Showing posts with label Rural Communications. Show all posts
Showing posts with label Rural Communications. Show all posts

Monday, June 7, 2021

TSDSI's Low Mobility Large Cell (LMLC) Requirements in 5G


Back in November 2020, ITU completed the evaluation for global affirmation of IMT-2020 technologies. Three new technologies were successfully evaluated by ITU and were found to conform with the International Mobile Telecommunications 2020 (IMT-2020) vision and stringent performance requirements. The technologies are: 3GPP 5G-SRIT and 3GPP 5G-RIT submitted by the Third Generation Partnership Project (3GPP), and 5Gi submitted by Telecommunications Standards Development Society India (TSDSI). 

I have explained in earlier videos that 5G-SRIT  and 5G-RIT corresponds to Non-Standalone and Standalone respectively. 5Gi on the other hand is an updated version of 5G-RIT designed mainly to improve rural coverage. 

TSDSI announced this as follows:

TSDSI’s 5G Radio Interface Technology named as “5Gi” has cleared the rigorous processes of  International Telecommunication Union (ITU) and has been approved by the SG5 of ITU as a part of Draft Recommendation M.[IMT-2020.SPECS] in its meeting held on 23rd November 2020.

5Gi, the first  ever Mobile Radio Interface Technology contribution from India to become part of ITU-R’s  IMT recommendation, went through a rigorous evaluation process of the ITU-R working groups over the past 3 years before getting the approval.

This standard is a major breakthrough for bridging the rural-urban digital divide in 5G deployment due to enhanced coverage. It enables connecting majority of India’s villages through towers located at gram panchayats in a cost effective manner. It has found support from several countries as it addresses their regional needs from a 5G standpoint.

The standard will now be circulated by ITU to member states for adoption and approval. Specifications are expected to be published by ITU in early February 2021.

TSDSI thanks its members, the Department of Telecommunications, Govt. of India and its partners for their support over the last four years in helping get this standard reach the final stage in ITU.

In a keynote address presented to the 2020 IEEE 5G World Forum plenary session, Radha Krishna Ganti from TSDSI discusses rural connectivity challenges in India, Low Mobility Large Cell requirements, benefits of implementing LMLC for rural coverage, and internet ecosystem updates. His talk is embedded as follows:

TSDSI explains their 5Gi technology as follows:

TSDSI standard fulfils the requirements of affordable connectivity in rural, remote and sparsely populated areas. Enhanced cell coverage enabled by this standard, will be of great value in countries and regions that rely heavily on mobile technologies for connectivity but cannot afford dense deployment of base stations due to lack of deep fibre penetration,  poor economics and challenges of geographical terrain. The International Telecommunication Union (ITU), a UN body that is setting requirements for IMT 2020 (aka 5G), had earlier adopted the Low-Mobility-Large-Cell (LMLC) use case proposed by TSDSI as a mandatory 5G requirement in 2017. This test case addresses the problem of rural coverage by mandating large cell sizes in a rural terrain and scattered areas in developing as well as developed countries. Several countries supported this as they saw a similar need in their jurisdictions as well. TSDSI successfully introduced an indigenously developed 5G candidate Radio Interface Technology, compatible with 3GPP Technology, at the International Telecommunications Union (ITU) in 2019 for IMT 2020 ratification. The RIT incorporates India-specific technology enhancements that can enable larger coverage for meeting the LMLC requirements. It exploits a new transmit waveform that increases cell range developed by research institutions in India (IIT Hyderabad, CEWiT and IIT Madras) and supported by several Indian companies. It enables low-cost rural coverage and has additional features which enable higher spectrum efficiency and improved latency.

While technically this sounds interesting and as discussed in the talk, would make sense due to a large market like India, there are other solutions that are already possible that probably may make this redundant.

As someone who worked with the rural communities to bring coverage in hard to reach areas, small cells and In-band backhaul was one such solution to improve coverage in not-spot areas. Examples of that here and here. Relays are other option that don't cost much but can bring coverage quickly, at a much lower price.

Typically, in practice, the cells easily reach 10km radius. In theory this distance can be as much as 100km. Last year, Australian operator Telstra and vendor Ericsson announced that they have successfully managed to increase the range of an LTE cell from 100 km to 200 km. So, we can already have large cells with existing 4G/5G cells. 

