1,720,998 research outputs found
Method for managing data transmission power in mobile cellular networks
No full textA method manages sub-frame data transmission in a cellular network including a macro node and at least one small node associated therewith. The method includes at a macro node side: based on channel quality information from user equipment associated with the macro node, grouping the user equipment into a first group that can be served at a macro node first transmission power and a second group that has to be served at a macro node second transmission power higher than the macro node first transmission power, and determining a sub-frames pattern including: a number of no-transmission sub-frames wherein data transmission is prevented at the macro node side, a number of limited-transmission sub-frames wherein data transmission is allowed at the macro node side at only the first transmission power, and a number of normal-transmission sub frames wherein data transmission is allowed at the macro node side at the second transmission power
Method and System for data tunneling in device to device communications assisted by a telecommunication network
No full textA method for managing data packets transmitted by a first user equipment to be received by a second user equipment through a radio network includes having the radio network comprising a radio transceiver station receive data packets transmitted by the first user equipment. For each data packet received, checking whether the data packet comprises a request for a data packet tunneling. For each data packet comprising a request for data packet tunneling, providing the data packet to a relay protocol entity at a Radio Link Control protocol layer. The relay protocol entity is configured for generating at least one tunneling data packet, said generating at least one tunneling data packet comprises inserting at least a portion of the transmitted data packet into the at least one tunneling data packet and transmitting the tunneling data packet to the second user equipment
METHOD AND SYSTEM FOR LOSS MITIGATION DURING DEVICE TO DEVICE COMMUNICATION MODE SWITCHING
No full textA method for managing data packets (IP PDUtx, PDCP PDUtx, RLC PDUtx, MAC PDUtx) transmitted by a first user equipment (105tx) to be received by a second user equipment (105rx) is proposed. The first user equipment (105tx) is arranged for communicating with the second user equipment (105rx) in a direct mode by directly connecting to the second user equipment (105rx) or in an infrastructure mode by connecting to the second user equipment (105rx) through a radio transceiver station (110) of a radio network. The first user equipment (105tx) is configured for generating data packets (IP PDUtx) at an Internet Protocol layer (205) of the protocol stack to be transmitted; forwarding each data packet (IP PDUtx) to a lower protocol layer (210) of the protocol stack in order to be sent to the second user equipment in direct mode or in infrastructure mode, providing at least one buffer protocol entity (405) below the Internet Protocol layer (205). The at least one buffer protocol entity (405) is arranged for storing a copy of each data packet (IP PDUtx) forwarded from the Internet Protocol layer (205) to the lower protocol layer; removing the copy of a data packet (IP PDUtx) stored in the buffer protocol entity (405) upon acknowledge of the receipt of the corresponding data packet at the second user equipment, and in case the first user equipment switches from communicating with the second user equipment (105rx) in the direct mode to the infrastructure mode or, vice versa, from the infrastructure mode to the direct mode, forwarding the copy of each data packet (IP PDUtx) comprised in the buffer protocol entity (405) to the lower protocol layer of the protocol stack in order to be sent to the second user equipment in infrastructure mode or in direct mode, respectively
METHOD AND SYSTEM FOR DATA TUNNELING IN DEVICE TO DEVICE COMMUNICATION ASSISTED BY A TELECOMMUNICATION NETWORK
No full textA method for managing data packets (MAC PDUtx, RLC PDUtx) transmitted by a first user equipment (105tx) to be received by a second user equipment (105rx) through a radio network is proposed. The method comprising having the radio network comprising a radio transceiver station (110) configured for receiving data packets (MAC PDUtx; RLC PDUtx) transmitted by the first user equipment. For each data packet received, checking whether the data packet comprises a request for a data packet tunneling (TUN, LCID). For each data packet comprising a request for data packet tunneling, providing the data packet to a relay protocol entity (305) at a Radio Link Control protocol layer (215). The relay protocol entity is configured for generating at least one tunneling data packet (RLC PDUeNB; AM PDU), said generating at least one tunneling data packet comprises inserting at least a portion (625) of the transmitted data packet into the at least one tunneling data packet and transmitting the tunneling data packet to the second user equipment
Messages Broadcasting Exploiting Device to Device Transmission
