The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform

Hiroyuki Ishii - One of the best experts on this subject based on the ideXlab platform.

  • Investigation on Rate Matching and Soft Buffer Splitting for LTE-Advanced Carrier Aggregation
    2012 IEEE 75th Vehicular Technology Conference (VTC Spring), 2012
    Co-Authors: Kazuaki Takeda, Yuta Sagae, Naoto Ohkubo, Hiroyuki Ishii
    Abstract:

    In the LTE-Advanced Downlink, Carrier aggregation (CA) employing multiple component Carriers (CCs) is an essential technique to achieve a target peak data rate of 1 Gbps. 3GPP RAN WG1 meeting decided to adopt one transport block (TB) per CC, where the TB is the unit of channel coding and hybrid automatic repeat request (HARQ). When CA is applied to an LTE-Advanced UE, the soft buffer which is used for HARQ packet combining must be equally split according to the number of CCs, where the soft buffer size is one of the factors to in defining the LTE-Advanced UE categories. When soft buffer splitting is applied to UEs in a lower UE category, the soft buffer size per CC may not be sufficient and the performance of the HARQ packet combining is not ensured. In this paper, we propose a rate-matching scheme for CA and a new receiver suited to this rate matching scheme. Using the proposed scheme, degradation in the HARQ throughput performance due to the soft buffer splitting can be avoided and the same rate-matching scheme can be applied irrespective of the number of CCs. Simulations results show that the proposed scheme always provides better performance than that for equal splitting rate-matching scheme that reuses Rel-8 LTE rate-matching scheme.

  • VTC Spring - Investigation on Rate Matching and Soft Buffer Splitting for LTE-Advanced Carrier Aggregation
    2012 IEEE 75th Vehicular Technology Conference (VTC Spring), 2012
    Co-Authors: Kazuaki Takeda, Yuta Sagae, Naoto Ohkubo, Hiroyuki Ishii
    Abstract:

    In the LTE-Advanced Downlink, Carrier aggregation (CA) employing multiple component Carriers (CCs) is an essential technique to achieve a target peak data rate of 1 Gbps. 3GPP RAN WG1 meeting decided to adopt one transport block (TB) per CC, where the TB is the unit of channel coding and hybrid automatic repeat request (HARQ). When CA is applied to an LTE-Advanced UE, the soft buffer which is used for HARQ packet combining must be equally split according to the number of CCs, where the soft buffer size is one of the factors to in defining the LTE-Advanced UE categories. When soft buffer splitting is applied to UEs in a lower UE category, the soft buffer size per CC may not be sufficient and the performance of the HARQ packet combining is not ensured. In this paper, we propose a rate-matching scheme for CA and a new receiver suited to this rate matching scheme. Using the proposed scheme, degradation in the HARQ throughput performance due to the soft buffer splitting can be avoided and the same rate-matching scheme can be applied irrespective of the number of CCs. Simulations results show that the proposed scheme always provides better performance than that for equal splitting rate-matching scheme that reuses Rel-8 LTE rate-matching scheme.

Preben Mogensen - One of the best experts on this subject based on the ideXlab platform.

  • LTE UE Energy Saving by Applying Carrier Aggregation in a HetNet Scenario
    2013 IEEE 77th Vehicular Technology Conference (VTC Spring), 2013
    Co-Authors: Mads Lauridsen, Hua Wang, Preben Mogensen
    Abstract:

    In this work it is examined if Downlink Carrier Aggregation (CA) can be used to save UE energy. A dual-receiver LTE release 10 UE is compared with a single-receiver LTE release 8 UE. The models are based on scaling of an existing LTE release 8 UE power model. The energy consumption of the UEs is examined in a Heterogeneous Network scenario consisting of macro and small cells. The unexpected conclusion is that CA UEs can save energy, compared to LTE release 8 UEs, if they, depending on cell load, experience a throughput gain of 20 %. However if the UE throughput is unaltered the energy consumption can increase up to 20 %.

  • VTC Spring - LTE UE Energy Saving by Applying Carrier Aggregation in a HetNet Scenario
    2013 IEEE 77th Vehicular Technology Conference (VTC Spring), 2013
    Co-Authors: Mads Lauridsen, Hua Wang, Preben Mogensen
    Abstract:

    In this work it is examined if Downlink Carrier Aggregation (CA) can be used to save UE energy. A dual-receiver LTE release 10 UE is compared with a single-receiver LTE release 8 UE. The models are based on scaling of an existing LTE release 8 UE power model. The energy consumption of the UEs is examined in a Heterogeneous Network scenario consisting of macro and small cells. The unexpected conclusion is that CA UEs can save energy, compared to LTE release 8 UEs, if they, depending on cell load, experience a throughput gain of 20 %. However if the UE throughput is unaltered the energy consumption can increase up to 20 %.

