankable indicator codes refers to the full (four) load of the precoding matrix wire , (4) The rank indicator code value of the carrier in the behavior that has been enabled. 2. If the h-professional target item is used to control the information, the method 'in which' the total load of the corresponding channel quality indicator code/job array indicator of the selectable rank indicator code value Previously, the method further includes: determining whether the aperiodic channel state information report is an invalid channel state information report; and further determining when the aperiodic channel state information is reported as an invalid channel-like message report The invalid channel status information report includes a rank indicator code value. 3. The method for reporting the uplink control information as described in claim 2, further comprising: 30 201242292 2, invalid channel status information report including - rank indicator = value 'the selectable rank indicator code The numerical value, respectively, calculates the total value of the transcode/pre-index. 4. The method of reporting the uplink control information as described in the item _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ And the step of selecting the rank identifier code value comprises: selecting a value of the 5th selectable rank indicator code value, wherein the total load of the channel quality identifier code/precoding matrix indicator is a minimum load amount - rank indicator code value as the rank indicator code value. 5. The method for reporting the uplink control information according to claim 1 of the patent application, wherein the total load of the corresponding j quality indicator code/precoding matrix indicator according to the selectable rank indicator code values The step of selecting the value of the rank indicator code includes: selecting the total load amount of the corresponding channel quality indicator code/precoding moment indicator and a preset threshold value, and selecting the one that has been enabled as the quantity carrier wave Rank indicator code value. 6. The method for reporting an uplink control information according to claim 5, wherein all the load amounts of the corresponding channel quality indicator code/bat matrix indicator are selected according to the preset threshold, h code The number (4) step is private: 31 201242292 = The number of shots is taken as the number of pins, and the total load of the index code/precoding matrix indicator is less than "; the value of the rank indicator code of the limit is used as the rank indication. The value of the return uplink control information channel channel status information reported in item 2 of the patent scope is not - invalid alpha shape. -, 彳 5 heart report, prepare the 6 code matrix indicator / rank indication符 == Zhou Chuan Tong yarn state information report, to feed the channel quality = 补 补 / / 贼 贼 贼 贼 贼 贼 贼 贼 贼 贼 贼 贼 / 贼 / / / / / / / / / / / / / / / / / / The method includes: when it is determined that the invalid channel state information report does not include a rank index, 'prepare the invalid channel quality of the enabled downlink component carrier, “do not pay code/pre-coded car indicator” and pass the face period Sexual channel status The information report 'returns the channel quality that is ineffective for the downstream component. 9. A wireless communication device, comprising: - a transceiver </ RTI> for receiving - a wireless signal transmitted by a base station, and transmitting a wireless ## to the base station; and a communication protocol module connected to the transceiver for Receiving, by the transceiver, at least a downlink component carrier sent by the base station, and measuring channel state information of the at least-downstream component carrier via the transceiver, and receiving a request axis transmitted by the base station by using 32 201242292 The channel sends a request message for reporting the non-provisional channel status information report that has been enabled for the downlink 4 carrier, wherein: D is scheduled to send the aperiodic channel status information report but has not yet measured the enabled downlink When the channel state information of the carrier carrier is A, the protocol component calculates the total load of the corresponding channel quality indicator code/precoding matrix indicator of the plurality of selectable rank indicator code values of the enabled downlink component carrier. And the communication protocol module according to the selectable rank indicator code values=corresponding channel quality indicator code/precoding matrix indicator all negative The carrier selects a rank indicator code value of the enabled downlink component carrier. 10. The wireless communication device according to claim 9, wherein the communication protocol module further determines that the non-periodic channel status information is reported as an invalid channel status information report. Whether the channel status information report includes a rank indicator code value. The wireless communication device of claim 1, wherein: when the communication protocol module determines that the invalid channel state information report includes a rank indicator code value, the communication protocol module The rank-indicating code value may be selected to calculate the total load of the corresponding channel quality indicator code/precoding matrix indicator of the rank indicator code values. The wireless communication device of claim 9, wherein: the communication protocol module selects the corresponding channel quality indicator code/precoding matrix indicator in the selectable rank indicator code values The total load is a rank indicator code value of a minimum load as the rank indicator code value. 13. The wireless communication device of claim 9, wherein: the communication protocol module simultaneously selects a total load amount of the corresponding channel quality indicator code/precoding matrix indicator and a preset threshold value, The rank indicator code value of the enabled downlink component carrier is selected. 14. The wireless communication device according to claim 9, wherein: the communication protocol module selects the selectable rank indicator code values, and the corresponding channel αα quality indicator code/precoding matrix The total load of the indicator is less than the value of the preset threshold value as the rank indicator code value. 15. The wireless communication device according to claim 9 of the patent scope, wherein: when determining that the aperiodic channel status information report is not a channelless status message, the communication protocol module prepares to enable Channel quality indicator of the lower component carrier Ma/precoding matrix indicator/rank indicator code value 'and, (4) Transitive channel (4) information report, to report 34 201242292 Channel quality indicator code/pre-enabled for the downlink component carrier Coding matrix indicator/rank indicator code value. 16. The wireless communication device of claim 10, wherein: the communication protocol module prepares the enabled downlink component carrier when it is determined that the invalid channel state information report does not include a rank indicator value The invalid channel quality indicator code/precoding matrix indicator, and the invalid channel quality indicator code of the mixed downlink component carrier is reported via the aperiodic channel state information report. S 35