Facebook connectivity is working on SuperCell concept, a Wide-Area Coverage Solution for Increasing Mobile Connectivity in Rural Communities. Details here. NGMN published a paper on Extreme Long Range Communications for Deep Rural Coverage. Details here.

Finally, we also have 5G Integrated Access and Backhaul (IAB) that can be used for backhauling and solving backhaul issues. They will end up playing a role in rural areas as well as dense urban areas eventually.

Let me know what you think.

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Tuesday, November 6, 2018

Telefonica, Mayutel, Facebook & Parallel Wireless: Connecting the Unconnected in Peru (#InternetParaTodos)


Back in summer I wrote about how Telefonica and Parallel Wireless(*) are on a mission to connect 100 Million Unconnected and then followed it by a blog post with information from Patrick Lopez, VP Networks Innovation @ Telefonica about how Telefonica is using Big Data, Machine Learning (ML) and Artificial Intelligence (AI) to Connect the Unconnected.

In the Facebook TIP Summit last month, Roger Greene, Rural Access Lead, Connectivity Ecosystem Programs, Facebook talked to Juan Campillo, Internet Para Todos Lead, Telefónica & Omar Tupayachi, Founder & CEO, Mayutel about how they are connecting the unconnected. The discussion embedded below, starts with a very nice video about how connectivity is making a difference in Peru. In fact that video inspired me to do this post 😊.

Mayutel was described as Peru's first rural operator. It was founded in 2015 and works in over 150 areas. It has 25 employees.

During the discussion some interesting points were discussed like planning, the reason its important is that if you dont do proper planning and analytics, you can use small cells instead of macros and vice versa. Also, some solutions are worth trying in the field as its only when deployed, it can be tested in real-world scenarios.

Connectivity is very important for the rural people in Peru, like every other country. Approximately 4 million Peruvians have only got access to 2G technology. It would help if they have access to have 3G & 4G too. It not only helps connect the people on the move to their loved ones back home, it also helps small businesses who reply on messaging group communications to solve their issues and ask for help & advice.
Due to the Open RAN approach, the cost of deployment has reduced by 50-70%. Mayutel mentioned that they were able to deploy a site at 1/10th the cost it would normally take. This was all thanks to the open approach where their engineers can learn how to deploy the complete solution. It was vital to use local help not only in terms of knowledge but also in terms of manpower.

There were some good lessons and learning but in the end for this to scale more operators need to become part of the Telecom Infra Project and make this successfully happen.




Here is another video from Parallel Wireless on their deployments in Peru.




All videos from TIP Summit 2018 are available here.

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*Full Disclosure: I work for Parallel Wireless as a Senior Director in Strategic Marketing. This blog is maintained in my personal capacity and expresses my own views, not the views of my employer or anyone else. Anyone who knows me well would know this.

Monday, August 13, 2018

Telefonica: Big Data, Machine Learning (ML) and Artificial Intelligence (AI) to Connect the Unconnected


Earlier, I wrote a detailed post on how Telefonica was on a mission to connect 100 Million Unconnected with their 'Internet para todos' initiative. This video below is a good advert of what Telefinica is trying to achieve in Latin America


I recently came across a LinkedIn post on how Telefónica uses AI / ML to connect the unconnected by Patrick Lopez, VP Networks Innovation @ Telefonica. It was no brainer that this needs to be shared.



In his post, Patrick mentions the following:

To deliver internet in these environments in a sustainable manner, it is necessary to increase efficiency through systematic cost reduction, investment optimization and targeted deployments.

Systematic optimization necessitates continuous measurement of the financial, operational, technological and organizational data sets.

1. Finding the unconnected


The first challenge the team had to tackle was to understand how many unconnected there are and where. The data set was scarce and incomplete, census was old and population had much mobility. In this case, the team used high definition satellite imagery at the scale of the country and used neural network models, coupled with census data as training. Implementing visual machine learning algorithms, the model literally counted each house and each settlement at the scale of the country. The model was then enriched with crossed reference coverage data from regulatory source, as well as Telefonica proprietary data set consisting of geolocalized data sessions and deployment maps. The result is a model with a visual representation, providing a map of the population dispersion, with superimposed coverage polygons, allowing to count and localize the unconnected populations with good accuracy (95% of the population with less than 3% false positive and less than 240 meters deviation in the location of antennas).


