Managing a Radio Transmission Between a Base Station and a User Equipment
a radio transmission and user equipment technology, applied in the field of cellular networks, can solve the problems of significant performance penalties, and achieve the effects of improving the received signal to interference plus noise ratio (sinr), maximizing sinr, and improving si nr
Inactive Publication Date: 2015-01-29
NOKIA SOLUTIONS & NETWORKS OY
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Benefits of technology
The patent text describes a method for improving wireless performance using a technique called MIMO. This method involves using multiple antennas at both the transmitting and receiving ends to create multiple paths between the antennas. The cumulative power of these multiple reflections can be used to significantly improve wireless performance. The patent also introduces a new X2 signalling between base stations to allow them to inform each other about which resources they plan to use for scheduling users. This helps to maximize the use of available resources and improve signal-to-noise ratio. Additionally, the patent describes a method for combining signals from multiple receiving antennas to improve signal-to-interference plus noise ratio. Overall, the patent presents a technical solution for improving wireless performance through MIMO and efficient resource allocation.
Problems solved by technology
Therefore, its performance may be significantly penalized when high rank transmissions are applied at interfering eNBs.
Method used
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Embodiment Construction
[0058]In the following, embodiments of the herein disclosed subject matter are illustrated with reference to the drawings and reference to aspects of current standards, such as LTE. However, such reference to current standards is only exemplary and should not be considered as limiting the scope of the claims.
[0059]FIG. 1 shows a cellular network system 100. A user equipment 102 within the cellular network system is served by a base station 101. The base station or eNB 101 and the user equipment or UE 102 communicate via a communication channel 103.
[0060]The communication channel comprises a plurality of channel resources, in time and / or frequency domain. For a radio transmission between the base station and the UE, a multiple input multiple output (MIMO) transmission scheme may be applied.
[0061]The plurality of channel resources is divided into a set of different channel resource regions. A MIMO rank is assigned, by the base station, to each channel resource region, wherein the MIMO...
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It is described a method for managing a radio transmission between a base station and a user equipment, wherein a communication channel is used for the radio transmission, wherein the communication channel includes a plurality of channel resources and is based on a MIMO transmission scheme. The method includes dividing the plurality of channel resources into a set of channel resource regions, assigning a MIMO rank to each channel resource region, wherein the MIMO rank is indicative for a number of channel resources to be used for a radio transmission within a corresponding channel resource region, selecting a channel resource region for the radio transmission between the base station and the user equipment, and managing the radio transmission between the base station and the user equipment based on the selected channel resource region and the corresponding assigned MIMO rank.
Description
FIELD OF INVENTION[0001]The present invention relates to the field of cellular networks and in particular to cellular networks using multiple input multiple output (MIMO) transmission.ART BACKGROUND[0002]In cellular network systems, multiple-input and multiple-output, or MIMO may be used for improving the communication performance by using multiple antennas at both the transmitter and receiver. MIMO rank adaptation may be employed at the transmitter side as part of the link adaptation process to make best use of the multiple transmit antennas. If the user equipment (UE) channel quality is good, multiple data streams could be sent to the UE using high rank transmission. If the channel is poor, a low transmission rank may exploit the MIMO diversity gain to improve the received signal to interference plus noise ratio (SINR). At the receiver side, the SINR can be improved by combining the signals from multiple receiving antennas. An IRC (interference rejection combining) receiver may ex...
Claims
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IPC IPC(8): H04W72/08H04B7/04
CPCH04B7/0413H04W72/085H04B7/0486H04B7/063H04W72/27H04W72/542
Inventor WANG, YUANYEPEDERSEN, KLAUS INGEMANN
Owner NOKIA SOLUTIONS & NETWORKS OY
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