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EP-4740698-A1 - A THERMAL EFFICIENT AND WEIGHT OPTIMIZED OUTDOOR SMALL CELL

EP4740698A1EP 4740698 A1EP4740698 A1EP 4740698A1EP-4740698-A1

Abstract

The present disclosure relates to methods and systems for enabling a thermal efficient and weight optimized outdoor small cell (ODSC) design of an ODSC The thermal efficient and weight optimized ODSC [100] comprises an integrated baseband and transceiver board (IBTB [102]), a radio frequency (RF) front end board (RFEB [104]), a cavity filter [106], a multiple-input multiple-output (MIMO) antenna [108], a clock and synchronization circuit [110], and a heat pipe based mechanical housing [112], wherein the heat pipe based mechanical housing comprises a set of heat pipes [112a] integrated into a finned heat sink [114] to distribute a localized heat of a network processor [102a] and a field-programmable gate array/application-specific integrated circuit (FPGA/ASIC) [102f] of the IBTB [102], across the finned heat sink [114].

Inventors

  • GUPTA, DEEPAK
  • BHATNAGAR, PRADEEP KUMAR
  • BHATNAGAR, AAYUSH
  • SINGH, BAJINDER PAL
  • RAMAN, Rishab
  • MITTAL, SHIVAM
  • Bansal, Amrish

Assignees

  • Jio Platforms Limited

Dates

Publication Date
20260513
Application Date
20240611

Claims (8)

  1. 1. A thermal efficient and weight optimized outdoor small cell (ODSC) [100], the thermal efficient and weight optimized ODSC [100] comprising: an integrated baseband and transceiver board (I BTB) [102]; a radio frequency (RF) front end board (RFE B) [104]; a cavity filter [106]; a multiple-input multiple-output (MIMO) antenna [108]; a clock and synchronization circuit [110]; and a heat pipe based mechanical housing [112], wherein the heat pipe based mechanical housing [112] comprises: a set of heat pipes [112a] integrated into a finned heat sink [114] to distribute a localized heat of a network processor [102a] and a field-programmable gate array/application- specific integrated circuit (FPGA/ASIC) [102f] of the IBTB [102], across the finned heat sink [114],
  2. 2. The thermal efficient and weight optimized ODSC [100] as claimed in claim 1, wherein the IBTB [102] is blind mated to the RFEB [104], and the IBTB [102] comprises at least: the network processor [102a] connected to a backhaul , a baseband and transceiver module [102c], one or more control units [102d] comprising at least one of a L2 control unit, a L3 control unit and a system control unit, and one or more controller circuits [102e].
  3. 3. The thermal efficient and weight optimized ODSC [100] as claimed in claim 1, wherein the RFEB [104] comprises at least: a plurality of RF chains [104a], a driver amplifier [104b], a digital step attenuator [104c], a power amplifier (PA) [104d], one or more low noise amplifiers (LNAs) [104e], and a circulator and time division duplex (TDD) switch [104f].
  4. 4. The thermal efficient and weight optimized ODSC [100] as claimed in claim 1, wherein the clock and synchronization circuit [110] is configured to synchronize the IBTB [102] with one or more units connected to the thermal efficient and weight optimized ODSC [100] and wherein the clock and synchronization circuit [110] at least comprises one or more ultra-low noise clock generation phase-locked loops (PLLs) [110a], a programmable oscillator [110b] and a system synchronizer [110c],
  5. 5. The thermal efficient and weight optimized ODSC [100] as claimed in claim 1, wherein the cavity filter [106] comprises a 4-port cavity filter for a four-transmitter-four-receiver (4T4R) configuration providing a steeper roll-off outside an operating band.
  6. 6. The thermal efficient and weight optimized ODSC [100] as claimed in claim 5, wherein the MIMO antenna [108] comprises a 4-port cross-polarized patch antenna for the 4T4R configuration.
  7. 7. The thermal efficient and weight optimized ODSC [100] as claimed in claim 1, wherein the finned heat sink [114] comprises a set of vertical fins.
  8. 8. The thermal efficient and weight optimized ODSC [100] as claimed in claim 7, wherein a thickness of each vertical fin from the set of vertical fins is lesser than a pre-defined thickness, and a height of each vertical fin from the set of vertical fins is lesser than a pre-defined height.

