Base station apparatus, communication method, terminal apparatus and integrated circuit
First Claim
1. An integrated circuit comprising:
- at least one input, which, in operation, receives an input; and
circuitry coupled to the at least one input, the circuitry, in operation, controls;
receiving from a communication partner apparatus a first downlink control signal over a basic downlink component carrier and a second downlink control signal over another downlink component carrier, wherein the first downlink control signal includes uplink resource allocation information related to a resource allocation of an uplink component carrier and first downlink resource allocation information related to a resource allocation of the basic downlink component carrier, and the second downlink control signal includes second downlink resource allocation information related to a resource allocation of the another downlink component carrier, wherein for the first downlink control signal when a number of uplink information bits necessary to transmit the uplink resource allocation information is different from a number of downlink information bits necessary to transmit the first downlink resource allocation information, zeros are appended by the communication partner apparatus to a smaller one of the uplink resource allocation information and the first downlink resource allocation information until a payload size of the smaller one equals a payload size of a larger one, and Cyclic Redundancy Check (CRC) bits are further added by the communication partner apparatus to the uplink resource allocation information and the first downlink resource allocation information; and
using the payload size of the larger one of the uplink resource allocation information and the first downlink resource allocation information in decoding processing of the first downlink control signal.
0 Assignments
0 Petitions
Accused Products
Abstract
Provided are a radio terminal device, a radio base station device, and a channel signal forming method which can prevent quality degradation of the downlink resource allocation information by reducing the frequency of the zero information addition process to the downlink resource allocation information when executing communication using an uplink unit band and multiple downlink unit bands correlated to the uplink unit band. A base station includes: a PDCCH generation unit which includes the uplink allocation information relating to the uplink unit band only in some of the channel signals formed for each of the downlink unit bands; and a padding unit which adds zero information to the downlink allocation information only in the selected some channel signals having the bandwidth of the corresponding downlink unit band smaller than that of the uplink unit band until the downlink allocation information size becomes equal to the uplink allocation information size.
-
Citations
16 Claims
-
1. An integrated circuit comprising:
-
at least one input, which, in operation, receives an input; and circuitry coupled to the at least one input, the circuitry, in operation, controls; receiving from a communication partner apparatus a first downlink control signal over a basic downlink component carrier and a second downlink control signal over another downlink component carrier, wherein the first downlink control signal includes uplink resource allocation information related to a resource allocation of an uplink component carrier and first downlink resource allocation information related to a resource allocation of the basic downlink component carrier, and the second downlink control signal includes second downlink resource allocation information related to a resource allocation of the another downlink component carrier, wherein for the first downlink control signal when a number of uplink information bits necessary to transmit the uplink resource allocation information is different from a number of downlink information bits necessary to transmit the first downlink resource allocation information, zeros are appended by the communication partner apparatus to a smaller one of the uplink resource allocation information and the first downlink resource allocation information until a payload size of the smaller one equals a payload size of a larger one, and Cyclic Redundancy Check (CRC) bits are further added by the communication partner apparatus to the uplink resource allocation information and the first downlink resource allocation information; and using the payload size of the larger one of the uplink resource allocation information and the first downlink resource allocation information in decoding processing of the first downlink control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An integrated circuit comprising:
-
reception circuitry, which, in operation, receives from a communication partner apparatus a first downlink control signal over a basic downlink component carrier and a second downlink control signal over another downlink component carrier, wherein the first downlink control signal includes uplink resource allocation information related to a resource allocation of an uplink component carrier and first downlink resource allocation information related to a resource allocation of the basic downlink component carrier, and the second downlink control signal includes second downlink resource allocation information related to a resource allocation of the another downlink component carrier, wherein for the first downlink control signal when a number of uplink information bits necessary to transmit the uplink resource allocation information is different from a number of downlink information bits necessary to transmit the first downlink resource allocation information, zeros are appended by the communication partner apparatus to a smaller one of the uplink resource allocation information and the first downlink resource allocation information until a payload size of the smaller one equals a payload size of a larger one, and Cyclic Redundancy Check (CRC) bits are further added by the communication partner apparatus to the uplink resource allocation information and the first downlink resource allocation information; and processing circuitry, which is coupled to the reception circuitry and which, in operation, uses the payload size of the larger one of the uplink resource allocation information and the first downlink resource allocation information in decoding processing of the first downlink control signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
Specification