Kazuaki Takeda - One of the best experts on this subject based on the ideXlab platform.

  • Investigation on Rate Matching and Soft Buffer Splitting for LTE-Advanced Carrier Aggregation
    2012 IEEE 75th Vehicular Technology Conference (VTC Spring), 2012
    Co-Authors: Kazuaki Takeda, Yuta Sagae, Naoto Ohkubo, Hiroyuki Ishii
    Abstract:

    In the LTE-Advanced Downlink, Carrier aggregation (CA) employing multiple component Carriers (CCs) is an essential technique to achieve a target peak data rate of 1 Gbps. 3GPP RAN WG1 meeting decided to adopt one transport block (TB) per CC, where the TB is the unit of channel coding and hybrid automatic repeat request (HARQ). When CA is applied to an LTE-Advanced UE, the soft buffer which is used for HARQ packet combining must be equally split according to the number of CCs, where the soft buffer size is one of the factors to in defining the LTE-Advanced UE categories. When soft buffer splitting is applied to UEs in a lower UE category, the soft buffer size per CC may not be sufficient and the performance of the HARQ packet combining is not ensured. In this paper, we propose a rate-matching scheme for CA and a new receiver suited to this rate matching scheme. Using the proposed scheme, degradation in the HARQ throughput performance due to the soft buffer splitting can be avoided and the same rate-matching scheme can be applied irrespective of the number of CCs. Simulations results show that the proposed scheme always provides better performance than that for equal splitting rate-matching scheme that reuses Rel-8 LTE rate-matching scheme.

  • VTC Spring - Investigation on Rate Matching and Soft Buffer Splitting for LTE-Advanced Carrier Aggregation
    2012 IEEE 75th Vehicular Technology Conference (VTC Spring), 2012
    Co-Authors: Kazuaki Takeda, Yuta Sagae, Naoto Ohkubo, Hiroyuki Ishii
    Abstract:

    In the LTE-Advanced Downlink, Carrier aggregation (CA) employing multiple component Carriers (CCs) is an essential technique to achieve a target peak data rate of 1 Gbps. 3GPP RAN WG1 meeting decided to adopt one transport block (TB) per CC, where the TB is the unit of channel coding and hybrid automatic repeat request (HARQ). When CA is applied to an LTE-Advanced UE, the soft buffer which is used for HARQ packet combining must be equally split according to the number of CCs, where the soft buffer size is one of the factors to in defining the LTE-Advanced UE categories. When soft buffer splitting is applied to UEs in a lower UE category, the soft buffer size per CC may not be sufficient and the performance of the HARQ packet combining is not ensured. In this paper, we propose a rate-matching scheme for CA and a new receiver suited to this rate matching scheme. Using the proposed scheme, degradation in the HARQ throughput performance due to the soft buffer splitting can be avoided and the same rate-matching scheme can be applied irrespective of the number of CCs. Simulations results show that the proposed scheme always provides better performance than that for equal splitting rate-matching scheme that reuses Rel-8 LTE rate-matching scheme.

Yuta Sagae - One of the best experts on this subject based on the ideXlab platform.

  • Investigation on Rate Matching and Soft Buffer Splitting for LTE-Advanced Carrier Aggregation
    2012 IEEE 75th Vehicular Technology Conference (VTC Spring), 2012
    Co-Authors: Kazuaki Takeda, Yuta Sagae, Naoto Ohkubo, Hiroyuki Ishii
    Abstract:

    In the LTE-Advanced Downlink, Carrier aggregation (CA) employing multiple component Carriers (CCs) is an essential technique to achieve a target peak data rate of 1 Gbps. 3GPP RAN WG1 meeting decided to adopt one transport block (TB) per CC, where the TB is the unit of channel coding and hybrid automatic repeat request (HARQ). When CA is applied to an LTE-Advanced UE, the soft buffer which is used for HARQ packet combining must be equally split according to the number of CCs, where the soft buffer size is one of the factors to in defining the LTE-Advanced UE categories. When soft buffer splitting is applied to UEs in a lower UE category, the soft buffer size per CC may not be sufficient and the performance of the HARQ packet combining is not ensured. In this paper, we propose a rate-matching scheme for CA and a new receiver suited to this rate matching scheme. Using the proposed scheme, degradation in the HARQ throughput performance due to the soft buffer splitting can be avoided and the same rate-matching scheme can be applied irrespective of the number of CCs. Simulations results show that the proposed scheme always provides better performance than that for equal splitting rate-matching scheme that reuses Rel-8 LTE rate-matching scheme.

