Mika Rinne

• DSc (PhD)
• Principal Investigator at Nokia

For several years, the 3GPP approach has built on the use of complementary wireless local area network (WLAN) technology by integrating, interworking or aggregating it under the control of the mobile operator network. This chapter introduces the unlicensed spectrum access technologies from the 3GPP standard point of view. It provides a description...

The use of license-exempt bands offers a promising opportunity to additionally enhance operator networks to meet the future traffic demand. The recent specification efforts in 3GPP have resulted in two major aggregation features that enable LTE networks to benefit from unlicensed spectrum via WLAN. In this article, we provide a thorough overview of...

An apparatus for providing an indication of device to device communication capability may include a processor and a memory storing executable instructions. In response to execution of the instructions by the processor, the apparatus may perform at least receiving an indication with respect to status of an application or a request by the application...

Authentication key generation for local area network communication, including: participating in communication of a message comprising a cipher suite selection type indicating cellular network compatible cipher suite; and creating cellular network compatible authentication keys according to said cipher suite selection type.

Allocation information is transmitted in a communications system in accordance with at least one allocation rule for indicating allocation of sets of transmission resources to communications devices. The at least one allocation rule is defined for associating sequences of sets of transmission resources with communications devices, and a communicati...

In one exemplary aspect thereof the invention provides a method that operates to receive information through at least one input of a protocol layer packet segmentation unit and to dynamically vary packet segment size in accordance with the received information prior to transmission to a receiver. The information received through the at least one in...

Evolved Universal Terrestrial Radio Access (EUTRA), known as the Long Term Evolution (LTE) technology, brings cellular communication to the fourth generation (4G) era. In this article, we discuss the most important characteristics of LTE; its simplified network architecture which allows ultimate means for adaptation of the radio transmission to the...

In this article device-to-device (D2D) communication underlaying a 3GPP LTE-Advanced cellular network is studied as an enabler of local services with limited interference impact on the primary cellular network. The approach of the study is a tight integration of D2D communication into an LTE-Advanced network. In particular, we propose mechanisms fo...

Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access (E-UTRA) is a new technology that targets the long-term evolution (LTE) of third generation. The E-UTRA technology has recently been standardized by the Third-Generation Partnership Project (3GPP) as a set of (series_36) specifications. The standardization process is...

In this paper the possibility of device-to-device (D2D) communications as an underlay of an LTE-A network is introduced. The D2D communication enables new service opportunities and reduces the eNB load for short range data intensive peer-to-peer communication. The cellular network may establish a new type of radio bearer dedicated for D2D communica...

This paper presents a novel method to generate a localized mode single-carrier frequency division multiple access (SC-FDMA) waveform. Instead of using DFT-spread OFDMA (DFT-S-OFDMA) processing, the new structure called SCiFI-FDMA relies on frequency and time domain interpolation followed by a user-specific frequency shift. SCiFI-FDMA can provide si...

In this paper we study the packet scheduling of mixed traffic in UTRAN long term evolution downlink. A dynamic packet scheduling (PS) architecture with service classification, queue specific sorting and scheduling algorithms as well as frequency domain PS has been presented to differentiate scheduling of different traffic classes. Simulation result...

The evolved UMTS terrestrial radio access (E-UTRA) is a new technology being standardized by the 3GPP . E-UTRA targets for a long term evolution of 3G UMTS. This paper addresses the fundamentals of the E-UTRA technology and describes especially its gain mechanisms. As the standardization work is progressing rapidly, this paper does not focus on com...

For coded transmission over band-limited channels with inter-symbol interference, Douillard proposed the turbo equalization approach which has been studied widely. It is an iterative equalization/decoding algorithm and results in tremendous performance improvement. This paper studies a turbo equalization approach, which includes our recently propos...

Filter bank based frequency domain equalization provides an attractive scheme for single-carrier transmission of broadband wireless communications. With mildly frequency-selective subband processing and a modest number of subbands, it is able to provide better performance than conventional FFT approach with a higher number of subbands. Another bene...