Description

A THERMAL EFFICIENT AND WEIGHT OPTIMIZED OUTDOOR SMALL CELL FIELD OF THE DISCLOSURE [0001] The present disclosure relates generally to the field of wireless communication systems. More particularly, the present disclosure relates to methods and systems for enabling a thermal efficient and weight optimized outdoor small cell (ODSC). BACKGROUND [0002] The following description of related art is intended to provide background information pertaining to the field of the disclosure. This section may include certain aspects of the art that may be related to various features of the present disclosure. However, it should be appreciated that this section be used only to enhance the understanding of the reader with respect to the present disclosure, and not as admissions of prior art. [0003] Wireless communication technology has rapidly evolved over the past few decades, with each generation bringing significant improvements and advancements. The first generation of wireless communication technology was based on analog technology and offered only voice services. However, with the advent of the second-generation (2G) technology, digital communication and data services became possible, and text messaging was introduced. 3G technology marked the introduction of highspeed internet access, mobile video calling, and location-based services. The fourth-generation (4G) technology revolutionized wireless communication with faster data speeds, better network coverage, and improved security. Currently, the fifth-generation (5G) technology is being deployed, promising even faster data speeds, low latency, and the ability to connect multiple devices simultaneously. With each generation, wireless communication technology has become more advanced, sophisticated, and capable of delivering more services to its users. [0004] Moreover, the 5G networks are generally based on small cell technology. Small cells use low- power and short-range wireless transmission systems (or base stations). A small geographical area or small-proximity indoor and outdoor space is covered by the small cells in the 5G networks. Also, 5G new radio (NR) outdoor small cell (ODSC) is a medium power gNB (i.e., gNodeB or Next Generation Node B) which operates in micro class (typically 6.25 W or 38dBm per antenna port). It complements macro-level wide-area solutions for coverage and capacity and is particularly useful in hot zone/hot spot areas with high traffic and quality of service (QoS) demands. Thus, making it a power efficient solution. It offers two lGbps (gigabits per second) Fiber Optic Connections (e.g., small form-factor pluggable (SFP) connections) as a backhaul connection to networks. [0005] While a Macro gNB can offer satisfactory coverage and capacity in many situations, dense urban environments with tall buildings may experience intermittent mobile coverage issues. Simply adding more radios becomes impractical. Similarly, meeting the high capacity demands of numerous mobile users in commercial hubs such as malls, hotels, office blocks, and transportation hubs poses significant challenges. In such scenarios, deploying 5G Outdoor small cell (ODSC) solutions in hotspot locations becomes essential to enhance coverage and capacity, complementing the capabilities of 4G/5G gNB. This efficiently addresses the increased traffic demands in these areas. [0006] As the ODSCs play an important role in the 5G networks there is a requirement to optimize the thermal efficiency and weight of these ODSCs. Therefore, there is a need in the art to provide a system and a method that can enable a thermal efficient and weight optimized outdoor small cell design to provide a thermal efficient and weight optimised ODSC, for instance a thermal efficient and weight optimized Sub-6GHz 5G new radio (NR) four-transmitter-four-receiver Outdoor Small Cell (4T4R ODSC). OBJECTS OF THE DISCLOSURE [0007] Some of the objects of the present disclosure, which at least one embodiment disclosed herein satisfies are listed herein below. [0008] It is an object of the present disclosure to provide an efficient and effective system and method that can enable a thermal efficient and weight optimized outdoor small cell design to provide a thermal efficient and weight optimized ODSC. [0009] It is another object of the present disclosure to provide a solution that can provide an overall integrated ODSC system having network (NW) processor and field-programmable gate array / applicationspecific integrated circuits (FPGA/ASIC) for Baseband Transceiver. All these are integrated on 18 or more layers Integrated baseband and Transceiver board (IBTB). [00010] It is another object of the present disclosure to provide a solution that can provide clock synchronization architecture in the ODSC using system synchronizer Integrated Circuit (IC) based on Global Positioning System (GPS)/ Precision Time Protocol (PTP)/Holdover and clock generators. [00011] It is another object of the present disclosure to provi