  • VTC Spring - Investigation on Rate Matching and Soft Buffer Splitting for LTE-Advanced Carrier Aggregation
    2012 IEEE 75th Vehicular Technology Conference (VTC Spring), 2012
    Co-Authors: Kazuaki Takeda, Yuta Sagae, Naoto Ohkubo, Hiroyuki Ishii
    Abstract:

    In the LTE-Advanced Downlink, Carrier aggregation (CA) employing multiple component Carriers (CCs) is an essential technique to achieve a target peak data rate of 1 Gbps. 3GPP RAN WG1 meeting decided to adopt one transport block (TB) per CC, where the TB is the unit of channel coding and hybrid automatic repeat request (HARQ). When CA is applied to an LTE-Advanced UE, the soft buffer which is used for HARQ packet combining must be equally split according to the number of CCs, where the soft buffer size is one of the factors to in defining the LTE-Advanced UE categories. When soft buffer splitting is applied to UEs in a lower UE category, the soft buffer size per CC may not be sufficient and the performance of the HARQ packet combining is not ensured. In this paper, we propose a rate-matching scheme for CA and a new receiver suited to this rate matching scheme. Using the proposed scheme, degradation in the HARQ throughput performance due to the soft buffer splitting can be avoided and the same rate-matching scheme can be applied irrespective of the number of CCs. Simulations results show that the proposed scheme always provides better performance than that for equal splitting rate-matching scheme that reuses Rel-8 LTE rate-matching scheme.

Naoto Ohkubo - One of the best experts on this subject based on the ideXlab platform.

  • Investigation on Rate Matching and Soft Buffer Splitting for LTE-Advanced Carrier Aggregation
    2012 IEEE 75th Vehicular Technology Conference (VTC Spring), 2012
    Co-Authors: Kazuaki Takeda, Yuta Sagae, Naoto Ohkubo, Hiroyuki Ishii
    Abstract:

    In the LTE-Advanced Downlink, Carrier aggregation (CA) employing multiple component Carriers (CCs) is an essential technique to achieve a target peak data rate of 1 Gbps. 3GPP RAN WG1 meeting decided to adopt one transport block (TB) per CC, where the TB is the unit of channel coding and hybrid automatic repeat request (HARQ). When CA is applied to an LTE-Advanced UE, the soft buffer which is used for HARQ packet combining must be equally split according to the number of CCs, where the soft buffer size is one of the factors to in defining the LTE-Advanced UE categories. When soft buffer splitting is applied to UEs in a lower UE category, the soft buffer size per CC may not be sufficient and the performance of the HARQ packet combining is not ensured. In this paper, we propose a rate-matching scheme for CA and a new receiver suited to this rate matching scheme. Using the proposed scheme, degradation in the HARQ throughput performance due to the soft buffer splitting can be avoided and the same rate-matching scheme can be applied irrespective of the number of CCs. Simulations results show that the proposed scheme always provides better performance than that for equal splitting rate-matching scheme that reuses Rel-8 LTE rate-matching scheme.

  • VTC Spring - Investigation on Rate Matching and Soft Buffer Splitting for LTE-Advanced Carrier Aggregation
    2012 IEEE 75th Vehicular Technology Conference (VTC Spring), 2012
    Co-Authors: Kazuaki Takeda, Yuta Sagae, Naoto Ohkubo, Hiroyuki Ishii
    Abstract:

    In the LTE-Advanced Downlink, Carrier aggregation (CA) employing multiple component Carriers (CCs) is an essential technique to achieve a target peak data rate of 1 Gbps. 3GPP RAN WG1 meeting decided to adopt one transport block (TB) per CC, where the TB is the unit of channel coding and hybrid automatic repeat request (HARQ). When CA is applied to an LTE-Advanced UE, the soft buffer which is used for HARQ packet combining must be equally split according to the number of CCs, where the soft buffer size is one of the factors to in defining the LTE-Advanced UE categories. When soft buffer splitting is applied to UEs in a lower UE category, the soft buffer size per CC may not be sufficient and the performance of the HARQ packet combining is not ensured. In this paper, we propose a rate-matching scheme for CA and a new receiver suited to this rate matching scheme. Using the proposed scheme, degradation in the HARQ throughput performance due to the soft buffer splitting can be avoided and the same rate-matching scheme can be applied irrespective of the number of CCs. Simulations results show that the proposed scheme always provides better performance than that for equal splitting rate-matching scheme that reuses Rel-8 LTE rate-matching scheme.