Channel equalization in filter bank based multicarrier (FBMC) modulation is addressed. We utilize an efficient oversampled filter bank concept with 2x-oversampled subcarrier signals that can be equalized independently of each other. Due to Nyquist pulse shaping, consecutive symbol waveforms overlap in time, which calls for special means for equaliz...

This paper investigates the use of complex-modulated oversampled filter banks (FBs) for frequency-domain equalization (FDE) in single-carrier systems. The key aspect is mildly frequency-selective subband processing instead of a simple complex gain factor per subband. Two alternative low-complexity linear equalizer structures with MSE criterion are...

Complex modulated filter bank (FB) based frequency-domain equalization (FDE) provides an attractive single-carrier scheme for broadband wireless communications. With mildly frequency selective subband processing and modest number of subbands, it is able to provide better performance than the conventional FDE with FFT due to the lack of guard-interv...

We present an analysis of the fast alpha switching (FAS) technique in WCDMA using closed loop (CL) mode 1 transmit diversity and utilizing the high speed physical downlink shared channel (HS-PDSCH) for data service. When applied on the HS-PDSCH channel, CL mode 1 utilizes the antenna weights used on the associated dedicated physical channel (DPCH)....

In this paper intra-frequency handover in UTRA TDD network is addressed. A simple WCDMA handover, tailored to a TDD operation, is considered. This gives rise to careful setting of different handover parameters, and in here we now give an emphasis to the effects of handover delays. This is crucial in determining the robustness of a certain parameter...

The high-speed downlink packet access (HSDPA) is currently an important research topic to enhance the downlink performance of a WCDMA network. It is a set of schemes built on top of the downlink shared channel (DSCH), resulting an extremely high bit rate for a single user in the downlink. When the channel condition is good, a high utilization of th...

Adaptive modulation and coding (AMC) has gained a lot of attention in the research targeting for the standardization of the high speed downlink packet access (HSDPA). The idea is to adapt the transmission to the fast changing channel conditions by the use of different modulation and coding schemes (MCS). In this paper, an algorithm is presented for...

In this paper, the protocol performance of the Voice over IP (VoIP) packet service on the WCDMA radio transport channels is studied. In a packet network, the transport channels between the mobile stations and the radio access network may carry radio bearers with different delay, throughput and quality of service requirements. Voice transmission ove...

Analytical techniques for GSM traffic channel capacity analysis are studied. The results are represented for high speed circuit-switched data (HSCSD) traffic channels co-existing with voice traffic channels in a GSM cell. In a GSM system the base station has a finite number of traffic channels, from which one voice terminal occupies one traffic cha...

A set of algorithms are studied for high density mobile networks to pack coexisting time slots of wideband time division multiple access (WTDMA) frames in an effective way. The method is introduced as radio resource knapsack packing, as packet traffic is the main consideration. The method includes centralised channel assignment and power control al...

A set of optimisation algorithms are studied for high density wideband code division multiple access (WCDMA) mobile networks. The method to be introduced is a radio resource knapsack packing, as packet traffic is the main consideration. The method includes centralised packet scheduling (PS) and power control (PC) algorithms that will maximise a uti...

A new method to enhance the quality of a telephone connection by suppressing noise and disturbances in speech signals is presented. As the noise is evenly spread over the entire signal band, a nonlinear filtering algorithm is required to improve the signal-to-noise-ratio. The system is being realized as an analog full custom ASIC using switched cap...

In this paper, the Medium Access Control (MAC) proto-col for the High Speed Downlink Packet Access (HSDPA) of the Wideband CDMA (WCDMA) radio transmission is studied. In a packet radio network, the delay performance is of special interest. HSDPA is a new concept, which en-hances downlink performance of the WCDMA air inter-face to lower packet delay...

This paper represents a WCDMA performance evaluation based on a detailed simulation model. The emphasis is mainly to study the effects on the perfomance results, when computation in the WCDMA simulator applies frame resolution, compared to slot resolution. The performance behaviour is analysed both in the uplink and in the downlink by distributions...