2. Optimizing transport



Transport networks are the most expensive part of deploying connectivity to remote areas. Optimizing transport route has a huge impact on the sustainability of a network. This is why the team selected this task as the next challenge to tackle.

The team started with adding road and infrastructure data to the model form public sources, and used graph generation to cluster population settlements. Graph analysis (shortest path, Steiner tree) yielded population density-optimized transport routes.


3. AI to optimize network operations


To connect very remote zones, optimizing operations and minimizing maintenance and upgrade is key to a sustainable operational model. This line of work is probably the most ambitious for the team. When it can take 3 hours by plane and 4 days by boat to reach some locations, being able to make sure you can detect, or better, predict if / when you need to perform maintenance on your infrastructure. Equally important is how your devise your routes so that you are as efficient as possible. In this case, the team built a neural network trained with historical failure analysis and fed with network metrics to provide a model capable of supervising the network health in an automated manner, with prediction of possible failure and optimized maintenance route.

I think that the type of data driven approach to complex problem solving demonstrated in this project is the key to network operators' sustainability in the future. It is not only a rural problem, it is necessary to increase efficiency and optimize deployment and operations to keep decreasing the costs.


Finally, its worth mentioning again that I am helping CW (Cambridge Wireless) organise their annual CW TEC conference on the topic 'The inevitable automation of Next Generation Networks'. There are some good speakers and we will have similar topics covered from different angles, using some other interesting approaches. The fees are very reasonable so please join if you can.

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Friday, June 1, 2018

An Alternative 5G for Rural Communities


I recently presented my personal vision of an alternative 5G for rural communities on behalf of Parallel Wireless at the IEEE 5G Summit in Glasgow. I believe that the next few years are going to be crucial for MNOs to decide if they want to cover the rural areas or just continue to focus on built-up areas.

In some cases it may not really be worthwhile for example for a smaller operator to build a cellular IoT network as the returns may not be worth the effort and investment.

I should mention that the caveat is that a lot of alternative 5G approach in my presentation depends on at least one of the satellite megaconstellations being successfully deployed and being fully operational. I am assuming a sensible pricing would be in place anyway as the satellite operators cant keep charging whatever they want for ever.

So here is my alternative 5G vision


Slides (and pictures) are available here for anyone interested. For my slides, jump to page 244. Quite a few other good presentations on 5G too.

An article in EE times summarises this IEEE 5G conference quite well. Available here.



Let me know your thoughts.

Thursday, August 10, 2017

Mobile can help with United Nations SDGs, only if prices go down

I came across this interesting article in WSJ, courtesy of the Benedict Evans newsletter, which discusses how Indians are using their smartphones even more and consuming far more data than they previously did. Due to low incomes, spending money on mobile top-up is to the detriment of other sectors. To quote the article:
“There was a time when kids would come here and blow their pocket money on chips and chocolate,” said Anup Kapoor, who runs a mom-and-pop grocery shop in New Delhi. These days, “they spend every last rupee on a data recharge instead.”

United Nations have created 17 very ambitious Sustainable Development Goals (SDGs) that universally apply to all, countries will mobilize efforts to end all forms of poverty, fight inequalities and tackle climate change, while ensuring that no one is left behind.
The SDGs, also known as Global Goals, build on the success of the Millennium Development Goals (MDGs) and aim to go further to end all forms of poverty. The new Goals are unique in that they call for action by all countries, poor, rich and middle-income to promote prosperity while protecting the planet. They recognize that ending poverty must go hand-in-hand with strategies that build economic growth and addresses a range of social needs including education, health, social protection, and job opportunities, while tackling climate change and environmental protection.
I have talked about Rural connectivity on this blog and a lot more on small cells blog. In fact the heart touching end user story from Rural England was shared multiple times on different platforms. GSMA has done a good amount of work with the rural communities with their mobile for development team and have some interesting videos showing positive impacts of bringing connectivity to rural communities in Tanzania (see here and here).

While you will always hear about the challenges in bringing connectivity to these rural communities, all technological challenges can be solved. There are many highly ambitious projects using balloons, drones, creating droneways, Helikites, Satellite backhaul, drone based backhaul, mmWave backhaul, etc. The real problem to solve here are the costs (spectrum, infrastructure, etc.) and the end-user pricing.

