一種新的雙模微基站非授權(quán)信道接入方法

廖樹日; 何世文; 楊綠溪

doi:10.11999/JEIT170184

一種新的雙模微基站非授權(quán)信道接入方法

doi: 10.11999/JEIT170184

1.
(東南大學(xué)信息科學(xué)與工程學(xué)院南京 210096) ②(桂林電子科技大學(xué)認(rèn)知無線電與信息處理教育部重點(diǎn)實(shí)驗(yàn)室桂林 541004)

基金項(xiàng)目:

國(guó)家自然科學(xué)基金(61471120, 61422105, 61671145)，桂林電子科技大學(xué)教育部重點(diǎn)實(shí)驗(yàn)室開放基金(CRKL160203)

計(jì)量
- 文章訪問數(shù): 1393
- HTML全文瀏覽量: 228
- PDF下載量: 218
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2017-03-01
- 修回日期: 2017-07-20
- 刊出日期: 2017-11-19

A Novel Dual-band Femtocells Unlicensed Channel Access Mechanism

1.
(School of Information Science and Engineering, Southeast University, Nanjing 210096, China)

Funds:

The National Natural Science Foundation of China (61471120, 61422105, 61671145), The Key Laboratory of Cognitive Radio and Information Processing, Ministry of Education (Guilin University of Electronic Technology) (CRKL160203)

摘要

摘要: 利用非授權(quán)頻段頻譜資源提升網(wǎng)絡(luò)容量需要有效地解決LTE(Long Term Evaluation)與WiFi的共存問題。最近，學(xué)術(shù)界和工業(yè)界相繼提出了授權(quán)頻段輔助接入機(jī)制和雙模微基站技術(shù)提升蜂窩通信系統(tǒng)容量。考慮雙模微基站與WiFi接入點(diǎn)覆蓋范圍存在部分重疊場(chǎng)景，該文提出一種新的雙模微基站非授權(quán)信道接入機(jī)制及聯(lián)合授權(quán)非授權(quán)的優(yōu)化頻譜資源分配方案。仿真結(jié)果表明，雙模微基站和WiFi接入點(diǎn)互不可見時(shí)，新方案相比于現(xiàn)有方案由于考慮了空間復(fù)用具有更好的系統(tǒng)性能；雙模微基站和WiFi接入點(diǎn)互相可見時(shí)，新方案與現(xiàn)有方案性能一致，即兩者分時(shí)獨(dú)立占用非授權(quán)頻段頻譜資源。
- 授權(quán)頻段輔助接入 /
- 雙模微基站 /
- 信道接入機(jī)制 /
- 資源分配 /
- 覆蓋重疊
Abstract: In order to efficiently utilize the unlicensed band to improve the network capacity, it is necessary to solve the problem of the coexistence between Long Term Evaluation (LTE) and WiFi. Licensed-Assisted Access (LAA) and the Dual-Band Femtocell (DBF) which can access both the licensed and unlicensed bands are proposed recently. In this paper, considering the case that a DBF partly overlaps with just one WiFi Access Point (AP), a novel DBF unlicensed channel access mechanism is proposed. Then, the optimal traffic balancing scheme over licensed and unlicensed bands considering the effect of coverage overlap is developed. Numerical results show that if DBF and WiFi AP are invisible mutually, the proposed scheme outperforms the existing scheme in terms of sum utility and throughput because of extra fraction of unlicensed channel time for DBF using spatial reuse. Otherwise the performance is the same as the existing scheme, that is, DBF and WiFi AP use the unlicensed band alternately.
- Licensed-Assisted Access (LAA) /
- Dual-Band Femtocell (DBF) /
- Channel access mechanism /
- Traffic balancing /
- Coverage overlapping

HTML全文

參考文獻(xiàn)(16)

ANDREWS J G, BUZZI S, WAN C, et al. What will 5G be[J]. IEEE Journal on Selected Areas in Communications, 2014, 32(6): 1065-1082. doi: 10.1109/JSAC.2014.2328098.

ABINADER F M, ALMEIDA E P L, CHAVES F S, et al. Enabling the coexistence of LTE and Wi-Fi in unlicensed bands[J]. IEEE Communications Magazine, 2014, 52(11): 54-61. doi: 10.1109/MCOM.2014.6957143.

RATASUK R, MANGALVEDHE N, and GHOSH A. LTE in unlicensed spectrum using licensed-assisted access[C]. IEEE GLOBECOM Workshops, Austin, TX, USA, 2015: 746-751.

LIU F, BALA E, ERKIP E, et al. A framework for femtocells to access both licensed and unlicensed bands[C]. IEEE International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks, Princeton, NJ, USA, 2011: 407-411.

Small Cell Forum, Integrated Femto-WiFi (IFW) Networks, White paper at smallcellforum.org, Feb. 2012. smallcellforum. org/.

KWAN R, PAZHYANNUR R, SEYMOUR J, et al. Fair coexistence of licensed assisted access lte (laa-lte) and wi-fi in unlicensed spectrum[C]. Computer Science and Electronic Engineering Conference, Colchester, UK, 2015: 13-18.

ALMEIDA E, CAVALCANTE A M, PAIVA R C D, et al. Enabling LTE/WiFi coexistence by LTE blank subframe allocation[C]. IEEE International Conference on Communications, Budapest, Hungary, 2013: 5083-5088.

YIN R, YU G, MAAREF A, et al. Adaptive LBT for licensed assisted access LTE networks[C]. IEEE GLOBECOM, San Diego, CA, USA, 2015: 1-6.

CHOI S and PARK S. Co-existence analysis of duty cycle method with Wi-Fi in unlicensed bands[C]. IEEE International Conference on Information and Communication Technology Convergence, Jeju, South Korea, 2015: 894-897.

ELSHERIF A R, CHEN W P, ITO A, et al. Resource allocation and inter-cell interference management for dual- access small cells[J]. IEEE Journal on Selected Areas in Communications, 2015, 33(6): 1082-1096. doi: 10.1109/JSAC. 2015.2416990.

LIU F, ERKIP E, BELURI M C, et al. Dual-band femtocell traffic balancing over licensed and unlicensed bands[C]. IEEE International Conference on Communications, Ottawa, ON, Canada, 2012: 6809-6814.

LIU F, BALA E, ERKIP E, et al. Small-cell traffic balancing over licensed and unlicensed bands[J]. IEEE Transactions on Vehicular Technology, 2015, 64(12): 5850-5865. doi: 10.1109/ TVT.2014.2387798.

ELSHERIF A R, CHEN W P, ITO A, et al. Adaptive small cell access of licensed and unlicensed bands[C]. IEEE International Conference on Communications, Budapest, Hungary, 2013: 6327-6332.

FANG Y, WANG C, DING G, et al. Optimal traffic balancing scheme in small cells between licensed and unlicensed bands [C]. IEEE International Conference on Wireless Communications Signal Processing, Nanjing, China, 2015: 1-6.

CHEN Q, YU G, SHAN H, et al. Cellular meets WiFi: Traffic offloading or resource sharing[J]. IEEE Transactions on Wireless Communications, 2016, 15(5): 3354-3367. doi: 10.1109/TWC.2016.2520478.

MO J and WALRAND J. Fair end-to-end window-based congestion control[J]. IEEE Transactions on ACM Networking, 2000, 8(5): 556-567. doi: 10.1109/90.879343.

相關(guān)文章

施引文獻(xiàn)

資源附件(0)

訪問統(tǒng)計(jì)