No full textA method of broadcasting a message (m) among user equipment (UE0-8) in a broadcast area (115; 515) covered by a wireless communication network (100) is proposed. The wireless communication network comprises at least one radio base station (105; 420, 425; 505A-E) which is adapted to manage communications of user equipment in one or more respective served areas (110; 405, 410; 501A-E). The method comprises having the at least one radio base station identifying (210) user equipment comprised in the broadcast area; among the user equipment within the broadcast area, estimating (215) a set of transmitter user storing the message to be broadcasted; among the user equipment within the broadcast area, estimating (220) a set of receiver user equipment not storing the message and being able to receive the message sent by at least one transmitter user equipment through a device to device communication, and selecting (225) a subset of transmitter user equipment for transmitting the message ensuring that the receiver user equipment in said set receive the message with a predetermined confidence
The Power of Data: How Traffic Demand and Data Analytics Are Driving Network Evolution toward 6G Systems
No full textThe evolution of communication systems always follows data traffic evolution and further influences innovations that are unlocking new markets and services. While 5G deployment is still ongoing in various countries, data-driven considerations (extracted from forecasts at the macroscopic level, detailed analysis of live network traffic patterns, and specific measures from terminals) can conveniently feed insights suitable for many purposes (B2B e.g., operator planning and network management; plus also B2C e.g., smarter applications and AI-aided services) in the view of future 6G systems. Moreover, technology trends from standards and research projects (such as Hexa-X) are moving with industry efforts on this evolution. This paper shows the importance of data-driven insights, by first exploring network evolution across the years from a data point of view, and then by using global traffic forecasts complemented by data traffic extractions from a live 5G operator network (statistical network counters and measures from terminals) to draw some considerations on the possible evolution toward 6G. It finally presents a concrete case study showing how data collected from the live network can be exploited to help the design of AI operations and feed QoS predictions
A practical framework for energy-efficient node activation in heterogeneous LTE networks
Full text linkThis paper presents a framework to activate and deactivate micro nodes in a heterogeneous multi-cell LTE network,
based on load and energy efficiency consideration. The framework exploits historical data (i.e., per-macro-cell load curves) to select a set of candidate switch-on/switch-off instants of micro cells, assuming a limited number of state changes is allowed in a day. The switching instants are instead determined online, by taking into account the actual traffic as well as the load curves. Moreover, intercell interference is fully accounted for. Our simulations show that this framework allows a multi-cell network to sustain peak-hour load when necessary, and to reconfigure to a minimum coverage baseline whenever feasible, thus saving power (up to 25% in our scenarios). Moreover, the framework is robust, meaning that deviations of the actual traffic with respect to the prediction offered by the load curves can easily be handled
Resource allocation system and method adapted to implement device-to-device communications in wireless communication networks
No full textA method for allocating communication resources for communications performed by user equipment in a mobile communication network comprises receiving a first indication about an amount of available communication resources and obtaining information about interfering communications between user equipment. The method further comprises, for each communication between user equipment to which communication resources have to be allocated, receiving a second indication about an available communication rate for an infrastructure-based communication and for a device-to-device communication, receiving a third indication about a requested communication rate for said each communication, making a selection between an infrastructure-based communication type or a device-to-device communication type based on the first, second and third indications and the information about interfering communications, and allocating communication resources to each communication on the basis of the selection between an infrastructure-based communication type or a device-to-device communication type
Performance Analysis of OpenAirInterface System Emulation
Full text linkWith the rapid growth of mobile networks, the radio access network becomes more and more costly to deploy, operate, maintain and upgrade. The most effective answer to this problem lies in the centralization and virtualization of the eNodeBs. This solution is known as Cloud RAN and is one of the key topics in the development of fifth generation networks. Within this context OpenAirInterface is a promising emulation tool that can be used for prototyping innovative scheduling algorithms, making the most of the new architecture. In this work we first describe the emulation environment of OpenAirInterface and its scheduling framework and we use it to implement two MAC schedulers. Moreover we validate the above schedulers and we perform a thorough profiling of OpenAirInterface, in terms of both memory occupancy and execution time. Our results show that OpenAirInterface can be effectively used for prototyping scheduling algorithms in emulated LTE networks
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