Coming back to the first story of this post about India, when given an option about selecting mobile data or shampoo, people will probably choose mobile data. What about mobile data vs food? While there are some innovative young companies that can help bring the costs down, there is still a big hurdle to leap in terms of convincing the operators mindsets, bureaucracy, etc.

To help explain my point lets look at an excerpt from this article in Wired:
It’s the kind of problem that Vanu Bose, the founder of the small cell network provider CoverageCo, has been trying to solve with a new, ultra-energy-efficient mobile technology. Bose chose two places to pilot this tech: Vermont and Rwanda. “We picked these two locations because we knew they would be challenging in terrain and population density,” he says. “What we didn’t expect was that many of the problems were the same in Rwanda and Vermont—and in fact the rollout has been much easier in Africa.
The good news is that things are changing. Parallel Wireless (see disclosure at the bottom) is one such company trying to simplify network deployment and at the same time bring the costs down. In a recent deployment with Ice Wireless in Canada, this was one of the benefit to the operator. To quote from MobileSyrup:
A radio access network is one of the key components in the architecture of any wireless network. RANs sit between consumer-facing devices like smartphones and computers and the core network, helping connect those devices to the larger network.  
Essentially where the likes of Nokia and Huawei ask clients to buy an expensive hardware component for their RAN needs, Parallel Wireless offers allows companies like Ice Wireless to use off-the-shelf computer and server components to emulate a RAN. The company also sells wireless base stations like the two pictured above that are smaller than the average cell tower one sees in cities and less remote parts of the country.  
Besides reducing the overall price of a network deployment, Parallel’s components present several other advantages for a company like Ice Wireless.  
For instance, small base stations make it easier for the company to build redundancies into its network, something that’s especially important when a single arctic snowstorm can knock out wireless service for thousands of people.
These kind of benefits allow operators to pass on the cost reduction thereby allowing the price reduction for end users. In case of Ice Wireless, they have already got rid of roaming charges and have started offering unlimited data plans for the communities in Canada's North.

Finally, to quote David Nabarro, Special Adviser of the United Nations Secretary-General on the 2030 Agenda for Sustainable Development from the GSMA 2016 Mobile Industry Impact Report: Sustainable Development Goals:
Achieving the SDGs demands new technologies, innovations, and data collection that can integrate and complement traditional statistics. A driving force behind this data revolution is mobile technology. 
Mobile phone technology has already transformed societies around the globe, even the poorest countries and communities. It is helping to empower women, create jobs, spur financial independence, improve education, boost agriculture production, and promote better health. Mobile phones have enabled communities to monitor elections, hold governments accountable, and save lives in natural disasters. 
As we focus on implementing the Sustainable Development Goals, the mobile industry has a critical role in working with governments and the international community to expand connectivity, to lower barriers to access, and to ensure that tools and applications are developed with vulnerable communities in mind. 

With 5G just round the corner, I hope that the operators and vendors will be able to get their costs down, resulting in lower end-user prices. That would be a win-win for everyone.

*Full Disclosure: I work for Parallel Wireless as a Senior Director, Strategic Marketing. This blog is maintained in my personal capacity and expresses my own views, not the views of my employer or anyone else. Anyone who knows me well would know this.

Friday, February 24, 2017

Connecting Rural Scotland using Airmasts and Droneways


This week EE has finally done a press release on what they term as Airmasts (see my blog post here). Back in Nov. last year, Mansoor Hanif, Director of Converged Networks and Innovation BT/EE gave an excellent presentation on connecting rural Scottish Islands using Airmasts and Droneways at the Facebook TIP Summit. Embedded below are the slides and video from that talk.





In other related news, AT&T is showing flying COWs (Cell On Wheels) that can transmit LTE signals


Their innovation blog says:

It is designed to beam LTE coverage from the sky to customers on the ground during disasters or big events.
...
Here’s how it works. The drone we tested carries a small cell and antennas. It’s connected to the ground by a thin tether. The tether between the drone and the ground provides a highly secure data connection via fiber and supplies power to the Flying COW, which allows for unlimited flight time.  The Flying COW then uses satellite to transport texts, calls, and data. The Flying COW can operate in extremely remote areas and where wired or wireless infrastructure is not immediately available. Like any drone that we deploy, pilots will monitor and operate the device during use.

Once airborne, the Flying COW provides LTE coverage from the sky to a designated area on the ground.  

