Clearwire IP Holdings L.l.c.

Sprint Spectrum L.p.

Sprint Communications Comapny L.p.

Sungki Park

Saied Kazeminejad

Masoud Olfat

Brent A Scott

Durga P Satapathy

Dhaval Dipak Mehta

Brett Lee Christian

Senthil Veeraragavan

Walter Fred Rausch

Chunmei Liu

Jasinder P Singh

Rajveen Narendran

Young Zhao

Disclosed is a method and system for sharing a remote radio head (RRH) between multiple cell sites. An RRH is be coupled with at least two separately located cell sites, so as to interface concurrently between one such cell site and a baseband unit and between the other such cell site and the baseband unit. Further, a baseband unit may thus also serve the multiple cell sites, by being coupled with the RRH that serves the multiple cell sites.

Method and system for sharing remote radio head between cell sites

A computer-implemented method, system, and computer-readable storage media for mitigating interference in a communication system is described. A user equipment operating near an edge of its base station coverage cell may transmit a strong uplink signal, which can interfere with a nearby base station. When a serving base station recognizes a high downlink signal from a nearby base station, an interference mitigation algorithm is enabled by the serving base station. The interference mitigation algorithm of the serving base station will control the uplink signal from the user equipment, so the user equipment does not interfere with the nearby base station.

Uplink interference mitigation

In systems and methods of communicating with a wireless device, base band unit data is received at a base band unit from a communication network for the wireless device, and a control signal associated with the data is also received, the control signal comprising a frequency band identifier. A scheduling module is selected from among a plurality of scheduling modules based on the frequency band identifier, and transmission of the data is scheduled to the wireless using the selected scheduling module.

Unified scheduler for wireless communication

Systems and methods are described for performing beam forming at multiple access nodes. A first access node may receive a signal level from a wireless device that fails to meet a signal level criteria. It may be determined that beam forming is enabled at the first access node. Beam forming data may then be communicated between the first access node and a second access node. It may also be determined whether coordinated multipoint transmissions are enabled at the first access node. Beams transmitted from the first access node and the second access node may be adjusted based on whether coordinated multipoint transmissions are enabled from the first access node.

Systems and methods for performing beam forming at multiple access nodes

A first wireless device is served with an access node. The access node has a first coverage area. A second wireless device is served with a sub-cell access node. The sub-cell access node has a second coverage area that is contained within the access node coverage area. Based on the determination to reduce the load on the sub-cell access node, a handover of a wireless device from the sub-cell access node to the access node is caused by reducing the transmit power used by the sub-cell access node. Based on a comparison of a first signal quality indicator associated with a first sub-cell access node to a second signal quality indicator associated with a second sub-cell access node, a transmit power from the first access node is reduced.

Sub-cell power adjustment

A base station could establish maximum transmit power that the WCD should apply per carrier when serving the WCD on multiple carriers, with the base station considering the WCD's total power headroom and a delta of the WCD's uplink receive power per carrier. For instance, the base station could determine the WCD's total power headroom and could determine a receive power delta per carrier, the base station could effectively re-distribute the WCD's total power headroom among the carriers as adjustments to the maximum transmit power per carrier in accordance with a relative comparison of the receive power deltas on the carriers, the base station could further shift the adjustments to keep the sum of the WCD's maximum transmit power of the carriers in line with the WCD's maximum total transmit power, and the base station could direct the WCD to apply the shifted adjusted maximum transmit values.

Controlling per-carrier maximum transmit power of a device served on a plurality of carriers

An indication is received from a wireless device in communication with a first communication system using a first radio access technology that the wireless device has detected a second communication system using a second access technology. Network information of the first communication system is provided and stored at the wireless device when performing a first handover of the wireless device from the first communication system to the second communication system. The network information is provided to the first communication system to perform a second handover from the second communication system to the first communication system.

Wireless device communication

Embodiments disclosed herein provide systems and methods for providing in-band backhaul from a wireless macrocell. In a particular embodiment, a method is provided for operating a wireless communication system allocated a plurality of frequency resource segments. The method provides receiving communications for wireless transfer from the wireless communication system using a first antenna system and a second antenna system, wherein a gain of the first antenna system is higher than a gain of the second antenna system. The method further provides determining a first subset of the communications that should be transferred over the first antenna system and transferring the first subset of the communications from the first antenna system using a first portion of the frequency resource segments. The method further provides transferring the remaining communications from the second antenna system using frequency resource segments other than the first portion of the frequency resource segments.

In-band backhaul from a wireless macrocell

A switching device and a method and medium for using the switching device are provided. The switching device is associated with a remote radio unit (RRU) and an antenna of a base station and comprises a plurality of switching cables arranged in predetermined configurations including a single-layer beam forming configuration, a dual-layer beam forming configuration, and a MIMO configuration. In response to inputs received from UEs served by the base station, the switching device can implement the configuration best-suited to target the UEs.

Configurable antenna port selection for beam forming and MIMO in a telecommunications network

When a base station is serving a UE on a first RF carrier, the base station encounters a trigger to add to the UE's air interface connection a second RF carrier. The base station then decides based at least in part on a measure of RF performance of communication between the base station and the UE on the first RF carrier, whether the second RF carrier that the base station will add to the UE's air interface connection should be a TDD carrier or rather an FDD carrier. And the base station then reconfigures the UE's air interface connection to add a second RF carrier in accordance with the decision. The base station then serves the UE concurrently on the first RF carrier and the second RF carrier.

Method and system for selecting duplex mode of second RF carrier based on performance on first RF carrier

In systems and methods of transmitting a data packet to a wireless device over a wireless communication link, a signal level is received of a wireless communication link between a wireless device and an access node. A data packet is divided into a first segment and a second segment according to the received signal level, and the first segment and the second segment are transmitted to the wireless device over the wireless communication link according to the signal level.

Transmitting a data packet over a wireless communication link

User Equipment (UE) selects a Sounding Reference Signal (SRS) pattern and transmits orthogonal frequency-division multiplexing (OFDM) symbols according to the selected SRS pattern. The OFDM communication system wirelessly receives data from the UE and processes the data to detect the OFDM symbols. The detected OFDM symbols are processed to identify the selected SRS pattern. An impulse response matrix is generated based on the selected SRS pattern. Additional data based on the impulse response matrix can be transferred to the UE.

User equipment SRS selection with network node intelligence for beamforming performance improvement

A system and method for adaptive control of an averaging parameter in a communications network may include an averaging parameter adaptive control module (APAC) that is associated with a base station and that includes one or more processors configured to generate a first averaging parameter that is transmitted by the base station to a mobile station communicating with the base station. The mobile station may use the first averaging parameter to generate first channel condition information that indicates a condition of a communication channel. First feedback information including the first channel condition information may be received at the base station. The APAC may generate a second averaging parameter using the first averaging parameter and the first feedback information and may transmit the second averaging parameter from the base station to the mobile station, thereby adaptively controlling the second averaging parameter based on the first feedback information.

System and method for adaptive control of an averaging parameter for PCINR and RSSI

A first indicator of a first distance between an access node and a first sub-cell access node is determined. The first sub-cell access node is located in a coverage area of the access node. Based on the first indicator of the first distance, a first allocation of air-interface resource blocks to be used by both the access node and the first sub-cell access node is selected.

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Ashburn, VA, United States of America

Sungki Park