Compared to a traditional COW, in certain circumstances, a Flying COW can be easier to deploy due to its small size. We expect it to provide coverage to a larger footprint because it can potentially fly at altitudes over 300 feet— about 500% higher than a traditional COW mast.  

Once operational, the Flying COW could eventually provide coverage to an area up to 40 square miles—about the size of a 100 football fields. We may also deploy multiple Flying COWs to expand the coverage footprint.

Nokia on the other hand has also been showcasing drones and LTE connectivity for public safety at D4G Award event in Dubai


Nokia's Ultra Compact Network provides a standalone LTE network to quickly re-establish connectivity to various mission-critical applications including video-equipped drones. Drones can stream video and other sensor data in real time from the disaster site to a control center, providing inputs such as exact locations where people are stranded and nature of the difficulty of reaching the locations.

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Wednesday, November 23, 2016

Facebook's Attempt to Connect the Unconnected

I am sure that by now everyone is aware of Facebook's attempt to connect the people in rural and remote areas. Back in March they published the State of Connectivity report highlighting that there are still over 4 billion people that are unconnected.


The chart above is very interesting and shows that there are still people who use 2G to access Facebook. Personally, I am not sure if these charts take Wi-Fi into account or not.

In my earlier post in the Small Cells blog, I have made a case for using Small Cells as the best solution for rural & remote coverage. There are a variety of options for power including wind turbines, solar power and even the old fashioned diesel/petrol generators. The main challenge is sometimes the backhaul. To solve this issue Facebook has been working on its drones as a means of providing the backhaul connectivity.


Recently Facebook held its first Telco Infra Project (TIP) Summit in California. The intention was to bring the diverse set of members (over 300 as I write this post) in a room, discuss ideas and ongoing projects.


There were quite a few interesting talks (videos available here). I have embedded the slides and the talk by SK Telecom below but before I that I was to highlight the important point  made by AMN.


As can be seen in the picture above, technology is just one of the challenges in providing rural and remote connectivity. There are other challenges that have to be considered too.

Embedded below is the talk provided by Dr. Alex Jinsung Choi,  CTO, SK Telecom and TIP Chairman and the slides follow that.



For more info, see:
Download the TIP slides from here.

Saturday, September 5, 2009

Farmers worldwide being helped by Mobile Phones Technology


Airtel has entered into a strategic tie-up with IFFCO (Indian Farmers Fertilisers Cooperative) for providing agriculture and allied information to farmers through mobile phones. The facility was formally launched by the Chief Operating Officer (Andhra Pradesh) of Bharti Airtel Limited, Rajnish Kaul, at a function at Anakapalle town, about 40 km from here on Tuesday.

Addressing a media conference on the occasion, he said that the unique facility would benefit over 10 lakh IFFCO society members of rural Andhra Pradesh by giving them access to vital information. The farmer members would be given five free voice messages on farming techniques, weather forecasts, dairy farming, animal husbandry, fertilizer availability and rural health initiatives.

Mr. Kaul said the farmers could also call a dedicated free helpline to get answers from a qualified veterinarian to their specific queries regarding the health of their animals. He said that SIM cards would be provided at subsidised rates and lifetime activation would be done for a mere Rs.47. Calls between the members would be charged at 50 paise a minute. The SIMs would be compatible with any mobile handsets and farmers could buy the handsets of their choice depending on their purchasing power. He said the facility was launched about six months ago in various districts of the State and there were already 65,000 connections.

Question Box provides a service in India and Uganda. In India, phone boxes are installed in slums and villages that connect users to operators that will answer questions. In Uganda, users can call in from any mobile phone and ask their questions. The operators have access to a repository of previously asked questions (and their answers), and they can also occasionally consult the Internet. A special search engine and database were also built specifically for the project.

Another initiative, Avaaj Otalo, provides an audio community forum for farmers in rural Gujarat, India. Working with an organization that produced a popular radio program, Otalo provides a call-in number where farmers can exchange questions and answers. Users are also able to listen to archives of the radio program.

These projects differ in that Question Box avoids having to process users' questions by adding a human listener in the loop; Avaaj Otalo avoids processing by organizing their collection of audio prompts with into a menu. Both programs, however, have yet to deal with the problem of cost because they subsidize the service for users. Otalo operates with a toll-free number and Question Box provides the phones to call from in India. In Uganda, Grameen Community Knowledge Workers provides the mobile phones.

It's easy to see why the fishermen of the southern Indian state of Kerala captured the attention of a Harvard economist when they began using mobile phones a few years ago to track prices in the markets where they sold their catch of the day. Observing how these devices can be used to promote economic growth, Robert Jensen wrote in a 2007 paper titled, "The Visible Hand(set): Mobile Phones and Market Performance in South Indian Fisheries -- The Micro and Mackerel Economics of Information," that "before mobile phones, deciding which [market] would offer the best price was sheer guesswork." With mobile phones, however, suddenly it became an information-based decision. What's more, noted Jensen (who is currently at Brown University in Rhode Island), "it's not a zero-sum trade-off." The fishermen's customers benefitted from lower prices and greater choice, and there was less waste since the fishermen could easily identify the villages that would have the greatest demand for their fish each day.

Now Jensen's "visible handset" is reaching further into rural India. Following a nationwide launch this summer of Nokia Life Tools (NLT), India's farmers can use their mobile phones to access tailored information to help them grow, harvest and sell their crops and manage their livestock. "There is no reason why farmers should not be as successful as fishermen," says Ravi Bapna, associate professor of information systems at the Carlson School of Management in Minnesota and executive director of the Centre for Information Technology and the Networked Economy at Hyderabad-based Indian School of Business (ISB).

Consider Ravindra Shinde, a farmer in Magardhokada, a village in the Nagpur district of Maharashtra. When he recently harvested 125 quintal (a quintal is 100 kilograms) of soybeans and was about to take the crop to market, the price was $32 a quintal. But then he received a message on his handset that soybean production in the U.S. and Argentina had fallen, so he held back and later sold his crop for $48 a quintal.

IN the early 1990s, I was engaged in an empirical research work relating to the nexus between mobile phone and poverty in rural Bangladesh. However, friends used to tease me and raise their eyebrows on hearing about the project and my interest at that time. This was to be expected in the early 1990s when, not to speak of the poor, even the "solvent" could not afford to have a mobile set. It was treated as a "luxury" item, only to be monopolised by the moneyed people.

My research findings on village pay phones of the Grameen Bank at that time -- and as published in international journals in subsequent years -- clearly showed that mobile phones could help the poor escape "rural penalty" (a la H. Hudson), defined as poverty mainly due to distance, poor connectivity and asymmetric information. However, as of today, about 40 percent of the rural households in Bangladesh are reported to have access to mobile phones and roughly one-fourth of the users are poor. Rickshaw pullers, fishermen, traders all use it to minimise information asymmetry and quicken communication between two points.

About a decade later, I was invited to comment on two research papers showing the impacts of mobile phones on farmers and traders in Africa.

The first paper was by Megumi Muto and Takashi Yamano, both representing JICA and Foundation for Advanced Studies on International Development (FASID). They drew upon panel data of rural Uganda where banana producers could reduce marketing costs and raise income with expansion of mobile phone coverage. The message is that the expansion of mobile networks increased market participation and sales of the perishable product, banana. More importantly, small producers and farmers in remote areas gained the most.

As information flow increases due to the expanded mobile phone coverage, the cost of crop marketing is expected to decrease, particularly in remote areas where potential marketing gains from the increased information flow is large. We indeed find that the network expansion has a larger impact in market participation in areas farther away from the district centers than in closer areas.

The second paper was presented by Jenny C. Aker of the University of California, Berkeley, on the impact of mobile phones on price dispersion of grains in Niger. Using a sequential searching model, the researcher observed that cell phones increased traders' reservation sales price and the number of markets over which they searched. This reduces price dispersion across markets. To be specific, grain price dispersion reduced by 6-7 percent and reduced intra-annual price variation by 10 percent.

What is important, and as revealed in both papers, is that every farmer need not possess a set. It could be the community, producers' organisations and others from where the price information could spread, either as a "public good" or as a "private good." A participant from the audience in that seminar informed us that in his village in Africa, a mobile phone is hung from the branch of a tree and interested persons could use it on payment of a fee. Second, even with access to mobile phones, full gains might not be reaped as farmers might need more information. The role of public authority and media in this respect is very important. Again, producers' organisations could form an information forum of their own to be more effective at bargaining than individual initiatives.